====== Main File Atmosphere (_ATM_) ======

This section describes the different data field stored in the main file for the atmosphere (..._AT_...).

The data stored in the .EDT files are in binary format and can be extracted using LEONARDO or XTract.

 
//<-- please scale window for correct formatting ! -->//
 

^FIELD                                    ^UNIT           ^MEANING ^ 
|z                                        |m              |Model Height of data (Cartesian coo.)|
|Classed LAD                              |-              |Classified LAD and ID for buildings (see [[Remark 1]])|
|Flow u                                   |m/s            |Wind Speed u-component|
|Flow v                                   |m/s            |Wind Speed v-component|
|Flow w                                   |m/s            |Wind Speed w-component|
|Wind Speed                               |m/s            |Total Wind Speed|
|Wind Speed Change                        |%              |Change of Wind Speed comp. to inflow|
|Wind Direction                           |deg            |Direction of the Wind Flow relative to geographic north|
|Pressure Perturb                         |Pa             |Relative Pressure Perturbation|
|Pot. Temperature                         |K              |Potential Air Temperature|
|Pot. Temperature (Diff K)                |K              |Potential Air Temperature difference to inflow|
|Pot. Temperature Change                  |K/h            |Change of Air Temperature with time (see [[Remark 2]])|
|Spec. Humidity                           |g/kg           |Specific Humidity Air|
|Relative Humidty                         |%              |Relative Humidity of Air|
|TKE                                      |m²/s²          |Turbulent Kinetic Energy|
|Dissipation                              |m³/s²          |Dissipation of TKE|
|Vertical Exchange Coef. I.               |m²/s           |Vertical Turbulent Exchange Coefficient Km|
|Horizontal Exchange Coef.                |m²/s           |Horizontal Turbulent Exchange Coefficient Km|
|Absolute LAD                             |m²/m³          |Leaf Area Density|
|Direct SW Radiation                      |W/m²           |Shortwave Direct Radiation  (see [[Remark 3]])|
|Diffuse SW Radiation                     |W/m²           |Shortwave Diffuse Radiation (see [[Remark 3]])|
|Reflected SW Radiation                   |W/m²           |Shortwave Direct Radiation  (see [[Remark 3]])|
|Longwave Rad. Environment                |W/m²           |Longwave Radiation received from the environment|
|Sky-View-Factor Buildings                |-              |Sky-View-Factor (only buildings considered)|
|Sky-View-Factor Buildings & Vegetation   |-              |Sky-View-Factor (buildings plus vegetation considered)|
|Temperature Flux                         |K*m/s          |Temperature Flux from Vegetation per Unit Leaf Area (see [[Remark 4]])|                        
|Vapour Flux                              |g/kg*m/s       |Vapour Flux from Vegetation per Unit Leaf Area (see [[Remark 4]])|  
|Water on Leafs                           |g/m²           |Amount of Liquid Water on Leafs|
|WallTemp Cellborder x                    |K              |Wall Temperature Wall x-axis (see [[kb:walls|Knowledgebase - Wall Temperatures]])|
|WallTemp Cellborder y                    |K              |Wall Temperature Wall y-axis (see [[kb:walls|Knowledgebase - Wall Temperatures]])|
|WallTemp Cellborder z                    |K              |Wall Temperature Wall z-axis (see [[kb:walls|Knowledgebase - Wall Temperatures]])|
|Leaf Temperature                         |K              |Temperature of Leafs in Grid Box|
|Local Mixing Length                      |m              |Mixing length calculated from the TKE-Dissipation
|PMV Value                                |-              |PMV value (see [[[PMV]|[PVM]-Section]])|
|PPD Value                                |%              |Percentage People Dissatisfied (see [[[PMV]|[PVM]-Section]])|
|Mean Radiant Temperature                 |K              |Mean Radiative Temperature|
|Gas/Particle Concentration               |µg/m³          |Concentration of selected Particle or Gas in microgram|
|Gas/Particle Source                      |µg/s           |Emission Rate of Particle or Gas Source in microgram|
|Deposition Velocity                      |mm/s           |Deposition Velocity (only at surfaces)|
|Total Deposed Mass                       |µg/m²          |Total Amount of Mass Deposed to Ground or Leaf Surface Unit Area since Start (see [[Remark 5]])|
|Deposed Mass Time Averaged               |µg/(m²s)       |Average Amount of Mass deposed per hour (see [[Remark 5]])|
|TKE normalised 1D                        |-              |TKE normalised with 1D Profile (E/E_1D)|
|Dissipation normalised 1D                |-              |Dissipation normalised with 1D Profile (Eps/eps_1d)|
|Km normalised 1D                         |-              |Vertical Km norm. with 1D Profile (Km/Km_1D)|
|TKE Mechnaical Prod                      |-              |Turbulence Production due to Wind Shear (Tensor Deformation)|
|Stomata Resistance                       |m/s            |Stomata Resistance of Plant
|CO<sub>2</sub>                           |mg/m³          |CO<sub>2</sub> Concentration (if A-gs Model used, see [[[PLANTMODEL]|[PLANTMODEL]-Section]])|
|CO<sub>2</sub>                           |ppm            |CO<sub>2</sub> Concentration in ppm (")
|Plant CO<sub>2</sub> Flux                |mg/kg*m/s      |CO<sub>2</sub> Flux per Unit Leaf Area (see remark 4)
|Div Rlw Temp Change                      |K/h            ||Air Temperature Change due to Longwave Flux Divergence
|Local Mass Budget                        |µg/(s*m³)      |Local Pollutant Mass Budget of Grid Cell (-: Net Deposition)