GRIB-API definition
| Name | Surface runoff | Abbreviation | sro | Unit | kg m-2 | paramId: | 174008 |
UERRA details
| Definition | Lateral water flow occurring at the surface. |
| Validity | accumulated (from the beginning of the forecast) |
| Comment | Sea point should be set as missing values. |
WMO GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 2 | land surface products |
| Parameter Category | 0 | vegetation/biomass |
| Parameter Number | 34 | surface water runoff |
| Type of statistical processing | 1 | accumulated |
| Level | ||
|---|---|---|
| Type of first fixed surface | 1 | ground or water surface |
| Scale factor of first fixed surface | all bits to 1 | missing |
| Scaled value of first fixed surface | all bits to 1 | missing |
| Type of second fixed surface | all bits to 1 | missing |
| Scale factor of second fixed surface | all bits to 1 | missing |
| Scaled value of second fixed surface | all bits to 1 | missing |
2 Comments
Richard Mladek
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.
Richard Mladek
De: "Per Unden" <Per.Unden@smhi.se>
Envoyé: Vendredi 16 Octobre 2015 09:42:47
Objet: Re: MF specific UERRA params
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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...
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From: "BAZILE Eric" <eric.bazile@meteo.fr>
Sent: Friday, 16 October, 2015 8:50:07 AM
Subject: Re: MF specific UERRA params
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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 ?
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