EPSCoR - Alaska Adapting to Changing Environments

EPSCoR - Alaska Adapting to Changing Environments

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Climate Drivers of Alaska Stream Temperatures

The water temperature in lakes, rivers and streams has significant impacts on water quality, fish habitats, and local economies and is linked to regional/large-scale climate variability. This project analyzed Jun-Aug average water temperatures at seven rivers/streams situated along the southern coast of Alaska and one in arctic Alaska. These sites were selected primarily due to data availability (decades of data are needed for climate-scale analysis). The summer season was selected because potential temperature-related tipping points for the aquatic ecosystem occur in the warm season and mechanisms of summer climate variability in Alaska are generally the least understood of any season. Analysis showed that all streams tend to have warmer temperatures when local near-surface temperatures were warmer than average. Reduced cloud cover under persistent high pressure aloft generally was the catalyst for warmer temperatures. A potential link between sea surface temperatures, the Pacific Decadal Oscillation and stream temperatures was identified but a conclusive physical mechanism linking the two could not be established. The summer atmospheric circulation around Alaska generally lacks the active storm tracks/clear centers of action of the cold season and further study will be needed to explain the linkage between the broader climate and stream temperature variability.

Temperature data was collected for 8 different sites (7 stream/rivers, and 1 lake) and is available for download.

Data and Resources

  • Download
    Download

    bieniek_june_july_august_average_temp.csv (2.1 KB)

  • Download
    Download

    bieniek_river_avg_Terror.csv (706 Bytes)

  • Download
    Download

    bieniek_locations.csv (1.04 KB)

  • Download
    Download

    bieniek_agu2016.pdf (9.22 MB)

Status: Complete
Type: Data
Data Types: Database
Primary Agency
EPSCoR - Alaska Adapting to Changing Environments
Type
Academic

Funding Agency
EPSCoR - Alaska Adapting to Changing Environments
Type
Academic

Other Agencies
National Science Foundation

ISO Topics
climatologyMeteorologyAtmosphere, inlandWaters

Geo-keywords
Alaska

Direct Record Link
http://epscor.portal.gina.alaska.edu/catalogs/11842-climate-drivers-of-alaska-stream-temperatures
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2017-03-14 15:01:58 -0800
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    Updated by Lisa
    2017-03-14 14:59:55 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Published by Lisa
    2017-03-14 14:57:48 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2017-03-14 14:57:26 -0800
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    Updated by Lisa
    2017-03-14 14:54:57 -0800
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    Updated by Lisa
    2017-03-14 14:52:53 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2017-03-14 14:50:06 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    New record created
    2017-03-14 14:48:35 -0800
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