Quality assessment of spaceborne microwave radiometer Aquarius data product based on Argo buoy data

Wang Jin; Zhang Jie; Wang Jing

doi:10.3969/j.issn.0253-4193.2015.03.005

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Wang Jin, Zhang Jie, Wang Jing. Quality assessment of spaceborne microwave radiometer Aquarius data product based on Argo buoy data[J]. Haiyang Xuebao, 2015, 37(3): 46-53. doi: 10.3969/j.issn.0253-4193.2015.03.005

Citation:

Wang Jin, Zhang Jie, Wang Jing. Quality assessment of spaceborne microwave radiometer Aquarius data product based on Argo buoy data[J]. Haiyang Xuebao, 2015, 37(3): 46-53. doi: 10.3969/j.issn.0253-4193.2015.03.005

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Quality assessment of spaceborne microwave radiometer Aquarius data product based on Argo buoy data

doi: 10.3969/j.issn.0253-4193.2015.03.005

1.
College of Physics, Qingdao University, Qingdao 266071, China;College of Information Science and Engineering, Ocean University of China, Qingdao 266003, China
2.
The First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;
3.
College of Information Science and Engineering, Ocean University of China, Qingdao 266003, China

Received Date: 2013-12-20

Abstract

Abstract

Aquarius is a spaceborne L-band radiometer whose mission focuses on the measurement of sea surface salinity from space. Aquarius was successfully launched on June 2011 and has been working operationally for more than two years. This research shows the preliminary results of quality assessment of Aquarius salinity data product based on the Argo buoy data for 2012. The results reveal that the standard deviation of the error of the Aquarius L2 data is about 0.7,with a negative mean bias of -0.1. There is little difference between ascending and descending orbits data. The data quality degrades in coastal region because of the impact of land contamination and RFI. Because that the brightness temperature sensitivity is affected by the sea surface temperature,larger errors are observed in the region of low SST and higher latitude. The performance of sea surface emissivity model with wind-induced roughness in current salinity retrieval algorithm degrades under high wind speed,so large discrepancies are observed with the standard deviation of more than 1.
- sea surface salinity,
- L-band brightness temperature,
- spaceborne radiometer,
- Argo buoy

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References(23)

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