%0 Dataset
%T A new permafrost distribution map over the Qinghai-Tibet Plateau for 2010
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/3372d42f-7df8-4ee2-868d-4ee92be9c21f
%W NCDC
%R 10.12072/ncdc.permalab.db3965.2023
%A Zhuotong Nan
%K Qinghai-Tibet Plateau;Permafrost distribution map;benchmark map
%X This new permafrost distribution map over the Qinghai-Tibet Plateau (QTP) for 2010 was created through a novel permafrost mapping approach with satellite data as inputs and survey-based subregion permafrost maps as constraints. The ground surface thawing and freezing indices, as driving data for the mapping approach, were derived from remotely sensed land surface temperature data. The mapping approach takes the effects of local factors into account by incorporating a permafrost-related soil parameter in the model whose values are optimally estimated through spatial clustering based on environmental variables and parameter optimization technique with the survey-based subregion permafrost maps as an optimization objective. This new map indicates a total permafrost area of about 1.086×106 km2 (41.2% of the QTP) and seasonally frozen ground of about 1.447×106 km2 (54.9% of the QTP) in 2010 with glaciers and lakes excluded. The validations against survey-based subregion permafrost maps (κ = 0.74) and borehole records (Overall Accuracy = 0.85 and κ = 0.43) showed a higher accuracry compared with two other recent maps. This map can serve as a benchmark map at sufficient quality for land surface simulations and as a historical reference for projecting future permafrost changes  on the QTP. Data format: geotiff; spatial resolution: approx. 1km; spatial reference: lat/lon (WGS84).