Data for: "Changes in temperature, rainfall and snow cover during the reproductive season of Arctic-breeding birds"

This repository contains the Arctic climate data products used in the associated manuscript on Arctic hydroclimatic change. The dataset includes processed outputs from ERA5 reanalysis, CMIP6 climate model simulations, and ALEVA long steady-state EC-Earth climate model experiments. The files provide Arctic time series and regional subsets of precipitation, snowfall, snow cover, near-surface air temperature, and derived rainfall (computed as precipitation minus snowfall). Data have been spatially remapped, masked, and temporally aggregated to ensure consistency across sources and to support long-term trend, variability, and extreme-event analyses. These data products represent the exact inputs used in the study’s statistical analyses and figures. They are shared to support transparency and reproducibility of the published results and are not intended to serve as raw climate model or reanalysis archives.本数据集仓库收录了配套北极水文气候变化研究手稿中所使用的北极气候数据产品。本数据集包含来自ERA5再分析资料、耦合模式比较计划第六阶段（CMIP6）气候模式模拟试验以及ALEVA长期稳态EC-Earth气候模式试验的经处理输出结果。 本数据集提供北极地区的时间序列数据与区域子集数据，涵盖降水、降雪、积雪覆盖、近地面气温，以及通过降水减去降雪推导得到的降雨数据。所有数据均经过空间重映射、掩膜处理与时间聚合，以确保不同来源数据间的一致性，并可用于开展长期趋势、变异性及极端事件分析。 本数据产物即为该研究中统计分析与图表绘制所使用的全部原始输入数据。本次公开数据旨在支撑已发表研究结果的透明性与可复现性，并非作为原始气候模式或再分析资料档案库提供。