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Woods Hole Oceanographic Institution

Sarah B. Das

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Publications
»Antarctic meltwater flux, GRL, 2013
»Tropical Pacific influence on W. Antarctic marine aerosols, J. Climate, 2013
»Thwaites Glacier, Antarctica accumulation, GRL, 2013
»ACCMIP multi-model global nitrogen and sulfur deposition dataset, ACP, 2013
»Influence of ice sheet geometry and supraglacial lakes on seasonal ice flow, TC, 2013
»Greenland Iron Export, Nature Geosc, 2013
»Greenland Organic Carbon Export, GCA, 2013
»Amundsen Coast Sea Ice and Polynya Variability, JGR, 2013
»Ice Core 10Be Records, EPSL, 2012
»Antarctic Ice Sheet Surface Melting, JGR, 2012
»Greenland discharge isotope mixing model, J. Glac., 2011
»Future Science Opportunities in Antarctica and the Southern Ocean, NRC Report, 2011
»Greenland Ice Sheet DOM, GCA, 2010
»Ice Sheet Hydrofracture and Water-transport Model, GRL, 2009
»Greenland Supraglacial Lake Drainage, Science, 2008
»Greenland Seasonal Speedup, Science, 2008
»West Antarctica Holocene Climate, JGR, 2008
»Greenland Accumulation, J. Climate, 2006
»Melt Layer Formation, J. Glac, 2005
»Whillans Ice Stream Deceleration, GRL, 2005
»Siple Dome Temperature Variability, Annals Glac., 2002
»Patagonian Icefield SAR, JGR, 1996


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Das, S. B., R. B. Alley, D. B. Reusch, and C. A. Shuman, Temperature variability at Siple Dome, West Antarctica, derived from SSM/I and SMMR brightness temperatures, ECMWF re-analyses and AWS records, Annals of Glaciology, v 34, 106-112, 2002

We produced four independent temperature time-series derived from different sensors for the Siple Dome region of West Antarctica to investigate seasonal to inter-annual temperature variability over the last 20 years. We use data from Automatic Weather Station (AWS) air temperature records (1997-1999), European Centre for Medium-Range Weather Forecasts (ECMWF) surface temperature from the 15-year re-analyses (ERA-15, 1979-1993), and emissivity-corrected brightness temperatures from the Special Sensor Microwave/ Imager (SSM/I) (1987-1999) and the Scanning Multichannel Microwave Radiometer (SMMR) (1978-1987). Each technique has limitations and errors, but all respond to temperature, and all agree in the large patterns of temperature variability over time. Our results show that there is high seasonal to inter-annual variability in both mean temperature and variance in the Siple Dome region during the study period. In particular, fluctuations in seasonal to inter-annual temperature variance occur on an approximately five year cycle and correlate with variations in the Southern Oscillation Index.

FILE » Dasetal2002



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