The data set mainly includes the ice observation frequency (ICO) of north temperate lakes in four periods from 1985 to 2020, as well as the location, area and elevation of the lakes. Among them, the four time periods are 1985-1998 (P1), 1999-2006 (P2), 2007-2014 (P3) and 2015-2020 (P4) respectively, in order to improve the "valid observation" times in the calculation period and improve the accuracy. The ICO of the four periods is calculated by the ratio of "icing" times and "valid observation" times counted by all Landsat images in each period. Other lake information corresponds to the HydroLAKEs data set through the "hylak_id" column in the table. In addition, the data only retains about 30000 lakes with an area of more than 1 square kilometer, which are valid for P1-P4 observation. The data set can reflect the response of Lake icing to climate change in recent decades.

File naming and required software

The data is stored in tabular form, and each row is the calculation result of a lake. The lake information corresponds to the hydrolakes dataset through the "hylak_id" column in the table. "Ico_p1 (%)"," ico_p2 (%)", "ico_p3 (%)" and "ico_p4 (%)" are the ICO results of four periods.

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Cite as:

Wang, X. (2021). Long time series data set of north temperate lake ice cover occurrence values (1985-2020). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Hydro.tpdc.271744. CSTR: 18406.11.Hydro.tpdc.271744. (Download the reference： RIS | Bibtex )

Related Literatures:

1. Wang, X., Feng, L., Gibson, L., Qi, W., Liu, J., Zheng, Y., Tang, J., Zeng, Z., & Zheng, C. (2021). High-resolution mapping of ice cover changes in over 33,000 lakes across the North Temperate Zone. Geophysical Research Letters, e2021GL095614( View Details | Bibtex)

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

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