An efficient algorithm for calculating photosynthetically active radiation with MODIS products
文献类型：期刊论文
| 作者 | Tang, WJ (Tang Wenjun)2,3; Qin, J (Qin Jun)2; Yang, K (Yang Kun)2,3,4; Niu, XL (Niu Xiaolei)2; Min, M (Min Min)5; Liang, SL (Liang Shunlin)1,6; Tang, WJ |
| 刊名 | REMOTE SENSING OF ENVIRONMENT
 |
| 出版日期 | 2017 |
| 卷号 | 194期号:0页码:146-154 |
| 关键词 | SURFACE SOLAR IRRADIANCE SATELLITE DATA ATMOSPHERE PRODUCTS PAR CHINA CLOUD |
| DOI | 10.1016/j.rse.2017.03.028 |
| 文献子类 | Article |
| 英文摘要 | Photosynthetically active radiation (PAR) is the critical forcing data in ecological and agricultural fields. Remote sensing can be utilized to derive spatiotemporally continuous PAR. Empirical algorithms can be used to quickly retrieve surface PAR data sets, but their accuracy cannot be guaranteed in regions without local calibration. Physical algorithms generally incorporate all relevant physical processes and can be used globally, but their computational efficiency is often low. In this paper, an efficient algorithm is developed to calculate surface PAR by combining a clear-sky PAR model and the parameterizations for cloud transmittances. In the algorithm, the transmittances for water vapor, ozone, Rayleigh, aerosol, and cloud are each handled across the whole PAR band (400700 nm). In addition, the contribution of the multiple reflections between surface ground and the atmosphere are also expressly considered. The new algorithm is applied to estimate instantaneous PAR with inputs from Moderate Resolution Imaging Spectroradiometer (MODIS) products onboard both Terra and Aqua platforms. The daily PAR is estimated from these two instantaneous values by an upscaling method. The instantaneous and daily PAR estimates were validated with in situ data collected in the USA and China. The results indicate that the new algorithm, based on MODIS products, can effectively retrieve PAR with root mean square errors (RMSE) of about 40 W m(-2) and 15 W m(-2) at instantaneous and daily-mean time scales, respectively. These performances are generally better than those of previous studies. (C) 2017 Elsevier Inc. All rights reserved. |
| 学科主题 | 自然地理学 |
| WOS研究方向 | Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000401888600011 |
| 源URL | [http://ir.itpcas.ac.cn/handle/131C11/8232]  |
| 专题 | 青藏高原研究所_图书馆 |
| 通讯作者 | Tang, WJ |
| 作者单位 | 1.Univ Maryland, Dept Geog, College Pk, MD 20742 USA. 2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China. 3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 4.Tsinghua Univ, Dept Earth Syst Sci, Beijing 100084, Peoples R China. 5.China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China. 6.Beijing Normal Univ, Sch Geog, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Tang, WJ ,Qin, J ,Yang, K ,et al. An efficient algorithm for calculating photosynthetically active radiation with MODIS products[J]. REMOTE SENSING OF ENVIRONMENT,2017,194(0):146-154. |
| APA | Tang, WJ .,Qin, J .,Yang, K .,Niu, XL .,Min, M .,...&Tang, WJ.(2017).An efficient algorithm for calculating photosynthetically active radiation with MODIS products.REMOTE SENSING OF ENVIRONMENT,194(0),146-154. |
| MLA | Tang, WJ ,et al."An efficient algorithm for calculating photosynthetically active radiation with MODIS products".REMOTE SENSING OF ENVIRONMENT 194.0(2017):146-154. |
入库方式： OAI收割
来源：青藏高原研究所
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