University of Alaska Fairbanks • Scenarios Network for Alaska + Arctic Planning

Alaska + Arctic Geospatial Data API

Built by the Scenarios Network for Alaska + Arctic Planning

Temperature and Precipitation Data

The endpoints here provide access to 2km downscaled temperature and precipitation data for future (AR5/CMIP5) and historical (CRU TS 4.0) scenarios. There are endpoints for either of these variables individually or in combination. These data are for use in the Northern Climate Reports webapp, and have thus been clipped to the working domain of the Integrated Ecosystem Model (IEM) project.

Service endpoints

There are endpoints for point queries and aggregations (mean summaries) by HUC-8 units.

Results from the queries above will look like this:

{
  "1950_2009": {
    "DJF":{
      "CRU-TS40": {
        "CRU_historical": {
          "tas":{
            "hi_std": -16.7,
            "lo_std": -23.8,
            "max": -12.9,
            "mean": -20.3
            "median": -20.4,
            "min": -31.2,
            "q1": -22,
            "q3": -17.7
          }
        }
      }
    }
  } 
  ...
}
The above output is structured as such:
{
  <period>: {
    <season>:{
      <model>: {
        <scenario>: {
          <varname>: {
            <statistic>: <statistic value>
          }
        }
      }
    }
  } 
  ...
}
Note: only the CRU TS 4.0 data has statistics other than "mean", so AR5 data will end at <varname>: <mean value >


Dimensions:

  • period: Sumary period:
    • 1950_2009
    • 2040_2069
    • 2070_2099
    • 2010_2019
    • 2020_2029
    • 2030_2039
    • 2040_2049
    • 2050_2059
    • 2060_2069
    • 2070_2079
    • 2080_2089
    • 2090_2099
  • season: Summary season:
    • DJF
    • MMA
    • JJA
    • SON
  • model: AR5 model source, or CRU TS:
    • CCSM4
    • MRI-CGCM3
    • CRU-TS40
  • scenario: RCP scenario for AR5, or "CRU_historical" for CRU TS
    • rcp45
    • rcp60
    • rcp85
    • CRU_historical
  • statistic: Statistic value for CRU TS
    • hi_std: mean + standard deviation
    • lo_std: mean - standard deviation
    • max: maximum
    • q3: 3rd quartile
    • median
    • mean
    • q1: 1st quartile
    • min: minimum
Variables::
  • pr: (float), Precipitation value.
  • tas: (float), Temperature value.

Source data

Data Layer Download Link Data Source Data Notes
Historical Monthly and Derived Temperature Products - 2km CRU TS 4.0 http://data.snap.uaf.edu/data/Base/AK_CAN_2km/historical/CRU_TS/Historical_Monthly_and_Derived_Temperature_Products_2km_CRU_TS/ CRU TS 4.0 High-resolution gridded datasets (and derived products) Raster
Historical Monthly and Derived Precipitation Products - 2km CRU TS 4.0 http://data.snap.uaf.edu/data/Base/AK_CAN_2km/historical/CRU_TS/Historical_Monthly_and_Derived_Precipitation_Products_2km_CRU_TS/ CRU TS 4.0 High-resolution gridded datasets (and derived products) Raster
Projected Monthly and Derived Temperature Products - 2km CMIP5/AR5 http://data.snap.uaf.edu/data/Base/AK_CAN_2km/projected/AR5_CMIP5_models/Projected_Monthy_and_Derived_Temperature_Products_2km_CMIP5_AR5/ CMIP5 Raster
Projected Monthly and Derived Temperature Products - 2km CMIP5/AR5 http://data.snap.uaf.edu/data/Base/AK_CAN_2km/projected/AR5_CMIP5_models/Projected_Monthy_and_Derived_Precipitation_Products_2km_CMIP5_AR5/ CMIP5 Raster