"Northern Hemisphere permafrost near-surface underground ice grid dataset officially released."

From the Northwest Institute of Eco-Environment and Resources of the Chinese Academy of Sciences, it is reported that a team of researchers led by Professor Ran Youhua, in collaboration with the Institute of Tibetan Plateau Research of the Chinese Academy of Sciences, China University of Geosciences, and the University of Oulu in Finland, has recently released a high-precision, 1-kilometer resolution dataset of near-surface subterranean ice in the northern hemisphere permafrost. This dataset provides a crucial data foundation for assessing the impact of permafrost. The dataset shows that the total volume of underground ice within 5 meters below the upper limit of permafrost in the Northern Hemisphere is approximately 54,600 cubic kilometers, more than twice the previous estimate based on the distribution map of underground ice by the International Permafrost Association. The spatial pattern is basically consistent, but the spatial details have been significantly improved.