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California Department of Water Resources

The Department of Water Resources (DWR) is responsible for managing and protecting California’s water resources. DWR works with other agencies to benefit the State’s people and to protect, restore and enhance the natural and human environments.

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CIMIS Spatial ETo maps

The dataset contains daily grass-reference evapotranspiration (ETo) maps stored as ASCII files. ETo at a 2 km spatial resolution are calculated statewide using the American Society of Civil Engineers version of the Penman-Monteith equation (ASCE-PM). Required input parameters for the ASCE-PM ETo equation are solar radiation, air temperature, relative humidity, and wind speed at two meters height. These parameters are estimated for each 2 km pixel using various methods.

Daily solar radiation is generated from the visible band of the National Oceanic and Atmospheric Administration's (NOAA) Geostationary Operational Environmental Satellite (GOES) using the Heliosat-II model. This model is designed to convert images acquired by the Meteosat satellite into maps of global (direct plus diffused) irradiation received at ground level.

Source: CNRA DWR
FieldValue
Publisher
Modified
2018-07-02T21:20:10.299619
Release Date
2018-07-02
Identifier
74b3a94a-f044-4e9c-9cd2-ca6f5b7d9be1
Contact Name
DWR CIMIS Public Contact
Contact Email
Public Access Level
Public
POD Theme
Water
Harvested from CNRA DWR
Harvest Source TitleCNRA DWR
Harvest Source URIhttps://data.cnra.ca.gov/data.json
Last Harvest PerformedFri, 04/19/2019 - 06:32