气候变化领域集成服务门户(CCPortal): Utilisation of Cryosat-2 SAR altimeter in operational ice charting

CCPortal

DOI	10.5194/tc-10-121-2016
	Utilisation of Cryosat-2 SAR altimeter in operational ice charting
	Rinne E.; Similä M.
发表日期	2016
ISSN	19940416
卷号	10 期号:1
英文摘要	We present methods to utilise CryoSat-2 (CS-2) synthetic aperture radar (SAR) mode data in operational ice charting. We compare CS-2 data qualitatively to SAR mosaics over the Barents and Kara seas. Furthermore, we compare the CS-2 to archived operational ice charts. We present distributions of four CS-2 waveform parameters for different ice types as presented in the ice charts. We go on to present an automatic classification method for CS-2 data which, after training with operational ice charts, is capable of determining open ocean from ice with a hit rate of > 90 %. The training data are dynamically updated every 5 days using the most recent 15 days of CS-2 data and operative ice charts. This helps the adaption of the classifier to the evolving ice/snow conditions throughout winter. The classifier is also capable of detecting three different ice classes (thin and thick first-year ice as well as old ice) with success rates good enough for the output to be usable to support operational ice charting. Finally, we present a near-real-time CS-2 product just plotting the waveform characteristics and conclude that even such a simple product is usable for some of the needs of ice charting. © Author(s) 2016.
学科领域	altimeter; classification; CryoSat; ice cover; open ocean; real time; sea ice; synthetic aperture radar; waveform analysis; Arctic Ocean; Barents Sea; Kara Sea
语种	英语
scopus关键词	altimeter; classification; CryoSat; ice cover; open ocean; real time; sea ice; synthetic aperture radar; waveform analysis; Arctic Ocean; Barents Sea; Kara Sea
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119728
作者单位	Finnish Meteorological Institute, Marine Research, P.O. Box 503, Helsinki, 00101, Finland
推荐引用方式 GB/T 7714	Rinne E.,Similä M.. Utilisation of Cryosat-2 SAR altimeter in operational ice charting[J],2016,10(1).
APA	Rinne E.,&Similä M..(2016).Utilisation of Cryosat-2 SAR altimeter in operational ice charting.Cryosphere,10(1).
MLA	Rinne E.,et al."Utilisation of Cryosat-2 SAR altimeter in operational ice charting".Cryosphere 10.1(2016).