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全球陆地系统地图以1公里的分辨率为1.5°C的气候
Yifan Gao1, Haewon McJeon2, Yang Ou3,4
1State Key Laboratory of Earth Surface Processes and Hazards Risk Governance, Faculty of Geographical Science, Beijing Normal University, Beijing, 100875, China.
Scientific data
|April 22, 2025
概括
新的陆地系统地图预测1.5°C气候场景下的全球变化. 这项研究为气候变化减缓和地球系统研究提供了可靠的高分辨率数据.
科学领域:
- 地球系统科学 地球系统科学
- 气候变化建模模型
- 土地使用变化分析分析
背景情况:
- 气候承诺旨在控制温度,但具有连续的地球系统效应.
- 准确的土地变化预测产品对于评估这些影响至关重要.
- 现有的预测产品依赖于共享社会经济路径 (SSP) 和代表性度路径 (RCP).
研究的目的:
- 开发一种全面的方法,为2100年生成高分辨率的土地系统地图.
- 在1.5°C气候场景和基线场景下创建地图.
- 为全球气候变化减缓研究提供可靠的定量支持.
主要方法:
- 全球变化分析模型 (GCAM),Globeland30和Land-N2N模型的协调.
- 生成1公里空间分辨率和30种土地系统类型的土地系统地图.
- 使用卡帕系数和优点图 (FoM) 评估土地-N2N模型.
主要成果:
- 陆地-N2N模型表现出高可靠性,平均卡帕系数为83.14%,FoM为8.48%.
- 生成的土地系统地图反映了当地土地覆盖密度 (高,中,低).
- 这项研究为在特定气候场景下对2100个陆地系统产生了新的数据集.
结论:
- 开发的方法为全球气候变化缓解提供了可靠,精细分辨率的定量支持.
- 生成的陆地系统地图是相关的地球系统研究的基本数据.
- 这项工作提高了在不同气候场景下预测土地系统变化的能力.
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