GRIB2 - TABLE 4.2-0-1

PARAMETERS FOR DISCIPLINE 0
CATEGORY 1

(Meteorological products, Moisture category)

In Section 0, Octet 7 = 0
In Section 4, Octet 10 = 1

Revised 04/04/2013
Red text depicts changes made since 02/09/2012



Number
(In Section 4, octet 11)
Parameter Units
Abbrev
0
Specific Humidity
kg kg-1
SPFH
1
Relative Humidity
%
RH
2
Humidity Mixing Ratio
kg kg-1 MIXR
3
Precipitable Water
kg m-2 PWAT
4
Vapour Pressure
Pa
VAPP
5
Saturation Deficit
Pa
SATD
6
Evaporation
kg m-2 EVP
7
Precipitation Rate *
kg m-2 s-1 PRATE
8
Total Precipitation ***
kg m-2 APCP
9
Large-Scale Precipitation (non-convective) *** kg m-2 NCPCP
10
Convective Precipitation *** kg m-2 ACPCP
11
Snow Depth
m
SNOD
12
Snowfall Rate Water Equivalent *
kg m-2 s-1 SRWEQ
13
Water Equivalent of Accumulated Snow Depth ***
kg m-2 WEASD
14
Convective Snow ***
kg m-2 SNOC
15
Large-Scale Snow ***
kg m-2 SNOL
16
Snow Melt
kg m-2 SNOM
17
Snow Age
day
SNOAG
18
Absolute Humidity
kg m-3 ABSH
19
Precipitation Type
See Table 4.201
PTYPE
20
Integrated Liquid Water
kg m-2 ILIQW
21
Condensate
kg kg-1 TCOND
22
Cloud Mixing Ratio
kg kg-1 CLWMR
23
Ice Water Mixing Ratio kg kg-1 ICMR
24
Rain Mixing Ratio kg kg-1 RWMR
25
Snow Mixing Ratio kg kg-1 SNMR
26
Horizontal Moisture Convergence
kg kg-1 s-1 MCONV
27
Maximum Relative Humidity *
%
MAXRH
28
Maximum Absolute Humidity * kg m-3 MAXAH
29
Total Snowfall ***
m
ASNOW
30
Precipitable Water Category
See Table 4.202 PWCAT
31
Hail
m
HAIL
32
Graupel
kg kg-1 GRLE
33
Categorical Rain Code table 4.222
CRAIN
34
Categorical Freezing Rain Code table 4.222
CFRZR
35
Categorical Ice Pellets Code table 4.222 CICEP
36
Categorical Snow Code table 4.222 CSNOW
37
Convective Precipitation Rate kg m-2 s-1 CPRAT
38
Horizontal Moisture Divergence kg kg-1 s-1 MCONV
39 Percent frozen precipitation % CPOFP
40
Potential Evaporation kg m-2 PEVAP
41
Potential Evaporation Rate W m-2 PEVPR
42
Snow Cover %
SNOWC
43
Rain Fraction of Total Cloud Water
Proportion FRAIN
44
Rime Factor Numeric RIME
45
Total Column Integrated Rain kg m-2 TCOLR
46
Total Column Integrated Snow kg m-2 TCOLS
47
Large Scale Water Precipitation (Non-Convective) *** kg m-2 LSWP
48
Convective Water Precipitation *** kg m-2 CWP
49
Total Water Precipitation *** kg m-2 TWATP
50
Total Snow Precipitation *** kg m-2 TSNOWP
51
Total Column Water
(Vertically integrated total water (vapour+cloud water/ice)
kg m-2 TCWAT
52
Total Precipitation Rate ** kg m-2 s-1 TPRATE
53
Total Snowfall Rate Water Equivalent ** kg m-2 s-1 TSRWE
54
Large Scale Precipitation Rate kg m-2 s-1 LSPRATE
55
Convective Snowfall Rate Water Equivalent kg m-2 s-1 CSRWE
56
Large Scale Snowfall Rate Water Equivalent kg m-2 s-1 LSSRWE
57
Total Snowfall Rate m s-1 TSRATE
58
Convective Snowfall Rate m s-1 CSRATE
59
Large Scale Snowfall Rate m s-1 LSSRATE
60
Snow Depth Water Equivalent kg m-2 SDWE
61
Snow Density kg m-3 SDEN
62
Snow Evaporation kg m-2 SEVAP
63
Reserved

64
Total Column Integrated Water Vapour kg m-2 TCIWV
65
Rain Precipitation Rate kg m-2 s-1 RPRATE
66
Snow Precipitation Rate kg m-2 s-1 SPRATE
67
Freezing Rain Precipitation Rate kg m-2 s-1 FPRATE
68
Ice Pellets Precipitation Rate kg m-2 s-1 IPRATE
69
Total Column Integrate Cloud Water kg m-2 TCOLW
70
Total Column Integrate Cloud Ice kg m-2 TCOLI
71
Hail Mixing Ratio kg kg-1 HAILMXR
72
Total Column Integrate Hail kg m-2 TCOLH
73
Hail Prepitation Rate kg m-2 s-1 HAILPR
74
Total Column Integrate Graupel kg m-2 TCOLG
75
Graupel (Snow Pellets) Prepitation Rate kg m-2 s-1 GPRATE
76
Convective Rain Rate kg m-2 s-1 CRRATE
77
Large Scale Rain Rate kg m-2 s-1 LSRRATE
78
Total Column Integrate Water (All
components including precipitation)
kg m-2 TCOLWA
79
Evaporation Rate kg m-2 s-1 EVARATE
80
Total Condensatea kg kg-1 TOTCON
81
Total Column-Integrate Condensate kg m-2 TCICON
82
Cloud Ice Mixing Ratio kg kg-1 CIMIXR
83
Specific Cloud Liquid Water Content kg kg-1 SCLLWC
84
Specific Cloud Ice Water Content kg kg-1 SCLIWC
85
Specific Rain Water Content kg kg-1 SRAINW
86
Specific Snow Water Content kg kg-1 SSNOWW
87-89
Reserved

90
Total Kinematic Moisture Flux kg kg-1 m s-1 TKMFLX
91
U-component (zonal) Kinematic Moisture Flux kg kg-1 m s-1 UKMFLX
92
V-component (meridional) Kinematic Moisture Flux kg kg-1 m s-1 VKMFLX
93-191
Reserved

192-254
Reserved for Local Use


192
Categorical Rain Code table 4.222 CRAIN
193
Categorical Freezing Rain Code table 4.222 CFRZR
194
Categorical Ice Pellets Code table 4.222 CICEP
195
Categorical Snow Code table 4.222 CSNOW
196
Convective Precipitation Rate kg m-2 s-1 CPRAT
197
Horizontal Moisture Divergence kg kg-1 s-1 MCONV
198
Minimum Relative Humidity % MINRH
199
Potential Evaporation kg m-2 PEVAP
200
Potential Evaporation Rate W m-2 PEVPR
201
Snow Cover %
SNOWC
202
Rain Fraction of Total Liquid Water
non-dim FRAIN
203
Rime Factor non-dim RIME
204
Total Column Integrated Rain kg m-2 TCOLR
205
Total Column Integrated Snow kg m-2 TCOLS
206
Total Icing Potential Diagnostic non-dim TIPD
207
Number concentration for ice particles non-dim NCIP
208
Snow temperature K
SNOT
209
Total column-integrated supercooled liquid water kg m-2 TCLSW
210
Total column-integrated melting ice kg m-2 TCOLM
211
Evaporation - Precipitation cm/day EMNP
212
Sublimation (evaporation from snow) W m-2 SBSNO
213
Deep Convective Moistening Rate kg kg-1 s-1 CNVMR
214
Shallow Convective Moistening Rate kg kg-1 s-1 SHAMR
215
Vertical Diffusion Moistening Rate kg kg-1 s-1 VDFMR
216
Condensation Pressure of Parcali
Lifted From Indicate Surface
Pa CONDP
217 Large scale moistening rate kg kg-1 s-1 LRGMR
218 Specific humidity at top of viscous sublayer kg kg-1 QZ0
219 Maximum specific humidity at 2m kg kg-1 QMAX
220 Minimum specific humidity at 2m kg kg-1 QMIN
221 Liquid precipitation (Rainfall) kg m-2 ARAIN
222 Snow temperature, depth-avg K SNOWT
223 Total precipitation (nearest grid point) kg m-2 APCPN
224 Convective precipitation (nearest grid point) kg m-2 ACPCPN
225 Freezing Rain kg m-2 FRZR
226 Predominant Weather (see Note 1) Numeric PWTHER
227 Frozen Rain kg m-2 FROZR
241 Total Snow kg m-2 TSNOW
242
Relative Humidity with Respect to Precipitable Water
%
RHPW
255
Missing




Notes:

* Parameter deprecated - See Regulation 92.6.2 and use another parameter instead.
** Total precipitation/snowfall rate stands for the sum of convective and large-scale precipitation/snowfall rate.
*** Statistical process 1 (Accumulation) does not change units. It is recommended to use another parameter with "rate" in its name and accumulation in PDT.

(1) The numeric value is a reference to a weather string and key table stored in the Local Use Section (Section 2) of the same GRIB2 message. See MDL Template 2.1 page and this page for more details.



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