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apps:forcingmanager [2020/04/08 16:41] – [ForcingManager] enviadminapps:forcingmanager [2023/08/13 19:04] (current) crm
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 If you have exact weather data for your simulation area originating from e.g. measurements and would like to use this data to simulate your model in ENVI-met, you can create a *.CSV-file and convert the data to a Full Forcing File. The *.CSV-file needs to follow the formatting specifications given below. If you have exact weather data for your simulation area originating from e.g. measurements and would like to use this data to simulate your model in ENVI-met, you can create a *.CSV-file and convert the data to a Full Forcing File. The *.CSV-file needs to follow the formatting specifications given below.
  
-{{:apps:fo_csv_header.png?nolink|}} +After indicating your CSV settings (separators and heading), deciding whether you would like to force either radiation or cloud coverage, and defining the measurement heights of your data, you can import your data to an ENVI-met Forcing File. Regarding the columns for radiation / cloud coverage: Depending on the data you have, you can either enter the cloud cover for the different height levels (in octas) or the radiation (splitted into shortwave direct, diffuse and longwave radiation). Depending on what you choose, you have to tell the forcing manager how to interpret these columns, as cloud cover or as radiation data.
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-After indicating your CSV settings (separators and heading), deciding whether you would like to force either radiation or cloud coverage, and defining the measurement heights of your data, you can import your data to an ENVI-met Forcing File.+
  
  
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 Using input data from local weather files can be a good way to realistically force your simulation boundary conditions. There are many types of weather files available and ENVI-met currently allows the import of *.EPW and *.TRY weather files. The Forcing Manager automatically reads the file format and converts it into a forcing file usable in the simulation process. Using input data from local weather files can be a good way to realistically force your simulation boundary conditions. There are many types of weather files available and ENVI-met currently allows the import of *.EPW and *.TRY weather files. The Forcing Manager automatically reads the file format and converts it into a forcing file usable in the simulation process.
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 +**Choosing what to force**
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 +When preparing a simulation, you need to tell ENVI-met which of the data provided by the full forcing shall be used in the simulation. We only recommend forcing precipitation if you planning to simulate very long periods of time (several months). To learn about precipitation you can click here.
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 +**Data check**
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 +Please check all forced values: Do radiation values look unreasonable to you? Are wind speeds too low (<0.8 m/s) or too high (> 5 m/s). Is the wind direction rapidly and strongly changing between timesteps (e.g. from 0° to 180° within one hour)? Are the relative humidity values too high for your high temperature values, resulting in a very high specific humidity?
  
 ===== Usage of Forcing File ===== ===== Usage of Forcing File =====
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 Once created, the Forcing File can then be used as meteorological input data for the simulation run in ENVI_MET. The usage of the file can be defined in the [[apps:enviguide|ENVIguide]]. Here, you can determine which file is to be used and which parameters are to be forced.  Once created, the Forcing File can then be used as meteorological input data for the simulation run in ENVI_MET. The usage of the file can be defined in the [[apps:enviguide|ENVIguide]]. Here, you can determine which file is to be used and which parameters are to be forced. 
  
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-//Work in progress...//