Interface Output from the NCEP Marine Surface Decoder
| Mnemonic | Description | Units | Value |
|---|---|---|---|
| STID | Ship or Platform ID | CCITT IA5 | civals (icstid) |
| SLAT | Station latitude | Degrees | rivals (irslat) |
| SLON | Station longitude | Degrees | rivals (irslon) |
| SELV | Station elevation | Meters | rivals (irselv) |
| TOST | Type of station | WMO BUFR Code Table 002001 | rivals (irtost) |
| ITSO | Indicator for station operation and for present and past weather | WMO Code Table 1860 | rivals (iritso) |
| YEAR | Report year | Year | rivals (iryear) |
| MNTH | Report month | Month | rivals (irmnth) |
| DAYS | Report day | Day | rivals (irdays) |
| HOUR | Report hour | Hour | rivals (irhour) |
| MINU | Report minute | Minute | rivals (irminu) |
| TDMP | Direction of movement of ship | WMO Code Table 0700 | rivals (irtdmp) |
| ASMP | Average speed of ship | WMO Code Table 4451 | rivals (irasmp) |
| ISWS | Indicator for source and units of wind speed | WMO Code Table 1855 | rivals (irisws) |
| DRCT | Wind direction | Degrees true | rivals (irdrct) |
| SPED | Wind speed | Meters / Sec | rivals (irsped) |
| NSPW | Number of supplementary wind groups | Numeric | rivals (irnspw) |
| SPWP | Supplementary wind period | Minutes | rivals (irspwp(1..NSPW)) |
| SPWS | Supplementary wind speed | Meters / Sec | rivals (irspws(1..NSPW)) |
| SPWT | Supplementary wind type groups | Code Table | rivals (irspwt(1..NSPW)) |
| XS10 | 10-meter extrapolated wind speed | Meters / Sec | rivals (irxs10) |
| XS20 | 20-meter extrapolated wind speed | Meters / Sec | rivals (irxs20) |
| PWYR | Year of peak wind observation | Year | rivals (irpwyr) |
| PWMO | Month of peak wind observation | Month | rivals (irpwmo) |
| PWDY | Day of month of peak wind observation | Day | rivals (irpwdy) |
| PWHR | Hour of peak wind observation | Hour | rivals (irpwhr) |
| PWMN | Minute of hour of peak wind observation | Minute | rivals (irpwmn) |
| PWSP | Peak wind speed | Meters / Sec | rivals (irpwsp) |
| PWDR | Peak wind direction | Degrees True | rivals (irpwdr) |
| NCWD | Number of sets of continuous wind groups | Numeric | rivals (irncwd) |
| TPMI | Time displacement of continuous wind groups | Minutes | rivals (irtpmi(1..NCWD)) |
| WDSC | Speed of continuous wind | Meters / Sec | rivals (irwdsc(1..NCWD)) |
| WDRC | Direction of continuous wind | Degrees True | rivals (irwdrc(1..NCWD)) |
| PRES | Station pressure | Hectopascals | rivals (irpres) |
| PMSL | Mean sea level pressure | Hectopascals | rivals (irpmsl) |
| CHPT | Characteristic of 3-hourly pressure tendency | WMO Code Table 200 | rivals (irchpt) |
| 3HPC | 3-hourly pressure change | Hectopascals | rivals (ir3hpc) |
| P03D | appp 3-hourly pressure change group | Numeric | rivals (irp03d) |
| 24PC | Amount of surface pressure change in last 24 hours | Hectopascals | rivals (ir24pc) |
| TMPC | Temperature | Degrees Celsius | rivals (irtmpc) |
| DWPC | Dewpoint temperature | Degrees Celsius | rivals (irdwpc) |
| RELH | Relative humidity | Percent | rivals (irrelh) |
| MSST | Indicator for sign and type of measurement of sea surface temperature | Code Table 3850 | rivals (irmsst) |
| SSTC | Sea surface temperature | Degrees Celsius | rivals (irsstc) |
| STMWC | Indicator for sign and type of measurement of wet bulb temperature | WMO Code Table 3855 | rivals (irstwc) |
| TMWC | Wet bulb temperature | Degrees Celsius | rivals (irtmwc) |
| DTFV1 | Period of maximum air temperature | Hours | rivals (irdtv1) |
| MXTM | Maximum air temperature | Degrees Celsius | rivals (irmxtm) |
| DTFV2 | Period of minimum air temperature | Hours | rivals (irdtv2) |
| MITM | Minimum air temperature | Degrees Celsius | rivals (irmitm) |
| WWMO | Present weather reported from a manned weather station | WMO Code Table 4677 | rivals (irwwmo) |
| WWMA | Present weather reported from an automatic weather station | WMO Code Table 4680 | rivals (irwwma) |
| PWWM | Past weather 1 reported from a manned weather station | WMO Code Table 4561 | rivals (irpwwm) |
| PWWA | Past weather 1 reported from an automatic weather station | WMO Code Table 4531 | rivals (irpwwa) |
| PSW2 | Past weather 2 reported from a manned weather station | WMO Code Table 4561 | rivals (irpsw2) |
| PWA2 | Past weather 2 reported from an automatic weather station | WMO Code Table 4531 | rivals (irpwa2) |
| PWPD | Period of the past weather | Hours | rivals (irpwpd) |
| INPC | Indicator for inclusion or omission of precipitation data | WMO Code Table 1819 | rivals (irinpc) |
| NPCV | Number of precipitation values | Numeric | rivals (irnpcv) |
| PPRD | Period of the precipitation | Hours | rivals (irpprd(1..NPCV)) |
| PAMT | Precipitation amount | Millimeters | rivals (irpamt(1..NPCV)) |
| WPER | Period of the waves obtained by instrumental methods | Seconds | rivals (irwper) |
| WHGT | Height of the waves obtained by instrumental methods | Meters | rivals (irwhgt) |
| POWW | Period of the wind waves | Seconds | rivals (irpoww) |
| HOWW | Height of the wind waves | Meters | rivals (irpoww) |
| NSWV | Number of sets of swell wave groups | Numeric | rivals (irnswv) |
| DOSW | True direction from which swell waves are coming | Degrees | rivals (irdosw(1..NSWV)) |
| POSW | Period of swell waves | Seconds | rivals (irposw(1..NSWV)) |
| HOSW | Height of swell waves | Meters | rivals (irhosw(1..NSWV)) |
| VSBK | Horizontal visibility | Kilometers | rivals (irvsbk) |
| VRTM | Vertical visibility | Meters | rivals (irvrtm) |
| CFRT | Total cloud cover | WMO Code Table 2700 | rivals (ircfrt) |
| NCLO | Total number of cloud layers described in Sections 1 and 3 | Numeric | rivals (irnclo) |
| VSSO | Vertical significance | WMO BUFR Table 008002 | rivals (irvsso(1..NCLO)) |
| CLAM | Cloud amount | WMO BUFR Table 020011 | rivals (irclam(1..NCLO)) |
| CLTP | Genus of cloud | WMO BUFR Table 020012 | rivals (ircltp(1..NCLO)) |
| HOCB | Height of cloud base | Meters | rivals (irhocb(1..NCLO)) |
| CSEC | Report section of location of cloud data | Numeric | rivals (ircsec(1..NCLO)) |
| HBLCS | Height of base of lowest cloud seen | WMO Code Table 1600 | rivals (irhblc) |
| COIA | Ice accretion on ships | WMO Code Table 1751 | rivals (ircoia) |
| IDTH | Thickness of ice accretion on ships | Meters | rivals (iridth) |
| ROIA | Rate of ice accretion on ships | WMO Code Table 3551 | rivals (irroia) |
| TLLW | Tide elevation with respect to mean lower low water | Feet | rivals (irtllw) |
