Atmospheric Chemistry and Physics (ACP) is a not-for-profit international scientific journal dedicated to the publication and public discussion of high-quality studies investigating the Earth's atmosphere and the underlying chemical and physical processes. It covers the altitude range from the land and ocean surface up to the turbopause, including the troposphere, stratosphere, and mesosphere.
The main subject areas comprise atmospheric modelling, field measurements, remote sensing, and laboratory studies of gases, aerosols, clouds and precipitation, isotopes, radiation, dynamics, biosphere interactions, and hydrosphere interactions (for details see journal subject areas). The journal scope is focused on studies with important implications for our understanding of the state and behaviour of the atmosphere.
Transparent peer review for 20 years: for 20 years, Atmospheric Chemistry and Physics has been a pioneer in transparent peer review. Submitted preprints, reviews, and author replies are posted and permanently archived on the journal website. This unique approach ensures the highest levels of scientific transparency and integrity, as well as fair peer review for authors.
Solar irradiance varies with a period of approximately 11 years. Using a unique large chemistry–climate model dataset, we investigate the solar surface signal in the North Atlantic and European region and find that it changes over time, depending on the strength of the solar cycle. For the first time, we estimate the potential predictability associated with including realistic solar forcing in a model. These results may improve seasonal to decadal predictions of European climate.
Kevin Ohneiser, Albert Ansmann, Bernd Kaifler, Alexandra Chudnovsky, Boris Barja, Daniel A. Knopf, Natalie Kaifler, Holger Baars, Patric Seifert, Diego Villanueva, Cristofer Jimenez, Martin Radenz, Ronny Engelmann, Igor Veselovskii, and Félix Zamorano
We present and discuss 2 years of long-term lidar observations of the largest stratospheric perturbation by wildfire smoke ever observed. The smoke originated from the record-breaking Australian fires in 2019–2020 and affects climate conditions and even the ozone layer in the Southern Hemisphere. The obvious link between dense smoke occurrence in the stratosphere and strong ozone depletion found in the Arctic and in the Antarctic in 2020 can be regarded as a new aspect of climate change.
We investigated aerosol optical properties and the direct radiative effect (DRE) at an urban site in China before and during the COVID-19 lockdown. The total light extinction coefficient (bext) decreased under emission control measures; however, bext from biomass burning increased due to the undiminished need for residential cooking and heating. Biomass burning, rather than traffic-related emissions, became the largest positive effect contributor to aerosol DRE in the lockdown.
We use machine learning to quantify the meteorological drivers behind surface ozone variations in China between 2015 and 2019. Our novel approaches show improved performance when compared to previous analysis methods. We highlight that nonlinearity in driver relationships and the impacts of large-scale meteorological phenomena are key to understanding ozone pollution. Moreover, we find that almost half of the observed ozone trend between 2015 and 2019 might have been driven by meteorology.
Preprint under review for ACP(discussion: open, 0 comments)
The impact of molecular level surface chemistry for aerosol water-uptake and droplet growth is not well understood. In this work we show changes in molecular level surface chemistry can be measured and quantified. In addition, we develop a single-parameter model, representing changes in aerosol chemistry that can be used in global climate models to reduce the uncertainty in aerosol-cloud predictions.
Preprint under review for ACP(discussion: open, 0 comments)
We studied the diurnal and seasonal changes in the dispersion of radionuclides using a four-member ensemble based on FLEXPART and FLEXPAR-WRF. We found that simulations are affected by the spatio-temporal resolution of meteorological inputs, the seasonal and diurnal changes in meteorological conditions, and the simulation code of choice. The preparedness programs for potential nuclear accidents, the FLEXPART community, and radionuclide dispersion modelers may benefit from our findings.
Multiple cirrus clouds frequently occur over regions of deep convection in the tropics. Tropical convection has a strong diurnal pattern, with peaks in the afternoon to early evening, over the continents. Continuous micropulse lidar observations over a coastal station in the Indian monsoon region enable us, for the first time, to demonstrate a robust diurnal pattern of single and multiple cirrus occurrences, with peaks during the late afternoon and early morning hours, respectively.
07 Jul 2021–31 Dec 2024 | ACP co-editors | Coordinators: Astrid Kiendler-Scharr and Stefania Gilardoni | Co-organizers: Paolo Laj and Giulia Saponaro
Notice on current restrictions
To show our support for Ukraine and in accordance with current European sanctions, we have introduced a range of measures relevant to our open-access publications process.
All fees for papers from authors (first, corresponding, or contact authors) affiliated to Ukrainian institutions are automatically waived, regardless of if these papers are co-authored by scientists affiliated to Russian and/or Belarusian institutions. The only exception to the waiver for Ukrainian authors will be if the corresponding or contact authors are from a Russian and/or Belarusian institution, in that case the APCs are not waived.
Due to restrictions for authors from Russian and Belarusian institutions that are necessary to comply with European sanctions, we recommend any authors from institutions in these countries to contact us on email@example.com for more information.