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Annual average values for precipitation for the last 30 years (1992-2022) from the PRISM datasets at 800m resolution. The 800m PRISM data contains the same measured rainfall gage data as the 4km PRISM; it merely interpolates the 4km data to an 800m resolution. Evapotranspiration (ET) is a significant component in the climate and was considered when creating CETWI. Subtracting the ET from the precipitation quantifies the available precipitation within the region. Measurement of ET has been problematic outside of the Great Plains and across the continent. Sanford and Selnick published a paper on their technique and the algorithm they developed. (Sanford, Ward E. and David L. Selnick, 2012. Estimation of Evapotranspiration Across the Conterminous Uni-ted States Using a Regression with Climate and Land-Cover Data. Journal of the American Water Resources Association (JAWRA) 49(1): 217-230. DOI: 10.1111⁄jawr.12010. Estimation of Evapotranspiration Across the Conterminous United States Using a Regression With Climate and Land‐Cover Data1 (wiley.com)). The PRISM 800m 30 year average precipitation is weighted into a effective precipitation metric by multiplying the ET metric developed to generate the final climate input to the CETWI model.
Purpose: The purpose of the climate dataset is to capture the spatial variability of precipitation within the CETWI study area to better inform the hydrology model that influences topographic wetness potential. This dataset is a function of a 30 year average precipitation derived from the PRISM dataset modified by an Evapotranspiration model developed by (Sanford, Ward E. and David L. Selnick, 2012).
Creation Date: 20240719
Publication Date: 20240719
Revision Date:
Refresh Cycle: Updated periodically as new imagery becomes available
Version: 1.0.0
Change Log: Service deployed.
Annual average values for precipitation for the last 30 years (1992-2022) from the PRISM datasets at 800m resolution. The 800m PRISM data contains the same measured rainfall gage data as the 4km PRISM; it merely interpolates the 4km data to an 800m resolution. Evapotranspiration (ET) is a significant component in the climate and was considered when creating CETWI. Subtracting the ET from the precipitation quantifies the available precipitation within the region. Measurement of ET has been problematic outside of the Great Plains and across the continent. Sanford and Selnick published a paper on their technique and the algorithm they developed. (Sanford, Ward E. and David L. Selnick, 2012. Estimation of Evapotranspiration Across the Conterminous Uni-ted States Using a Regression with Climate and Land-Cover Data. Journal of the American Water Resources Association (JAWRA) 49(1): 217-230. DOI: 10.1111⁄jawr.12010. Estimation of Evapotranspiration Across the Conterminous United States Using a Regression With Climate and Land‐Cover Data1 (wiley.com)). The PRISM 800m 30 year average precipitation is weighted into a effective precipitation metric by multiplying the ET metric developed to generate the final climate input to the CETWI model.
Purpose: The purpose of the climate dataset is to capture the spatial variability of precipitation within the CETWI study area to better inform the hydrology model that influences topographic wetness potential. This dataset is a function of a 30 year average precipitation derived from the PRISM dataset modified by an Evapotranspiration model developed by (Sanford, Ward E. and David L. Selnick, 2012).
Creation Date: 20240719
Publication Date: 20240719
Revision Date:
Refresh Cycle: Updated periodically as new imagery becomes available
Version: 1.0.0
Change Log: Service deployed.