浏览全部资源
扫码关注微信
摘要
Diffuse attenuation coefficient of downwelling irradiance at 490nm
Kd（490）
is one of the important ocean optical properties.The retrieval model is of great interest especially for the optically complex water
where terrestrial influence on ocean optical properties is significant.Comprehensive bio-optical dataset were acquired in the nearshore area of the Bohai Sea in 2005.Statistical retrieval model for Kd（490） based on remote sensing reflectance spectra is developed.The model is validated by in situ data with the Absolute Percentage Difference（APD）
Root Mean Square error（RMS
in log10 scale） and Pearson correla-tion coefficient（in log10 scale） of 18.4%
0.094 m-1 and 0.902 respectively between in situ and retrieved Kd（490） values.Error performance of the model is analyzed and it is shown that APD of the retrieval is better than 30% for 76% of all the in situ data.Model’s sensitivity to the input noise is analyzed by imposing ±5% error of remote sensing reflectance spectra artificially
which proves that the model is robust and reliable with the error fluctuation of model output being less than 9% for APD and 0.035 m-1 for RMS.The model is applied to ENVISAT MERIS data to give the spatial distribution of Kd（490） of the Bohai Sea.
Abstract
Diffuse attenuation coefficient of downwelling irradiance at 490nm
Kd（490）
is one of the important ocean optical properties.The retrieval model is of great interest especially for the optically complex water
where terrestrial influence on ocean optical properties is significant.Comprehensive bio-optical dataset were acquired in the nearshore area of the Bohai Sea in 2005.Statistical retrieval model for Kd（490） based on remote sensing reflectance spectra is developed.The model is validated by in situ data with the Absolute Percentage Difference（APD）
Root Mean Square error（RMS
in log10 scale） and Pearson correla-tion coefficient（in log10 scale） of 18.4%
0.094 m-1 and 0.902 respectively between in situ and retrieved Kd（490） values.Error performance of the model is analyzed and it is shown that APD of the retrieval is better than 30% for 76% of all the in situ data.Model’s sensitivity to the input noise is analyzed by imposing ±5% error of remote sensing reflectance spectra artificially
which proves that the model is robust and reliable with the error fluctuation of model output being less than 9% for APD and 0.035 m-1 for RMS.The model is applied to ENVISAT MERIS data to give the spatial distribution of Kd（490） of the Bohai Sea.
关键词
Keywords
references
相关文章
相关作者
相关机构
- 地址：北京市海淀区北四环西路19号 《遥感学报》编辑部 邮编：100190
- 联系电话：010-58887052 Email：nrsb@aircas.ac.cn
- 技术支持由北京北大方正电子有限公司提供 京ICP备20021838号-9
京公网安备11010802024621 - 本系统建议在Chrome、 IE9+ 以上版本浏览器阅读本站内容，360浏览器请切换至极速模式
- Cookies帮助我们提供服务并提供个性化体验。使用本网站，即表示您同意我们使用Cookies
