基于MODIS数据的新疆湖冰物候数据集（2001-2018）

该数据集提供了2001-2018年新疆维吾尔自治区23个湖泊的湖冰物候，包括开始冻结日、完全冻结日、开始消融日和完全消融日。数据集采用动态阈值法提取自经过双星去云和临近日去云后的中分辨率成像光谱仪（MODIS）每日积雪产品。结果与基于被动微波获取的湖冰物候数据集表现出一致的变化趋势。新疆湖泊一般每年10月至12月开始结冰，3月至6月逐渐消融，平均湖冰覆盖时间为167天。该数据可为新疆地区湖泊系统响应气候变化的相关研究提供数据基础。

This dataset provides lake ice phenology data for 23 lakes in the Xinjiang Uygur Autonomous Region from 2001 to 2018, including the first freeze date, full freeze date, first break-up date, and full break-up date. It was derived using a dynamic threshold method from the Moderate Resolution Imaging Spectroradiometer (MODIS) daily snow cover products, which underwent dual-satellite cloud removal and near-daily temporal cloud removal processing. The results exhibit consistent changing trends with the lake ice phenology dataset obtained via passive microwave observations. Lakes in Xinjiang typically start freezing from October to December each year and gradually undergo break-up between March and June, with an average lake ice cover duration of 167 days. This dataset can serve as a foundational data resource for studies on lake system responses to climate change in the Xinjiang region.

搜集汇总

背景与挑战

背景概述

该数据集基于MODIS遥感数据，提供了2001-2018年新疆23个湖泊的湖冰物候信息，包括开始冻结、完全冻结、开始消融和完全消融日期。数据采用动态阈值法提取，空间分辨率在100米至1公里之间，可用于研究湖泊系统对气候变化的响应。