气候变化领域集成服务门户(CCPortal): Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions

CCPortal

DOI	10.5194/tc-8-905-2014
	Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions - Part 1: Product description
	Brucker L.; Dinnat E.P.; Koenig L.S.
发表日期	2014
ISSN	19940416
卷号	8 期号:3
英文摘要	Passive and active observations at L band (frequency ~ 1.4 GHz) from the Aquarius/SAC-D mission offer new capabilities to study the polar regions. Due to the lack of polar-gridded products, however, applications over the cryosphere have been limited. We present three weekly polar-gridded products of Aquarius data to improve our understanding of L-band observations of ice sheets, sea ice, permafrost, and the polar oceans. Additionally, these products intend to facilitate access to L-band data, and can be used to assist in algorithm developments. Aquarius data at latitudes higher than 50° are averaged and gridded into weekly products of brightness temperature (TB), normalized radar cross section (NRCS), and sea surface salinity (SSS). Each grid cell also contains sea ice fraction, the standard deviation of TB, NRCS, and SSS, and the number of footprint observations collected during the seven-day cycle. The largest 3 dB footprint dimensions are 97 km × 156 km and 74 km × 122 km (along × across track) for the radiometers and scatterometer, respectively. The data is gridded to the Equal-Area Scalable Earth version 2.0 (EASE2.0) grid, with a grid cell resolution of 36 km. The data sets start in August 2011, with the first Aquarius observations and will be updated on a monthly basis following the release schedule of the Aquarius Level 2 data sets. The weekly gridded products are distributed by the US National Snow and Ice Data Center at http://nsidc.org/data/aquarius/index.html. © Author(s) 2014.
学科领域	cryosphere; data set; ice sheet; observational method; permafrost; polar region; radiometer; sea ice
语种	英语
scopus关键词	cryosphere; data set; ice sheet; observational method; permafrost; polar region; radiometer; sea ice
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/120110
作者单位	NASA, GSFC, Cryospheric Sciences Laboratory, Code 615, Greenbelt, MD 20771, United States; Universities Space Research Association, Goddard Earth Sciences Technology and Research Studies and Investigations, Columbia, MD 21044, United States; Chapman University, School of Earth and Environmental Sciences, Orange CA, 92866, United States
推荐引用方式 GB/T 7714	Brucker L.,Dinnat E.P.,Koenig L.S.. Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions - Part 1: Product description[J],2014,8(3).
APA	Brucker L.,Dinnat E.P.,&Koenig L.S..(2014).Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions - Part 1: Product description.Cryosphere,8(3).
MLA	Brucker L.,et al."Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions - Part 1: Product description".Cryosphere 8.3(2014).