GRIB2 - TABLE 4.2-1-0
PARAMETERS FOR DISCIPLINE 1
CATEGORY 0
(Hydrological products, Basic Hydrology category)
Section 0 , Octet 7 = 1
Section 4, Octet 10 = 0
Revised 02/21/06

Number (Section 4, octet 11) | Parameter | Units | Abbrev
0 | Flash Flood Guidance (Encoded as an accumulation over a floating subinterval of time between the reference time and valid time) | kg m-2 |
1 | Flash Flood Runoff (Encoded as an accumulation over a floating subinterval of time) | kg m-2 |
2 | Remotely Sensed Snow Cover | See Table 4.215 |
3 | Elevation of Snow Covered Terrain | See Table 4.216 |
4 | Snow Water Equivalent Percent of Normal | % |
5 | Baseflow-Groundwater Runoff | kg m-2 | BGRUN
6 | Storm Surface Runoff | kg m-2 | SSRUN
7-191 | Reserved |  |
192-254 | Reserved for Local Use |  |
192 | Baseflow-Groundwater Runoff | kg m-2 |
193 | Storm Surface Runoff | kg m-2 |
255 | Missing |  |

Notes: (1) Remotely sensed snow cover is expressed as a field of dimensionless, thematic values. The currently accepted values are for no-snow/no-cloud, 50, for clouds, 100, and for snow, 250. See code table 4.215. (2) A data field representing snow coverage by elevation portrays at which elevations there is a snow pack. The elevation values typically range from 0 to 90 in 100m increments. A value of 253 is used to represent a no-snow/no-cloud data point. A value of 254 is used to represent a data point at which snow elevation could not be estimated because of clouds obscuring the remote sensor (when using aircraft or satellite measurements). (3) Snow water equivalent percent of normal is stored in percent of normal units. For example, a value of 110 indicates 110 percent of the normal snow water equivalent for a given depth of snow.

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