Name | Volumetric transpiration stress-onset (soil moisture) | Abbreviation | voltso | Unit | m3 m-3 | paramId | 260211 |
Definition | Soil water content 2 days after saturation. |
Validity | instantaneous |
Comment | It is an auxiliary field which should be supplied with the field Volumetric soil water. It should be archived with the same frequency as the static fields. |
WMO GRIB2 definition
Parameter | ||
---|---|---|
Discipline | 2 | land surface products |
Parameter category | 3 | soil products |
Parameter number | 11 | Volumetric transpiration stress - onset (soil moisture) |
Level | ||
---|---|---|
Type of first fixed surface | 151 | soil level** |
Scale factor of first fixed surface | 0 | |
Scaled value of first fixed surface | 0/1/2/3/.../X-1 | n-1 for the nth soil layer |
Type of second fixed surface | 151 | soil level* |
Scale factor of second fixed surface | 0 | |
Scaled value of second fixed surface | 1/2/3/.../X | n for the nth soil layer |
**newly approved level type (WMO release in May 2016)
5 Comments
Richard Mladek
Only M-F is going to produce it and it should be a constant for given grid-point.
The volumetric version of field capacity does not exist yes in ECMWF's parameter database and will have to be added to the new version of GRIB-API.
Richard Mladek
The paramID 260211 was identified as existing and equivalent to Volumetric field capacity so no need for the new one.
Richard Mladek
We will have to specify to which level to relate this parameter. Generally they are soil depth dependant but not in UERRA case where they are constant (in M-F outputs). We should consider what is the best for the future as well in after UERRA life as other people may need to reuse those definitions too.
Edward Comyn-Platt
There seems to some conflicts in the variable descriptions in this page.
The page title is the Volumetric field capacity:
Whereas the name describes the "critical point":
The definition to me describes the wilting point:
All these are different CF compliant variables. It would be nice to get some clarity on this as we are trying to ingest into the CDS-toolbox. Any idea who would be good to contact?
Many thanks,
Eddy
Richard Mladek
I fixed it hopefully as per Field capacity defined for TIGGE. Thanks.