Retrieving Chromophoric Dissolved Organic Matter in Guanting Reservoir Based on in-situ Measured Reflectance Data
文献类型：期刊论文
| 作者 | Zhou Ya-ming1; Li Jun-sheng1; Shen Qian1; Zhang Fang-fang1 |
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2015 |
| 卷号 | 35期号:4页码:384-397 |
| 关键词 | Chromophoric dissolved organic matter Yellow substance CDOM Spectral data QAA Guanting Reservoir |
| 通讯作者 | Li, JS (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth, Beijing 100094, Peoples R China. |
| 英文摘要 | In the present paper, Guanting Reservoir located in Zhangjiakou City, Hebei province and Yanqing District, Beijing, was selected as the study area, and Chromophoric dissolved organic matter (CDOM) content (represented by the CDOM absorption coefficient at 440 nm, a(CDOM)(440)) was inverted through semi-analytical method and empirical method. The data used in this paper include the spectral data (R-rs(lambda)) collected on October 26, 2013 over Guanting Reservoir and a(CDOM)(lambda) measured in the laboratory. A semi-analytical method (QAA-CDOM) was validated and improved accordingly. The inversion result accuracy of QAA-CDOM was not bad, the root-mean-square error (RMSE) was 0.10 and the mean relative error (sigma) was 10.8%. The QAA-CDOM method was improved by recalculating the value of Q (the ratio of upwelling irradiance to upwelling radiance just below the water surface) by the field spectral data to replace the fixed value. After this improvement, the inversion accuracy was slightly improved, with RMSE of 0.09 and of 10.2%. After that, four band ratios were used in linear regression with a(CDOM) (440) to build empirical inversion models. The results showed that the performance of the model based on R-rs(531)/R-rs(551) was the best, with R-2 of 0.63. The RMSE and sigma of the a(CDOM) (440) result inverted by the empirical method were 0.08 and 8.8% respectively. The empirical method was of higher precision than that of the semi-analytical method, but the bands and coefficients used in the empirical method need to be calibrated by concurrently measured data in each study area. On the contrary, semi-analytical method does not need calibration, and is easier to be applied. |
| 研究领域[WOS] | Spectroscopy |
| 收录类别 | SCI ; EI |
| 语种 | 中文 |
| WOS记录号 | WOS:000352926900030 |
| 源URL | [http://ir.ceode.ac.cn/handle/183411/38455]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1.[Zhou Ya-ming] Xian Univ Sci & Technol, Coll Geomat, Xian 710054, Peoples R China 2.[Zhou Ya-ming 3.Li Jun-sheng 4.Shen Qian 5.Zhang Fang-fang] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth, Beijing 100094, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou Ya-ming,Li Jun-sheng,Shen Qian,et al. Retrieving Chromophoric Dissolved Organic Matter in Guanting Reservoir Based on in-situ Measured Reflectance Data[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2015,35(4):384-397. |
| APA | Zhou Ya-ming,Li Jun-sheng,Shen Qian,&Zhang Fang-fang.(2015).Retrieving Chromophoric Dissolved Organic Matter in Guanting Reservoir Based on in-situ Measured Reflectance Data.SPECTROSCOPY AND SPECTRAL ANALYSIS,35(4),384-397. |
| MLA | Zhou Ya-ming,et al."Retrieving Chromophoric Dissolved Organic Matter in Guanting Reservoir Based on in-situ Measured Reflectance Data".SPECTROSCOPY AND SPECTRAL ANALYSIS 35.4(2015):384-397. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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