The Qinghai-Tibet Engineering Corridor runs from Golmud to Lhasa. It passes through the core region of the Qinghai-Tibet Plateau and is an important passage connecting the interior and Tibet. The active layer thickness (ALT) is not only an important index to study the thermal state of ground in permafrost region, but also a key factor to be considered in the construction of permafrost engineering. The core of GIPL1.0 is kudryavtesv method, which takes into account the thermophysical properties of snow cover, vegetation and different soil layers. However, Yin Guoan et al. found that compared with kudryavtesv method, the accuracy of TTOP model is higher, so they improved the model in combination with freezing / thawing index. Through verification of field monitoring data, it was found that the simulation error of ALT is less than 50cm. Therefore, the ALT in the Qinghai Tibet project corridor is simulated by using the improved GIPL1.0 model, and the future ALT under the ssp2-4.5 climate change scenario is predicted.

File naming and required software

Filename: the data of the ALT is stored as raster, and the filename is "ALT_ssp45xx. TIF", where XX stands for 30, 50 or 70, respectively representing the spatial distribution data of the ALT in 2021-2040, 2041-2060 and 2061-2080.
Data reading method: it can be opened by ArcGIS.

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Cite as:

Niu, F. (2022). The distribution map of active layer thickness in Qinghai Tibet engineering corridor (2015-2065). A Big Earth Data Platform for Three Poles, DOI: 10.11888/Cryos.tpdc.272819. CSTR: 18406.11.Cryos.tpdc.272819. (Download the reference： RIS | Bibtex )

Related Literatures:

1. Yin, G.A., Niu, F.J., Lin, Z.J., Luo, J., & Liu, M.H. (2021). Data-driven spatiotemporal projections of shallow permafrost based on CMIP6 across the Qinghai‒Tibet Plateau at 1 km2 scale. Advances in Climate Change Research, 12, 814-827.( 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)

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