The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data

WANG Jichao ZHANG Jie YANG Jungang

WANGJichao, ZHANGJie, YANGJungang. The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data[J]. 海洋学报英文版, 2013, 32(11): 87-90. doi: 10.1007/s13131-013-0382-5
引用本文: WANGJichao, ZHANGJie, YANGJungang. The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data[J]. 海洋学报英文版, 2013, 32(11): 87-90. doi: 10.1007/s13131-013-0382-5
WANG Jichao, ZHANG Jie, YANG Jungang. The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data[J]. Acta Oceanologica Sinica, 2013, 32(11): 87-90. doi: 10.1007/s13131-013-0382-5
Citation: WANG Jichao, ZHANG Jie, YANG Jungang. The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data[J]. Acta Oceanologica Sinica, 2013, 32(11): 87-90. doi: 10.1007/s13131-013-0382-5

The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data

doi: 10.1007/s13131-013-0382-5
基金项目: The Special Funds of State Oceanic Administration for Marine Commonweal Research under contract Nos 201105032-1 and 201305032;the Special Project of State Oceanic Administration of Poles Environmental Investigation and Assessment under contract No. CHINARE2012-02-04;the European Space Agency (ESA)-Minister of Science and Technology of the Peoples Republic of China (MOST) Dragon 3 Cooperation Programme under contract No. 10466.

The validation of HY-2 altimetermeasurements of a significant wave height based on buoy data

  • 摘要: HY-2 has been launched by China on August 16, 2011 which assembles multi-microwave remote sensing payloads in a body and has the ability of monitoring ocean dynamic environments. The HY-2 satellite data need to be calibrated and validated before being put into use. Based on the in-situ buoys fromthe National Data Buoy Center (NDBC), Ku-band significant wave heights (SWH, hs) of HY-2 altimeter are validated. Eleven months of HY-2 altimeter Level 2 products data are chose from October 1, 2011 to August 29, 2012. Using NDBC 60 buoys yield 902 collocations for HY-2 by adopting collocation criteria of 30 min for temporal window and 50 km for a spatial window. An overall RMS difference of the SWH between HY-2 and buoy data is 0.297 m. A correlation coefficient between these is 0.964. An ordinary least squares (OLS) regression is performed with the buoy data as an independent variable and the altimeter data as a dependent variable. The regression equation of hs is hs(HY-2)=0.891×hs (NDBC)+0.022. In addition, 2016 collocations are matched with temporal window of 30min at the crossing points of HY-2 and Jason-2 orbits. RMS difference of Ku-band SWH between the two data sets is 0.452 m.
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出版历程
  • 收稿日期:  2012-12-10
  • 修回日期:  2013-03-04

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