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Quality assessment of HY-2A altimeter data through tide gauge comparisons
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Kaixin Hou1, Shengjun Zhang1, *, Xiangxue Kong2
Haiyang Xuebao | 2019, 41(7) : 136 - 142
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Haiyang Xuebao | 2019, 41(7): 136-142
• Marine Information Science •
Quality assessment of HY-2A altimeter data through tide gauge comparisons
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Kaixin Hou1, Shengjun Zhang1, *, Xiangxue Kong2
Affiliations
  • 1 College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
  • 2 Liaoning Earthquake Agency, Shenyang 110031, China
Published: 2019-07-25 doi: 10.3969/j.issn.0253-4193.2019.07.012
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The tide gauge data provide an effective way to evaluate the accuracy of satellite altimeter data. The HY-2A data are filtered based on the data edited criterion and the model of real-time atmospheric pressure provided by NCEP are used to solve the problem caused by the unavailable dry tropospheric correction and inverse barometer correction in the later stage of the HY-2A exact repeat mission (ERM). By matching the HY-2A altimeter data and the tide gauges data in temporal and spatial, the correlation coefficient and standard deviation between the two kinds of altimeter data are calculated in the nine selected tide gauges area. According to the analysis results, the average correlation coefficient is about 0.676 9, the optimum is up to 0.898 7, and the average standard deviation is 0.089 5 m. The results show that the quality of HY-2A satellite altimetry data meet the design target and achieve the expected level. It provides a new reliable data source for the application research of the marine gravity field inversion.

HY-2A  /  satellite altimetry  /  tide gauges  /  quality assessment
Kaixin Hou, Shengjun Zhang, Xiangxue Kong. Quality assessment of HY-2A altimeter data through tide gauge comparisons[J]. Haiyang Xuebao, 2019 , 41 (7) : 136 -142 . DOI: 10.3969/j.issn.0253-4193.2019.07.012
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Article Info
doi: 10.3969/j.issn.0253-4193.2019.07.012
  • Receive Date：2018-08-02
  • Online Date：2026-04-02
  • Published：2019-07-25
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  • Received：2018-08-02
  • Revised：2018-12-10
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Affiliations
    1 College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
    2 Liaoning Earthquake Agency, Shenyang 110031, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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