Look for complete geospatial metadata in this layer's associated xml document available from the download link

* Metric Name: Potential Climate Refugia – under Modeled Climate Change (MIROC Model – Hotter and Drier) and CNRM-CM5 (Wetter and Warmer))  

* Tier: 3  

* Data Vintage: 2016  

* Unit Of Measure: 0, 1, 2, 3, 8, 9 Low values indicate higher resilience to threats. High values indicate significant exposure to climate change. -1 represents ‘non analog’ areas, i.e. locations that are outside the historic climate envelope of a given vegetation type.  

* Represent element and pillar: No  

* Type and distribution of data: Asymmetric distribution representing index values. Raw data values range from 1 to 6994.  

* Translation: Where is protection from disturbances lowest?  

* Translation method and outcome: Raw data values translated to range from +1 to -1 representing more favorable to less favorable conditions, respectively. **** The proposition of more favorable is based on the objective of low significant exposure to climate change (negative linear slope). More favorable (translated to +1) set at 0 probability, less favorable (translated to -1) set at > 6994.

Figure . Histogram and scoring criterion of potential climate refugia, under
combined modeled climate change, MIROC model and CNRM-CM5, in Southern
California

Figure . Histogram of translated potential climate refugia, under combined
modeled climate change, MIROC model and CNRM-CM5, in Southern California

Figure . Maps displaying raw metric and translated metric potential climate
refugia, under combined modeled climate change, MIROC model and CNRM-CM5, in
Southern California.

  

* Metric Definition and Relevance: This raster dataset represents habitat types (Macro Veg Type, largely equivalent to CWHR habitat classes) and their predicted exposure to climate stress across the array of predicted climate conditions (separate layers for early (2010 - 2039), mid (2040-2069), and late century (2070-2099)) for all habitat types in comparison to the baseline climate conditions. This serves as the foundation from which habitat types will be exposed to predicted changes in climate. Data are arrayed across 0 to 1 in terms of their exposure to current climate conditions. These three data layers can be used to help land managers allocate limited resources for climate-adaptive field work by providing a view of climate risk that varies across the lands they manage.

This analysis uses both the Miroc Earth System Model and the CNRM-CM5. CNRM-
CM5 is an Earth system model designed to run climate simulations. It consists
of several existing models designed independently and coupled through the
[OASIS](http://pantar.cerfacs.fr/3-26568-OASIS.php) software. Both were used
under the RCP 8.5 emission scenario given that this is more likely under
current emission levels.

This data layer is provided as a summary of likely exposure results. Exposure
Scores:

· 1 = Refugia: CNRM-CM5 only (CNRM exposure values < 80%)

· 2 = Refugia: MIROC-ESM only (MIROC exposure values < 80%)

· 3 = Refugia Consensus (both models agree exposure values < 80%)

· **8 = High Exposure (both models agree exposure values >95%)**

· **9 = Very High Exposure (both models agree exposure values >99%)**

  

* Credits: Information Center for the Environment, UC Davis \--Jim Thorne