光子学报, 2018, 47 (11): 1101001, 网络出版: 2018-12-17
南海北部区域海洋水体皮温-体温模型研究
Study on Model of the Sea Surface Skin Temperature and Bulk Sea Surface Temperature in Northern Region of South China Sea
海洋表面温度 海洋特征检测 红外辐射 光学检测 数学模型 Sea surface temperature Oceanic feature detection Infrared radiation Optical detection Mathematical model
摘要
针对我国海洋遥感定标检验技术, 提出海洋水体皮温-体温模型, 将海洋皮温测量精度提高至0.3℃.模型皮温数据来源于自主研制架设在南海北部PY-301石油平台上的无人值守自动多波段红外辐射系统, 通过标准黑体标定、光阑校正、天空光校正, 使海水皮温测量精度优于±0.5℃.基于模型分析了风速对海洋皮温和体温差值的影响, 并用所提模型与Donlon模型对海洋皮温测量值进行风速修正, 修正后两者偏差分别为-0.007 6±0.297 1℃和0.044 6±0.324 8℃.结果证明该模型有效且能够提高海洋皮温的测量精度.
Abstract
For the research of marine remote sensing calibration of China, a mathematical model of bulk-skin sea surface temperature is proposed to improve the measurement precision of skin sea surface temperature to 0.3℃. Skin sea surface temperature is measured by the self-designed automatic multi-spectral infrared radiometer system installed on the PY-301 oil platform in the northern part of the South China Sea, the measurement accuracy of the radiometer is better than±0.5 ℃ through standard blackbody calibration, pupil correction and skylight correction. The effect of wind speed on the bulk-skin sea surface temperature is analyzed based on the model, the skin sea surface temperature is corrected by the proposed model and Donlon model, the biases of corrected results are -0.007 6±0.297 1℃ and 0.044 6±0.324 8℃, respectively. Results prove that the proposed model is effective and can improve the measurement accuracy of skin sea surface temperature.
张建, 郝三峰, 宋庆君, 赵俍骁, 安飞. 南海北部区域海洋水体皮温-体温模型研究[J]. 光子学报, 2018, 47(11): 1101001. ZHANG Jian, HAO San-feng, SONG Qing-jun, ZHAO Liang-xiao, AN Fei. Study on Model of the Sea Surface Skin Temperature and Bulk Sea Surface Temperature in Northern Region of South China Sea[J]. ACTA PHOTONICA SINICA, 2018, 47(11): 1101001.