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Global Surface Marine Monthly Statistics - May 2025

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Statistics on global surface marine meteorological and oceanographic data are compiled monthly by personnel of NOAA's
NWS/NCEP/Central Operations. These data include those which are observed/measured by ships (including those vessels that are part of the
U.S. Voluntary Observing Ship Project), moored and drifting buoys, Coastal Marine Automated Network (CMAN) stations, and tide gauge stations
(tide gauge data are provided by NOAA's National Ocean Service/Center for Operational Oceanographic Products and Services (NOS/CO-OPS)).
Separate statistics are compiled monthly for specified vessels in the Gulf of Alaska and for specificed member vessels of the
International SeaKeepers Society. The data for which these statistics are compiled include sea-level pressure, air temperature, and wind direction
and speed (for the surface meteorological data), and sea surface temperature (for the oceanographic data).

Only 1 year's worth of statistics will be available at any given time on this web site. Please note that the monthly statistics are updated on
the first business day of each month. I.e. if the 1st falls on a weekend or on a Federal Government holiday, the statistics are updated on the first
business day which follows the weekend the or holiday.

The global monthly statistics are sent to the UKMet Office in Bracknell, England each month (the UKMet Office has been designated by the
World Meteorological Organization (WMO) as the lead center for monitoring surface marine observations), where they are consolidated with
additional statistics and forwarded to platform managers. The platform managers may then investigate platforms listed in the statistics to see if
instrumentation needs to be corrected. Please note that the statistical files available via this web site are not indentical to those passed to
Bracknell, in that the ship/platform names are included in the files on this web site (they are not included in the Bracknell files).

The monthly statistics produced for the Gulf of Alaska vessels and for the International SeaKeepers Society vessels are made available to those
program managers via this web site, so that they may evaluate the performance of select vessels in their area of interest.

All of the monthly statistics are computed using differences between the observed data and first guess fields from one of 2 NWS numerical
models. This file explains the method of comparison between the data and first guess fields, and also provides the criteria used in determining
which platforms will be listed in the NCEP Central Operations (NCO) global marine statistics each month.

Standard of Comparison

Data from each platform (ships, moored (fixed) buoys, drifting buoys, CMAN platforms, and tide gauge stations) are compared to forecasts from
one of 2 NWS numerical models for each of 4 daily synoptic periods. Each synoptic period is a 6 hour window centered on the times given in the
table below. The first guess valid times are also given below. All data observed/measured during each synoptic period are compared to the first
guess valid for that synoptic period. The first guess is interpolated to the platform's location and differences between observation and first guess
are computed. Differences between observed data and forecasts are archived four times daily.

Synoptic Period Numerical Model Used First Guess Valid Time
0000 UTC 6-hour forecast from the 1800 UTC run of NWS's Global Data Assimilation System (GDAS) 0000 UTC
0600 UTC 6-hour forecast from the 0000 UTC run of GDAS 0600 UTC
1200 UTC 6-hour forecast from the 0600 UTC run of GDAS 1200 UTC
1800 UTC 6-hour forecast from the 1200 UTC run of GDAS 1800 UTC


If the GDAS is unavailable for a particular synoptic period, a 6-hour forecast from the previous run of NWS's Global Forecast System (GFS) is
used instead.

Each synoptic period includes data with observation times +/- 3 hours as follows:

Synoptic Period Observation Times of Data
0000 UTC 2100 UTC (previous day) through 0259 UTC
0600 UTC 0300 UTC through 0859 UTC
1200 UTC 0900 UTC through 1459 UTC
1800 UTC 1500 UTC through 2059 UTC


No time interpolation between observed data and first guess is done (i.e. an observation from 1000 UTC or 1400 UTC will be compared to a first
guess valid at 1200 UTC).

Criteria for specific parameters

  • Global monthly statistics:

    For each of the 5 parameters (sea-level pressure, air temperature, wind speed, wind direction, and sea surface temperature) included
    in the monthly statistics, the following criteria must be met in order for a particular platform to be listed in the NCO global monthly
    statistics

    Sea-level pressure (slp):

    • 20 or more slp observations for the month, and 1 or more of the following:
      • absolute value of bias (mean difference between observation and forecast) is at least 4.0 mb
      • standard deviation of difference is at least 6.0 mb
      • percentage of reports that were gross errors is at least 25% of the total number of reports received for this parameter (see Definition of gross errors, below).

    Air temperature:

    • 20 or more air temperature observations for the month, and 1 or more of the following:
      • absolute value of bias is at least 4.0 deg C
      • standard deviation of difference is at least 6.0 deg C
      • percentage of reports that were gross errors is at least 25% of the total number of reports received for this parameter.

    Wind direction:

    • 20 or more wind direction observations for the month, and 1 or more of the following:
      • absolute value of bias is at least 30.0 degrees
      • standard deviation of difference is at least 80.0 degrees
      • percentage of reports that were gross errors is at least 25% of the total number of reports received for this parameter.

    Wind speed:

    • 20 or more wind speed observations for the month, and 1 or more of the following:
      • absolute value of bias is at least 5.0 m/s
      • percentage of reports that were gross errors is at least 25% of the total number of reports received for this parameter.

    Sea surface temperature (sst):

    • 20 or more sst observations for the month, and 1 or more of the following:
      • absolute value of bias is at least 4.0 deg C
      • standard deviation of difference is at least 6.0 deg C
      • percentage of reports that were gross errors is at least 25% of the total number of reports received for this parameter.

  • Gulf of Alaska monthly statistics and International SeaKeepers Society monthly statistics:

    Specific callsigns were given to NCO to indicate those vessels which are to be included in these monthly statistics. No other criteria must
    be met, except that the vessels must have at least one observation during the desired month. If a vessel reports only once during a
    specific month, then the bias for any reported parameter is not a mean bias but is merely the difference between observed and first guess
    values for that parameter. Standard deviation is only computed when a vessel has 2 or more reports for any particular parameter in the
    month. As with the global monthly statistics, gross errors are not included in computations of bias or standard deviation (see Definition
    of gross errors
    below).

With the exception of wind direction, the bias for each parameter is always computed as (observed data - first guess). A mean difference bias for
slp of -4.8 mb would mean that the observed slp for that platform is, on average, 4.8 mb lower than the first guess slp. Also, a low standard
deviation (SD) of the difference would mean that the platform's bias is consistent (the closer to 0 the SD is, the more consistent that platform is
for that parameter). For example, if the slp bias was -4.8 mb and standard deviation of the difference was 1.0, that would imply that the platform
consistently was around 4.8 mb too low with its slp. If the SD is high, then the platform has a lot of variability for the parameter in question, with
with regards to its comparison with the first guess.

Calculation of bias and standard deviation for wind direction

For platforms reporting wind direction that is consistently close to 180 degrees off the first guess wind direction, using the regular algorithm of
(observed wind direction - first guess wind direction) would result in a very large SD and bias, which would make it difficult to detect the wind
direction error. The ideal for this situation would be to have a small SD with a bias on the order of 180 degrees. This is possible with the use of
the algorithm used by Meteo-France's Centre for Marine Meteorology (Centre de Meteorologie Marine (CMM)) in computation of wind direction
statistics for moored and drifting buoys. This algorithm computes bias and SD for the following series:

  • (Obs - FG)
  • (Obs + 90) - FG
  • (Obs - 90) - FG
  • (Obs + 180) - FG

where Obs = observed wind direction and FG = first guess wind direction.

The bias and SD are computed for each of the above 4 series. The smallest of the 4 SD values is selected and then (bias - i) (where i is 0, 90, -90,
and 180, respectively) is selected as the actual bias if the series ((Obs + i) - FG) was the series associated with the smallest SD. See the following
table for more details.

If smallest SD is computed for Bias used is
(Obs - FG) bias = ((bias of (obs - FG)) - 0)
((Obs + 90) - FG) bias = ((bias of ((obs + 90) - FG)) - 90)
((Obs - 90) - FG) bias = ((bias of ((obs - 90) - FG)) - (-90))
((Obs + 180) - FG) bias = ((bias of ((obs + 180) - FG)) - 180)


Using this algorithm for all wind direction bias and SD computations will ensure that the most accurate representation of the difference between
observed wind direction and first guess wind direction will be used and displayed in the monthly statistics.

Sample lines from global monthly statistics (and explanation)


          NCEP CENTRAL OPERATIONS (NCO) PLATFORM STATS
                         AUGUST 2024
                SEA-LEVEL PRESSURE FOR ALL HOURS

PLATFORM   SHIP/PLAT. NAME           TYPE   NO. REPORTS    MEAN DIFF    SD DIFF    # GROSS ERR

3FFA5      MSC DIVINA                SHP         50           11.9        2.1           3


The above lines were taken from the global monthly statistics produced for August 2024. The platform shown has the callsign 3FFA5. Its name
is MSC Divina. The letters SHP in the TYPE column indicate that the platform is a ship (see Platform types seen in monthly statistics below).
The number of reports used in calculation of the sea-level pressure statistics for ship 3FFA5 is 50. The mean difference is 11.9 mb and the
standard deviation of the difference is 2.1 mb. The number of gross errors for sea-level pressure from ship 3FFA5 is 3 (see Definition of gross
errors
below). Please note that the total number of sea-level pressure reports received from ship 3FFA5 for the month of August is 53
(the sum of the numbers listed under NO. REPORTS and # GROSS ERR as seen above).

Caveat

Please note that a platform's appearance in the monthly statistics does not necessarily mean that the platform's data are bad. A high bias can be
indicative of a persistent problem with the first guess at the platform's lcoation. While the model's grid resolution and topogoraphical resolution are
1 degree x 1 degree, this is still not fine enough to depict small-scale local meteorological and oceanographic effects. In addition, the first guess, in
general, performs more poorly in the Southern Hemisphere than in the Northern Hemisphere, due to lower data counts (much less land south of
the Equator, so not nearly as many land-based surface and upper air observations, plus major shipping lanes are primarily in the Northern
Hemisphere).

Definition of gross errors

An observation is considered to be a gross error if it differs from the first guess by the following values:

slp abs(obs - fcst) ≥ 15.0 mb
air temperature abs(obs - fcst) ≥ 15.0 deg C
wind direction abs(obs - fcst) ≥ 100 degrees
wind speed abs(obs - fcst) ≥ 15.0 m/s
sst abs(obs - fcst) ≥ 15.0 deg C



abs: absolute value
obs: observation
fcst: forecast (first guess)



By convention, gross errors are not used in the computation of the mean difference or standard deviation.

Platform types seen in monthly statistics

Abbreviation Type
SHP ship
DB drifting buoy
FB fixed (moored) buoy
CMN CMAN platform
TG tide gauge station



Statistics are not computed for platforms with the following callsigns: 'SHIP', 'BUOY', 'BBXX', 'PLAT', 'RIGG', or 'METEO'. These callsigns are not
unique (i.e. more than one platform may have the same callsign), so statistics for these callsigns would be meaningless.

Ship and Platform Names

The ship and platform names are obtained from several sources. Since callsigns and ship names change from time to time, a particular callsign
may be associated with 2 or more different names, or a ship name may be associated with several callsigns. Although we will update the names
file several times a year, we may not know which callsign/name is current.

A good web site for querying ship names and/or callsigns is that of the Ship-Of-Opportunity Programme (SOOP), which is a joint program of the
WMO and the Intergovernmental Oceanographic Commission (IOC). On the OceanOps dashboard, click "Enter Dashboard". In the upper left
"Search" bar, one may enter a full or partial ship name or callsign, and an attempt will be made to find a match on either.

Additional Marine Data/Information

If you are seeking climatological marine data such as average temperature, wave heights, or prevailing winds for a particular oceanographic
region, please contact NOAA's National Centers for Environmental Information (NCEI). For marine forecasts, please contact NOAA/NWS/NCEP's
Ocean Prediction Center (OPC).

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          NCEP CENTRAL OPERATIONS (NCO) PLATFORM STATS                                        
                         MAY       2025                                                       
                SEA-LEVEL PRESSURE FOR ALL HOURS                                              
                                                                                              
PLATFORM   SHIP/PLAT. NAME           TYPE   NO. REPORTS    MEAN DIFF    SD DIFF    # GROSS ERR
                                                                                              
3E2429     EVER ACT                  SHP         35           -4.6        3.1           0     
3E3566     UNKNOWN                   SHP         63            5.5        2.0           0     
3E5049     CRISTOBAL                 SHP         26           10.5        2.1           0     
3EBY2      UNKNOWN                   SHP         18           12.7        2.0          30     
3EFK6      MSC MUSICA                SHP         37           -4.4        3.9           0     
3FIL       MAERSK ENSHI              SHP         54            4.4        2.2           0     
3FON6      UNKNOWN                   SHP         25            4.2        0.8           0     
3FWH8      EVER LOTUS                SHP         57            5.6        4.3           0     
3FZI8      MSC SPLENDIDA             SHP         56            4.5        1.9           0     
7KKU       UNKNOWN                   SHP         53           -4.3        1.1           0     
9609639    UNKNOWN                   SHP         20            7.2        5.3           1     
9HA3062    MEIN SCHIFF 3             SHP         20           -4.2        2.8           0     
9HA4330    MEIN SCHIFF 6             SHP         61           -4.8        1.4           0     
9HA4638    MSC SEASIDE               SHP         33           10.2        3.4           7     
9HA4767    CMA CGM JEAN GABRIEL      SHP         29            5.0        1.2           0     
9HA4902    MSC BELLISSIMA            SHP         86            7.6        4.6          10     
9HA5209    MSC VIRTUOSA              SHP        213            9.8        2.3           9     
9HA5370    MSC SEASHORE              SHP         40            6.7        3.0           0     
9HA5682    MSC WORLD EUROPA          SHP        656           -4.7        2.7           0     
9HA5823    EXPLORA 1                 SHP        187            8.5        1.5           0     
9HA5976    EXPLORA II                SHP         80            6.8        2.5           0     
9HJB9      CELEBRITY CONSTELLATION   SHP         51            4.1        1.1           1     
9HSJ7      DISHA                     SHP         78            7.4        1.7           1     
9V5243     MAERSK SEVILLE            SHP         39            7.1        2.7           1     
9V5247     MAERSK SOPHIA             SHP         62            4.0        1.3           0     
9V6256     EVER SUPERB               SHP         50           -4.1        0.6           0     
9V7629     EVER MAST                 SHP         68            7.1        1.6           0     
9V7648     EVER MODE                 SHP         22            4.2        0.9           0     
9V7659     EVER MACRO                SHP         87            5.7        1.9           0     
9V9148     UNKNOWN                   SHP         34            5.2        1.9           0     
9V9408     MAERSK CAMEROUN           SHP         22            7.5        0.8           0     
9VFV4      MAERSK TAURUS             SHP         42            7.1        3.0           0     
ALGOM12    ALGOMA EQUINOX            SHP         25           -1.1        5.4          11     
ATAT2      APJ JAOUAD                SHP          0            0.0        0.0          53     
AUBT       JAG PANKHI                SHP          0            0.0        0.0          40     
AUTP       DESH VISHAL               SHP         22            6.2        3.1           6     
AVBC       DESH GARIMA               SHP         17            4.1        1.4          12     
AVWF       DESH SHOBHA               SHP         49            6.6        5.2           5     
BKIE       EVER LIVEN                SHP         30            8.1        1.4           0     
C6ED5      CARIBBEAN VOYAGER         SHP         50            5.1        2.3           1     
C6FB3      NORWEGIAN PRIMA           SHP         39           -6.7        1.4           0     
D5AD8      TIRUA                     SHP         66           11.8        2.5          19     
DUUFU3N    UNKNOWN                   SHP        125           -4.7        1.5           0     
JMVS       UNKNOWN                   SHP         33            4.0        2.8           0     
JPTX       UNKNOWN                   SHP         34            6.3        1.0           0     
KUL7SEK    UNKNOWN                   SHP         61            4.5        1.0           0     
LAQL7      STAR LOFOTEN              SHP         34            6.6        0.8           1     
LAVN4      STAR HIDRA                SHP         59            4.7        2.3           0     
OBAA       BAP UNION                 SHP         33           -6.6        1.7           0     
ONLW       MINERAL ITALIA            SHP         63            6.9        1.9           0     
OXSQ2      MAERSK ESSEX              SHP         63           10.0        2.6           1     
OZIB2      MAERSK LONDRINA           SHP         20            5.3        0.5           0     
S6AN5      MAERSK COLOMBO            SHP         55            5.4        1.9           0     
UAEV       UNKNOWN                   SHP         28            1.0        6.5           2     
V7A6073    STI MIRACLE               SHP        653            4.9        1.8           1     
V7A6081    STI MYSTERY               SHP        196            4.8        1.4           0     
V7DI9      STI SLOANE                SHP         25            5.3        2.0           0     
V7QT7      UNKNOWN                   SHP         65            4.7        1.5           0     
V7WS6      FEDERAL SWIFT             SHP         18            5.1        1.3           2     
VRLA6      MINERAL CLOUDBREAK        SHP         73            9.9        1.1           0     
VRLJ2      UNKNOWN                   SHP         20           -5.2        3.5           0     
VROB9      SEASPAN BEACON            SHP         25            6.3        1.4           0     
VROC3      YM WISH                   SHP        399            6.0        1.6           1     
VROO6      YM WORTH                  SHP         41            4.2        3.5           0     
VRQS3      UNKNOWN                   SHP         39            7.7        2.2           0     
VRQS4      OLYMPIA LOGGER            SHP         23            4.5        1.2           0     
VRSJ8      UNKNOWN                   SHP         22           -8.1        0.9           0     
VRUN6      ONE PARANA                SHP         46           10.4        2.9           1     
VRVO5      GUNHILDE MAERSK           SHP         49            4.9        2.8           0     
WCAJ       POLAR ENDEAVOUR           SHP         26           -4.0        4.5           1     
WDC8307    SAMUEL DE CHAMPLAIN       SHP         42            0.3        6.2           3     
WXN3191    INDIANA HARBOR            SHP         17            0.4        2.4           6     
ZBZA5GS    UNKNOWN                   SHP         28           -5.5        0.7           0     
ZGFY4      CAJUN SUN                 SHP         60           -8.9        1.1           0     
45014                                FB           0            0.0        0.0        1488     
45161                                FB         652            9.3        0.7           0     
                                                                                              
                                                                                              
                         MAY       2025                                                       
                 AIR TEMPERATURE FOR ALL HOURS                                                
                                                                                              
PLATFORM   SHIP/PLAT. NAME           TYPE   NO. REPORTS    MEAN DIFF    SD DIFF    # GROSS ERR
                                                                                              
3E3535     ELEGANT ACE               SHP         20            4.7        2.5           0     
3FAR9      UNKNOWN                   SHP         25            5.3        2.3           0     
3FON6      UNKNOWN                   SHP         25            5.3        1.9           0     
9HA5021    CMA CGM WHITE SHARK       SHP        109            4.5        3.9           2     
9HYO7      RAAHI                     SHP         25            4.5        3.3           0     
9V6972     HYPERION                  SHP         21            4.6        2.6           0     
ALBARO     ALBARO                    SHP         20            5.3        1.4           0     
AUBT       JAG PANKHI                SHP         40            4.0        3.0           0     
BKIE       EVER LIVEN                SHP         30            4.9        2.6           0     
OUQK2      CLEMENTINE MAERSK         SHP         23            7.5        2.5           0     
V7WS6      FEDERAL SWIFT             SHP         20            4.5        2.8           0     
VRBQ6      UNKNOWN                   SHP         60            4.1        2.7           0     
VRFU8      UNKNOWN                   SHP         37            4.4        2.7           0     
VRJS2      UNKNOWN                   SHP         21            4.3        2.0           0     
VRLQ3      UNKNOWN                   SHP         20            4.9        2.1           0     
VRPN7      KANDA LOGGER              SHP         21            4.6        2.8           0     
VRZK8      UNKNOWN                   SHP         20            5.6        2.6           0     
WTEG       NOAA REUBEN LASKER        SHP       1137            9.5        2.9         117     
YDDP2      UNKNOWN                   SHP         27            4.3        2.1           0     
KYWF1      UNKNOWN                   TG          24            4.7        1.2           0     
PRDA2      UNKNOWN                   TG        1471            4.1        4.4          12     
WYCM6      UNKNOWN                   TG         607            4.6        1.6           0     
44078                                FB           0            0.0        0.0         984     
45006                                FB        2638           -4.2        3.0           0     
45027                                FB        2349           -4.6        3.9          30     
45028                                FB         779           -5.2        3.9          30     
45136                                FB         127           -7.0        2.5           0     
45199                                FB        1488           -4.3        2.4           0     
46206                                FB         460           12.6        2.0         232     
                                                                                              
                                                                                              
                         MAY       2025                                                       
                  WIND DIRECTION FOR ALL HOURS                                                
                                                                                              
PLATFORM   SHIP/PLAT. NAME           TYPE   NO. REPORTS    MEAN DIFF    SD DIFF    # GROSS ERR
                                                                                              
3E4612     UNKNOWN                   SHP         35           87.2        0.1           0     
3E5049     CRISTOBAL                 SHP         22           47.1       31.4           4     
3EBY2      UNKNOWN                   SHP         45          157.8       22.3           3     
3EFK6      MSC MUSICA                SHP         28         -148.2       27.9           5     
3EJF3      MSC ORCHESTRA             SHP         22          -94.0        4.2           0     
3FLT5      UNKNOWN                   SHP         19           -3.9       35.1           9     
3FZI8      MSC SPLENDIDA             SHP         23         -123.4       52.3          33     
3FZO8      CARNIVAL BREEZE           SHP         23         -103.7       13.6           1     
3HPZXMS    UNKNOWN                   SHP         61           96.8       11.9           1     
3URK8QU    UNKNOWN                   SHP         72          -51.7       46.9          17     
3WUT68S    UNKNOWN                   SHP         35           96.8       13.7           1     
3XCGEYH    UNKNOWN                   SHP         57         -164.4       16.9           3     
5EXMSZP    UNKNOWN                   SHP         43           96.8        7.7           1     
7JYN       UNKNOWN                   SHP         29           37.2       40.2           3     
7KBD       UNKNOWN                   SHP         84           91.9        5.8           0     
7KGP       UNKNOWN                   SHP         26          129.2       18.8           2     
7KIY       UNKNOWN                   SHP         28         -161.3        3.7           2     
7KPB       UNKNOWN                   SHP         53         -117.8       16.6           5     
7KPW       UNKNOWN                   SHP         44            7.7       39.3          20     
7MNHGYB    UNKNOWN                   SHP         23           42.1       37.0           4     
7WFBSAS    UNKNOWN                   SHP         20         -147.7       39.9           3     
8JC9EXU    UNKNOWN                   SHP         35           35.9       32.4           3     
9609639    UNKNOWN                   SHP         20           97.4       13.5           1     
9HA2006    ASEEM                     SHP         32            1.9       40.2          11     
9HA3858    MEIN SCHIFF 5             SHP         27           33.1       37.5           6     
9HA4876    COTINGA                   SHP         21         -124.8        7.6           2     
9HA5370    MSC SEASHORE              SHP         39         -111.8       16.8           1     
9HA5823    EXPLORA 1                 SHP        138           -0.3       47.1          49     
9HJB9      CELEBRITY CONSTELLATION   SHP         44          -55.3       38.6           8     
9HYO7      RAAHI                     SHP         18          -19.6       42.8           7     
9SCUKEL    UNKNOWN                   SHP         24           30.9       32.3           3     
9V2024     CRYSTAL SUNRISE           SHP         57          155.9       18.9           2     
9V2734     SHAAMIT                   SHP        113         -102.2        6.7           2     
9V2792     EVER SAFETY               SHP         33           34.5       21.6           2     
9V6171     MAERSK MEMPHIS            SHP         31          -34.1       34.1           5     
9V6458     MAERSK YUKON              SHP         18          149.0        9.4           3     
9V6970     HARZAND                   SHP         30          161.8       16.4           3     
9V9288     EVER LAWFUL               SHP         36           35.4       33.9           7     
A8OR8      YM UNIFORM                SHP         21           32.1       26.1           1     
A8SI6      ANTWERP                   SHP         20          -43.1       33.9           3     
ALGOM01    ALGOMA GUARDIAN           SHP         18           38.5       32.2           2     
AMOHK02    UNKNOWN                   SHP         90         -166.8       44.8         155     
ATAT2      APJ JAOUAD                SHP         20         -126.8       33.1          33     
AUBT       JAG PANKHI                SHP         20          103.0       48.3          20     
AUTP       DESH VISHAL               SHP         18          148.3       49.8           6     
AUTV       DESH VIRAAT               SHP         25           76.1       49.3           8     
C6DL4      NORWEGIAN BLISS           SHP        168          -35.3       41.2          21     
C6EF4      NORWEGIAN ENCORE          SHP        103           -5.9       50.1          59     
C6EI4      ARTEMIS VOYAGER           SHP         22          126.6       30.9           6     
C6EO4      CARINA VOYAGER            SHP         27          -35.3       32.5           7     
C6TX6      NORWEGIAN JEWEL           SHP         76           83.9        1.5           0     
CFJ8305    ALGOMA STRONGFIELD (AWS)  SHP       1972          -52.6       45.2         357     
CFN6357    BAIE COMEAU               SHP         19          -40.7       42.0           4     
CTT33GW    UNKNOWN                   SHP         33          -97.9       10.9           2     
D7EV       UNKNOWN                   SHP          5         -138.3        6.5          19     
DBHNUYD    UNKNOWN                   SHP        114         -165.2       25.0           8     
DLXT34Y    UNKNOWN                   SHP         47           30.6       28.5           6     
DYBJBBS    UNKNOWN                   SHP         69           31.2       36.4           6     
ERDNLZH    UNKNOWN                   SHP         42           -3.0       31.7          15     
FBLSEKE    UNKNOWN                   SHP         44          176.8       22.4           3     
FYTT4LF    UNKNOWN                   SHP         57          -35.6       39.5           5     
H3FV       MSC OPERA                 SHP        414           11.9       51.5         150     
H8EW       MSC ARMONIA               SHP         80          -34.4       36.5          17     
HOPW       MSC LIRICA                SHP        189            1.5       50.3          84     
JMVS       UNKNOWN                   SHP         31          103.1        2.4           2     
KAO107     R/V KIYI                  SHP         36          -32.8       32.6           3     
KAOU       ROGER REVELLE (AWS)       SHP        397           87.2       49.4         305     
KBAG       BADGER                    SHP         23           31.3       34.2           3     
KGWS       GREEN WAVE                SHP         38         -145.1        3.0           3     
KNBQKAQ    UNKNOWN                   SHP         24          -32.5       25.6           2     
KVMU       TS KENNEDY                SHP         25            1.6       42.7           9     
KWRFXTU    UNKNOWN                   SHP         34          163.4       19.7           2     
LANT5      STAR ISMENE               SHP         38          122.9        7.4           3     
LAVN4      STAR HIDRA                SHP         55           42.5       25.9           4     
LBYJ7GD    UNKNOWN                   SHP         19          135.8       37.6           2     
LJBL58D    UNKNOWN                   SHP        495          -64.2       49.1         166     
MMZT85X    UNKNOWN                   SHP         39           -9.1       40.4          16     
MWAQ       UNKNOWN                   SHP         27          -10.3       41.7          10     
N261       UNKNOWN                   SHP        610           54.6       46.8         134     
NAXMCDF    UNKNOWN                   SHP         25            1.5       29.1          11     
NEPP       USCGC HEALY               SHP         15          173.2       32.8           8     
ONLW       MINERAL ITALIA            SHP         60           32.9       34.7           3     
OXSQ2      MAERSK ESSEX              SHP         60           31.0       31.7           4     
PWMWGPP    UNKNOWN                   SHP         54         -141.9        0.2           2     
QJLVJFW    UNKNOWN                   SHP         25           14.3       40.3          19     
RULLM7N    UNKNOWN                   SHP         37          -39.4       33.2           5     
RYPU8UL    UNKNOWN                   SHP         82           36.5       21.8           1     
S6AN5      MAERSK COLOMBO            SHP         30          -21.7       28.8          25     
TEPWR4U    UNKNOWN                   SHP          8          -28.3       40.3          25     
UBRI5      UNKNOWN                   SHP         17          -45.3       41.2           3     
UCFT       UNKNOWN                   SHP         20          149.8        4.4           2     
UCLD       UNKNOWN                   SHP         30         -136.3       21.9           3     
V7DI9      STI SLOANE                SHP         25           92.1        4.0           0     
V7HH2      STI GALLANTRY             SHP         20           77.9       54.2          10     
V7TM6      UNKNOWN                   SHP         23           31.4       27.8           4     
V7TO3      UNKNOWN                   SHP         29          -42.5       16.9           0     
V7WS4      FEDERAL SABLE             SHP         30           97.7       16.3           1     
VDBY       ALGOMA COMPASS (AWS)      SHP        786          -33.2       37.7          56     
VRBL4      SAGA ADVENTURE            SHP         23         -140.6       46.2           6     
VRCB4      UNKNOWN                   SHP         23            3.4       33.1           9     
VRCU7      UNKNOWN                   SHP         27          100.8       12.2           1     
VRDW2      UNKNOWN                   SHP         73          -49.0       40.9          12     
VREM6      UNKNOWN                   SHP         61          -55.8       47.7          15     
VRFJ6      UNKNOWN                   SHP         36         -145.0        2.9           2     
VRLK2      JIANGMEN TRADER           SHP         18          131.7       19.7           3     
VRMX7      UNKNOWN                   SHP         40          115.8        1.0           2     
VROH8      YM WELLHEAD               SHP         20          118.5       28.7           2     
VRQS4      OLYMPIA LOGGER            SHP         10          110.7       37.8          13     
VRQZ7      ORIENTAL KING             SHP         30          -31.6       26.9           0     
VRRP7      CMA CGM MUNDRA            SHP         18          113.0       14.1           2     
VRTF2      UNKNOWN                   SHP         13           96.1       39.1          18     
VRVC6      UNKNOWN                   SHP         41         -139.1        3.3           2     
VRVE5      ONE FUTURE                SHP         19          140.3       11.1           2     
VRWK9      UNKNOWN                   SHP         31          133.7       17.6           4     
VRWN4      UNKNOWN                   SHP         45           35.0       29.6           4     
VRWR7      SAGA CREST                SHP         17         -146.3       50.6          13     
VRZK8      UNKNOWN                   SHP         19           92.7        8.1           1     
WDB9821    JOYCE L. VANENKEVORT      SHP         32          -45.4       44.5           6     
WDC6027    BURNS HARBOR              SHP         50          -32.2       35.1           8     
WDC6055    STEWART J. CORT           SHP         38           41.6       34.2           7     
WDC8307    SAMUEL DE CHAMPLAIN       SHP         33          -12.0       44.1          11     
WDD2992    DAVID B                   SHP        636           -8.0       46.9         232     
WDE6486    MEDEIA                    SHP        632          -46.0       44.1         121     
WDF7019    OLIVE L. MOORE            SHP         23          -31.0       21.8           2     
WDH7557    JOHN G. MUNSON            SHP         44           35.4       38.3           6     
WDH7560    PRESQUE ISLE              SHP        166          -35.4       36.6          22     
WDK8035    STEADFAST                 SHP        468          -41.3       38.1          60     
WHQBY4B    UNKNOWN                   SHP         98           87.0        6.0           0     
WLZ9WHS    UNKNOWN                   SHP         14          -30.1       43.5          14     
WTEA       NOAA THOMAS JEFFERSON     SHP        827          -35.0       31.7          75     
WXN3191    INDIANA HARBOR            SHP         14           -1.9       36.6          10     
WXU3434    WALTER J. MCCARTHY JR.    SHP         20           -2.5       42.7           8     
WYM9567    AURORA                    SHP       1223          -11.4       49.7         557     
WYR4481    PAUL R. TREGURTHA         SHP         24            3.2       39.6          10     
WZD2465    H. LEE WHITE              SHP        110          -50.2       41.4          18     
XJBK       ALGOMA HARVESTER (AWS)    SHP       2105          -45.4       42.5         341     
XYKWGQR    UNKNOWN                   SHP         17          -76.6       51.6           4     
YCAAYCC    UNKNOWN                   SHP         15          136.7       36.7          12     
YDDP2      UNKNOWN                   SHP         23           35.7       31.5           4     
YRZSQRB    UNKNOWN                   SHP         37          -44.6       38.6           4     
ZCPC7MW    UNKNOWN                   SHP         40         -100.5       13.1           2     
ZGFL8      UNKNOWN                   SHP         38          127.4        7.2           2     
ACXS1      UNKNOWN                   CMN       2187          -13.5       41.2         769     
AJXA2      UNKNOWN                   CMN       3745          -47.6       43.4         674     
ANMN6      UNKNOWN                   CMN       1743           -9.2       51.6        1182     
ARPF1      UNKNOWN                   CMN       6276           51.6       44.4        1160     
BABT2      UNKNOWN                   CMN       6952          -32.1       23.5         320     
BIGM4      UNKNOWN                   CMN       2843           -6.1       46.5        1621     
BLIA2      UNKNOWN                   CMN       1076           70.4       50.1         406     
CPXC1      UNKNOWN                   CMN       5329            6.2       49.5        3111     
CSPA2      UNKNOWN                   CMN        628          -43.5       37.0          60     
FFIA2      UNKNOWN                   CMN        649           39.7       39.8          92     
FPTM4      UNKNOWN                   CMN        270           20.7       39.8         100     
GTLM4      UNKNOWN                   CMN       4012          -33.8       38.4         428     
GUXA2      UNKNOWN                   CMN       3107          -11.7       48.5        1340     
HAXA2      UNKNOWN                   CMN       3015          -33.4       45.9        1422     
HMRA2      UNKNOWN                   CMN       1776           83.6       49.7        1177     
HMSA2      UNKNOWN                   CMN       2976           69.7       49.4        1464     
ILOH1      UNKNOWN                   CMN       3898          105.6       52.0        3375     
JCRN4      UNKNOWN                   CMN       2618          -50.0       27.8         358     
JLXA2      UNKNOWN                   CMN       3659          -55.1       45.0         763     
LIXA2      UNKNOWN                   CMN       3199           -3.8       48.6        1222     
MLWW3      UNKNOWN                   CMN       4081          -32.0       37.9         369     
MRKA2      UNKNOWN                   CMN        946            0.0       51.3         540     
MRNA2      UNKNOWN                   CMN       3172          -21.4       48.2        1214     
MRYA2      UNKNOWN                   CMN       3834           52.3       41.5         592     
MXXA2      UNKNOWN                   CMN       3734          -57.8       40.8         713     
NAXR1      UNKNOWN                   CMN       2436           59.4       32.3         533     
NPDW3      UNKNOWN                   CMN       1008         -135.0       43.9         447     
PBFW1      UNKNOWN                   CMN       1878           18.2       45.0         986     
PBPA2      UNKNOWN                   CMN        402         -156.8       45.4         289     
PCNT2      UNKNOWN                   CMN       6535          -36.4       32.0         737     
PGXA2      UNKNOWN                   CMN       3690           40.8       46.3         742     
PNGW3      UNKNOWN                   CMN       3480          -62.0       43.1         979     
POTA2      UNKNOWN                   CMN        859          -84.1       54.5         626     
PRTA2      UNKNOWN                   CMN        471           -1.1       46.4         222     
PTLA2      UNKNOWN                   CMN       3130          -15.7       50.7        1296     
RIXA2      UNKNOWN                   CMN       3753           48.0       43.7         644     
RTAT2      UNKNOWN                   CMN       6955          -31.4       23.5         318     
SCXA2      UNKNOWN                   CMN       3740          -50.8       43.4         675     
SDIA2      UNKNOWN                   CMN       1371            0.2       46.3         530     
SFXC1      UNKNOWN                   CMN        384           37.9       26.2          24     
SHXA2      UNKNOWN                   CMN       3325           68.6       43.8        1090     
SISW1      UNKNOWN                   CMN       2469          154.4       48.4        1991     
SLVM5      UNKNOWN                   CMN       3022          -86.4       31.4        1599     
STXA2      UNKNOWN                   CMN       3133          -77.6       52.3        1313     
SVNM4      UNKNOWN                   CMN       2957          -52.0       40.2         756     
TCMW1      UNKNOWN                   CMN       5056           11.3       50.4        2215     
THLO1      UNKNOWN                   CMN        689          -30.5       30.1          44     
TIBC1      UNKNOWN                   CMN       1971          -75.7       48.6        1005     
TKEA2      UNKNOWN                   CMN       3276           -0.2       42.4        1166     
WHRI2      UNKNOWN                   CMN       1160          -39.1       36.7         297     
WKXA1      UNKNOWN                   CMN       1824            0.2       35.7        1096     
WNEM4      UNKNOWN                   CMN       6209           37.6       43.4        1060     
WPOW1      UNKNOWN                   CMN        472           62.8       53.9         268     
YRSV2      UNKNOWN                   CMN       1955          -11.7       48.7         949     
ANPT2      UNKNOWN                   TG        1414          -41.1       22.6          74     
ANTA2      UNKNOWN                   TG         824           87.0       52.5         643     
ANVC1      UNKNOWN                   TG        1375          -40.8       30.2         113     
APAM2      UNKNOWN                   TG          20          -53.5       20.7           3     
ATKA2      UNKNOWN                   TG        1337           38.7       38.6         149     
BABT2      UNKNOWN                   TG        1424          -33.0       23.8          57     
BFTN7      UNKNOWN                   TG          24          -41.4       21.8           0     
BKBF1      UNKNOWN                   TG          22           43.4       33.2           2     
BMTW1      UNKNOWN                   TG         524         -118.0       52.5         934     
CECC1      UNKNOWN                   TG        1041           68.6       48.3         447     
CHAO3      UNKNOWN                   TG        1113           -4.2       46.2         375     
CHBV2      UNKNOWN                   TG          22         -131.2       12.0           2     
CPMW1      UNKNOWN                   TG        1332           40.6       41.0         156     
CPNW1      UNKNOWN                   TG        1334          -32.9       38.9         129     
CPTR1      UNKNOWN                   TG          23          -47.5       18.5           1     
CRVA2      UNKNOWN                   TG         764         -157.9       52.2         724     
DULM5      UNKNOWN                   TG        1120          -31.6       41.1         364     
FOXR1      UNKNOWN                   TG          23          -50.7       20.7           1     
FPKG1      UNKNOWN                   TG          18           61.3       47.5           6     
FRDF1      UNKNOWN                   TG          17           58.0       52.1           7     
FTPC1      UNKNOWN                   TG        1424          -38.8       27.9          64     
ICAC1      UNKNOWN                   TG        1184           59.3       45.3         304     
ILOH1      UNKNOWN                   TG         798          106.5       52.1         690     
JMPN7      UNKNOWN                   TG          22          -95.5        9.1           2     
KPTN6      UNKNOWN                   TG          22          -58.5       18.9           1     
LAPW1      UNKNOWN                   TG        1078           -9.4       42.6         376     
LWSD1      UNKNOWN                   TG          21          -60.1       20.9           1     
MCGM4      UNKNOWN                   TG        1045            0.1       45.4         442     
MGPT2      UNKNOWN                   TG        1342          -36.5       32.3         131     
MGZP4      UNKNOWN                   TG        1046          -29.9       43.2         442     
MROS1      UNKNOWN                   TG          22          -40.1       36.5           2     
MYPF1      UNKNOWN                   TG          22           62.4       35.1           2     
NCHT2      UNKNOWN                   TG        1305           47.8       35.4         175     
NKTA2      UNKNOWN                   TG         385           -6.7       44.3         147     
NMTA2      UNKNOWN                   TG        1018           11.7       50.0         469     
NTBC1      UNKNOWN                   TG         883          -25.4       50.4         605     
NWHC3      UNKNOWN                   TG          24           31.1       19.6           0     
PCNT2      UNKNOWN                   TG        1310          -36.8       32.2         136     
PDVR1      UNKNOWN                   TG          22          -90.7        5.9           1     
PLXA2      UNKNOWN                   TG         831         -142.1       43.7         657     
PORO3      UNKNOWN                   TG         868          -85.5       54.6         620     
PRHH1      UNKNOWN                   TG        1329          -48.8       19.1         159     
PSBC1      UNKNOWN                   TG        1436           96.8       18.5          52     
PSLC1      UNKNOWN                   TG        1062           78.7       54.0         426     
PTIM4      UNKNOWN                   TG        1075          -14.0       42.8         413     
PTWW1      UNKNOWN                   TG        1036          -78.1       55.4         452     
PVDR1      UNKNOWN                   TG          22          -56.5       19.8           2     
QPTR1      UNKNOWN                   TG          24          -92.0        3.0           0     
RDDA2      UNKNOWN                   TG        1083           -8.9       40.8         387     
RTAT2      UNKNOWN                   TG        1426          -32.2       23.2          62     
RTYC1      UNKNOWN                   TG        1075           21.5       46.9         413     
SDRT2      UNKNOWN                   TG        1356          -30.3       26.5         121     
TCMW1      UNKNOWN                   TG        1006           11.6       50.0         476     
TKPN6      UNKNOWN                   TG          21          -45.2       22.1           2     
ULRA2      UNKNOWN                   TG         617           44.1       45.2         127     
VDZA2      UNKNOWN                   TG         931           80.9       49.9         522     
WDSV2      UNKNOWN                   TG          18          -22.9       41.7           6     
YKTV2      UNKNOWN                   TG          22         -104.4       12.7           2     
41052                                FB        4412          -81.6        0.0           0     
42059                                FB        1253          -92.1        4.8           0     
44488                                FB         688           34.7       34.9          55     
44489                                FB         700           38.4       37.1          43     
45012                                FB        3954          -37.2       34.8         504     
45023                                FB         519          -56.4       44.5         122     
45025                                FB         522          -61.7       49.5         123     
45028                                FB         728          -45.7       38.8          88     
45029                                FB        3425          -70.5       43.6         945     
45135                                FB         692          -33.0       35.2          52     
45139                                FB         539          -16.1       39.2         204     
45161                                FB          44          -20.1       47.3          31     
45174                                FB        1095           53.5       48.1         269     
45197                                FB        1511          -32.2       36.8         103     
45209                                FB        1073         -169.5       43.6        3153     
46022                                FB        2967          158.4       35.2        1491     
46027                                FB        2745            9.3       42.0        1712     
46060                                FB         520           -1.0       48.1         222     
46081                                FB         539            2.1       50.3         204     
46088                                FB        3140           11.6       52.2        1315     
46092                                FB         283          109.9       51.8         452     
46120                                FB         111           26.4       30.3          44     
46122                                FB        1063          101.7       55.1         979     
46123                                FB        3243           64.2       49.7         837     
46146                                FB         491          -71.9       49.0         251     
46204                                FB         719          -32.9       23.2          24     
62102                                FB         740         -104.2        8.0           4     
62145                                FB         741          106.9       12.4           3     
62148                                FB         684          -30.6       28.4          60     
63112                                FB         742          -97.4        8.9           1     
23016                                DB         302          -39.2       33.8          25     
23092                                DB         128           -6.1       48.5         117     
23099                                DB         191          -61.4       41.5          47     
23497                                DB          78         -113.0       45.5         129     
                                                                                              
                                                                                              
                         MAY       2025                                                       
                    WIND SPEED FOR ALL HOURS                                                  
                                                                                              
PLATFORM   SHIP/PLAT. NAME           TYPE   NO. REPORTS    MEAN DIFF    SD DIFF    # GROSS ERR
                                                                                              
3FZI8      MSC SPLENDIDA             SHP         56            5.5        4.5           0     
4YZQEDM    UNKNOWN                   SHP         41            5.8        4.6           9     
AMOHK02    UNKNOWN                   SHP          0            0.0        0.0         245     
ATAT2      APJ JAOUAD                SHP         53           -5.3        2.3           0     
C6DL4      NORWEGIAN BLISS           SHP        177            5.5        4.1          12     
C6EF4      NORWEGIAN ENCORE          SHP        155            5.1        4.6           7     
DDGR99J    UNKNOWN                   SHP         99            5.7        4.2           2     
NEPP       USCGC HEALY               SHP         21            5.3        4.3           2     
S6AN5      MAERSK COLOMBO            SHP         55            6.7        3.5           0     
UEMM       UNKNOWN                   SHP         22            5.8        3.3           0     
V7DM2      INSIGNIA                  SHP         39            5.5        3.7           0     
VRWR7      SAGA CREST                SHP         30            5.5        3.9           0     
ANVC1      UNKNOWN                   TG        1488           -5.6        2.7           0     
CHSV3      UNKNOWN                   TG        1484           -5.2        2.0           0     
OOUH1      UNKNOWN                   TG        1488           -5.8        2.0           0     
PLXA2      UNKNOWN                   TG        1488           -5.5        3.4           0     
23497                                DB         207           -5.4        2.3           0     
                                                                                              
                                                                                              
                         MAY       2025                                                       
                SEA SURFACE TEMP. FOR ALL HOURS                                               
                                                                                              
PLATFORM   SHIP/PLAT. NAME           TYPE   NO. REPORTS    MEAN DIFF    SD DIFF    # GROSS ERR
                                                                                              
3EFK6      MSC MUSICA                SHP         29           -5.8        3.8           2     
3FON6      UNKNOWN                   SHP         25            4.4        0.6           0     
7GBN9QD    UNKNOWN                   SHP         40            4.1        1.8           0     
9HA4902    MSC BELLISSIMA            SHP         93           -4.3        4.1           2     
9HA5370    MSC SEASHORE              SHP         39           -4.2        2.1           0     
9V3912     KN AMETHYST               SHP        686            5.0        1.6           0     
9V6316     UNKNOWN                   SHP         20            4.3        0.7           0     
9V7625     EVER MAX                  SHP        287            5.2        5.1          15     
9V9288     EVER LAWFUL               SHP         43            6.7        3.6           0     
9VFV5      MAERSK ALGOL              SHP         37            4.0        1.5           0     
ALBARO     ALBARO                    SHP         20           -4.7        2.2           0     
C6CX3      NORWEGIAN JOY             SHP        349            4.7        2.7           0     
H3FV       MSC OPERA                 SHP        552           -4.0        4.9           1     
HBLLCVS    UNKNOWN                   SHP         20           -5.9        1.5           0     
HOPW       MSC LIRICA                SHP        170           -4.8        1.6           0     
LAHR7      STAR KIRKENES             SHP        143            4.7        4.1           0     
MERFR09    UNKNOWN                   SHP        118            4.8        3.7           5     
OZIB2      MAERSK LONDRINA           SHP         20            4.2        1.0           0     
PUZA8BS    UNKNOWN                   SHP        117            5.3        3.8           7     
V7A4788    MARLIN HESTIA             SHP        188           -5.5        2.6           0     
V7HH2      STI GALLANTRY             SHP         30           -4.1        1.2           0     
VRAR6      UNKNOWN                   SHP         23           -6.3        1.5           0     
WRJP       R J PFEIFFER              SHP         70            5.5        2.3           0     
MLSC1      UNKNOWN                   CMN       5401           -3.2        6.8         345     
BKTL1      UNKNOWN                   TG        1487            4.5        5.3           0     
DULM5      UNKNOWN                   TG        1413           -0.2        6.1          72     
FAIO1      UNKNOWN                   TG        1488            4.7        2.1           0     
ITKA2      UNKNOWN                   TG        1488            4.9        1.9           0     
LJAC1      UNKNOWN                   TG        1456           -1.5        6.2          32     
LOPW1      UNKNOWN                   TG        1488            2.4        6.1           0     
MNMM4      UNKNOWN                   TG        1488            4.5        5.1           0     
PEGF1      UNKNOWN                   TG        1366            5.7        1.7           0     
SKTA2      UNKNOWN                   TG        1488            4.2        3.4           0     
SWLA2      UNKNOWN                   TG        1463            6.8        3.1          25     
YATA2      UNKNOWN                   TG        1488            4.3        1.7           0     
45012                                FB        4319           -4.8        2.7           0     
45027                                FB        2283           -5.3        4.5         195     
45028                                FB         775           -5.6        4.2          30     
45136                                FB         127           -6.3        3.2           0     
45139                                FB         727           -4.4        3.9          16     
45140                                FB          78           -4.8        5.9           1     
45159                                FB         693           -4.4        4.4          48     
45219                                FB        4276           -4.6        3.9         180     
46181                                FB         744            7.4        3.7           0     
46254                                FB        1477           -1.0        6.1           8     
46256                                FB        1484           -4.0        3.3           0     
46266                                FB        1446           -1.3        6.7          38     
46274                                FB        1371           -1.3        7.0          57     
46275                                FB        1453           -1.8        6.3          24     
46276                                FB        1391           -2.9        6.9          88     
46279                                FB        1399           -2.7        7.0          86     
46284                                FB        1383           -2.5        6.7          96     
                                                                                              
TOTAL NUMBER OF OBSERVATIONS FOR MAY       2025 (EXCLUDING DUPLICATES                         
AND THOSE FROM CALLSIGN 'SHIP') WAS  2087999.  TOTAL NUMBER OF                                
OBSERVATIONS FROM CALLSIGN 'SHIP' (EXCLUDING DUPLICATES) WAS     559.                         
TOTAL NUMBER OF IDS WAS    2628.                                                              
           

Page last modified: 01 June 2025.