GRIBv2 - Table 4.2-0-1 Meteorological

GRIB2 - TABLE 4.2-0-1

PARAMETERS FOR DISCIPLINE 0
CATEGORY 1
(Meteorological products, moisture category)

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

Revised 01/14/2009
Red text depicts changes made since 10/30/2008

Number (Section 4, octet 11)	Parameter	Units	Abbrev
0	Specific Humidity	kg kg^-1	SPF H
1	Relative Humidity	%	R H
2	Humidity Mixing Ratio	kg kg^-1	MIXR
3	Precipitable Water	kg m^-2	P WAT
4	Vapor Pressure	Pa	VAPP
5	Saturation Deficit	Pa	SAT D
6	Evaporation	kg m^-2	EVP
7	Precipitation Rate	kg m^-2 s^-1	PRATE
8	Total Precipitation	kg m^-2	A PCP
9	Large-Scale Precipitation (non-convective)	kg m^-2	NCPCP
10	Convective Precipitation	kg m^-2	ACPCP
11	Snow Depth	m	SNO D
12	Snowfall Rate Water Equivalent	kg m^-2 s^-1	SRWEQ
13	Water Equivalent of Accumulated Snow Depth	kg m^-2	WEASD
14	Convect Snow	kg m^-2	SNO C
15	Large-Scale Snow	kg m^-2	SNO L
16	Snow Melt	kg m^-2	SNO M
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	Grauple	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 Liquid 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^-2s^-1	TPRATE
53	Total Snowfall Rate Water Equivalent	kg m^-2s^-1	TSRWE
54	Large Scale Precipitation Rate	kg m^-2s^-1	LSPRATE
55	Convective Snowfall Rate Water Equivalent	kg m^-2s^-1	CSRWE
56	Large Scale Snowfall Rate Water Equivalent	kg m^-2s^-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^-2s^-1	RPRATE
66	Snow Precipitation Rate	kg m^-2s^-1	SPRATE
67	Freezing Rain Precipitation Rate	kg m^-2s^-1	FPRATE
68	Ice Pellets Precipitation Rate	kg m^-2s^-1	IPRATE
69-191	Reserved
192-254	Reserved for Local Use
192	Categorical Rain (yes=1; no=0)	non-dim	CRAIN
193	Categorical Freezing Rain (yes=1; no=0)	non-dim	CFRZR
194	Categorical Ice Pellets (yes=1; no=0)	non-dim	CICEP
195	Categorical Snow (yes=1; no=0)	non-dim	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	SNO T
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/s	LRGMR
218	Specific humidity at top of viscous sublayer	kg/kg	QZ0
219	Maximum specific humidity at 2m	kg/kg	QMAX
220	Minimum specific humidity at 2m	kg/kg	QMIN
221	Liquid precipitation (rainfall)	kg/m²	ARAIN
222	Snow temperature, depth-avg	K	SNOWT
223	Total precipitation (nearest grid point)	kg/m²	APCPN
224	Convective precipitation (nearest grid point)	kg/m²	ACPCPN
225	Freezing Rain	kg/m²	FRZR
226	Predominant Weather	Numeric (See note 3)	PWTHER
255	Missing

Notes:

(1) Parameter deprecated - See Regulation 92.6.2 and use another parameter instead.
(2) Total precipitation/snowfall rate stands for the sum of convective and large-scale precipitation/snowfall rate.
(3) 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:
1- GRIB2 Encoding Details for the NWS Digital Forecast Database
2- NDFD and Weather for more details.

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