The climate impact of ICT: A review of estimates, trends and regulations
The climate impact of ICT: A review of estimates, trends and regulations
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信息通信技术的气候影响：估计、趋势和法规审查
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
A. Friday
中科院分区：
文献类型：
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作者：
C. Freitag;Mike Berners;Kelly Widdicks;Bran Knowles;G. Blair;A. Friday
我们研究了同行评审的研究，这些研究估计ICT目前在全球温室气体（GHG）排放中所占的份额为全球GHG排放的1.8%-2.8%。这与欧洲政策制定的基线估计（即“超过2%”）相一致。我们确定了这些估计值的可变性来源，原因是：1）使用不同的数据源; 2）所用数据的新近性变化; 3）分析边界的不同方法，特别是什么被认为是ICT足迹的“范围”以及考虑了哪些碳足迹元素。我们的研究结果表明，所有公布的估计都系统地低估了ICT的碳足迹，可能高达25%，因为没有考虑到ICT的所有供应链和整个生命周期（即排放范围1，2和完全包容3）。调整供应链路径的截断，我们估计ICT的排放份额实际上可能高达2.1- 3.9%。我们还注意到，许多这些估计背后的数据缺乏公开性。
We examine peer-reviewed studies which estimate ICT’s current share of global greenhouse gas (GHG) emissions to be 1.8-2.8% of global GHG emissions. This corresponds with the baseline estimates for policy making in Europe (i.e. ‘more than 2%’). We identify sources of variability in these estimates due to: 1) use of different data sources; 2) variation in the recency of the data used; and 3) varying approaches to boundaries of the analysis, specifically what is considered to be ‘in the scope’ of ICT’s footprint and what elements of its carbon footprint are considered. Our findings indicate that published estimates all systematically underestimate the carbon footprint of ICT, possibly by as much as 25%, by failing to account for all of ICT’s supply chains and full lifecycle (i.e. emissions scopes 1, 2 and fully inclusive 3). Adjusting for truncation of supply chain pathways, we estimate that ICT’s share of emissions could actually be as high as 2.1-3.9%. We also note the lack of public availability of the data behind many of these estimates.
影响因子：
30.7
作者：
Le Quere, Corinne;Jackson, Robert B.;Peters, Glen P.
通讯作者：
Peters, Glen P.