Faculty of Engineering and Natural Sciences
Sea Ice in Climate Change from Various Satellite Imageries
Remote Sensing and Geoinformatics Lab, Department of Geological Sciences
Email: email@example.com, Website: http://www.utsa.edu/LRSG/
Sea ice is an important component of the Earth system that affects local- and global-scale climate and environmental systems. Sea ice regulates heat, moisture, and salinity exchanges between the polar oceans and the atmosphere, which could affect local cloud cover and precipitation. Ice thickness, its spatial extent, and the fraction of open water within the ice pack can vary rapidly and profoundly in response to changes in weather and climate. Antarctic sea ice cover has shown a slight increase (<1%/decade) in overall observed ice extent as derived from satellite mapping from 1979 to 2008, contrary to the decline observed in the Arctic regions. Spatial and temporal variations of the Antarctic sea ice however remain a significant problem to monitor and understand, primarily due to the vastness and remoteness of the region. While satellite remote sensing has provided and has great future potential to monitor the variations and changes of sea ice, uncertainties remain unresolved.
Both passive and active microwave remote sensing have provided useful information about changes in sea ice in both
Polar Regions over the last 30 years. For Antarctic sea ice, however, computational algorithms deriving sea ice properties from satellite data are still in a developmental stage and data validation is in progress. This presentation will focus on baseline properties of the Antarctic sea ice through field measurements with joint remote sensing analysis (ICESat, RADARSAT, ENVISAT, and AMSR-E with the support of NASA, ESA, and other agencies).
Additionally, presenter will give information about the Antarctic Expedition that she participated in December 2006. The expedition is called the ODEN expedition and the purpose of the expedition was to break and maintain a channel through the sea ice of
McMurdo Sound to allow the annual supply and fuel ships to reach McMurdo. This voyage was sponsored by U.S. National Science Foundation as one of the first collaborative activities of the International Polar Year (IPY) 2007-2008. During the expedition, an international team of scientists conducted different science activities. Presenter who also systematically collected observational data on sea ice morphology and distribution as the Polar Icebreaker ODEN transited through the Bellingshausen, Amundsen and Ross seas in Antarctic summer season (December 2006). The data collected included ice concentration, ice type, ice thickness, floe size, topography, and snow cover (snow type and thickness). Ship observations from the ODEN expedition in December 2006 are used as ground truth to verify the two satellite products (National Ice Center (NIC) ice edge and the AMSR-E (Advanced Microwave Scanning Radiometer - Earth Observing System)) during Antarctic summer will be presented.
Burcu Ozsoy-Cicek is a native of
Turkey, graduated from
University with degrees of Bachelor and Master in Geodesy-Photogrammetry Engineering. In 2001 she started serving as Research Assistant (RA) in
University. In 2003 Ms. Ozsoy-Cicek joined to Remote Sensing and Geoinformatics Lab, Department of Geological Sciences at
Texas at San Antonio (UTSA) to study Ph.D. In 2006, she participated to Antarctic expedition to collect in-situ data for the validation of NASA passive microwave satellite products on sea ice properties. Also the same year, she participated to ICESat group at NASA Goddard,
USA to study sea ice thickness satellite product (ICESat). In 2007, she established American Society of Photogrammetry and Remote Sensing (ASPRS) chapter in UTSA. She is currently working under NASA project to validate laser-satellite (ICESAT) product with in-situ measurements collected sea ice profiles ( sea ice elevation and sea ice thickness) during the last 20 years. She recently got acceptance of her proposal to International Space Science Institute (ISSI) to provide young scientists (PhD candidates and PostDocs) with the opportunity to work closely with experts/senior scientists on their own specific science problems. The workshop on “Monitoring Arctic and Antarctic Sea Ice from Various Satellite Products” in Bern, Switzerland at International Space Science Institute (ISSI) will give better perspective to young scientists in understanding a variety of fields and satellite products related to sea ice. Ms. Ozsoy-Cicek will lead/organize the workshop early next year.
July 10, 2009, 10:40, FENS L055