Global Soil Nitrous Acid (HONO) Emission Has Aggravated PM2.5 Pollution and Health Risks over the Last Century.
過去1世紀における土壌亜硝酸（HONO）排出の増加がPM2.5汚染と健康リスクを悪化させた (AI 翻訳)
Rui Li, Qunbo Fan, Yumeng Shao, Yubing Shen, Haroon Haider, Dianming Wu, Yuanzhi Yao, Gehui Wang
🤖 gxceed AI 要約
日本語
本研究は、プロセスベースモデルを用いて1901～2015年の土壌HONO排出量を推定し、PM2.5濃度と健康影響への寄与を定量化した。温暖化と肥料使用増加で排出量が2.2→4.7Tg Nに増加し、HONO由来PM2.5により約11.3万人の超過死亡が生じたと推計された。将来的に人為起源排出が減少する中、土壌HONO対策の重要性が示唆された。
English
This study used a process-based model (LPJ-GUESS) to estimate global soil HONO emissions from 1901 to 2015 and their contribution to PM2.5 and health impacts. Emissions rose from 2.2 to 4.7 Tg N due to warming and fertilizer use. Soil HONO-driven PM2.5 was associated with ~113,000 annual mortalities. As anthropogenic emissions decline, controlling soil HONO becomes more critical for air quality and public health.
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
土壌からのHONO排出が大気質に与える長期的影響を定量化した点で、日本のPM2.5対策や農業由来排出削減の政策立案に示唆を与える。ただし、本論文はグローバルスケールの研究であり、日本の事情に特化した知見ではない。
In the global GX context
This paper provides a long-term global perspective on soil HONO emissions and their contribution to PM2.5, relevant for climate and air quality policies. While not focused on corporate disclosure, it informs the scientific basis for environmental regulations and health impact assessments globally.
👥 読者別の含意
🔬研究者:Provides a new module and long-term estimates for soil HONO emissions, useful for air quality and climate modeling research.
🏢実務担当者:Not directly applicable; offers background on a future regulatory area (soil emissions) but no immediate action items for sustainability teams.
🏛政策担当者:Highlights the growing role of soil HONO in PM2.5, suggesting that future air quality policies may need to address agricultural and soil management practices.
📄 Abstract（原文）
Soil nitrous acid (HONO) emissions represent an important source of atmospheric reactive nitrogen, significantly influencing air quality and climate change. However, the long-term global patterns of soil HONO emissions and their contributions to fine particulate matter (PM2.5) and its key components remain poorly understood. In this study, we developed a new module within a process-based model (LPJ-GUESS) to estimate global soil HONO emissions across all major land-use types over the past century and also quantified their impacts on PM2.5 and associated health outcomes. Our model demonstrated robust performance in estimating global soil HONO emissions (R2 = 0.91). The results revealed that global warming and increased fertilizer use have driven a substantial rise in soil HONO emissions, escalating from 2.2 Tg of N in 1901 to 4.7 Tg of N in 2015. Then, the GEOS-Chem model simulations suggested that the contribution of soil HONO emission to the global average concentrations of PM2.5, sulfate (SO42-), nitrate (NO3-), ammonium (NH4+), black carbon (BC), and organic aerosol (OA) reached 0.015 (0.3% (range: 0-6%) accounting for all-source concentration), 0.003 (0.6% (0-7%)), 0.008 (3.4% (0-52%)), 0.002 (1% (0-26%)), ∼0, and 0.002 (0.6% (0-4%)) μg/m3 in 2015, respectively. Notably, exposure to soil HONO-driven PM2.5 was associated with an estimated 113,137 global mortalities. As anthropogenic emissions continue to decline in the future, targeted measures to mitigate soil HONO emissions will become increasingly critical to reducing their adverse effects on air pollution and public health.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1021/acs.est.5c08207first seen 2026-06-29 09:06:00
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