青藏高原多源卫星数据与生态系统关键参数遥感产品集 最新来稿(未评审) 版本 ZH1
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2016–2022年青藏高原10米分辨率卫星遥感季度RTU产品
Qinghai-Tibet Plateau 10-meter resolution satellite remote sensing quarterly RTU products from 2016 to 2022
: 2024 - 05 - 08
: 2024 - 05 - 09
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摘要&关键词
摘要:青藏高原对全球气候变化、水文循环和生物多样性保护具有至关重要的影响。基于2016至2022年全时相的Sentinel-2卫星影像数据,制作了青藏高原地区的即得即用遥感季度合成影像产品。产品通过对Sentinel-2卫星表观反射率时间序列产品进行去云合成处理得到,含可见光和近红外共4波段,空间分辨率约为10米。每年按1月-3月、4月-6月、7月-9月、10月-12月分为4个季度,综合利用Sentinel-2数据的可见光波段、卷云波段、气溶胶波段及近红外波段信息得到各时相影像的云掩膜,并按中位数原则对一个季度内所有掩膜后的影像进行合成,得到青藏高原地区的无云卫星遥感影像。此数据集反映了七年间青藏高原地表情况与环境变化的连续记录,适用于植被健康监测、土壤侵蚀评估、生态修复研究以及地表覆盖变化检测等多领域研究。
关键词:青藏高原;哨兵二号;无云;可见光;近红外;即得即用
Abstract & Keywords
Abstract: The Qinghai-Tibet Plateau (QTP) has a crucial impact on global climate change, hydrological cycle, and biodiversity conservation. Based on the full-phase Sentinel-2 satellite image data from 2016 to 2022, a ready-to-use remote sensing quarterly composite image product of the QTP region was produced. The product is obtained by cloud-free synthesis processing of the Sentinel-2 satellite surface reflectance time series product, including 4 bands of visible light and near infrared, with a spatial resolution of about 10 meters. Each year is divided into 4 quarters according to January-March, April-June, July-September, and October-December. The cloud mask of each phase image is obtained by comprehensively using the visible light band, cirrus band, aerosol band, and near infrared band information of Sentinel-2 data, and the images masked within a quarter are synthesized according to the median principle, to obtain cloud-free satellite remote sensing images of the QTP. This dataset reflects the continuous records of surface conditions and environmental changes of the QTP over seven years, and is applicable to multi-field research such as vegetation health monitoring, soil erosion assessment, ecological restoration research, and land cover change detection.
Keywords: Qinghai-Tibet Plateau; Sentinel-2; Cloud-free; Visible light; Near infrared; Ready-To-Use (RTU)
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稿件与作者信息
龙腾飞
LONG Tengfei
何国金
HE Guojin
hegj@aircas.ac.cn
彭燕
PENG Yan
王桂周
WANG Guizhou
第二次青藏高原科学考察和研究计划(2019QZKK030701)
The Second Tibetan Plateau Scientific Expedition and Research Program (STEP) (No. 2019QZKK030701)
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出版历史
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中国科学数据
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