Main File Surface/Flux (_FLX_)
This section describes the different data field stored in the main file for the surface and fluxes at the surface (…_FLX_…).
This file is only two-dimensional with a constant z=0.
The data stored in the .EDT files are in binary format and can be extracted using LEONARDO or XTract.
FIELD | UNIT | MEANING |
---|---|---|
z_topo | m | Absolute Height of Model Ground Surface (always 0 in recent version) |
T Surface | K | Ground Surface Temperature |
T Surface Diff | K | Difference of Ground Surface to Reference Surface |
T Surface Change | K/h | Change of Ground Surface Temperature |
q Surface | g/kg | Specific Humidity of Surface (availabe vapour) |
uv Above Surface | m/s | Wind Speed at the First Grid Level above Ground Surface |
Sensible Heat Flux | W/m² | Sensible Heat Flux into the Air (+: towards air) |
Exchange Coef. Heat | m²/s | Exchange Coefficient for Heat between Surface and Air |
Latent Heat Flux | W/m² | Sensible Heat Flux into the Air (+: towards air) |
Soil Heat Flux | W/m² | Heat Flux into Soil (+: directed towards deeper layers) |
SW Direct Radiation | W/m² | Direct Shortwave Radiation reaching Ground Surface |
SW Diffuse Radiation | W/m² | Diffuse Shortwave Radiation reaching Ground Surface |
Lambert Factor | 0..1 | Value of Lambert's law for Solar Angle |
Longwave Radiation Bud. | W/m² | Longwave Radiation Budget of Ground Surface |
Longwave Rad. from Vegetation | W/m² | Longwave Radiation received from Vegetation Layers above (see Remark 1) |
Longwave Rad. from Environment | W/m² | Longwave Radiation received from Buildings (see Remark 1) |
Water Flux | g/(m²s) | Water Flux from/to the Ground Surface |
Sky-View Factor | 0..1 | Sky View Factor for z=0 (buildings only counted) |
Building Height | m | Height of Building Top (0 if no building assigned) |
Surface Albedo | 0..1 | Albedo of Ground Surface (see Remark 2) |
Deposition Speed | mm/s | Deposition Flux of analysed Pollutant Component |
Mass Deposed | µg/m² | Mass deposed at Ground Surface in µg |