This symposium aims to bring together observational descriptions of the high latitude regions in the atmosphere, ocean and cryosphere from 200 years ago to the present. Topics from both polar regions as well as from in situ and space based observing platforms are the basis for this symposium. New observations collected via recent efforts, including the International Polar Year (IPY), International Trans-Antarctic Scientific Expedition (ITASE), and other ongoing long-term observational and paleo-climate efforts related to climate change at the poles, are solicited. In addition, presentations dealing with observational and data assimilation methods are welcome. Sample topic areas include ice core observations, mass balance investigations (surface, airborne or satellite based), satellite observations (e.g. altimetry, clouds, icebergs, etc.), ocean monitoring studies (e.g. ARGO, AON, etc.), polar surface observing networks (e.g. Automatic Weather Stations, ground-based GPS, etc.), and data syntheses from reanalysis.
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