===== How to handle deprecated atmospheric deposition input =====

If you have an older model set-up (using HYPE version before 5.17.0) and want to upgrade to use the [[start:hype_file_reference:atmdepdata.txt|AtmdepData.txt]] file here are some tips on how to get started. First read the description of the [[start:hype_file_reference:atmdepdata.txt|new file]]. Older models had atmosperic deposition given in [[start:hype_file_reference:geodata.txt|GeoData.txt]] and [[start:hype_file_reference:par.txt|par.txt]]. Both type of atmospheric deposition can be transfered to the new file.

In the parameter file ([[start:hype_file_reference:par.txt|par.txt]]) deposition of phosphorus was given. They can be transferred like this:

^ parameter ^ unit of parameter ^ description ^ replacement procedure ^
|drydeppp | //kg/(km<sup>2</sup> d)// | dry deposition of PP | Replace with columns PP_DD_L1..PP_DD_Ln, where n is the number of land uses in the model. Set the same value for all subbasins. The same unit is used for a model with daily time step, because the unit of the file is //kg/(km<sup>2</sup> ts)//.|
|wetdepsp | //μg/l// |wet deposition of SP| Replace with column SP_WD, The unit of the file is //mg/l// so multiply the value of the par file with 1000. Set the same value for all subbasins.|
|wetdepspl |//kg/(km<sup>2</sup> d)// |wet deposition load of SP on water surfaces| Replace with dry deposition in AtmdepData.txt, because it is defined as load. Set column SP_DD_V3 with the same value for all subbasins. The load will be applied on V3, i.e. vegetation type 3 (water surfaces).|

In GeoData.txt nitrogen deposition was given by subbasin and vegetation type and/or month. They can be tranfered to the new file like this: 

^ column ^ unit of geodata variable ^ description ^ replacement procedure ^
| wetdep_n | //μg/l// | wet deposition of inorganic nitrogen (IN), concentration of precipitation | Replaced by column IN_WD in AtmdepData.txt. Note the unit change to //mg/l// in the new file.|
|drydep_n1 | //kg/(km<sup>2</sup> d)// | dry deposition of inorganic nitrogen on vegetation type 1 (open) | Replaced by column IN_DD_V1 in AtmdepData.txt. The same unit is used for a model with daily time step, because the unit of the file is kg km-2 ts-1. The load will be applied on V1, i.e. vegetation type 1 (open land).|
|drydep_n2 | //kg/(km<sup>2</sup> d)// | dry deposition of inorganic nitrogen on vegetation type 2 (forest) | Replaced by column IN_DD_V2 in AtmdepData.txt.|
|drydep_n3 | //kg/(km<sup>2</sup> d)// | dry deposition of inorganic nitrogen on vegetation type 3 (water) | Replaced by column IN_DD_V3 in AtmdepData.txt.|
|deploadn1-deploadn12 | //kg/(km<sup>2</sup> d)// | total deposition of inorganic nitrogen on water, January - December | Replaced by adding as dry deposition of IN in AtmdepData.txt. Set columns IN_DD_M1_V3 ... IN_DD_M12_V3. The load will be applied on V3 (water), with different values for each month M1..M12.|