This data is based on Modis product data, processed through resampling, concatenation, etc., to obtain the annual average snow cover rate map of the Qaidam Basin from 2000 to 2018.
This dataset is mainly used for scientific research on the cryosphere.
Mod10a1 data from NASA（ https://www.nasa.gov/ )。
The daily snow cover rate data is obtained on the basis of MODIS product data mod10a1 through resampling, splicing, clipping and other preprocessing, and cloud removal algorithm based on cubic spline function interpolation. Finally, ArcGIS is used to calculate the annual average snow cover rate and the area with DEM greater than 3500m is selected for mask processing to obtain the snow cover rate data of Chaimu basin.
a. Accuracy of original data
The product data of mod10a1 (500m) includes snow cover rate, quality assessment (QA) and other data. Snow cover data is based on the snow mapping algorithm tested using the normalized difference snow cover index (NDSI) and other standards.
When processing the generated data, part of the original data is retained.
| # | number | name | type |
| 1 | 2018YFC0406600 | National key R & D plan |
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CSTR:11738.11.ncdc.Hydro.db2432.2022
10.12072/ncdc.Hydro.db2432.2022