过去200年格陵兰冰盖表面物质平衡数据集

基于冰芯及降水的实测数据和4套降水、蒸发格点资料（包括2套再分析资料：CERA20C和ERA5以及两套区域气候模式：MAR和RACMO）。利用类克里格法重建了格陵兰冰盖地区过去200多年（1759--2017年）的雪积累率。格陵兰冰盖地区的选取范围是58.5°N–83.5°N, 11°W–75°W。重建结果的分辨率是基于原始数据的分辨率，分别为CERA20C（1°*1°）、ERA5（0.25°*0.25°）、MAR（10km）和RACMO（5.5km）。四套重建产品的大小分别为：Reconstruction-CERA20C（3.21MB）、Reconstruction-ERA5（51.30MB）、Reconstruction-MAR（76.85MB）和Reconstruction-RACMO（493.65MB）。数据可用于研究过去200年格陵兰冰盖地区雪积累变化及表面物质平衡变化规律及机理。

Based on in-situ measurements of ice cores and precipitation, as well as four gridded datasets of precipitation and evaporation (including two reanalysis datasets: CERA20C and ERA5, and two regional climate models: MAR and RACMO), we employed the Kriging-like method to reconstruct the snow accumulation rate over the Greenland Ice Sheet for the past 200+ years (1759--2017). The study domain of the Greenland Ice Sheet spans 58.5°N–83.5°N and 11°W–75°W. The spatial resolutions of the reconstruction results match those of the original datasets, specifically 1°×1° for CERA20C, 0.25°×0.25° for ERA5, 10 km for MAR, and 5.5 km for RACMO. The file sizes of the four reconstruction products are: Reconstruction-CERA20C (3.21 MB), Reconstruction-ERA5 (51.30 MB), Reconstruction-MAR (76.85 MB), and Reconstruction-RACMO (493.65 MB). This dataset can be used to investigate the variations and underlying mechanisms of snow accumulation and surface mass balance over the Greenland Ice Sheet during the past 200 years.

搜集汇总

背景与挑战

背景概述

该数据集基于冰芯及降水实测数据，结合4套降水、蒸发格点资料，利用类克里格法重建了格陵兰冰盖地区过去200多年（1759-2017年）的雪积累率，覆盖范围58.5°N–83.5°N, 11°W–75°W。数据集提供不同分辨率的重建产品（从1°*1°到5.5km），可用于分析雪积累和表面物质平衡的变化规律及机理。