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

Alaska + Arctic Geospatial Data API

Built by the Scenarios Network for Alaska + Arctic Planning

Snowfall Equivalent

This endpoint accesses historical and projected modeled decadal summaries of annual snowfall equivalent (SFE) for Alaska. Note that SFE has a very specific meaning in a modeling context: it is the product of the fraction of days in a month with precipitation falling as snow and the total monthly precipitation. That product (monthly) is then summed to create a single annual total SFE value. The SFE values provided here are millimeters of water.

Summary queries for SFE

Query the historical SFE min, mean, and max:

Example: /mmm/snow/snowfallequivalent/historical/61.5/-147

Query the projected SFE min, mean, and max:

Example: /mmm/snow/snowfallequivalent/projected/61.5/-147

Query both the historical and projected SFE min, mean, and max:

Example: /mmm/snow/snowfallequivalent/hp/61.5/-147

Results from the queries above will look like this:
{
  "historical": {
    "sfemax": 4876,
    "sfemean": 3701,
    "sfemin": 2946
  }
  ...
}
The above output is structured like this:
{
  <summary time period type, "historical" or "projected">: {
    "sfemax": <max SFE value across all models, scenarios, and decades>,
    "sfemean": <mean SFE value across all models, scenarios, and decades>,
    "sfemin": <min SFE value across all models, scenarios, and decades>
  }
  ...
}

Comprehensive queries for SFE

Query both the historical and projected SFE values for all models, scenarios, and decades (1910-1919 through 2090-2099):

Example: /mmm/snow/snowfallequivalent/all/61.5/-147

Results from the query above will look like this:
{
    "CRU-TS": {
    "historical": {
        "1910-1919": {
        "SFE": 3801,
        }
        ...
    }
    ...
    }
    ...
}
The above output is structured like this:
{
    <model>: {
    <scenario>:{
        <decade>: {
        "SFE": <annual total sfe value>,
        }
        ...
    }
    ...
    }
    ...
}

CSV Export

To export the point data in a CSV file, append ?format=csv. Currently only available for the "all" data option.

Example: /mmm/snow/snowfallequivalent/all/61.5/-147?format=csv