MODIS-Derived Arctic Land-Surface Temperature Trends

MODIS-Derived Arctic Land-Surface Temperature Trends. .

Abstract: Across the Arctic changes in active layer, melting of glaciers and ground ice, thawing of permafrost and sequestration changes of carbon storage are driven in part by variations of land surface heat absorption, conduction and re-radiation relative to solar irradiance. We investigate Arctic land-surface temperature changes and regional variations derived by the MODIS sensors on NASA Aqua and Terra from March 2000 through July 2012. Over this decadal period we detect increase in the number of days with daytime land-surface temperature above 0℃.

The United States National Climate Assessment — Alaska Technical Regional Report now available

A new technical report for the Alaska region highlights results from the United States National Climate Assessment. GIPL members Vladimir Romanovsky, Guido Grosse, and Sergei Marchenko are contributing authors in this report, published as USGS Circular 1379.

Cover of USGS 1379

First issue of "Changing Ice" published: A newsletter of Cryosphere Research in Alaska

The first newsletter "Changing Ice" targeting Cryosphere research in Alaska has been published and features several research examples from the GI Permafrost Lab. With this newsletter projects and discoveries led by Alaskan Cryosphere scientists are highlighted with the hope to create a tool that allows efficient communication between scientists and stakeholders.

Leaking lakes featured in NASA Publication: Sensing our Planet

Work on thermokarst lakes by Guido Grosse and colleagues Katey Walter Anthony and Melanie Engram is being featured in NASA's annual outreach publication "Sensing our Planet", which highlights current NASA Earth Science Research. The article "Leaking Lakes" was published in November 2012 and can be found here.

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