There are many lakes in the Qinghai Tibet Plateau. The glacial phenology and duration of lakes in this region are very sensitive to regional and global climate change, so they are used as the key indicators of climate change research, especially the comparative study of the three polar environmental changes of the earth. However, due to its poor natural environment and sparse population, there is a lack of conventional field measurement of lake ice phenology. The lake ice was monitored with a resolution of 500 meters by using the normalized difference snow index (NDSI) data of MODIS. The traditional snow map algorithm is used to detect the lake daily ice amount and coverage under the condition of sunny days, and the lake daily ice amount and coverage under the condition of cloud cover are re determined through a series of steps based on the spatiotemporal continuity of the lake surface conditions. Through time series analysis, 308 lakes larger than 3km2 are identified as effective records of lake ice range and coverage, forming a daily lake ice range and coverage data set, including 216 lakes.

File naming and required software

The dataset contains 5834 grid files and one vector file. The grid is the daily lake ice range. The vector file contains the number, name, location, surface area and classification number of the lake to be processed. Users can first use vector files to determine the number, location and classification of a given lake, and then get the corresponding daily ice cover data.

Data Citations Data citation guideline What's data citation?

Cite as:

Qiu, Y. (2019). The Tibet Plateau river lake ice range / coverage data set V1.0（2002-2018）. A Big Earth Data Platform for Three Poles, DOI: 10.11922/sciencedb.744. (Download the reference： RIS | Bibtex )

Related Literatures:

1. Qiu, Y.B., Xie, P.F., Leppäranta, M., Wang, X.X., Lemmetyinen, J., Lin, H. & Shi, L.J. (2019). MODIS-based Daily Lake Ice Extent and Coverage dataset for Tibetan Plateau, Big Earth Data, 3:2, 170-185.( View Details | Bibtex)

Using this data, the data citation is required to be referenced and the related literatures are suggested to be cited.

Support Program

CASEarth:Big Earth Data for Three Poles（grant No. XDA19070000） (No:XDA19000000)

Copyright & License

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License： This work is licensed under an Attribution 4.0 International (CC BY 4.0)