| An efficient algorithm for calculating photosynthetically active radiation with MODIS products | |
| Tang, WJ (Tang Wenjun)1,2; Qin, J (Qin Jun)1; Yang, K (Yang Kun)1,2,3; Niu, XL (Niu Xiaolei)1; Min, M (Min Min)4; Liang, SL (Liang Shunlin)5,6; Tang, WJ | |
| Source Publication | REMOTE SENSING OF ENVIRONMENT
 |
| 2017 | |
| Volume | 194Issue:0Pages:146-154 |
| DOI | 10.1016/j.rse.2017.03.028 |
| Abstract | 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. |
| Subject Area | 自然地理学 |
| WOS ID | WOS:000401888600011 |
| Language | 英语 |
| Indexed By | SCI |
| Keyword | SURFACE SOLAR IRRADIANCE SATELLITE DATA ATMOSPHERE PRODUCTS PAR CHINA CLOUD |
| WOS Research Area | Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology |
| WOS Subject | Environmental Sciences; Remote Sensing; Imaging Science & Photographic Technology ; Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology |
| Cooperation Status | 国际 |
| Subtype | Article |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itpcas.ac.cn/handle/131C11/8232 |
| Collection | 图书馆 |
| Corresponding Author | Tang, WJ |
| Affiliation | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China. 2.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China. 3.Tsinghua Univ, Dept Earth Syst Sci, Beijing 100084, Peoples R China. 4.China Meteorol Adm, Natl Satellite Meteorol Ctr, Beijing 100081, Peoples R China. 5.Beijing Normal Univ, Sch Geog, State Key Lab Remote Sensing Sci, Beijing 100875, Peoples R China. 6.Univ Maryland, Dept Geog, College Pk, MD 20742 USA. |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| V.194 146-154 2017.p（1807KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment