Long-term series of daily snow depth dataset in China (1979-2021) -->

Long-term series of daily snow depth dataset in China (1979-2021)

This data set is an upgraded version of "China snow depth long time series data set (1978-2012)".

The long time series data set of snow depth in China (1979-2021) adopts longitude and latitude projection, and the data is floating-point. Data sets are stored by year. Each year is a compressed package, and each compressed package contains daily snow depth files. The daily snow depth is stored in a TXT file named "yyyyddd.txt", where yyyy stands for year, DDD stands for Julian date, and the unit of snow depth is cm. For example, 2005001 Txt represents this ASCII file to describe the snow cover in China on the first day of 2005. The ASCII code file of the data set is composed of a header file and the main content. The header file consists of 6 lines of description information, such as the number of rows, the number of columns, the coordinates of the x-axis center point, the y-axis center point, the grid size, and the label value of the no data area. The main content is a two-dimensional group composed of the number of rows and columns. The unit of snow depth is cm. Because the space described by all ASCII files in the data set is nationwide in China, the header files of these files are unchanged. Now the header files are excerpted as follows (where xllcenter, yllcenter and cellsize are in degrees):

Ncols 321

Nrows 161

Xllcenter 60

Yllcenter 15

Cellsize 0.25

NoData_ Value -1

File naming and required software

Naming convention of which is year + day; for example, 1990001 represents the first day of 1990, and 1990207 represents the 207th day of 1990. For a detailed data description, please refer to the data specification document.

Data Citations Data citation guideline What's data citation?
Cite as:

Che, T., Dai, L. (2015). Long-term series of daily snow depth dataset in China (1979-2021). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Geogra.tpdc.270194. CSTR: 18406.11.Geogra.tpdc.270194. (Download the reference: RIS | Bibtex )

Related Literatures:

1. Che, T., Li, X., Jin, R., Armstrong, R., &Zhang, T.J. (2008). Snow depth derived from passive microwave remote-sensing data in China. Annals of Glaciology, 49, 145-154.( View Details | Bibtex)

2. Dai, L.Y., Che, T., &Ding, Y.J. (2015). Inter-calibrating SMMR, SSM/I and SSMI/S data to improve the consistency of snow-depth products in China. Remote Sensing, 7(6), 7212-7230.( View Details | Download | Bibtex)

3. Dai, L.Y., Che, T., Ding, Y.J., &Hao, X.H. (2017). Evaluation of snow cover and snow depth on the Qinghai–Tibetan Plateau derived from passive microwave remote sensing. The Cryosphere, 11(4), 1933-1948.( 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)

The Strategic Priority Research Program of the Chinese Academy of Sciences (No:XDA19070101) [XDA19070101]

Copyright & License

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. The results published in Chinese can be indicated by the following specifications: Data from the Heihe Plan Data Management Center (http://westdc.westgis.ac.cn). The results published in English can be indicated by the following specifications: The data set is provided by Cold and Arid Regions Sciences Data Center at Lanzhou (http://westdc.westgis.ac.cn).

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

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Geographic coverage
East: 140.00 West: 60.00
South: 15.00 North: 55.00
  • Temporal resolution: Daily
  • Spatial resolution: km
  • File size: 5,493 MB
  • Views: 47,084
  • Downloads: 2,352
  • Access: Open Access
  • Temporal coverage: 1979-04-25 To 2020-04-23
  • Updated time: 2022-06-15
: CHE Tao   DAI Liyun  

Distributor: A Big Earth Data Platform for Three Poles

Email: poles@itpcas.ac.cn

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