CAJ | 학술논문

基于南海北部 PY30-1平台上2012年2月至9月测风仪观测的风速数据,开展了 HY-2扫描辐射计风速数据比较研究。选取时空匹配窗口为5 min和25 km,利用HY-2扫描辐射计RM 100,70和35 km分辨率3种风速数据,分别与平台观测数据进行了比较。比较结果表明：在南海北部海域, HY-2扫描辐射计100 km分辨率风速和平台观测风速的均方根偏差为3.86 m/s；70 km分辨率风速和平台观测风速的均方根偏差为10.52 m/s；35 km分辨率风速和平台观测风速的均方根偏差为5.54 m/s。还进一步比较了有雨和无雨两种情况下HY-2扫描辐射计和平台数据的偏差,结果表明：有雨和无雨条件下都是100 km分辨率的数据偏差最小。这为在我国南海北部海域应用HY-2扫描辐射计的风速数据产品的选择提供了依据。
기우남해북부 PY30-1평태상2012년2월지9월측풍의관측적풍속수거,개전료 HY-2소묘복사계풍속수거비교연구。선취시공필배창구위5 min화25 km,이용HY-2소묘복사계RM 100,70화35 km분변솔3충풍속수거,분별여평태관측수거진행료비교。비교결과표명：재남해북부해역, HY-2소묘복사계100 km분변솔풍속화평태관측풍속적균방근편차위3.86 m/s；70 km분변솔풍속화평태관측풍속적균방근편차위10.52 m/s；35 km분변솔풍속화평태관측풍속적균방근편차위5.54 m/s。환진일보비교료유우화무우량충정황하HY-2소묘복사계화평태수거적편차,결과표명：유우화무우조건하도시100 km분변솔적수거편차최소。저위재아국남해북부해역응용HY-2소묘복사계적풍속수거산품적선택제공료의거。
We compared the wind data obtained by the Scanning Microwave Radiometer aboard on HY-2 Satellite with those obtained with the platform from February 2012 to Septemper 2012 in the Northern South China Sea. The temporal and spatial differences between the HY-2 and platform-measured data were limited to less than 5 min and 25 km. The spatial resolution of HY-2 data used in our study was 100, 70 and 35 km. The Root Mean Square (RMS) between HY-2 wind speed data with 100 km resolution and the platform-measured wind speed data was about 3.86 m/s. The RMS between HY-2 wind speed data with 70 km resolution and the platform-measured wind speed data was about 10.52 m/s. The RMS between HY-2 wind speed data with 35 km resolution and the platform-measured wind speed data was about 5.54 m/s. We also calculated the RMS between the HY-2 wind speed data and the platform-measured data under the conditions with rain or without rain. In conclusion, the HY-2 wind speed data with 100 km resolution is best under the condition without rain, and the HY-2 wind speed data with 35 km resolution is best under the condition with rain. We have provided a basis for using sea wind data of the Scanning Microwave Radiometer aboard on HY-2 Satellite in the Northern South China Sea.