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Proposed parameters for Product discipline 0 - Meteorological products, parameter category 4: short-wave radiation
| Parameter | Units | Description | |
|---|---|---|---|
Downward short-wave radiation flux, clear sky | W m-2 | ||
| Upward short-wave radiation flux, clear sky | W m-2 | ||
| added by WMO last week! |
Question: What about "Direct short-wave radiation flux, clear sky" produced by IFS and archived in MARS under paramId 228022 (Clear-sky direct solar radiation at surface)
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Proposed parameters for Product discipline 0 - Meteorological products, parameter category 5: long-wave radiation
| Parameter | Units | Description |
|---|---|---|
Downward long-wave radiation flux, clear sky | W m-2 |
Justification: The proposed parameters are commonly computed by numerical weather prediction models and operationally archived. They are of the same type like ones already existing in WMO code tables (e.g. Downward short-wave radiation flux, Net short-wave radiation flux, clear sky). Additional information illustrating their meaning and handling can be checked in the attached document about radiation quantities in the IFS model developed by ECMWF.
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Proposed parameter for Product discipline 2 - Land surface products, parameter category 3: soil products
| Parameter | Units | Description |
|---|---|---|
Soil heat flux | W m-2 |
Justification: The heat flux is currently defined only under Product discipline 2 - Land surface products, parameter category 0: vegetation/biomass. The currently existing parameters in the same category related to soil are mostly deprecated and moved to the category 3: soil products where the soil heat flux is not defined at all.
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Proposed parameter for Product discipline 2 - Land surface products, parameter category 0: vegetation/biomass (???) Fredrik Wetterhall would rather suggest Discipline 1, category 0
| Parameter | Units | Description |
|---|---|---|
Percolation | kg m-2 |
Justification: The newly proposed percolation is the downward movement of water under hydrostatic pressure in the saturated zone.This water might still end up in rivers and lakes as discharge but it is a slower process than water runoff or drainage. Such defined percolation is an input for hydrological models together with e.g. water runoff. If percolation is to the ground water it can also be named as ground water recharge.
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Newly proposed type of level soil layer for Code table 4.5-Fixed surface types and units
| Meaning | Units | Description |
|---|---|---|
Soil layer | - |
Question: Instead of soil layer one could ask for soil level to achieve the same target described below. What would be the differences and pros or cons between them? The technical differences are easy to grasp.
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