Sea Ice Detection Using GNSS‐R Data From TechDemoSat‐1

Autor:	Christopher J. Banks, Jessica Cartwright, Meric Srokosz
Rok vydání:	2019
Předmět:	geography Geophysics geography.geographical_feature_category Space and Planetary Science Geochemistry and Petrology GNSS applications Remote sensing (archaeology) Earth and Planetary Sciences (miscellaneous) Sea ice Oceanography Geology Remote sensing
Zdroj:	Journal of Geophysical Research: Oceans. 124:5801-5810
ISSN:	2169-9291 2169-9275
Popis:	A new method for the detection of sea ice using GNSS‐R (Global Navigation Satellite Systems Reflectometry) is presented and applied to 33 months of data from the U.K. TechDemoSat‐1 mission. This method of sea ice detection shows the potential for a future GNSS‐R polar mission, attaining an agreement of over 98% and 96% in the Antarctic and Arctic, respectively, when compared to the European Space Agency's Climate Change Initiative sea ice concentration product. The algorithm uses a combination of two parameters derived from the delay‐Doppler Maps to quantify the spread of power in delay and Doppler. Application of thresholds then allows sea ice to be distinguished from open water. Differences between the TechDemoSat‐1 sea ice detection and comparison data sets are explored. The results provide information on the seasonal and multiyear changes in sea ice distribution of the Arctic and Antarctic. Future potential and applications of this technique are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84c840e2d50e38816c57e09967b9217c https://doi.org/10.1029/2019jc015327 Zobrazit plný text záznamu Plný text