Article
Astronomy & Astrophysics
Dominika M. Szczepanik, Iwona S. Stachlewska, Eleni Tetoni, Dietrich Althausen
Summary: On June 29-30, 2019, a huge amount of mineral dust from North Africa was forecasted to be transported to Poland, resulting in a unique dust event observed by lidar in Warsaw. The analyses conducted on the dust properties evolution revealed different characteristics of fine and coarse mode dust particles during the event, providing valuable data for future research and comparative studies.
EARTH AND SPACE SCIENCE
(2021)
Article
Astronomy & Astrophysics
C. Peest, R. Siebenmorgen, F. Heymann, T. Vannieuwenhuyse, M. Baes
Summary: We present a general framework for implementing and testing the polarization of radiation due to scattering, dichroic extinction, and birefringence of aligned spheroidal dust grains in 3D Monte Carlo radiative transfer codes. We derive a methodology for solving the radiative transfer equation governing the changes of the Stokes parameters in dust-enshrouded objects. Using the Muller matrix and the extinction, scattering, linear, and circular polarization cross sections of spheroidal grains, we compute changes in the polarization state of light.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Environmental Sciences
Manisha Mehra, Sujan Shrestha, A. P. Krishnakumar, Meghan Guagenti, Claire E. Moffett, Sarah Guberman VerPloeg, Melinda A. Coogan, Mukesh Rai, Rajesh Kumar, Elisabeth Andrews, James P. Sherman, James H. Flynn Iii, Sascha Usenko, Rebecca J. Sheesley
Summary: In June 2020, record levels of Saharan dust were transported across the Atlantic Ocean, impacting air quality in the Caribbean Basin and the United States. Satellite images and ground-based monitoring stations were used to observe the transport and surface impacts of the Saharan dust. The study characterized the Saharan dust event using comprehensive satellite observations and in-situ measurements.
ATMOSPHERIC ENVIRONMENT
(2023)
Article
Optics
Yongkai Wang, Zhongwei Huang, Tian Zhou, Jianrong Bi, Jinsen Shi
Summary: Bioaerosols play a significant role in climate change and ecological environment variation. In this study, a lidar system was used to investigate the characteristics of atmospheric bioaerosols near dust sources in northwest China. The findings show that the lidar system is capable of detecting the strong fluorescence signal emitted by dust aerosols, enhancing the ability of laser remote sensing for real-time detection of bioaerosols in the atmosphere.
Article
Environmental Sciences
Karin Ardon-Dryer, Mary C. Kelley
Summary: Dust events are an important and complex part of the atmospheric system. The frequency of dust events in the Southern High Plains of West Texas has increased in the past two decades, but their impact on air quality is still unclear. The lack of monitoring stations and information on different particle sizes and distributions has contributed to the uncertainty. Using the AEROS unit, researchers compared three different dust events and found that the impact of convective dust events on air quality is underestimated with the current hourly basis method.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Murat Altintas, Serdal Arslan
Summary: The study introduces a novel electrostatic cleaning scheme which proves to be more cost-efficient and effective than existing methods, particularly suitable for applications like solar power plants.
APPLIED SCIENCES-BASEL
(2021)
Article
Astronomy & Astrophysics
R. Gomez-Herrero, D. Pacheco, A. Kollhoff, F. Espinosa Lara, J. L. Freiherr von Forstner, N. Dresing, D. Lario, L. Balmaceda, V Krupar, O. E. Malandraki, A. Aran, R. Bucik, A. Klassen, K-L Klein, I Cernuda, S. Eldrum, H. Reid, J. G. Mitchell, G. M. Mason, G. C. Ho, J. Rodriguez-Pacheco, R. F. Wimmer-Schweingruber, B. Heber, L. Berger, R. C. Allen, N. P. Janitzek, M. Laurenza, R. De Marco, N. Wijsen, Y. Y. Kartavykh, W. Droge, T. S. Horbury, M. Maksimovic, C. J. Owen, A. Vecchio, X. Bonnin, O. Kruparova, D. Pisa, J. Soucek, P. Louarn, A. Fedorov, H. O'Brien, V Evans, V Angelini, P. Zucca, M. Prieto, S. Sanchez-Prieto, A. Carrasco, J. J. Blanco, P. Parra, O. Rodriguez-Polo, C. Martin, J. C. Terasa, S. Boden, S. R. Kulkarni, A. Ravanbakhsh, M. Yedla, Z. Xu, G. B. Andrews, C. E. Schlemm, H. Seifert, K. Tyagi, W. J. Lees, J. Hayes
Summary: Solar Orbiter identified the first near-relativistic solar electron events during its cruise phase through in situ measurements, investigating the solar origins and interplanetary transport conditions of these particles using multiple observational methods. The study revealed diverse time profiles and pitch-angle distributions of the electron events, indicating potential different source locations and magnetic connectivity.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
A. Kouloumvakos, G. M. Mason, G. C. Ho, R. C. Allen, Robert F. Wimmer-Schweingruber, A. P. Rouillard, J. Rodriguez-Pacheco
Summary: Observations of Solar Energetic Particles using the Suprathermal Ion Spectrograph on the Solar Orbiter mission reveal extended time periods of high He-3 abundance, typically lasting seven days and coinciding with changes in the spacecraft's magnetic connection to active regions.
ASTROPHYSICAL JOURNAL
(2023)
Article
Environmental Sciences
Rosa Delia Garcia, Omaira Elena Garcia, Emilio Cuevas-Agullo, Africa Barreto, Victoria Eugenia Cachorro, Carlos Marrero, Fernando Almansa, Ramon Ramos, Mario Po
Summary: A multidisciplinary study on the effects of a volcanic plume from the eruption on the island of La Palma was conducted. The study estimated the spectral direct radiative forcing and efficiency using solar radiation measurements. It found that although the volcanic aerosols had a higher direct radiative forcing than the dust events, their efficiency was lower.
Article
Environmental Sciences
Kyriakoula Papachristopoulou, Ilias Fountoulakis, Antonis Gkikas, Panagiotis G. Kosmopoulos, Panagiotis T. Nastos, Maria Hatzaki, Stelios Kazadzis
Summary: The study quantifies the direct effects of atmospheric aerosols on surface solar irradiance and analyzes their impacts on solar energy in the Mediterranean Basin, North Africa, and the Middle East. The results show that dust contributes significantly to the overall attenuation of aerosols, and extreme dust episodes result in significant attenuation of solar irradiance. Additionally, using different aerosol and dust inputs from the CAMS dataset underestimates the radiative effects compared to the MIDAS dataset.
Article
Astronomy & Astrophysics
R. Bucik, G. M. Mason, N. V. Nitta, V. Krupar, L. Rodriguez, G. C. Ho, S. T. Hart, M. A. Dayeh, J. Rodriguez-Pacheco, R. Gomez-Herrero, R. F. Wimmer-Schweingruber
Summary: We observed six recurrent solar energetic particle injections at around 0.5 au from March 3 to 6 in 2022 using Solar Orbiter. Five of these injections were associated with jets originating from a plage near a large sunspot in active region 12 957. Injections with high He-3 and Fe enrichments showed large jets, while injections with no or lower enrichments showed minor jets. The event with the highest enrichment also exhibited a more compact configuration of the underlying photospheric magnetic field. Extreme-ultraviolet images from Solar Orbiter revealed intersecting loops at the base of jets not visible from 1 au, which may be a precondition for the recurrent events.
ASTRONOMY & ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
G. M. Mason, G. C. Ho, R. C. Allen, Z. G. Xu, N. P. Janitzek, J. L. Freiherr von Forstner, A. Kohllhoff, D. Pacheco, J. Rodriguez-Pacheco, R. F. Wimmer-Schweingruber, G. Bruce Andrews, C. E. Schlemm, H. Seifert, K. Tyagi, W. J. Lees, J. Hayes, R. Gomez-Herrero, M. Prieto, S. Sanchez-Prieto, F. Espinosa Lara, I Cernuda, P. Parra Espada, O. Rodriguez Polo, A. Martinez Hellin, C. Martin, S. Boettcher, L. Berger, J. C. Terasa, S. Boden, S. R. Kulkarni, A. Ravanbakhsh, M. Yedla, S. Eldrum, R. Elftmann, P. Kuehl
Summary: This study presents the results of energetic particle observations conducted by the Solar Orbiter spacecraft in the inner heliosphere. The spectra during quiet periods showed transitions, with large uncertainties in radial dependence but consistent with a small gradient. During the super-quiet interval, the higher energy components remained stable, while the low energy He-4 spectrum exhibited a transition.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Meteorology & Atmospheric Sciences
Pedro Salvador, Jorge Pey, Noemi Perez, Xavier Querol, Begona Artinano
Summary: This study analyzed African dust outbreaks in the Iberian Peninsula and the Balearic Islands from 1948 to 2020 using global reanalysis dataset, and found that air masses of African origin significantly enhanced certain thermodynamic variables, resulting in increased dust load.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2022)
Review
Environmental Sciences
Jasper F. Kok, Trude Storelvmo, Vlassis A. Karydis, Adeyemi A. Adebiyi, Natalie M. Mahowald, Amato T. Evan, Cenlin He, Danny M. Leung
Summary: This Review summarizes the interactions and impacts of dust on the global climate and climate change. Dust affects the energy budget of Earth through interactions with radiation, clouds, atmospheric chemistry, the cryosphere and biogeochemistry. The net radiative effect of dust is -0.2 +/- 0.5 W m(-)(2), indicating a cooling effect on climate.
NATURE REVIEWS EARTH & ENVIRONMENT
(2023)
Article
Astronomy & Astrophysics
Ling Chen, Bing Ma, Dejin Wu, Guoqing Zhao, Jianfei Tang, Stuart D. Bale
Summary: In this study, the authors analyzed a typical event of interplanetary (IP) type IIIb bursts observed by the Parker Solar Probe (PSP) and found that electron cyclotron maser (ECM) emission may play an important role in the excitation mechanism of the IP type IIIb burst, with the formation of fine striae structure possibly attributed to the modulation of Alfven waves on the growth rate of the ECM instability.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
M. Wendisch, M. Brueckner, S. Crewell, A. Ehrlich, J. Notholt, C. Luepkes, A. Macke, J. P. Burrows, A. Rinke, J. Quaas, M. Maturilli, V. Schemann, M. D. Shupe, E. F. Akansu, C. Barrientos-Velasco, K. Baerfuss, A-M Blechschmidt, K. Block, I. Bougoudis, H. Bozem, C. Boeckmann, A. Bracher, H. Bresson, L. Bretschneider, M. Buschmann, D. G. Chechin, J. Chylik, S. Dahlke, H. Deneke, K. Dethloff, T. Donth, W. Dorn, R. Dupuy, K. Ebell, U. Egerer, R. Engelmann, O. Eppers, R. Gerdes, R. Gierens, I. V. Gorodetskaya, M. Gottschalk, H. Griesche, V. M. Gryanik, D. Handorf, B. Harm-Altstaedter, J. Hartmann, M. Hartmann, B. Heinold, A. Herber, H. Herrmann, G. Heygster, I. Hoeschel, Z. Hofmann, J. Hoelemann, A. Huenerbein, S. Jafariserajehlou, E. Jaekel, C. Jacobi, M. Janout, F. Jansen, O. Jourdan, Z. Juranyi, H. Kalesse-Los, T. Kanzow, R. Kaethner, L. L. Kliesch, M. Klingebiel, E. M. Knudsen, T. Kovacs, W. Koertke, D. Krampe, J. Kretzschmar, D. Kreyling, B. Kulla, D. Kunkel, A. Lampert, M. Lauer, L. Lelli, A. von Lerber, O. Linke, U. Loehnert, M. Lonardi, S. N. Losa, M. Losch, M. Maahn, M. Mech, L. Mei, S. Mertes, E. Metzner, D. Mewes, J. Michaelis, G. Mioche, M. Moser, K. Nakoudi, R. Neggers, R. Neuber, T. Nomokonova, J. Oelker, I. Papakonstantinou-Presvelou, F. Paetzold, V. Pefanis, C. Pohl, M. van Pinxteren, A. Radovan, M. Rhein, M. Rex, A. Richter, N. Risse, C. Ritter, P. Rostosky, V. V. Rozanov, E. Ruiz Donoso, P. Saavedra Garfias, M. Salzmann, J. Schacht, M. Schaefer, J. Schneider, N. Schnierstein, P. Seifert, S. Seo, H. Siebert, M. A. Soppa, G. Spreen, I. S. Stachlewska, J. Stapf, F. Stratmann, I. Tegen, C. Viceto, C. Voigt, M. Vountas, A. Walbroel, M. Walter, B. Wehner, H. Wex, S. Willmes, M. Zanatta, S. Zeppenfeld
Summary: The (AC)(3) project, established in 2016, collected a wealth of data on the physical, chemical, and meteorological properties of the Arctic atmosphere, cryosphere, and upper ocean. Short-term changes and long-term trends in Arctic climate parameters have been identified, such as increased atmospheric moistening, regional storm activities, winter warming in specific regions, and decreasing sea ice thickness and snow depth on sea ice. The project also made advancements in atmospheric-ocean and radiative transfer models, and discovered local marine/biogenic sources for cloud condensation nuclei and ice nucleating particles. Cross-cutting activities are being developed to further synthesize the results and answer key questions.
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY
(2023)
Article
Geosciences, Multidisciplinary
David M. Romps, Katie Latimer, Qindan Zhu, Tina Jurkat-Witschas, Christoph Mahnke, Thara Prabhakaran, Ralf Weigel, Manfred Wendisch
Summary: According to the aerosol invigoration hypothesis, higher aerosol concentrations in polluted air contribute to stronger storms. The warm-phase invigoration theory suggests that polluted cloudy updrafts condense water vapor onto liquid drops more easily, leading to faster release of latent heat and thus higher buoyancies and updraft speeds. However, in situ observations of warm-phase cloudy updrafts over the Amazon indicate that typical water-vapor supersaturations are around 0.2%, significantly lower than the required values for warm-phase invigoration to have a meaningful impact.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Correction
Multidisciplinary Sciences
Mario Mech, Andre Ehrlich, Andreas Herber, Christof Lupkes, Manfred Wendisch, Sebastian Becker, Yvonne Boose, Dmitry Chechin, Susanne Crewell, Regis Dupuy, Christophe Gourbeyre, Joerg Hartmann, Evelyn Jakel, Olivier Jourdan, Leif-Leonard Kliesch, Marcus Klingebiel, Birte Solveig Kulla, Guillaume Mioche, Manuel Moser, Nils Risse, Elena Ruiz-Donoso, Michael Schafer, Johannes Stapf, Christiane Voigt
Article
Multidisciplinary Sciences
J. M. Katich, E. C. Apel, I. Bourgeois, C. A. Brock, T. P. Bui, P. Campuzano-Jost, R. Commane, B. Daube, M. Dollner, M. Fromm, K. D. Froyd, A. J. Hills, R. S. Hornbrook, J. L. Jimenez, A. Kupc, K. D. Lamb, K. McKain, F. Moore, D. M. Murphy, B. A. Nault, J. Peischl, A. E. Perring, D. A. Peterson, E. A. Ray, K. H. Rosenlof, T. Ryerson, G. P. Schill, J. C. Schroder, B. Weinzierl, C. Thompson, C. J. Williamson, S. C. Wofsy, P. Yu, J. P. Schwarz
Summary: Pyrocumulonimbus (pyroCb) are wildfire-generated convective clouds that can inject smoke directly into the stratosphere. In situ measurements of pyroCb smoke reveal its distinctive and exceptionally stable aerosol properties and define the long-term influence of pyroCb activity on the stratospheric aerosol budget. Analysis of 13 years of airborne observations shows that pyroCb are responsible for 10 to 25% of the black carbon and organic aerosols in the present-day lower stratosphere, with similar impacts in both the North and South Hemispheres. These results suggest that, should pyroCb increase in frequency and/or magnitude in future climates, they could generate dominant trends in stratospheric aerosol.
Correction
Multidisciplinary Sciences
Mario Mech, Andre Ehrlich, Andreas Herber, Christof Luepkes, Manfred Wendisch, Sebastian Becker, Yvonne Boose, Dmitry Chechin, Susanne Crewell, Regis Dupuy, Christophe Gourbeyre, Joerg Hartmann, Evelyn Jaekel, Olivier Jourdan, Leif-Leonard Kliesch, Marcus Klingebiel, Birte Solveig Kulla, Guillaume Mioche, Manuel Moser, Nils Risse, Elena Ruiz-Donoso, Michael Schaefer, Johannes Stapf, Christiane Voigt
Article
Geosciences, Multidisciplinary
Benjamin Kirbus, Sofie Tiedeck, Andrea Camplani, Jan Chylik, Susanne Crewell, Sandro Dahlke, Kerstin Ebell, Irina Gorodetskaya, Hannes Griesche, Doerthe Handorf, Ines Hoeschel, Melanie Lauer, Roel Neggers, Janna Rueckert, Matthew D. Shupe, Gunnar Spreen, Andreas Walbroel, Manfred Wendisch, Annette Rinke
Summary: Distinct events of warm and moist air intrusions from mid-latitudes have significant impacts on the Arctic climate system. A record-breaking warm air intrusion observed during the MOSAiC expedition in mid-April 2020 is analyzed using Eulerian and Lagrangian frameworks. The intrusion is characterized by two distinct pathways, Siberian and Atlantic, and it has a strong positive effect on the surface energy balance. Model experiments show that moisture availability has a limited impact on the liquid water path in the central Arctic, while increasing cloud condensation nuclei concentrations enhance cloud water content and deepen the atmospheric boundary layer.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Environmental Sciences
Zsofia Juranyi, Marco Zanatta, Marianne T. Lund, Bjorn H. Samset, Ragnhild B. Skeie, Sangeeta Sharma, Manfred Wendisch, Andreas Herber
Summary: Black carbon is a key driving factor for rapid Arctic climate change. Our knowledge about black carbon in the Arctic is limited, with only a few ground stations and aircraft observations providing data. Aircraft campaigns over a period of nine years revealed that black carbon mass concentrations are four times higher in spring than in summer, with greater inter-annual and geographic variability in spring. The size distribution of black carbon remains constant between seasons.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Environmental Sciences
Bruna A. Holanda, Marco A. Franco, David Walter, Paulo Artaxo, Samara Carbone, Yafang Cheng, Sourangsu Chowdhury, Florian Ditas, Martin Gysel-Beer, Thomas Klimach, Leslie A. Kremper, Ovid O. Krueger, Jost Lavric, Jos Lelieveld, Chaoqun Ma, Luiz A. T. Machado, Robin L. Modini, Fernando G. Morais, Andrea Pozzer, Jorge Saturno, Hang Su, Manfred Wendisch, Stefan Wolff, Mira L. Poehlker, Meinrat O. Andreae, Ulrich Poeschl, Christopher Poehlker
Summary: Smoke from biomass combustion in Africa contributes significantly to black carbon concentrations in the central Amazon, especially during the rainy season. The influence of African smoke extends across the entire Amazon, with the strongest impact on the eastern basin. These findings suggest that African smoke has historically played a crucial role in the development of the Amazon forest ecosystem.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Torsten Seelig, Felix Mueller, Matthias Tesche
Summary: This study investigates the lifetime and temporal evolution of physical properties of trade-wind cumuli based on observations from the GOES-16 satellite. The results show that shallow marine cumuli live longer when they cover a larger surface area and show higher cloud optical thickness.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Christian Pilz, Michael Lonardi, Ulrike Egerer, Holger Siebert, Andre Ehrlich, Andrew J. Heymsfield, Carl G. Schmitt, Matthew D. Shupe, Birgit Wehner, Manfred Wendisch
Summary: The BELUGA instrument was deployed during the MOSAiC expedition to study the cloudy Arctic atmospheric boundary layer above the sea ice. It collected 66 profile observations, including atmospheric parameters, radiation measurements, aerosol properties, and cloud particle images.
Article
Geosciences, Multidisciplinary
Goutam Choudhury, Matthias Tesche
Summary: In this study, we present a global multiyear height-resolved data set of aerosol-type-specific cloud condensation nuclei concentrations (n(CCN)) estimated from the CALIPSO satellite's lidar data. The data set covers a large temporal and spatial range and provides valuable information about aerosol-cloud interactions. The complete data set can be accessed at https://doi.org/10.1594/PANGAEA.956215 (Choudhury and Tesche, 2023).
EARTH SYSTEM SCIENCE DATA
(2023)
Article
Environmental Sciences
Sebastian Becker, Andre Ehrlich, Michael Schaefer, Manfred Wendisch
Summary: This study analyzes the cloud radiative effect (CRE) obtained from three airborne campaigns in the Arctic. The results show differences in CRE between sea ice and open-ocean surfaces, with clouds having a cooling effect over open ocean and a warming effect over sea ice. However, the warming effect neutralizes during mid-summer.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Environmental Sciences
Dmitry G. Chechin, Christof Luepkes, Joerg Hartmann, Andre Ehrlich, Manfred Wendisch
Summary: This study investigates the role of clouds in the Arctic amplification process, focusing on cloud processes such as radiative and turbulent fluxes. The analysis of aircraft observation data reveals the vertical structure of turbulence in the cloudy boundary layer. The study shows that cloud-top cooling can be a significant source of turbulent kinetic energy in weak wind conditions.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Meteorology & Atmospheric Sciences
Andre Ehrlich, Martin Zoeger, Andreas Giez, Vladyslav Nenakhov, Christian Mallaun, Rolf Maser, Timo Roeschenthaler, Anna E. Luebke, Kevin Wolf, Bjorn Stevens, Manfred Wendisch
Summary: The HALO research aircraft's instrumentation is expanded by the BACARDI to measure radiative energy budget. Two sets of pyranometers and pyrgeometers are installed to measure solar and thermal-infrared irradiances. The BACARDI measurements show that dynamic thermal effects can be corrected by parameterizing the rate of change of radiometer sensor temperatures. The measurements also demonstrate the reliability of common geometric attitude correction of solar downward irradiance.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2023)
Article
Environmental Sciences
Yunfan Liu, Hang Su, Siwen Wang, Chao Wei, Wei Tao, Mira L. Poehlker, Christopher Poehlker, Bruna A. Holanda, Ovid O. Krueger, Thorsten Hoffmann, Manfred Wendisch, Paulo Artaxo, Ulrich Poeschl, Meinrat O. Andreae, Yafang Cheng
Summary: Nucleation and condensation of BVOCs play a crucial role in aerosol formation, but their contribution to upper-tropospheric aerosols is uncertain. In this study, new schemes describing these processes are developed and implemented into the WRF-Chem model. The results show that the new schemes significantly improve the simulation of cloud condensation nuclei (CCN) concentrations in the upper troposphere over the Amazon Basin. The findings highlight the importance of biosphere-atmosphere coupling in regulating upper-tropospheric aerosol concentrations and its potential role in anthropogenic climate change.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)