30 m resolution lake ice type data set of Qinghai Tibet Plateau, Siberia and alaga river lake region, 2015-2019


Lake ice is an important parameter of Cryosphere. Its change is closely related to climate parameters such as temperature and precipitation, and can directly reflect climate change. Therefore, lake ice is an important indicator of regional climate parameter change. However, due to the poor natural environment and sparsely populated area, it is difficult to carry out large-scale field observation, The spatial resolution of 10 m and the temporal resolution of better than 30 days were used to monitor the changes of different types of lake ice, which filled in the blank of observation. The hmrf algorithm is used to classify different types of lake ice. The distribution of different types of lake ice in some lakes with an area of more than 25km2 in the three polar regions is analyzed by time series to form the lake ice type data set. The distribution of different types of lake ice in these lakes can be obtained. The data includes the sequence number of the processed lake, the year and its serial number in the time series, and vector The data set includes the algorithm used, sentinel-1 satellite data, imaging time, polar region, lake ice type and other information. Users can determine the change of different types of lake ice in time series according to the vector file.


Data file naming and use method

In the process of data set production, firstly, the sentinel-1 satellite data is downloaded from GEE platform, and then the hmrf algorithm is used to classify the downloaded data in batches to obtain the grid classification results of different lake ice types. Secondly, the raster data is converted into vector data in IDL. Finally, the vector data is post processed in ArcGIS to obtain the three polar regions from 2015 to 2019 Vector data sets of different lake ice types in the region. The data is in the folder of region, each region has different lakes, named by number, and imported into GIS to obtain the lake ice type of corresponding date.


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TIAN Bangsen, QIU Yubao. 30 m resolution lake ice type data set of Qinghai Tibet Plateau, Siberia and alaga river lake region, 2015-2019. National Tibetan Plateau Data Center, 2020. doi: 10.11888/Glacio.tpdc.270806. (Download the reference: RIS | 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)

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To respect the intellectual property rights, protect the rights of data authors,expand servglacials of the data center, and evaluate the application potential of data, data users should clearly indicate the source of the data and the author of the data in the research results generated by using the data (including published papers, articles, data products, and unpublished research reports, data products and other results). For re-posting (second or multiple releases) data, the author must also indicate the source of the original data.

Example of acknowledgement statement is included below: The data set is provided by National Tibetan Plateau Data Center (http://data.tpdc.ac.cn).


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


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Geographic coverage
East: -167.00 West: 137.00
South: 25.00 North: 72.00
Detail
  • Temporal resolution: Daily
  • Spatial resolution: 10m - 100m
  • File size: 486 MB
  • Browse count: 549 Times
  • Apply count: 0 Times
  • Share mode: protected
  • Temporal coverage: 2015-09-01 To 2019-05-31
  • Updated time: 2020-07-19

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Contact Information
: TIAN Bangsen   QIU Yubao  

Distributor: National Tibetan Plateau Data Center

Email: data@itpcas.ac.cn

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