Uncertainty reduction of Arctic sea ice freeboard from CryoSat-2 interferometric mode
نویسندگان
چکیده
منابع مشابه
CryoSat-2 estimates of Arctic sea ice thickness and volume
[1] Satellite records show a decline in ice extent over more than three decades, with a record minimum in September 2012. Results from the Pan-Arctic Ice-Ocean Modelling and Assimilation system (PIOMAS) suggest that the decline in extent has been accompanied by a decline in volume, but this has not been confirmed by data. Using new data from the European Space Agency CryoSat-2 (CS-2) mission, v...
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Satellite altimeters have been used to monitor Arctic sea ice thickness since the early 2000s. In order to estimate sea ice thickness from satellite altimeter data, leads (i.e., cracks between ice floes) should first be identified for the calculation of sea ice freeboard. In this study, we proposed novel approaches for lead detection using two machine learning algorithms: decision trees and ran...
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[1] Total freeboard (snow and ice) of the Arctic Ocean sea ice cover is derived using Ice, Cloud, and land Elevation Satellite (ICESat) data from two 35-day periods: one during the fall (October November) of 2005 and the other during the winter (February March) of 2006. Three approaches are used to identify near-sea-surface tiepoints. Thin ice or open water samples in new openings, typically wi...
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250 words) 25 Uncertainty in the Pan-arctic Ice Ocean Modeling and Assimilation System (PIOMAS) 26 Arctic sea ice volume record is characterized. A range of observations and approaches, 27 including in-situ ice thickness measurements, ICESat retrieved ice thickness, and model 28 sensitivity studies, yields a conservative estimate for October Arctic ice volume 29 uncertainty of +/1.35x10 km and ...
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[1] The extent of Arctic perennial sea ice, the year-round ice cover, was significantly reduced between March 2005 and March 2007 by 1.08 10 km, a 23% loss from 4.69 10 km to 3.61 10 km, as observed by the QuikSCAT/SeaWinds satellite scatterometer (QSCAT). Moreover, the buoy-based Drift-Age Model (DM) provided long-term trends in Arctic sea-ice age since the 1950s. Perennial-ice extent loss in ...
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ژورنال
عنوان ژورنال: Advances in Space Research
سال: 2018
ISSN: 0273-1177
DOI: 10.1016/j.asr.2018.03.018