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* Metric Name: Change in average Climatic Water Deficit  

* Tier: 3  

* Data Vintage: 2022  

* Unit Of Measure: mm  

* Metric Definition and Relevance: Change in Average Annual Climatic Water Deficit - Near Future - Drier. This raster dataset represents a projection of the difference in the mean annual climatic water deficit between the baseline period (1950-1980), and a near future period ( 2030-2059) under the MIROC (Drier) scenario of climate change. It is only available for the Southern California Region.  

* Creation Method: The climate variable in this layer is the change in average annual accumulated climatic water deficit relative to a baseline period. Climatic water deficit (CWD) measures the evaporative demand that exceeds available water, reflecting the impacts of available water or drought stress on plants. Higher CWD indicates a higher level of drought stress.

Baseline annual accumulated CWD was averaged between 1950-1980

Near Future shows the average change in CWD as modeled for 2030-2059

Drier future projections were generated using the MIROC5 climate model under
the business as usual RCP 8.5.

  

* Credits: San Diego State University; Connecting Wildlands and Communities Project Team