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Past and Potential Drivers of the Hydroxyl Radical (OH), With Implications for Warming and Public Health in a Future Hydrogen Economy
Past and Potential Drivers of the Hydroxyl Radical (OH), With Implications for Warming and Public Health in a Future Hydrogen Economy
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202102959
- ISBN
- 9798280749375
- DDC
- 551.5
- 저자명
- Chua, Glen.
- 서명/저자
- Past and Potential Drivers of the Hydroxyl Radical (OH), With Implications for Warming and Public Health in a Future Hydrogen Economy
- 발행사항
- [Sl] : Princeton University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 196 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
- 주기사항
- Advisor: Horowitz, Larry W.
- 학위논문주기
- Thesis (Ph.D.)--Princeton University, 2025.
- 초록/해제
- 요약The hydroxyl radical (OH) is an atmospheric detergent, removing air pollutants and near-term climate forcers (NTCFs) such as ozone (O3) precursors as well as greenhouse gases like methane (CH4). Thus, understanding how it is changing and responding to its various drivers is important for air quality and climate.In the historical (1980-2014) CMIP6 simulation, we find that OH has increased in the Geophysical Fluid Dynamics Laboratory (GFDL) AM4.1 CCM mostly driven by increasing nitrogen oxide (NOx) emissions. In future CMIP6 scenarios, across multiple CCMS, we find that, in a high emission scenario (SSP3-7.0), while [OH] declines and CH4 lifetime increases due to the dominant chemical effects of changing NTCF and CH4, future climate change has a positive impact on OH and therefore a negative impact of CH4 lifetime, leading to a negative CH4-related climate feedback. Also, while air pollution controls alone further exacerbates the OH decline in SSP3-7.0, CH4 mitigation can effectively reverse the OH decline. These results suggest potential climate trade-offs from solely targeting air pollution and highlight the importance of CH4 mitigation to maximize future climate and air quality benefits.One potential OH driver is increasing H2 emissions from a future H2 economy. H2 and CH4 have similar composition and climate impacts, primarily because they share the same OH chemical sink. Hence, we find that CH4 mitigation can offset the impact of H2 leakage. In particular, the H2 warming impact is roughly a third that of CH4 per mass of emissions, and this stays relatively constant under a wide range of background CH4 emissions. Furthermore, when considering simultaneous changes in other NTCFs in a H2 economy, CH4 mitigation plays an important role in ensuring that there are net benefits to climate and air quality. We also find that, similar to CH4 emissions, H2 leakage increases surface O3, thus increasing O3-attributable deaths from cardiovascular and respiratory diseases, leading to increased economic cost. On a per-mass emission basis, H2 causes approximately half the health-related damages of CH4. These findings emphasize the key role of CH4 mitigation in offsetting unintended negative climate and health consequences of future H2 leakage.
- 일반주제명
- Atmospheric chemistry
- 일반주제명
- Atmospheric sciences
- 일반주제명
- Environmental health
- 일반주제명
- Climate change
- 일반주제명
- Public health
- 키워드
- Hydrogen
- 키워드
- Hydroxyl radical
- 키워드
- Methane
- 키워드
- Ozone
- 기타저자
- Princeton University Atmospheric and Oceanic Sciences
- 기본자료저록
- Dissertations Abstracts International. 86-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798280749375
■035 ▼a(MiAaPQ)AAI31770780
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a551.5
■1001 ▼aChua, Glen.▼0(orcid)0000-0002-6002-0957
■24510▼aPast and Potential Drivers of the Hydroxyl Radical (OH), With Implications for Warming and Public Health in a Future Hydrogen Economy
■260 ▼a[Sl]▼bPrinceton University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a196 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-12, Section: B.
■500 ▼aAdvisor: Horowitz, Larry W.
■5021 ▼aThesis (Ph.D.)--Princeton University, 2025.
■520 ▼aThe hydroxyl radical (OH) is an atmospheric detergent, removing air pollutants and near-term climate forcers (NTCFs) such as ozone (O3) precursors as well as greenhouse gases like methane (CH4). Thus, understanding how it is changing and responding to its various drivers is important for air quality and climate.In the historical (1980-2014) CMIP6 simulation, we find that OH has increased in the Geophysical Fluid Dynamics Laboratory (GFDL) AM4.1 CCM mostly driven by increasing nitrogen oxide (NOx) emissions. In future CMIP6 scenarios, across multiple CCMS, we find that, in a high emission scenario (SSP3-7.0), while [OH] declines and CH4 lifetime increases due to the dominant chemical effects of changing NTCF and CH4, future climate change has a positive impact on OH and therefore a negative impact of CH4 lifetime, leading to a negative CH4-related climate feedback. Also, while air pollution controls alone further exacerbates the OH decline in SSP3-7.0, CH4 mitigation can effectively reverse the OH decline. These results suggest potential climate trade-offs from solely targeting air pollution and highlight the importance of CH4 mitigation to maximize future climate and air quality benefits.One potential OH driver is increasing H2 emissions from a future H2 economy. H2 and CH4 have similar composition and climate impacts, primarily because they share the same OH chemical sink. Hence, we find that CH4 mitigation can offset the impact of H2 leakage. In particular, the H2 warming impact is roughly a third that of CH4 per mass of emissions, and this stays relatively constant under a wide range of background CH4 emissions. Furthermore, when considering simultaneous changes in other NTCFs in a H2 economy, CH4 mitigation plays an important role in ensuring that there are net benefits to climate and air quality. We also find that, similar to CH4 emissions, H2 leakage increases surface O3, thus increasing O3-attributable deaths from cardiovascular and respiratory diseases, leading to increased economic cost. On a per-mass emission basis, H2 causes approximately half the health-related damages of CH4. These findings emphasize the key role of CH4 mitigation in offsetting unintended negative climate and health consequences of future H2 leakage.
■590 ▼aSchool code: 0181.
■650 4▼aAtmospheric chemistry
■650 4▼aAtmospheric sciences
■650 4▼aEnvironmental health
■650 4▼aClimate change
■650 4▼aPublic health
■653 ▼aHealth-related damages
■653 ▼aHydrogen
■653 ▼aHydroxyl radical
■653 ▼aMethane
■653 ▼aOzone
■690 ▼a0371
■690 ▼a0725
■690 ▼a0470
■690 ▼a0404
■690 ▼a0573
■71020▼aPrinceton University▼bAtmospheric and Oceanic Sciences.
■7730 ▼tDissertations Abstracts International▼g86-12B.
■790 ▼a0181
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356591▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


