在星座和云计算时代,地球观测数据对环境的影响
R Wilkinson1, M M Mleczko1, R J W Brewin2
1Environment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, United Kingdom.
The Science of the total environment
|November 18, 2023
概括
地球观测 (EO) 数据对环境的影响很大,仅仅数据存储每年就会排放超过4000的二氧化碳. 迫切需要注意解决与EO数据生命周期相关的大量能源和碳成本.
科学领域:
- 环境科学 环境科学
- 遥感 遥感 遥感 遥感
- 计算机科学 计算机科学
背景情况:
- 地球观测 (EO) 卫星的数量呈指数级增长,导致大规模的数据量.
- 数据存储和处理在很大程度上已经转移到云端,从而增加了能源和水的消耗.
- 经常忽视EO数据生命周期的环境影响,包括数据中心和组件制造.
研究的目的:
- 提供EO数据生命周期对环境足迹的首次评估.
- 为了估计与存储和处理EO数据相关的碳排放.
- 为了比较基于云的环境成本与桌面的EO数据处理.
主要方法:
- 估计全球EO数据收集的总量及其年度增长.
- 计算数据存储产生的二氧化碳等价排放量.
- 分析在谷歌地球引擎 (GEE) 等云平台上执行的特定EO函数的碳足迹.
主要成果:
- 全球EO数据收集量约为807 petabyte (PB),每年增加100 PB.
- 数据存储每年产生相当于4,101的二氧化碳排放量.
- 基于云的EO功能,例如使用GEE的Landsat 9场景上的频段算法,产生可测量的CO2e排放,根据数据中心位置而异.
结论:
- EO数据生命周期对环境的影响需要EO社区的批判性考虑.
- 对于EO提供商在数据中心位置及其特定环境影响方面提高透明度至关重要.
- 开发工具来衡量EO云计算的环境成本对于可持续实践至关重要.
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