A comprehensive source apportionment of global CO2 using GEOS-Chem
GEOS-Chemを用いた全球CO2の包括的な発生源寄与解析 (AI 翻訳)
H J Xu, Jinxin Chen, Yuan Yuan, Qiyuan Yang, Jiahao Huang, Yinchang Feng, Guoliang Shi
🤖 gxceed AI 要約
日本語
本研究はGEOS-Chemモデルとソースシャットオフ手法を用い、全球CO2の部門別寄与を定量化した。結果、電力熱生産（40%）、産業建設（27%）、運輸（23%）、住宅（10%）の順であり、地域差が大きいことを示した。また、陸域炭素吸収源の緩衝効果も確認した。
English
This study uses the GEOS-Chem model and a source shut-off approach to quantify sectoral contributions to global atmospheric CO2. Results show electricity and heat production (40%) as the dominant sector, followed by industry and construction (27%), transport (23%), and residential (10%), with significant spatial heterogeneity. Terrestrial carbon sinks provide a buffering effect.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の温室効果ガス排出削減対策においても、本論文のソース別寄与解析手法は参考になる。特に電力部門の寄与が大きく、アジア地域の空間的不均一性を考慮した対策の重要性を示唆する。
In the global GX context
This study provides a global sectoral breakdown of CO2 emissions using atmospheric modeling, reinforcing the importance of electricity and heat production as the largest contributor. The spatial heterogeneity highlights the need for region-specific mitigation strategies, which aligns with global climate policy frameworks like the Paris Agreement.
👥 読者別の含意
🔬研究者:Useful for improving global CO2 source attribution and understanding sectoral contributions.
🏢実務担当者:Provides sectoral benchmarks for corporate carbon footprinting, though mainly policy-oriented.
🏛政策担当者:Directly relevant for designing sector-specific emission reduction targets and monitoring progress.
📄 Abstract（原文）
Since the Industrial Revolution, rapid industrialization and fossil fuel consumption have driven a sustained increase in global CO 2 emissions, fundamentally altering Earth’s climate system and exacerbating the impacts of climate change. However, accurately quantifying the contributions of different sources to atmospheric CO 2 remains challenging because of its long atmospheric lifetime, strong transport-driven mixing, and uncertainties in existing emission inventories and observational constraints. Although recent advances in high-resolution emission inventories have improved representation of anthropogenic emissions, most studies remain emission-centered and do not fully account for atmospheric redistribution processes, leaving a critical gap in linking emissions to observed CO 2 concentrations. To address these limitations, this study develops an integrated source apportionment framework based on the GEOS-Chem model and a source shut-off approach to quantify the contributions of different sectors to atmospheric CO 2 . Our results show that electricity and heat production (40%) is the dominant contributor to global anthropogenic CO 2 , followed by industry and construction (27%), transport (23%), and residential sectors (10%). The power sector contribution shows an overall upward tendency, broadly associated with increasing electricity demand. Regional analyses indicate substantial spatial heterogeneity in source contributions, underscoring the importance of tailored mitigation strategies. In addition, terrestrial carbon sinks in high-latitude ecosystems and tropical forests provide a significant buffering capacity, although its relative contribution varies regionally.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.icee.2026.100012first seen 2026-07-10 05:31:14
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