Calibration of HY-2A satellite significant wave heights with <i>in situ</i> observation

PENG Hailong; LIN Mingsen

doi:10.1007/s13131-015-0758-9

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PENG Hailong, LIN Mingsen. Calibration of HY-2A satellite significant wave heights with in situ observation[J]. Acta Oceanologica Sinica, 2016, 35(3): 79-83. doi: 10.1007/s13131-015-0758-9

Citation:

PENG Hailong, LIN Mingsen. Calibration of HY-2A satellite significant wave heights with in situ observation[J]. Acta Oceanologica Sinica, 2016, 35(3): 79-83. doi: 10.1007/s13131-015-0758-9

PENG Hailong, LIN Mingsen. Calibration of HY-2A satellite significant wave heights with in situ observation[J]. Acta Oceanologica Sinica, 2016, 35(3): 79-83. doi: 10.1007/s13131-015-0758-9

Citation:

PENG Hailong, LIN Mingsen. Calibration of HY-2A satellite significant wave heights with in situ observation[J]. Acta Oceanologica Sinica, 2016, 35(3): 79-83. doi: 10.1007/s13131-015-0758-9

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Calibration of HY-2A satellite significant wave heights with in situ observation

doi: 10.1007/s13131-015-0758-9

PENG Hailong^1
,,
LIN Mingsen²

1.
College of Information Science and Engineering, Ocean University of China, Qingdao 266100, China;Nation Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China
2.
Nation Satellite Ocean Application Service, State Oceanic Administration, Beijing 100081, China;Key Laboratory of Space Ocean Remote Sensing and Application, State Oceanic Administration, Beijing 100081, China

Received Date: 2015-06-03
Rev Recd Date: 2015-08-20

Abstract

Abstract

Significant wave height (SWH) can be computed from the returning waveform of radar altimeter, this parameter is only raw estimates if it does not calibrate. But accurate calibration is important for all applications, especially for climate studies. HY-2a altimeter has been operational since April 2012 and its products are available to the scientific community. In this work, SWH data from HY-2A altimeters are calibrated against in situ buoy data from the National Data Buoy Center (NDBC), Distinguished from previous calibration studies which generally regarded buoy data as "truth", the work of calibration for HY-2A altimeter wave data against in situ buoys was applied a more sophisticated statistical technique-the total least squares (TLS) method which can take into account errors in both variables. We present calibration results for HY-2A radar altimeter measurement of wave height against NDBC buoys. In addition, cross-calibration for HY-2A and Jason -2 wave data are talked over and the result is given.
- total least squares,
- NDBC buoys,
- HY-2A altimeter,
- significant wave height

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References(16)

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