CAJ | 학술논문

为了弥补中国近海海区缺乏洋面风场观测资料，提高海洋气象预报能力，对 MetOP-A极轨卫星搭载的ASCAT 散射计反演风场资料和中国气象局在近海布设的18个浮标站测风资料进行对比。结果表明，离岸较远的海域中ASCAT 反演风场的质量要优于离岸较近的海域，在较远的海域中，ASCAT风速和浮标观测风速的平均偏差为0．9 m · s-1，ASCAT 的风速高于浮标站的风速，平均绝对偏差和均方根误差分别为1．2和1．4 m·s-1，风速的相关系数为0．94。统计特征分析结果显示，ASCAT散射计风场资料在中国近海有较好的可信度，在高风速的时候，ASCAT 和浮标资料一致性较好，而低风速时候， ASCAT比浮标略偏大。目前，中央气象台正在逐步开展ASCAT资料的业务应用，ASCAT洋面的 MICAPS格式产品和图形产品现已实现准实时运行。
위료미보중국근해해구결핍양면풍장관측자료，제고해양기상예보능력，대 MetOP-A겁궤위성탑재적ASCAT 산사계반연풍장자료화중국기상국재근해포설적18개부표참측풍자료진행대비。결과표명，리안교원적해역중ASCAT 반연풍장적질량요우우리안교근적해역，재교원적해역중，ASCAT풍속화부표관측풍속적평균편차위0．9 m · s-1，ASCAT 적풍속고우부표참적풍속，평균절대편차화균방근오차분별위1．2화1．4 m·s-1，풍속적상관계수위0．94。통계특정분석결과현시，ASCAT산사계풍장자료재중국근해유교호적가신도，재고풍속적시후，ASCAT 화부표자료일치성교호，이저풍속시후， ASCAT비부표략편대。목전，중앙기상태정재축보개전ASCAT자료적업무응용，ASCAT양면적 MICAPS격식산품화도형산품현이실현준실시운행。
The new scatterometer Advanced SCATterometer (ASCAT )onboard MetOP-A satellite pro-vides surface wind speed and direction over global oceans with a spatial resolution of 25 km and 12.5 km square over two swaths.The accuracy of ASCAT retrieved wind is determined through various speed and direction comparisons with moored buoys laid by China Meteorological Administration (CMA).The wind speed bias between ASCAT and buoys is 0.9 m·s-1 .The average absolute error and root-mean-squared difference are 1 .2 m · s-1 and 1 .4 m · s-1 ,respectively.The ASCAT wind over China offshore sea is credible with the correlation coefficient of wind speed between ASCAT and buoys is 0.94.And the primary operational application of ASCAT winds is on processing gradually in National Meteorological Centre (NMC),which can provide text data and PNG figures quasi real time.