海洋科学2016，Vol.40Issue(4)：108-115,8.DOI:10.11759/hykx20150508002
两种ASCAT散射计风产品的比较及评估
Comparison and evaluation between two versions of ASCAT scatterometer wind products
摘要
Abstract
Advanced SCATterometer (ASCAT) wind product data has been widely used in the observation of global sea surface wind fields. In this study, two ASCAT wind products one released by the NASA Jet Propulsion Labora-tory (JPL) and the other by Remote Sensing Systems (RSS) company are compared and analyzed on the basis of buoy data and Stepped-Frequency Microwave Radiometer (SFMR) data. A comparison between these two products shows good agreement at low to moderate wind speeds; however, there is an increase in the wind speed of RSS at speeds of higher than 15 m/s with increasing wind speeds, compared to the performance of JPL. A comparison of buoy data shows an almost identical accuracy for the two wind speed products when the wind speed is lower than 15 m/s. In addition, their RMS is consistent at higher wind speeds (>15 m/s), although JPL and RSS wind speeds are underestimated and overestimated, respectively. A comparison using SFMR data shows a better agreement for wind speed with RSS than JPL. The accuracy of the two wind direction products is low at wind speeds under 5 m/s; however, it improves and tends to be stable with increasing wind speed. These results provide important guidance for the selection of suitable ASCAT scatterometer wind products in associated research.关键词
ASCAT散射计/浮标/步进频率微波辐射计/评估Key words
Advanced SCATterometer (ASCAT)/buoy/Stepped-Frequency Microwave Radiometer (SFMR)/evaluation分类
海洋科学引用本文复制引用
汪栋,张杰,范陈清,孟俊敏..两种ASCAT散射计风产品的比较及评估[J].海洋科学,2016,40(4):108-115,8.基金项目
国家高技术研究发展计划(863计划)(SS2013AA091206, SQ2011GX06D05972) （863计划）
民用航天技术预先研究项目(2014090-090)[Foundation：National High-tech R&D Program (863 Program), No. SS2013AA091206, No. SQ2011GX06D05972 （2014090-090）
Civil Aerospace Technolo-gies Advance Research Project, No.2014090-090] （）
