Model:PotentialEvapotranspiration

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PotentialEvapotranspiration

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Model type Single Model part of larger framework LandLab Note on status model Date note status model Incorporated models or components: Spatial dimensions 2D Spatial extent Regional-Scale, Landscape-Scale, Watershed-Scale Model domain Terrestrial, Hydrology, Climate, Ecosystems One-line model description Calculates potential evapotranspiration Extended model description Potential Evapotranspiration Component calculates spatially distributed potential evapotranspiration based on input radiation factor (spatial distribution of incoming radiation) using chosen method such as constant or Priestley Taylor. Ref: Xiaochi et. al. 2013 for 'Cosine' method and ASCE-EWRI Task Committee Report Jan 2005 for 'PriestleyTaylor' method. Note: Calling 'PriestleyTaylor' method would generate/overwrite shortwave & longwave radiation fields. Keywords: evapotranspiration, Name Sai Nudurupati Type of contact Institute / Organization Postal address 1 Postal address 2 Town / City Seattle Postal code 98195 State Washington Country United States Email address saisiddu@uw.edu Phone Fax Supported platforms Unix, Linux, Mac OS, Windows Other platform Programming language Python Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2015 Does model development still take place? No If above answer is no, provide end year model development 2020 Code development status Only maintenance When did you indicate the 'code development status'? 2020 Model availability As code Source code availability (Or provide future intension) Through web repository Source web address https://github.com/landlab/landlab/tree/master/landlab Source csdms web address Program license type BSD or MIT X11 Program license type other Memory requirements Typical run time Describe input parameters grid: RasterModelGrid A grid. method: {'Constant', 'PriestleyTaylor', 'MeasuredRadiationPT', 'Cosine'}, optional Priestley Taylor method will spit out radiation outputs too. priestley_taylor_constant: float, optional Alpha used in Priestley Taylor method. albedo: float, optional Albedo. latent_heat_of_vaporization: float, optional Latent heat of vaporization for water Pwhv (Wd/(m*mm^2)). psychometric_const: float, optional Psychometric constant (kPa (deg C)^-1). stefan_boltzmann_const: float, optional Stefan Boltzmann's constant (W/(m^2K^-4)). solar_const: float, optional Solar constant (W/m^2). latitude: float, optional Latitude (radians). elevation_of_measurement: float, optional Elevation at which measurement was taken (m). adjustment_coeff: float, optional adjustment coeff to predict Rs from air temperature (deg C)^-0.5. lt: float, optional lag between peak TmaxF and solar forcing (days). nd: float, optional Number of days in year (days). MeanTmaxF: float, optional Mean annual rate of TmaxF (mm/d). delta_d: float, optional Calibrated difference between max & min daily TmaxF (mm/d). current_time: float, required only for 'Cosine' method Current time (Years) const_potential_evapotranspiration: float, optional for 'Constant' method Constant PET value to be spatially distributed. Tmin: float, required for 'Priestley Taylor' method Minimum temperature of the day (deg C) Tmax: float, required for 'Priestley Taylor' method Maximum temperature of the day (deg C) Tavg: float, required for 'Priestley Taylor' and 'MeasuredRadiationPT' methods Average temperature of the day (deg C) obs_radiation float, required for 'MeasuredRadiationPT' method Observed radiation (W/m^2) Input format ASCII Other input format Describe output parameters "radiation__incoming_shortwave_flux": { "dtype": float, "intent": "out", "optional": False, "units": "W/m^2", "mapping": "cell", "doc": "total incident shortwave radiation over the time step", } "radiation__net_flux": { "dtype": float, "intent": "out", "optional": False, "units": "W/m^2", "mapping": "cell", "doc": "net total radiation over the time step", } "radiation__net_longwave_flux": { "dtype": float, "intent": "out", "optional": False, "units": "W/m^2", "mapping": "cell", "doc": "net incident longwave radiation over the time step", } "radiation__net_shortwave_flux": { "dtype": float, "intent": "out", "optional": False, "units": "W/m^2", "mapping": "cell", "doc": "net incident shortwave radiation over the time step", } "radiation__ratio_to_flat_surface": { "dtype": float, "intent": "in", "optional": False, "units": "None", "mapping": "cell", "doc": "ratio of total incident shortwave radiation on sloped surface to flat surface", } "surface__potential_evapotranspiration_rate": { "dtype": float, "intent": "out", "optional": False, "units": "mm", "mapping": "cell", "doc": "potential sum of evaporation and potential transpiration", } Output format ASCII Other output format Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? No If above answer is yes Other visualization software Describe processes represented by the model Describe key physical parameters and equations Describe length scale and resolution constraints Describe time scale and resolution constraints Describe any numerical limitations and issues Describe available calibration data sets Upload calibration data sets if available: Describe available test data sets Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? Is there a manual available? No Upload manual if available: Model website if any https://landlab.github.io Model forum / discussion board https://github.com/landlab/landlab/issues Comments This part will be filled out by CSDMS staff OpenMI compliant Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "Code openmi compliant or not" property. BMI compliant Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "BMICompliant" property. WMT component Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property. PyMT component Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code PyMT compliant or not" property. Is this a data component Can be coupled with:

Model info Authors Sai Nudurupati Source code Go to external source code site Model citations Nr. of publications: -- Total citations: 0 h-index: --"--" is not a number. m-quotient: 0 QR-code Link to this page Other models by author PotentialEvapotranspiration Radiation SoilMoisture VegCA Vegetation

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