岱海湖冰长时间序列数据集（2000-2020年）

该数据集为湖冰物候数据集、包括岱海2000-2020年每年10月至次年5月每日湖冰分布，以及每年的湖冰物候期。根据MODIS 全球每日积雪覆盖产品 MOD10A1 提供的积雪覆盖数据作为湖冰分布数据；计算当日湖冰面积与湖泊总面积的比值，得到湖冰物候，面积比大于（小于）10%为开始冻结日（完全融化日），面积比大于（小于）90%为完全冻结日（开始融化日），整理后得到该数据集。
数据集湖冰分布数据为为TIF格式、湖冰物候为Excel格式。湖冰分布分年存放。

This dataset is a lake ice phenology dataset, which includes daily lake ice distribution data of Daihai Lake from October to the following May annually during 2000–2020, as well as annual lake ice phenological periods. The snow cover data provided by the MODIS global daily snow cover product MOD10A1 was used as the lake ice distribution data. Lake ice phenology was derived by calculating the ratio of the daily lake ice area to the total lake area. Specifically, the day when the area ratio exceeds 10% is defined as the start of freezing date, while the day when the ratio drops below 10% is defined as the complete melting date; the day when the ratio exceeds 90% is the complete freezing date, and the day when the ratio drops below 90% is the start of melting date. The final dataset was obtained after organizing these data.

The lake ice distribution data in the dataset is stored in TIF format, while the lake ice phenology data is stored in Excel format. The annual lake ice distribution data is stored separately by year.

搜集汇总

背景与挑战

背景概述

岱海湖冰长时间序列数据集（2000-2020年）包含岱海湖每日湖冰分布和年度湖冰物候期数据，基于MODIS MOD10A1产品生成，空间分辨率500米，时间分辨率1天，适用于湖冰物候研究。