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ACP - recent papers
Combined list of the recent articles of the journal Atmospheric Chemistry and Physics and the recent discussion forum Atmospheric Chemistry and Physics Discussions
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Impact of stratospheric intrusion on near-surface ozone over the Sichuan Basin in China driven by terrain forcing of Tibetan Plateau
Impact of stratospheric intrusion on near-surface ozone over the Sichuan Basin in China driven by terrain forcing of Tibetan Plateau Zhuozhi Shu, Fumo Yang, Guangming Shi, Yuqing Zhang, Yongjie Huang, Xinning Yu, Baiwan Pan, and Tianliang Zhao Atmos. Chem. Phys., 25, 15437–15451, https://doi.org/10.5194/acp-25-15437-2025, 2025 We targeted four stratospheric intrusion episodes to investigate the impacts of cross-layer transport of stratospheric O3 on the near-surface environmental atmosphere over Sichuan Basin and uncover multi-scale atmospheric circulation coupling mechanisms with the seasonally discrepant terrain effects of Tibetan Plateau. Results provided the critical insights into understanding of regional O3 pollution genesis with the exceptional natural sources contribution derived from the stratosphere.
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Measurement report: Unexpected high volatile organic compounds emission from vehicles on the Tibetan Plateau
Measurement report: Unexpected high volatile organic compounds emission from vehicles on the Tibetan Plateau Weichao Huang, Sihang Wang, Peng Cheng, Bingna Chen, Bin Yuan, Pengfei Yu, Haichao Wang, Nan Ma, Mei Li, and Keding Lu Atmos. Chem. Phys., 25, 15403–15414, https://doi.org/10.5194/acp-25-15403-2025, 2025 We studied vehicle emissions from ten 3000-meter tunnels on the Tibetan Plateau. Emissions of volatile organic compounds (VOCs) increase with elevation due to the evaporation of fuel oil from low pressure, unlike at lower elevations where tailpipe is predominant. This suggests that specific emission control measures are needed. This research aims to understand emissions at high altitudes and to guide cleaner transport.
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Variability in BVOC emissions and air quality impacts among urban trees in Montreal and Helsinki
Variability in BVOC emissions and air quality impacts among urban trees in Montreal and Helsinki Kaisa Rissanen, Juho Aalto, Jaana Bäck, Heidi Hellén, Toni Tykkä, and Alain Paquette Atmos. Chem. Phys., 25, 15415–15435, https://doi.org/10.5194/acp-25-15415-2025, 2025 Urban trees emit biogenic volatile organic compounds (BVOC) that affect air quality through the formation of ozone and particulate matter. Trees in Montreal and Helsinki did not emit more BVOCs than expected based on measurements from forest trees, but the emissions varied between individual trees and growth environments. Avoiding high-BVOC emitting tree species and management strategies that protect trees from BVOC-inducing stress factors would help minimise their negative air quality impacts.
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Evaluation of the EarthCARE Cloud Profiling Radar (CPR) Doppler velocity measurements using surface-based observations
Evaluation of the EarthCARE Cloud Profiling Radar (CPR) Doppler velocity measurements using surface-based observations Jiseob Kim, Pavlos Kollias, Bernat Puigdomènech Treserras, Alessandro Battaglia, and Ivy Tan Atmos. Chem. Phys., 25, 15389–15402, https://doi.org/10.5194/acp-25-15389-2025, 2025 The EarthCARE satellite’s Cloud Profiling Radar (CPR) can now measure how fast particles fall within clouds from space. In this study, we compared these new satellite measurements with ground-based radar data and found that, after proper corrections, the CPR gives reliable results, especially in ice clouds. This means scientists can confidently use EarthCARE data to better understand clouds and improve weather and climate predictions.
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Deciphering dust provenance and transport pathways across Northern China's source-sink systems
Deciphering dust provenance and transport pathways across Northern China's source-sink systems Lanying Han, Zhenyu Zhang, Aimin Liang, Junfeng Lu, Zhibao Dong, and Zhengcai Zhang Atmos. Chem. Phys., 25, 15343–15357, https://doi.org/10.5194/acp-25-15343-2025, 2025 Uncertainties persist in dust source apportionment for northern China's arid ecosystems. Geochemical fingerprinting of April 2023 airborne dust from six deserts reveals Taklimakan/Gurbantunggut as primary sources. Alxa Plateau’s elevation (>1500 m) filters dust to Lanzhou/Mu Us, enabling recycling. Spatial variations show Lanzhou’s dust: 26 % Gurbantunggut, 18 % Taklimakan; Mu Us: 28 % Alxa, 22 % Taklimakan. Elevation barriers and sediment recycling modulate East Asian dust dynamics.