大規模スポーツイベントにおけるカーボンフットプリントと大気汚染物質排出の関連付け:北京2022冬季オリンピックの証拠
Linking Carbon Footprints to Air-Pollutant Emissions from Mega Sporting Events: Evidence from the Beijing 2022 Winter Olympics (原題)
Xuefei Wang, Yongliang Luo, Buncha Wattana, Hua Zeng, Xiaohua Peng
🤖 gxceed AI 要約
日本語
北京2022冬季五輪の検証済みGHGインベントリ(71.4万t CO2e)を、NOx・SO2・PM2.5等の共排出にスクリーニング的に結びつけた研究。建設がCO2eの63%、NOxの約70%、PM2.5の76%を占め最大発生源であり続けた。グリーン電力活用は対策なし比でCO2eの31%を回避したが、グリーン証書なしではNOx回避は8%にとどまる。残余排出はオフセットで相殺されても大気汚染物質は削減されず、気候と大気質の共便益は設計段階で決まると結論づける。
English
This study links the verified GHG inventory of the Beijing 2022 Winter Olympics (713,788 t CO2e) to co-emitted NOx, SO2, PM2.5, CO and NMVOC via a screening-level emission-side assessment. Construction dominated, at 63% of CO2e, ~70% of NOx and 76% of PM2.5. Green electricity avoided 31% of no-measure emissions but only 8% of NOx without green certificates; offsets retired reduced no air pollutants. Climate and air-quality co-benefits are decided at the design stage.
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
大規模イベントのScope 3算定・オフセット依存への批判的視点を提供し、建設・調達段階の排出削減が実質的便益を生むことを示す。日本では東京2020や万博等のイベントGX、建設業のScope 3管理を考える上で参考になる。
In the global GX context
Adds to global disclosure scholarship by showing that carbon-footprint reporting and offsetting can mask co-pollutant impacts, reinforcing ISSB/CSRD expectations for Scope 3 and transition-plan credibility over offset reliance. Relevant to event organizers and construction supply chains worldwide.
👥 読者別の含意
🔬研究者:炭素会計と大気質影響を統合するスクリーニング手法と不確実性分析の枠組みを参考にできる。
🏢実務担当者:イベント・建設調達のScope 3管理で、オフセットより設計段階の資材・機械選択が実効的だと示唆される。
🏛政策担当者:大規模イベントの環境報告で、炭素だけでなく共排出汚染物質の開示を求める根拠になりうる。
📄 Abstract(原文)
Mega sporting events report carbon footprints, but rarely describe the air pollutants that accompany them. This study links the verified greenhouse-gas inventory of the Beijing 2022 Winter Olympics (713,788 t CO2e, 2016–2022) to co-emitted NOx, SO2, PM2.5, CO and NMVOC in a screening-level, emission-side assessment using eight emission carriers with Chinese pollutant-to-CO2 ratios, Shapley attribution, and Monte Carlo and Sobol analyses. Construction accounted for 63% of the CO2e, an estimated 70% of the 1335 t of NOx, and 76% of the 279 t of PM2.5, remaining the largest NOx source in 99.9–100% of uncertainty draws and under alternative attributions. The measures taken, chiefly the employment of green electricity, avoided 31% of no-measure emissions and 18% of NOx under market-based accounting, but only 8% of NOx if green certificates were not used. Under literature-based assumptions, eight additional levers could have cut CO2e by 46% (41–53%) and NOx by 49%; zero-emission construction machinery avoids the most NOx per tonne of CO2. A residual of 384,375 t would remain; the offsets retired (2.4 times the emissions) reduced no air pollutants. For construction-dominated events, such as this pandemic-era edition, climate- and air-quality co-benefits are decided largely at the design stage, through materials and machinery, rather than by offsetting.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/atmos17111072first seen 2026-11-01 05:04:02 · last seen 2026-11-06 05:00:05
- semanticscholar https://doi.org/10.3390/atmos17111072first seen 2026-11-04 05:41:29 · last seen 2026-11-06 05:35:40
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