Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3964/j.issn.1000-0593(2016)08-2378-06 |
Precipitable Water Vapor Retrieval with MODIS Near Infrared Data | |
Zhang Tian-long1; Wei Jing1; Gan Jing-min1; Zhu Qian-qian2; Yang Dong-xu2 | |
通讯作者 | Wei Jing |
来源期刊 | SPECTROSCOPY AND SPECTRAL ANALYSIS
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ISSN | 1000-0593 |
出版年 | 2016 |
卷号 | 36期号:8页码:2378-2383 |
英文摘要 | Precipitable water vapor (PWV) shows great significance in remote sensing quantitative application and ecological research. Aiming at solving the problems of traditional methods, an Improved Continuum Interpolated Band Ratio (ICIER) algorithm was proposed based on the ratios of apparent reflectance of multi-channels in this paper. The ICIBR algorithm considers the absorption characteristics of water vapor absorption in three MODIS near infrared channels (Bands 17, 18 and 19) and the relationship between the PWV and the ICIBRs of above three channels were simulated by using the MORTRAN model. Then the PWV retrieval model for MODIS data was constructed. Texas, Oklahoma region, a typical arid/semi-arid areas, located in North South America were selected as the study area and four different MODIS 1B data were obtained to perform PWV retrieval experiments using the ICIBR algorithm. Last, the corresponding GPS PWV ground observation data provided by SuomiNet and the MODIS PWV product (MOD05) were obtained to verify the experiment results. Evaluation and comparison results showed that the PWV retrievals showed a higher consistency (r=0.967) with the GPS ground measured PWV data with smaller RMSE similar to 0.276 cm and a total of 71.08% of observation points falling within PWV Expected Errors (EE similar to +/- 0.05+0.15PWV(gps)). Moreover, the ICIER algorithm showed an obviously great improvement in PWV estimation, which can effectively reduce 61% overestimation of PWV retrievals than MOD05 PWV products. This new algorithm is more simple and practical with an overall more reliable retrieval accuracy. |
英文关键词 | Precipitable water vapor (PWV) Improved continuum interpolated band ratio (ICIBR) MODIS SuomiNet MOD05 |
类型 | Article |
语种 | 中文 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000382096600004 |
WOS关键词 | DIFFERENTIAL ABSORPTION |
WOS类目 | Spectroscopy |
WOS研究方向 | Spectroscopy |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196548 |
作者单位 | 1.Shandong Univ Sci & Technol, Geomat Coll, Qingdao 266590, Peoples R China; 2.Zhejiang Tourism Coll, Hangzhou 310000, Zhejiang, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang Tian-long,Wei Jing,Gan Jing-min,et al. Precipitable Water Vapor Retrieval with MODIS Near Infrared Data[J],2016,36(8):2378-2383. |
APA | Zhang Tian-long,Wei Jing,Gan Jing-min,Zhu Qian-qian,&Yang Dong-xu.(2016).Precipitable Water Vapor Retrieval with MODIS Near Infrared Data.SPECTROSCOPY AND SPECTRAL ANALYSIS,36(8),2378-2383. |
MLA | Zhang Tian-long,et al."Precipitable Water Vapor Retrieval with MODIS Near Infrared Data".SPECTROSCOPY AND SPECTRAL ANALYSIS 36.8(2016):2378-2383. |
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