====== 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 Flux|Remark 1]])|
|Longwave Rad. from Environment    |W/m²       |Longwave Radiation received from Buildings (see [[Remark 1 Flux|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 Flux|Remark 2]])|
|Deposition Speed                  |mm/s       |Deposition Flux of analysed Pollutant Component|
|Mass Deposed                      |µg/m²      |Mass deposed at Ground Surface in µg|