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Mapping land resources

3503.1 - Sensitivity analysis of ice production model in Ross Ice Shelf Polynya

Monday, July 3
1:30 PM - 1:50 PM
Location: Virginia A

Antarctic sea ice formation is strongly influenced by polynyas occur in austral winter. The Ross Ice Shelf Polynya (RISP) has the highest sea ice production in the Southern Ocean. We calculated sea ice production of RISP from 2003 to 2015 by a thermodynamical model based on sea ice concentration derived from AMSRE, SSMIS and AMSR2, and ERA-Interim meteorological data. We further studied annual, seasonal and spatial variability and trends of RISP sea ice production, and tested the sensitivity of model parameters. The result of ice production model is sensitive to parameter variation. The value of the parameters such as the latent heat of sea ice fusion and the bulk transfer coefficients have a great impact on the results of the model. When different parameter value are chosen, the ice production results vary as much as 46%. The results show that during the past 13 years, annual sea ice production of RISP ranges from 412 to 666 km3/a, with an average of 507 km3/a. Annual RISP ice productions show no obvious trend, but the ice production map shows different trend in different area. Decrease in ice production occurs along coastline, a small long area near ice sheet and fast ice. Whereas significant increase occurs in most of other areas of RISP.

Xi Zhao

Associate Prof.
Wuhan University

Xi Zhao is currently an associate Professor of Geo-Information Science at the Wuhan University, China. She received the Ph.D. degree in earth observation science from the Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, The Netherlands. Her research interest includes uncertainty modeling, data quality analysis of remote sensing images, random sets, sea ice remote sensing. She acts as the guest editor for a special issue in Spatial Statistics, and gave a keynote speak in the Spatial Statistics conference in 2014, France. She has been a session chair for the ICC conference 2013, Germany.

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Xiaoping Pang

Wuhan University

Prof in the cartography field

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Zian Cheng

Wuhan University

PhD student

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Cheng Tan

Wuhan University

PhD student

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Patrick Kennelly

Professor
LIU Post

Patrick Kennelly is a Professor of Geography at Long Island University in New York, USA. He is also a Visiting Professor in the Penn State online Masters of GIS program. He has published a number of articles on terrain representation, and has special interest in advanced methods for relief shading.

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