Axel Schweiger

Dr. Schweiger  is the current chair of PSC.  His research focuses on the interaction of sea ice with clouds and radiation.  He is using satellite data, models and in-situ observations to improve our understanding of sea ice and cloud variability.  He has developed the PSC Arctic Ice Volume Page .    He has been working to improve estimates of the surface radiation balance in the Arctic. To this end he has been developing and evaluating satellite-based algorithms. He has been assembling the TOVS Polar Pathfinder data set, a 20-year data set of polar temperature, humidity profiles and cloud information.  Previous research includes work on microwave-based sea ice concentration algorithms and the application of artificial intelligence methods to remote sensing problems. Dr. Schweiger has been with the Polar Science Center since 1992. 

In The News

Selected Projects

  • SP32-20110104-181906

    Response of Cloud Cover to Changes in Sea Ice

    Clouds play a major role in the arctic surface energy balance controlling the growth and melt of sea ice. At the same time the processes involved in the formation, maintenance and dissipation of cloud cover over the Arctic Ocean are thought to be strongly influenced by the sea ice itself. This project will advance the understanding of this interaction and feedback by asking: What is the response of Arctic clouds to diminishing sea ice?

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  • BPIOMASIceVolumeAnomalyCurrent

    Arctic Sea Ice Volume Anomaly

    The Arctic Sea Ice Volume Anomaly time series is calculated using the Pan-Arctic Ice Ocean Modeling and Assimilation System (PIOMAS) developed at APL/PSC.  Updates will be generated at approximately monthly intervals.

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  • arctic_sat

    Arctic Surface Air Temperatures for the Past 100 Years

    This project will produce authoritative SAT data sets covering the Arctic Ocean from 1901 to present, which will be used to better understand Arctic climate change.

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  • PathP

    TOVS Polar Pathfinder Path-P Project

    The purpose of this project is to improve satellite retrievals of atmospheric temperature, humidity and clouds.  Retrievals are based on   the physical-statistical retrieval method of Chedin et al. (1985, Improved Iteration Inversion Algorithm, 3I). The method has been improved for use in sea ice-covered areas (Francis 1994) and the data set has been designed to address the particular needs of the Polar research community. The data set represents the so called Path-P as designated by the TOVS Science Working Group.

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Selected Publications

ABOUT PSC

The Polar Science Center is a group of dedicated investigators conducting interdisciplinary research on the oceanography, climatology, meteorology, biology and ecology of the ice-covered regions on Earth and elsewhere in the solar system. Learn more »