Ground ice content predictions for the Northern Hemisphere permafrost region at 1-km resolution

Ground ice content is one of the least known characteristics of the permafrost-affected soils in the Northern Hemisphere. At the same time, ground ice content exerts a crucial effect on the thermal response of permafrost to changing climate and environmental conditions, and dictates the permafrost degradation-related geomorphic, hydrologic, and ecological processes, including thermokarst. This dataset presents numerical estimates of volumetric ice content over the permafrost region at a 1-km spatial resolution. The predictions are representative of pore and segregated ice contents in the topmost five meters of permafrost. We use compilations of field measurements of ground ice contents from across the permafrost region to train statistical models and to predict volumetric ice content with the aid of high-resolution geospatial data on climatic, soil and topography conditions. The dataset facilitates assessments of conditions of changing permafrost landscapes at an improved spatial and thematic resolution.

地下冰含量是北半球多年冻土区土壤中最不为人熟知的特征之一。与此同时，地下冰含量对多年冻土响应气候变化与环境变化的热响应过程发挥关键调控作用，并决定了与多年冻土退化相关的地貌、水文及生态过程，其中包括热融喀斯特。本数据集提供了空间分辨率为1千米的多年冻土区体积冰含量数值估算结果。该预测结果表征了多年冻土最表层5米范围内的孔隙冰与分凝冰含量。我们整合了全域多年冻土区的地下冰含量野外实测数据，以训练统计模型，并借助气候、土壤及地形条件的高分辨率地理空间数据，实现体积冰含量的预测。本数据集有助于在更高的空间与专题分辨率下，对多年冻土景观的变化状况开展评估。

搜集汇总

背景与挑战

背景概述

该数据集提供了北半球永久冻土区体积冰含量的1公里分辨率预测，通过统计模型结合气候、土壤和地形数据生成，代表了顶部五米内的冰含量。它旨在支持对永久冻土退化相关过程的评估，具有高空间和主题分辨率，适用于气候变化和环境研究。