MODIS-Aqua漫射衰减产品<italic style="font-style: italic">K</italic><sub>d</sub>(490)在南海海域的精度对比

赵文静; 曹文熙; 胡水波; 王桂芬

doi:10.3788/OPE.20182601.0014

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MODIS-Aqua漫射衰减产品K_d(490)在南海海域的精度对比

现代应用光学 | 更新时间：2020-08-13

- MODIS-Aqua漫射衰减产品K_d(490)在南海海域的精度对比
- Comparison of diffuse attenuation coefficient of downwelling irradiance products derived from MODIS-Aqua in the South China Sea
- 光学精密工程 2018年26卷第1期页码：14-24
- 作者机构：
  
  1.环境保护部华南环境科学研究所, 广东广州 510535
  2.中国科学院南海海洋研究所热带海洋环境国家重点实验室, 广东广州 510301
  3.深圳大学海岸带地理环境监测国家测绘地理信息局重点实验室, 空间信息智能感知与服务深圳市重点实验室, 广东深圳 518060
- 作者简介：
  
  [ "赵文静(1982-), 女, 内蒙古乌兰察布人, 博士, 2014年于中科院南海海洋研究所获得博士学位, 主要从事海洋光学遥感算法及应用的研究。E-mail:wenjing_jingjing@163.com" ]
  [ "曹文熙(1963-), 男, 湖南郴州人, 博士, 研究员, 博士生导师, 1992年于中科院长春光机所获得硕士学位, 2006年于中科院南海海洋研究所获得博士学位, 享受国务院特殊津贴专家, 主要从事海洋光学、海洋监测技术和海洋生物光学特性的研究。E-mail:wxcao@scsio.ac.cn" ]
- 基金信息：
  
  国家自然科学基金资助项目(41506202);广东省自然科学基金青年基金资助项目(2014A030310287);国家重点实验室开放课题(LTO1509);中央级公益性科研院所基本科研业务费专项(PM-zx703-201601-014);湖北省自然科学基金一般项目(BZY15028)
- DOI：10.3788/OPE.20182601.0014
  中图分类号： TP79
- 收稿日期：2017-05-15，
  
  录用日期：2017-7-20，
  
  纸质出版日期：2018-01-25
- 稿件说明：
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赵文静, 曹文熙, 胡水波, 等. MODIS-Aqua漫射衰减产品K_d(490)在南海海域的精度对比[J]. 光学精密工程, 2018,26(1):14-24.

Wen-jing ZHAO, Wen-xi CAO, shui-bo HU, et al. Comparison of diffuse attenuation coefficient of downwelling irradiance products derived from MODIS-Aqua in the South China Sea[J]. Optics and precision engineering, 2018, 26(1): 14-24.
赵文静, 曹文熙, 胡水波, 等. MODIS-Aqua漫射衰减产品K_d(490)在南海海域的精度对比[J]. 光学精密工程, 2018,26(1):14-24. DOI： 10.3788/OPE.20182601.0014.

Wen-jing ZHAO, Wen-xi CAO, shui-bo HU, et al. Comparison of diffuse attenuation coefficient of downwelling irradiance products derived from MODIS-Aqua in the South China Sea[J]. Optics and precision engineering, 2018, 26(1): 14-24. DOI： 10.3788/OPE.20182601.0014.

摘要

基于遥感手段准确估算水体漫射衰减系数

（490），可为有效评价近岸海域水质、准确估算真光层深度提供有力数据和方法支撑。利用2004~2012年在南海海域获得的9个航次的实测

（490）数据，通过建立实测与遥感产品的时空匹配数据对，获取与

（490）实测数据相对应的MODIS-Aqua遥感反射率（

（

））和叶绿素

浓度（

Chl-a）

产品，分别采用算法Muller，Werdell，Morel，Lee和MODIS业务化算法KD2M对南海海域

（490）遥感产品进行精度评估与对比；在此基础上，考虑到南海海域水体的特异性，基于相应的实测

（

）和

Chl-a

数据集，利用上述算法对

（490）反演产品再次进行精度评估与对比，进而探讨

（490）产品的误差来源和算法区域化修正的必要性。基于MODIS-Aqua遥感产品，利用上述五种算法获得的MODIS-Aqua

（490）产品值与实测值的平均相对误差（APD）分别是20.12%，29.22%，17.98%，22.61%和21.61%，其中，Morel算法最优，且相关系数最高达0.5；基于相应实测数据，利用上述算法反演获得的

（490）产品精度均有不同程度的提高，特别是算法Lee和Werdell，APD分别为17.86%和17.97%，提高了5%~11%，最优算法为Morel，其APD可达15.44%。合理选取评估算法及进一步开展算法的区域性修正对于准确估算南海海域

（490）产品是非常必要的。

Abstract

The diffuse attenuation coefficient of downwelling irradiance

(490) is of great value for evaluating the coastal water quality and estimating the optical depth accurately. In this paper

the performance of MODIS-Aqua

(490) products derived using the algorithms of Muller

Werdell

Morel

Lee

and KD2M with MODIS-Aqua remote sensing reflectance

(

) and

Chl-a

products were compared in the South China Sea (SCS) based on the relaxed match-ups between MODIS-Aqua products and

in situ

data collected from 2004 to 2012. Further

taking into account the unique optical properties of the SCS waters

the performance of

(490) products derived using the above algorithms with field reflectance

(

) and

Chl-a

data were evaluated in order to analyze the causes of the uncertainties of

(490) products and the necessity of regional algorithm optimization. The results show that MODIS-Aqua

(490) products derived using the algorithms of Muller

Werdell

and Morel with MODIS-Aqua

(

) and

Chl-a

products underestimated the

in situ

data

while the algorithms of Lee and KD2M overestimated the data

with average relative errors (APD) of 20.12%

29.22%

17.98%

22.61%

and 21.61%

respectively. The algorithm of Morel performed the best

with a coefficient of determination

of 0.5. There are significant improvements in the accuracy of the above algorithms by using field

(

) and

Chl-a

data

especially for the algorithms of Werdell and Lee

with an APD of 5%-11% improvement. The algorithm of Morel performed the best

with an APD of 15.44%. It is necessary to choose the proper algorithm and conduct algorithm regionalization correction for the accuracy estimation of

(490) products in the SCS.

关键词

Keywords

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MODIS-Aqua漫射衰减产品Kd(490)在南海海域的精度对比

Comparison of diffuse attenuation coefficient of downwelling irradiance products derived from MODIS-Aqua in the South China Sea

DOI：10.3788/OPE.20182601.0014

摘要

Abstract

关键词

Keywords

references

MODIS-Aqua漫射衰减产品K_d(490)在南海海域的精度对比