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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
  • Aerosol effects on convective storms under pseudo-global warming conditions: insights from case studies in Germany
    Aerosol effects on convective storms under pseudo-global warming conditions: insights from case studies in Germany Lina Lucas, Christian Barthlott, Corinna Hoose, and Peter Knippertz Atmos. Chem. Phys., 25, 18527–18548, https://doi.org/10.5194/acp-25-18527-2025, 2025 We studied how climate change and cleaner air could affect severe storms in Germany. Using high-resolution weather simulations of past supercell storms under warmer and less polluted conditions, we found that storms may become more intense, with heavier rainfall and larger hailstones. These changes suggest an increased risk of damage in the future. Our findings help improve understanding of how extreme storms may evolve in a changing climate.

  • Constraining urban fossil fuel CO2 emissions in Seoul using combined ground and satellite observations with Bayesian inverse modelling
    Constraining urban fossil fuel CO2 emissions in Seoul using combined ground and satellite observations with Bayesian inverse modelling Sojung Sim and Sujong Jeong Atmos. Chem. Phys., 25, 18509–18526, https://doi.org/10.5194/acp-25-18509-2025, 2025 This study develops a high-resolution inverse modeling framework that combines ground-based and satellite CO2 observations to improve urban emission estimates in Seoul. By integrating atmospheric data and transport models, the research reduces uncertainties in CO2 emissions and reveals spatial and temporal patterns. The method offers a valuable tool for supporting climate policies and can be applied to other cities for better emission verification.

  • Influence of secondary ice formation on tropical deep convective clouds simulated by the Unified Model
    Influence of secondary ice formation on tropical deep convective clouds simulated by the Unified Model Mengyu Sun, Paul J. Connolly, Paul R. Field, Declan L. Finney, and Alan M. Blyth Atmos. Chem. Phys., 25, 18549–18569, https://doi.org/10.5194/acp-25-18549-2025, 2025 We investigated how extra ice particles form inside tropical storm clouds and how they affect rainfall and sunlight reflection. By using a weather model, we found that these extra ice particles can change how clouds grow, reduce heat escaping to space, and slightly shift where rain falls. This helps improve how weather and climate models predict tropical storms.

  • Tropical tropospheric ozone trends (1998 to 2023): new perspectives from SHADOZ, IAGOS and OMI/MLS observations
    Tropical tropospheric ozone trends (1998 to 2023): new perspectives from SHADOZ, IAGOS and OMI/MLS observations Anne M. Thompson, Ryan M. Stauffer, Debra E. Kollonige, Jerald R. Ziemke, Bryan J. Johnson, Gary A. Morris, Patrick Cullis, María Cazorla, Jorge Andres Diaz, Ankie Piters, Igor Nedeljkovic, Truus Warsodikromo, Francisco Raimundo Silva, E. Thomas Northam, Patrick Benjamin, Thumeka Mkololo, Tshidi Machinini, Christian Félix, Gonzague Romanens, Syprose Nyadida, Jérôme Brioude, Stéphanie Evan, Jean-Marc Metzger, Ambun Dindang, Yuzaimi B. Mahat, Mohan Kumar Sammathuria, Norazura Binti Zakaria, Ninong Komala, Shin-Ya Ogino, Nguyen Thi Quyen, Francis S. Mani, Miriama Vuiyasawa, David Nardini, Matthew Martinsen, Darryl T. Kuniyuki, Katrin Müller, Pawel Wolff, and Bastien Sauvage Atmos. Chem. Phys., 25, 18475–18507, https://doi.org/10.5194/acp-25-18475-2025, 2025 Ozone profile trends from SHADOZ sondes and IAGOS aircraft show that ozone in the tropical free troposphere (FT) is not growing fast except over equatorial SE Asia. This agrees with HEGIFTOM (Van Malderen et al., 2025), Stauffer et al. (2024) and Gaudel et al. (2024) TOAR-II papers. Other findings are as follows: (1) our trends are independent of method (QR, MLR) and (2) sample number (SN) (i.e., SHADOZ sampling is sufficient), and (3) all ground-based trends constitute the gold standard for satellite-derived trends.

  • Why is height-dependent mixing observed in stratocumulus clouds?
    Why is height-dependent mixing observed in stratocumulus clouds? Zeen Zhu, Fan Yang, Steven Krueger, and Yangang Liu Atmos. Chem. Phys., 25, 18461–18474, https://doi.org/10.5194/acp-25-18461-2025, 2025 To better understand cloud behavior, we used model simulation to study how the air mix in clouds. Our results show that the pattern of mixing seen from aircraft measurements may not reflect the true mixing process happening inside clouds. This result suggests that care is needed when using aircraft data to study the cloud mixing process and that new ways of observing clouds could offer clearer insights.