Arid
DOI10.3964/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
ISSN1000-0593
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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