GRIB-API definition

NameSurface runoffAbbreviationsroUnitkg m-2paramId:174008

 

UERRA details

DefinitionLateral water flow occurring at the surface.
Validity

accumulated (from the beginning of the forecast)

CommentSea point should be set as missing values.

 

WMO GRIB2 definition

Parameter
Discipline2land surface products
Parameter Category0vegetation/biomass
Parameter Number34
surface water runoff
Type of statistical processing1accumulated
Level
Type of first fixed surface1ground or water surface
Scale factor of first fixed surfaceall bits to 1missing
Scaled value of first fixed surfaceall bits to 1missing
Type of second fixed surfaceall bits to 1missing
Scale factor of second fixed surfaceall bits to 1missing
Scaled value of second fixed surfaceall bits to 1missing

2 Comments

  1. Eric Bazile (Sent: Thursday, 15 October, 2015 2:36:35 PM)

    Runoff is the water going out the surface reservoir (after precipitation) : lateral path (water is lost for the model). Drainage is the water at the bottom of the deepest layer : vertical. Both are used as input for hydrological model. For runoff and drainage: accumulated Kg/m2 for one hour. I think, in general, for fields available hourly, the accumulated period will be 1 hour.

  2. De: "Per Unden" <Per.Unden@smhi.se>
    Envoyé: Vendredi 16 Octobre 2015 09:42:47
    Objet: Re: MF specific UERRA params

    ...
    1. I don't think we should have specific accumulation time like 1 hour, rather keep having since the start of the forecast as I think is already...

    ...

    From: "BAZILE Eric" <eric.bazile@meteo.fr>
    Sent: Friday, 16 October, 2015 8:50:07 AM
    Subject: Re: MF specific UERRA params

    ...
    1- I agreed for the 3D forecast but for the re-analysis and SURFEX it is difficult especially for SURFEX output such as surface fluxes it means since the 1/1/1960 ?

    ...