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Evaluation of high-resolution surface wind products at global and regional scales
Journal of Operational Oceanography ( IF 3.1 ) Pub Date : 2018-08-06 , DOI: 10.1080/1755876x.2009.12027738
A Bentamy 1 , D Croize-Fillon 1 , P Queffeulou 1 , C Liu 2 , H Roquet 3
Affiliation  

High resolution surface wind fields covering the global ocean, estimated from remotely sensed wind data and ECMWF wind analyses, have been available since 2005 with a spatial resolution of 0.25° in longitude and latitude, and a temporal resolution of 6h. Their quality is investigated through various comparisons with surface wind vectors from 190 buoys moored in various oceanic basins, from research vessels and from QuikSCAT scatterometer data taken during 2005–2006. The NCEP/NCAR and NCDC blended wind products are also considered. The comparisons performed during January-December 2005 show that speeds and directions compare well to in-situ observations, including from moored buoys and ships, as well as to the remotely sensed data. The root-mean-squared differences of the wind speed and direction for the new blended wind data are lower than 2m/s and 30°, respectively. These values are similar to those estimated in the comparisons of hourly buoy measurements and QuikSCAT near real time retrievals. At global scale, it is found that the new products compare well with the wind speed and wind vector components observed by QuikSCAT. No significant dependencies on the QuikSCAT wind speed or on the oceanic region considered are evident.



中文翻译:

在全球和区域范围内评估高分辨率地表风产品

根据遥感的风数据和ECMWF风分析估计,覆盖全球海洋的高分辨率地表风场自2005年以来已经可用,经度和纬度的空间分辨率为0.25°,时间分辨率为6h。通过与各种海洋盆地中停泊的190个浮标,研究船以及2005-2006年获得的QuikSCAT散射仪数据进行的各种比较,对它们的质量进行了调查。还考虑了NCEP / NCAR和NCDC混合风产品。2005年1月至12月进行的比较显示,速度和方向与原位比较好观测结果,包括来自系泊浮标和船只的观测数据以及对遥感数据的观测数据。新的混合风数据的风速和风向的均方根差分别小于2m / s和30°。这些值类似于每小时浮标测量值和QuikSCAT近实时取值比较中估计的值。在全球范围内,发现新产品与QuikSCAT观测到的风速和风矢量分量具有良好的比较。没有明显依赖于QuikSCAT风速或所考虑的海洋区域。

更新日期:2018-08-06
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