Based on AVHRR-CDR SR products, a daily cloud-free snow cover extent dataset with a spatial resolution of 5 km from 1981 to 2019 was prepared by using decision tree classification method. Each HDF4 file contains 18 data elements, including data value, data start date, longitude and latitude, etc. At the same time, to quickly preview the snow distribution, the daily file contains the snow area thumbnail, which is stored in JPG format. This data set will be continuously supplemented and improved according to the real-time satellite remote sensing data and algorithm update (up to may 2019), and will be fully open and shared.
数据使用方法
The data is stored in HDF format; The file name is: NIEER_ GF AVHRR SCE_ YYMMDD_ DAILY_ 5km_ V01, where YY represents the year, mm represents the month and DD represents the date; Reading mode: any software supporting HDF format reading, such as HDF explorer, envi, ArcGIS, etc
1. Hao, X., Huang, G., Che, T., Ji, W., Sun, X., Zhao, Q., Zhao, H., Wang, J., Li, H., and Yang, Q.: The NIEER AVHRR snow cover extent product over China – a long-term daily snow record for regional climate research, Earth Syst. Sci. Data, 13, 4711–4726, https://doi.org/10.5194/essd-13-4711-2021, 2021.(查看)
数据的引用
HAO Xiaohua. (2021). Daily 5-km Gap-free AVHRR snow cover extent product over China (1981-2019). 国家青藏高原科学数据中心, 2021. doi:
10.11888/Snow.tpdc.271381.
[Hao, X. (2021). Daily 5-km Gap-free AVHRR snow cover extent product over China (1981-2019). National Tibetan Plateau Data Center, 2021]
使用本数据时必须引用“文章的引用”中列出的文献，并进行数据的引用
使用条款
To respect the intellectual property rights, protect the rights of data authors, expand services 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the data in the research results generated by using the data (including published papers, articles, data products, and unpublished research reports, data products and other results).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.
1. Hao, X., Huang, G., Che, T., Ji, W., Sun, X., Zhao, Q., Zhao, H., Wang, J., Li, H., and Yang, Q.: The NIEER AVHRR snow cover extent product over China – a long-term daily snow record for regional climate research, Earth Syst. Sci. Data, 13, 4711–4726, https://doi.org/10.5194/essd-13-4711-2021, 2021.
本数据要求的数据的引用方式:
HAO Xiaohua. (2021). Daily 5-km Gap-free AVHRR snow cover extent product over China (1981-2019). 国家青藏高原科学数据中心, 2021.
doi:
10.11888/Snow.tpdc.271381.
[Hao, X. (2021). Daily 5-km Gap-free AVHRR snow cover extent product over China (1981-2019). National Tibetan Plateau Data Center, 2021.
doi:
10.11888/Snow.tpdc.271381. ]
This work is licensed under an
Attribution 4.0 International (CC BY 4.0)
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