Freeze thawing in CPEC - National Cryosphere Desert Data Center

English name

Freeze thawing in CPEC

CSTR

CSTR:11738.11.NCDC.NIEER.DB6504.2024

DOI

10.12072/ncdc.nieer.db6504.2024

Share type

Online

Category

Others

source site

Key technologies and applications of cryospheric big data mining and analysis

contributors

WU Yuhong , NIE Yong , HAN Liqin

Datasets description

This dataset uses MODIS data to complete the freeze-thaw distribution of the China Pakistan Economic Corridor based on TTOP.

Base information

collect time	2010/01/01 - 2023/12/31
collect place	The high-altitude mountainous areas in the northern part of the China Pakistan Economic Corridor, as well as all the inland river basins along the Kashgar to Takote section of the China Pakistan Highway
altitude	240.0m - 8560.0m
data size	75.4 MiB
data format	tif
Coordinate system

Data source description

MODIS

Data processing method

(1) Data Download and Preprocessing

MODIS temperature data: Download MODIS surface temperature products MOD11A1 LST and MYD11A1LST data from NASA, with a spatial resolution of 1km and a temporal resolution of 1 day. Obtain a total of 61069 scenes of MOD11A1 daytime surface temperature data, MOD11A1 nighttime surface temperature data, MYD11A1 daytime surface temperature data, and MYD11A1 nighttime surface temperature data from 2010 to 2023. Preprocess the data by embedding, resampling, coordinate transformation, cropping, etc., and then synthesize the monthly average.

Soil types in the World Soil Database: The model requires the freeze-thaw thermal conductivity coefficients of different types of soils as input parameters. The soil data is sourced from HWSDv1.2 developed by the Vienna International Institute for Applied Systems Analysis (IIASA) and the Food and Agriculture Organization of the United Nations (FAO) in 2008. HWSDv1.2 includes the global distribution of different types of soil, with soil classification standard FAO 90, data resolution 1 km, and data projection WGS 84.

(2) TTOP model

(3) Glacier impact

Not considering the permafrost conditions beneath glaciers. Calculating frozen soil distribution based on surface temperature and TTOP model may misclassify some glaciers into frozen soil, which needs to be removed based on glacier distribution data within the study area.

Data quality description

The freeze-thaw distribution data undergoes strict quality control, and the freeze-thaw distribution is compared with literature to ensure the authenticity and spatial accuracy of the event.

Project information

#	number	name	type
1	2022YFF0711704-05		National key R & D plan
2	4217012226		National Natural Science Foundation of China
3	2022YFF0711704-04		National key R & D plan
4	2022YFF0711703	Permafrost Variable Rapid Change Intelligent Discovery and Evolution Perception Data Engineering	National key R & D plan

Citations and annotations

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For the achievements published in English, please refer to the following specifications： The dataset is provided by National Cryosphere Desert Data Center. (http://www.ncdc.ac.cn).

Data reference

WU Yuhong, NIE Yong, HAN Liqin. Freeze thawing in CPEC. National Cryosphere Desert Data Center(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.11.NCDC.NIEER.DB6504.2024.
WU Yuhong, NIE Yong, HAN Liqin. Freeze thawing in CPEC. National Cryosphere Desert Data Center(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.12072/ncdc.nieer.db6504.2024.

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license agreement

This work is licensed under a Creative Commons Attribution 4.0 International License.

Relevant data
File list

#	Dataset title
1	Permafrost distribution data set of China—Pakistan Economic Corridor (2016)
2	GLOFs inventory of CPEC
3	Surge glacier of CPEC
4	Landslide inventory of CPEC
5	Dataset of Ice and Snow Collapse Events in the China Pakistan Economic Corridor (1980-2024)
6	Debris flow inventory of CPEC
7	A dataset of surface deformation along the China-Pakistan Economic Corridor from 2014 to 2018
8	Spatial and temporal dataset of precipitation in China-Pakistan Economic Corridor, from 1901 to 2018
9	Annual desertification distribution data set of China Pakistan Economic Corridor (2000-2017)
10	Monthly temperature vegetation drought index data set of China Pakistan Economic Corridor (2000-2017)