Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11442-018-1482-0 |
Spatio-temporal differences in cloud cover of Landsat-8 OLI observations across China during 2013-2016 | |
Xiao, Chiwei1,2; Li, Peng1,2,3; Feng, Zhiming1,2; Wu, Xingyuan3 | |
通讯作者 | Li, Peng |
来源期刊 | JOURNAL OF GEOGRAPHICAL SCIENCES
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ISSN | 1009-637X |
EISSN | 1861-9568 |
出版年 | 2018 |
卷号 | 28期号:4页码:429-444 |
英文摘要 | Currently, the historical archive images of Landsat family sensors are probably the most effective data products for tracking global longitudinal changes since the 1970s. However, the issue of the degree and extent of cloud coverage is always a challenge and varies distinctively worldwide. So far, acquisition probability (AP) analyses of cloud cover (CC) of Landsat observations have been conducted with different sensors at regional scale. To our knowledge, CC probability analysis for the newly-launched Landsat-8 Operational Land Imager (OLI) across China is not reported. In this paper, monthly, seasonal, and annual APs for Landsat OLI (44,228 in total) images over China acquired from April 2013 to October 2016 with various CC thresholds were analyzed. The results showed that: first, the cumulative average APs of all OLI data over China at the CC thresholds <= 30% was about 49.6% which illustrated the availability of OLI imagery across China. Second, the spatial patterns of 10%, 20%, and 30% CC thresholds of OLI observations, coincided well with the precipitation distributions separated by the respective 200 mm, 400 mm, and 800 mm isohyetal lines. Third, the APs of images with the 30% CC threshold are the highest in autumn and winter especially in October of 58.7%, while the corresponding lowest probability occurred in June of 41.0%. Finally, the spatial differences in APs of targeted images with <= 30% CC thresholds were quite significant. At regional scales, the arid and semi-arid areas, Inland River and Songliao River basins, and northwestern side of the Hu Huanyong population line had the larger probabilities of obtaining high-quality images. Our study suggested that OLI imagery satisfy the data requirements needed for land surface monitoring, although there existed obvious spatio-temporal differences in APs over China at the 30% CC threshold. |
英文关键词 | cloud cover (CC) spatio-temporal changes Landsat-8 OLI acquisition probability (AP) China |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000426586300004 |
WOS关键词 | CONTERMINOUS UNITED-STATES ; LAND-COVER ; SHADOW DETECTION ; BORDER REGION ; IMAGERY ; PATTERNS ; IMPACTS ; AVAILABILITY ; SYSTEMS ; ETM |
WOS类目 | Geography, Physical |
WOS研究方向 | Physical Geography |
来源机构 | 中国科学院地理科学与资源研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/210939 |
作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China; 3.Jiangxi Normal Univ, Key Lab Poyang Lake Wetland & Watershed Res, Minist Educ, Nanchang 330022, Jiangxi, Peoples R China |
推荐引用方式 GB/T 7714 | Xiao, Chiwei,Li, Peng,Feng, Zhiming,et al. Spatio-temporal differences in cloud cover of Landsat-8 OLI observations across China during 2013-2016[J]. 中国科学院地理科学与资源研究所,2018,28(4):429-444. |
APA | Xiao, Chiwei,Li, Peng,Feng, Zhiming,&Wu, Xingyuan.(2018).Spatio-temporal differences in cloud cover of Landsat-8 OLI observations across China during 2013-2016.JOURNAL OF GEOGRAPHICAL SCIENCES,28(4),429-444. |
MLA | Xiao, Chiwei,et al."Spatio-temporal differences in cloud cover of Landsat-8 OLI observations across China during 2013-2016".JOURNAL OF GEOGRAPHICAL SCIENCES 28.4(2018):429-444. |
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