青藏高原地区10米分辨率卫星遥感影像季度产品（2021）

青藏高原地区季度合成卫星遥感影像集，通过对Sentinel-2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。

Quarterly composite satellite remote sensing image dataset of the Qinghai-Tibet Plateau. It is derived from cloud-removal composite processing of Sentinel-2 apparent reflectance time series products, and includes a total of 4 bands covering visible light and near-infrared, with a spatial resolution of approximately 10 meters. Annually, the dataset is divided into 4 quarters based on the periods of January-March, April-June, July-September, and October-December. Cloud masks for each temporal image are generated by comprehensively utilizing the information of visible bands, cirrus band, aerosol band and near-infrared band from Sentinel-2 data. All masked images within a single quarter are composited following the median principle to produce cloud-free satellite remote sensing images of the Qinghai-Tibet Plateau.