Turmoil on the Tundra

An article in the Huffington Post describes some of the work that Ronald Daanen is doing on Frozen Debris Lobes in the Brooks Range of Alaska.

GOSAT CH4 and CO2, MODIS Evapotranspiration on the Northern Hemisphere June and July 2009, 2010 and 2011

GOSAT CH4 and CO2, MODIS Evapotranspiration on the Northern Hemisphere June and July 2009, 2010 and 2011. .

Abstract: The Greenhouse gases Observing Satellite (GOSAT) affords an ability to assess and monitor CH4 and CO2 near-surface atmospheric concentrations globally on monthly scales pertaining to biogeochemical cycles and anthropogenic emissions. In addition to GOSAT our investigation incorporates global-monthly estimates of evapotranspiration (ET) from the Moderate Resolution Spectroradiometer (MODIS) and fire/wildfire locations for correspondence and comparison. We restrict the investigation to the months of June and July in years 2009, 2010 and 2011.

Trumpet Curve Ice Sculpture

Ronnie Dannen and his wife Ina Timling are creating a ice sculpture of a trumpet curve as part of the World Ice Art Championships in Fairbanks, AK. Follow this link to track their progress via webcam.

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℃.

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