基于微波散射计观测的气候态海面风场和风应力场

蒋兴伟; 宋清涛

基于微波散射计观测的气候态海面风场和风应力场

国家海洋局国家卫星海洋应用中心,北京 100081

基金项目: "HY-2"卫星型号预先研究项目;国家"八六三"重点项目(2007AA092201)"大洋渔场环境与鱼情信息应用技术系统开发";人力资源和社会保障部留学人员重点项目"海洋微波遥感数据在海气耦合中的应用"。

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出版历程
- 收稿日期: 2010-07-01
- 修回日期: 2010-10-20

A climatology of sea surface wind speed and wind stress fields constructed from scatterometer observations

National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China

摘要

摘要: 收集了星载微波散射计NSCAT,QuikSCAT和SeaWinds on ADOES-II的全球海面风速和方向L2B数据,数据涉及的时间序列长度为11.5 a。通过对所收集数据的质量控制、Loess低通空间滤波和统计处理,构建了气候态的逐月全球海面风场、风应力场和风应力旋度场(简称为SCAT),其空间网格间距为0.25°×0.25°。SCAT资料与其他有关资料相比,包含了更丰富的海面风场中小尺度空间变化的信息,可广泛应用于海洋、气候、海气相互作用等方面的研究,特别适合应用于海洋中小尺度过程的研究。作为我国"海洋二号"("HY-2")卫星预研项目的成果之一,SCAT资料将由国家海洋局国家卫星海洋应用中心提供给有关用户。
- 散射计 /
- 海面风场 /
- 海面风应力场 /
- 气候态资料
Abstract: A climatology of surface wind speed, wind stress and wind stress curl fields on a global 0.25°×0.25° grid (named SCAT) is constructed using 11.5 a surface wind observations from scatterometers NSCAT, QuikSCAT and SeaWinds on ADEOS-II. The L2B swath observations from each sensor were processed with quality control procedure, spatially low-pass filtered to remove spurious points, and then averaged as monthly fields.The SCAT is entirely based on satellite observations with the highest temporal and spatial sampling frequencies to date. The SCAT stress and stress curl fields reveal many mesoscale and small-scale features near the coastal regions of China that are of great importance to oceanography, climate studies, marine meteorology, fishery and ocean engineering. As a preliminary study of China’s ocean satellite mission "HY-2",The SCAT data can be obtained from the National Satellite Ocean Applications Service,the State Oceanic Administration.
- scatterometer /
- sea surface winds /
- wind stress /
- climatology

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