C1.1 Main File Atmosphere (_ATM_)
see also: Main File Surface (_FLX_), Main File Soil (_SOI_)
4Overview all output files , Overview Main Files
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.
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FIELD UNIT MEANING
z m Model height of data (Cartesian coo.)
Classed LAD - Classified LAD and ID for buildings (see remark)
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 temp. difference to inflow
Pot. Temperature Change K/h Change of Air Temperature with time (see remark)
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)
Diffuse SW Radiation W/m² Shortwave Diffuse Radiation (see remark)
Reflected SW Radiation W/m² Shortwave Direct Radiation (see remark)
Longwave Rad. Environment W/m² Longwave Radiation received from the environment
Sky-View-Factor Buildings - Sky-View-Factor (only buildings considered)
Sky-View-Factor Bld+ Vegetation- Sky-View-Factor (buildings plus vegetation considered)
Temperature Flux K*m/s Temperature flux from vegetation per unit leaf area (see remark)
Vapour Flux g/kg*m/s Vapour flux from vegetation per unit leaf area (see remark)
Water on leafs g/m² Amount of liquid water on leafs
WallTemp Cellborder x K Wall Temperature Wall x-axis (see Knowledgebase 12)
WallTemp Cellborder y K Wall Temperature Wall y-axis (see remark)
WallTemp Cellborder z K Wall Temperature Wall z-axis (see remark)
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] section))
PPD Value % Percentage People Dissatisfied (see [PMV] 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 (*)
Deposed Mass time averaged µg/(m²s)Average Amount of mass deposed per hour (*)
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
CO2 mg/m³ CO2 concentration (if A-gs model used, see [PLANTMODEL] section)
CO2 ppm CO2 concentration in ppm (")
Plant CO2 flux mg/kg*m/s CO2 flux per unit leaf area (see remark)
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)