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start:hype_model_description:processes_above_ground [2019/03/19 16:08]
cpers [Alternative potential evaporation models]
start:hype_model_description:processes_above_ground [2019/03/19 16:12] (current)
cpers [Evaporation]
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 |Figure 3 Soil temperature factor for reduction of soil evapotranspiration. Parameter values: //​ttrip//​=1,​ //​tredA//​=0.5,​ //​tredB//​=1.| |Figure 3 Soil temperature factor for reduction of soil evapotranspiration. Parameter values: //​ttrip//​=1,​ //​tredA//​=0.5,​ //​tredB//​=1.|
  
-The actual evaporation is set to zero for temperatures below the threshold temperature and for negative potential evaporation estimates (condensation). ​The soil evapotranspiration reduction is calculated as:+The soil temperature ​evapotranspiration reduction is calculated as:
  
 <m> factor = 1-e^( - tredA*(soiltemp-ttrig)^tredB) </m> <m> factor = 1-e^( - tredA*(soiltemp-ttrig)^tredB) </m>
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 <m> evapp = evapp*factor </m> <m> evapp = evapp*factor </m>
  
-A river with an area (is a class), flooded floodplains and lakes are assumed to evaporate at the potential rate, when the air temperature is above the threshold temperature (//ttmp//). Evaporation is limited by the water body's volume.+The actual soil evaporation is set to zero for temperatures below the threshold temperature and for negative potential evaporation estimates (condensation). 
 + 
 +A river with an area (i.e. is a class), flooded floodplains and lakes are assumed to evaporate at the potential rate, when the air temperature is above the threshold temperature (//ttmp//). Evaporation is limited by the water body's volume.
  
  
start/hype_model_description/processes_above_ground.txt · Last modified: 2019/03/19 16:12 by cpers