青藏高原五道梁地区多年冻土活动层厚度数据产品（2017-2020）

基于SBAS-InSAR技术获取的地表季节性形变以及基于变分模态分解校正后的ERA5-Land时空多层土壤湿度数据反演青藏高原五道梁多年冻土区域的活动层厚度，数据时间范围为2017-2020年，空间分辨率为1km。该数据产品可用于研究青藏高原多年冻土区域活动层厚度变化以及分析其与气候变化以及水循环、能量循环的相互作用关系，对于了解多年冻土退化状况、高原环境演化以及冻土退化对生态和气候的影响具有重要意义。

This dataset retrieves the active layer thickness (ALT) in the permafrost region of Wudaoliang, Qinghai-Tibet Plateau, by utilizing two types of geospatial data: surface seasonal deformation derived from SBAS-InSAR technology, and spatiotemporal multi-layer soil moisture data from ERA5-Land that has been corrected via Variational Mode Decomposition (VMD). The temporal coverage of this dataset ranges from 2017 to 2020, with a spatial resolution of 1 km. This dataset can be employed to examine spatiotemporal changes in active layer thickness across the permafrost regions of the Qinghai-Tibet Plateau, as well as to analyze their interactive relationships with climate change, the water cycle and the energy cycle. It is of great importance for comprehending the status of permafrost degradation, the evolutionary dynamics of the plateau's environment, and the impacts of permafrost degradation on both ecosystems and climate.