DOI: 10.5194/tc-8-905-2014
Scopus记录号: 2-s2.0-84901276347
论文题名: Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions - Part 1: Product description
作者: Brucker L ; , Dinnat E ; P ; , Koenig L ; S
刊名: Cryosphere
ISSN: 19940416
出版年: 2014
卷: 8, 期: 3 起始页码: 905
结束页码: 913
语种: 英语
英文关键词: cryosphere
; data set
; ice sheet
; observational method
; permafrost
; polar region
; radiometer
; sea ice
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74847
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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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
Recommended Citation:
Brucker L,, Dinnat E,P,et al. Weekly gridded Aquarius L-band radiometer/scatterometer observations and salinity retrievals over the polar regions - Part 1: Product description[J]. Cryosphere,2014-01-01,8(3)