Quick Search:       Advanced Search
WANG He,ZHU Jianhua,LIN Mingsen,HUANG Xiaoqi,ZHAO Yili,CHEN Chuntao,ZHANG Youguang,PENG Hailong. 2013. First six months quality assessment of HY-2A SCAT wind products using in situ measurements. Acta Oceanologica Sinica, 32(11):27-33
First six months quality assessment of HY-2A SCAT wind products using in situ measurements
First six months quality assessment of HY-2A SCAT wind products using in situ measurements
Received:August 24, 2012  Revised:December 10, 2012
DOI:10.1007/s13131-013-0374-5
Key words:HY-2A satellite  microwave scatterometer  wind  validation
中文关键词:  HY-2A satellite  microwave scatterometer  wind  validation
基金项目:The Marine Public Welfare Project of China under contract No. 201105032;the National High-Tech Project of China under contract No. 2008AA09A403;and the fund of State Administration for Science, Technology and Industry for National Defense.
Author NameAffiliationE-mail
WANG He National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China  
ZHU Jianhua National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China besmile@6.net 
LIN Mingsen National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China  
HUANG Xiaoqi National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China  
ZHAO Yili National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China  
CHEN Chuntao National Ocean Technology Center, State Oceanic Administration, Tianjin 300112, China  
ZHANG Youguang National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China  
PENG Hailong National Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China  
Hits: 2164
Download times: 4037
Abstract:
      The first Chinese microwave ocean environment satellite HY-2A, carrying a Ku-band scatteromenter (SCAT), was successfully launched in August 2011. The first quality assessment of HY-2A SCAT wind products is presented through the comparison of the first 6 months operationally released SCAT products with in situ data. The in situ winds fromtheNationalData Buoy Center (NDBC) buoys, R/V Polarstern, Aurora Australis, Roger Revelle and PY30-1 oil platform, were converted to the 10 m equivalent neutral winds. The temporal and spatial differences between the HY-2A SCAT and the in situ observations were limited to less than 5 min and 12.5 km. For HY-2A SCAT wind speed products, the comparison and analysis using the NDBC buoys yield a bias of -0.49 m/s, a root mean square error (RMSE) of 1.3 m/s and an increase negative bias with increasing wind speed observation above 3m/s. Although less accurate of HY-2A SCAT wind direction at low winds, the RMSE of 19.19° with a bias of 0.92° is found for wind speeds higher than 3 m/s. These results are found consistent with those fromR/Vs and oil platformcomparisons. Moreover, the NDBC buoy comparison results also suggest that the accuracy of HY-2A SCAT winds is consistent over the first half year of 2012. The encouraging assessment results over the first 6 months show that wind products from HY-2A SCAT will be useful for scientific community.
中文摘要:
      The first Chinese microwave ocean environment satellite HY-2A, carrying a Ku-band scatteromenter (SCAT), was successfully launched in August 2011. The first quality assessment of HY-2A SCAT wind products is presented through the comparison of the first 6 months operationally released SCAT products with in situ data. The in situ winds fromtheNationalData Buoy Center (NDBC) buoys, R/V Polarstern, Aurora Australis, Roger Revelle and PY30-1 oil platform, were converted to the 10 m equivalent neutral winds. The temporal and spatial differences between the HY-2A SCAT and the in situ observations were limited to less than 5 min and 12.5 km. For HY-2A SCAT wind speed products, the comparison and analysis using the NDBC buoys yield a bias of -0.49 m/s, a root mean square error (RMSE) of 1.3 m/s and an increase negative bias with increasing wind speed observation above 3m/s. Although less accurate of HY-2A SCAT wind direction at low winds, the RMSE of 19.19° with a bias of 0.92° is found for wind speeds higher than 3 m/s. These results are found consistent with those fromR/Vs and oil platformcomparisons. Moreover, the NDBC buoy comparison results also suggest that the accuracy of HY-2A SCAT winds is consistent over the first half year of 2012. The encouraging assessment results over the first 6 months show that wind products from HY-2A SCAT will be useful for scientific community.
HTML View Full Text   View/Add Comment  Download reader
Close