Article
Meteorology & Atmospheric Sciences
Christopher Maloney, Brian Toon, Charles Bardeen, Pengfei Yu, Karl Froyd, Jennifer Kay, Sarah Woods
Summary: We modified the CARMA sectional ice microphysical model by adding interactive nucleation of sulfates and heterogeneous nucleation onto dust for a more comprehensive representation of ice nucleation. In our simulations, cirrus clouds primarily nucleate via homogeneous nucleation on aqueous sulfate aerosols at altitudes above 7 km where temperatures fall below 240 K, while heterogeneous nucleation dominates below 7 km. Our model shows improved representation of in-cloud ice within mixed phase clouds in comparison to simulations with only homogeneous ice nucleation.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Meteorology & Atmospheric Sciences
Vladan Vuckovic, Dragana Vujovic, Aleksandar Jovanovic
Summary: This paper investigates the scavenging of submicron aerosol particles by cloud water, rainwater, and cloud ice nucleation. The study calculates the scavenging coefficients of different collection processes and tests their influence on the distribution of the aerosol particles. The results show that cloud water is the primary factor in reducing the number of aerosol particles in the air, while ice nucleation plays a significant role in reducing their total mass.
ATMOSPHERIC RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Diana L. Pereira, Ma Montserrat Silva, Rocio Garcia, Graciela B. Raga, Harry Alvarez-Ospina, Giovanni Carabali, Irma Rosas, Leticia Martinez, Eva Salinas, Sandra Hidalgo-Bonilla, Luis A. Ladino
Summary: This study found differences in ice nucleating abilities between tropical urban areas and rural regions, with the influence of human activities in cities contrasting with the impact of biological materials in rural sites. Bacteria and fungal propagules were consistently present in cloud water and rainwater samples. INPs concentrations in rainwater samples collected in tropical regions were lower compared to other areas, suggesting unique characteristics in tropical latitudes.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Minghui Zhang, Amina Khaled, Pierre Amato, Anne-Marie Delort, Barbara Ervens
Summary: The study focuses on the impact of primary biological aerosol particles (PBAPs) on aerosol-cloud interactions and optical properties, highlighting that changes in the hygroscopicity of submicron PBAPs may affect their cloud condensation nuclei (CCN) ability. Furthermore, it notes that the physical, chemical, and biological ageing processes of PBAPs could alter their activities, influencing aerosol-cloud interactions and optical properties.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Meteorology & Atmospheric Sciences
Christina S. McCluskey, Andrew Gettelman, Charles G. Bardeen, Paul J. DeMott, Kathryn A. Moore, Sonia M. Kreidenweis, Thomas C. J. Hill, Kevin R. Barry, Cynthia H. Twohy, Darin W. Toohey, Bryan Rainwater, Jorgen B. Jensen, John M. Reeves, Simon P. Alexander, Greg M. McFarquhar
Summary: Southern Ocean low-level mixed phase clouds pose a challenge for accurately representing in Earth system models. Simulated clouds in the Community Earth System Model version 2 now have too little ice, while observations show that marine particles are the main contributors to cloud ice nucleation. This study emphasizes the importance of assessing simulated mineral dust properties in order to better represent ice nucleating particle populations in the Southern Ocean.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Sabin Kasparoglu, Russell Perkins, Paul J. Ziemann, Paul J. DeMott, Sonia M. Kreidenweis, Zachary Finewax, Benjamin L. Deming, Marla P. DeVault, Markus D. Petters
Summary: This study presents measurements of the ice nucleating ability of secondary organic material at low temperatures and high ice saturation, and finds that heterogeneous ice nucleation of glassy secondary organic materials is likely uncommon.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Environmental Sciences
Siyu Chen, Hongru Bi, Renhe Zhang, Yong Wang, Jianping Guo, Dan Zhao, Yu Chen, Yawen Guan, Zhaoyang Xie
Summary: Dust-cloud-surface radiation interactions have complex nonlinear effects on surface albedo. An analysis of a snow event in Urumqi, China, revealed that both the interaction between dust and clouds and dust deposition on snow contributed to a decrease in snow albedo. This study highlighted the importance of considering the comprehensive effect of dust-cloud-radiation interactions in future research.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Meteorology & Atmospheric Sciences
B. Kaercher, P. J. DeMott, E. J. Jensen, J. Y. Harrington
Summary: This study systematically investigates the competing nucleation processes during cirrus formation and considers the effects of various factors. The results show that ice-nucleating particles (INPs) can increase the occurrence of cirrus clouds and potentially alter their microphysical properties, but they do not completely suppress homogeneous freezing events. Therefore, it is suggested to improve ice growth models.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Multidisciplinary Sciences
Lydia G. Jahl, Thomas A. Brubaker, Michael J. Polen, Leif G. Jahn, Kerrigan P. Cain, Bailey B. Bowers, William D. Fahy, Sara Graves, Ryan C. Sullivan
Summary: Recent research has found that ice-nucleating particles in biomass-burning aerosol are driven by the production of mineral phases, and atmospheric aging can enhance the ice activity of these particles. Removing organic carbon particle coatings can increase the ice activity of biomass-burning aerosol by more than an order of magnitude.
Article
Meteorology & Atmospheric Sciences
Kevin Kilchhofer, Fabian Mahrt, Zamin A. Kanji
Summary: Ice nucleating particles are a small portion of tropospheric aerosol, but play a crucial role in cloud microphysical processes. This study found that atmospheric aging can impact the ice nucleation abilities of aerosol particles, with some particles showing enhanced heterogeneous ice nucleation activity after cloud processing. Inorganic aerosol particles exhibit stronger ice nucleation activity in their unprocessed state compared to organic aerosol, but their activity decreases after cloud processing.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Geosciences, Multidisciplinary
Yuzhi Liu, Jianping Huang, Tianhe Wang, Jiming Li, Hongru Yan, Yongli He
Summary: This paper reviews the progress in the study of aerosol-cloud interactions over the Tibetan Plateau (TP) and discusses the challenges for further understanding this interaction in the future.
EARTH-SCIENCE REVIEWS
(2022)
Article
Multidisciplinary Sciences
Casey J. Wall, Joel R. Norris, Anna Possner, Daniel T. Mccoy, Isabel L. Mccoy, Nicholas J. Lutsko
Summary: This study quantifies the relationship between anthropogenic sulfate aerosols and low-level clouds using satellite observations, and estimates the range of equilibrium climate sensitivity (ECS) by constraining the associated radiative forcing. The results indicate that the uncertainty in aerosol forcing is smaller and ECS may be larger than previously assessed.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Meteorology & Atmospheric Sciences
D. Y. Chang, J. Lelieveld, B. Steil, J. Yoon, S. S. Yum, A-H Kim
Summary: The choice of cloud droplet nucleation (CDN) scheme has a significant impact on estimated cloud radiative effects, especially in regions with high anthropogenic fine particle pollution. Tuning parameters can restrict the variability induced by different CDN schemes in simulating climate, while regional sensitivity is crucial for optimal climate simulation.
ATMOSPHERIC RESEARCH
(2021)
Article
Environmental Sciences
Edward Gryspeerdt, Tom Goren, Tristan W. P. Smith
Summary: The response of clouds to aerosol perturbations varies in time scales, with instantaneous effects and longer-term adjustments. Ship emissions of aerosols can affect cloud properties within a few hours, while cloud adjustments can continue for more than 10 hours. The temporal evolution and background cloud field are crucial in understanding the aerosol impact on clouds.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Environmental Sciences
Teresa M. M. Seifried, Florian Reyzek, Paul Bieber, Hinrich Grothe
Summary: Scots pine is the most widespread pine species and plays a major role in boreal forests. Recently, birch trees have been found to release ice-nucleating macromolecules (INMs), but the potential of other tree parts releasing INMs is not known. This study investigated the distribution of INMs in and around Scots pine and found that all investigated samples contained INMs.
Article
Geosciences, Multidisciplinary
Olimpia Bruno, Corinna Hoose, Trude Storelvmo, Quentin Coopman, Martin Stengel
Summary: The study examines the distribution of supercooled liquid fraction in clouds with different temperatures, geographical locations, and cloud types using four satellite-based datasets. Despite discrepancies in phase and temperature between passive and active satellite sensors, all datasets show an increase in SLF with cloud optical thickness and generally larger SLF in the Southern Hemisphere compared to the Northern Hemisphere, except for continental low-level clouds.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Sam J. Silva, Susannah M. Burrows, Mathew J. Evans, Mahantesh Halappanavar
Summary: Graph-theoretical methods have shown their importance in studying different atmospheric chemical mechanisms, revealing similarities and differences between them, and providing new possibilities for scientific discoveries.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Peter J. Marinescu, Susan C. van den Heever, Max Heikenfeld, Andrew Barrett, Christian Barthlott, Corinna Hoose, Jiwen Fan, Ann M. Fridlind, Toshi Matsui, Annette K. Miltenberger, Philip Stier, Benoit Vie, Bethan A. White, Yuwei Zhang
Summary: The study presents results from a model intercomparison project on responses in deep convective cloud updrafts to varying cloud condensation nuclei (CCN) concentrations among different cloud-resolving models. While there are consistent trends, models also show differences in the magnitude of changes in deep convective updrafts and responses in the upper troposphere. The combination of impacts on buoyancy and vertical perturbation pressure gradient terms better explains middle- and upper-tropospheric updraft trends.
JOURNAL OF THE ATMOSPHERIC SCIENCES
(2021)
Article
Meteorology & Atmospheric Sciences
Gavin C. Cornwell, Heng Xiao, Larry K. Berg, Susannah M. Burrows
Summary: Soil dusts are significant sources of aerosol in agricultural regions and can impact the Earth's radiation budget by modifying cloud properties. Vertical transport of agricultural soil dusts within the planetary boundary layer is strongly controlled by turbulence. Large-eddy simulations can better simulate vertical transport due to their resolution in resolving turbulent energy. The study found that particle size was the most crucial factor in determining particle lifetime, with meteorology and particle density having intermediate effects. Release height had minimal impact on simulation results. Utilizing a quasi-single column model (QSCM) revealed greater tracer transport out of the boundary layer, emphasizing the importance of accurately simulating turbulence for understanding particle transport.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Review
Geochemistry & Geophysics
Susannah M. Burrows, Christina S. McCluskey, Gavin Cornwell, Isabelle Steinke, Kai Zhang, Bin Zhao, Maria Zawadowicz, Aishwarya Raman, Gourihar Kulkarni, Swarup China, Alla Zelenyuk, Paul J. DeMott
Summary: Atmospheric ice-nucleating particles play a critical role in precipitation formation and cloud radiative properties. However, our understanding of these particles is still limited. There is a need to bridge observations and models to improve the predictability of ice-nucleating particle abundance.
REVIEWS OF GEOPHYSICS
(2022)
Article
Meteorology & Atmospheric Sciences
Bryce E. Harrop, Susannah M. Burrows, Katherine Calvin, Gabriel J. Kooperman, L. Ruby Leung, Mathew E. Maltrud, Xiaoying Shi, Jinyun Tang, Qi Tang, Hailong Wang, Qing Zhu
Summary: This study examines the plant physiological and radiative impacts of CO2 on rainfall patterns over tropical forest regions. The results show that CO2 reduces the diurnal cycle of rainfall and decreases the occurrence of deep convective rainfall, regardless of the season.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Meteorology & Atmospheric Sciences
Christoph Braun, Aiko Voigt, Corinna Hoose, Annica M. L. Ekman, Joaquim G. G. Pinto
Summary: This study investigates the impact of atmospheric convection and ice nucleating particles on the reflectivity of mixed-phase clouds over a subtropical ice margin. The results show that cloud reflectivity depends on the abundance of ice nucleating particles and there is a clear impact of convection. However, the existence of waterbelt states during the Cryogenian period remains uncertain and calls for further comprehensive Earth system modeling approaches.
JOURNAL OF CLIMATE
(2022)
Article
Geosciences, Multidisciplinary
Lynn M. Russell, Richard H. Moore, Susannah M. Burrows, Patricia K. Quinn
Summary: The oceans contribute to aerosol particles in the atmosphere through sea spray aerosol (SSA) production and the emission of gases that condense to form secondary marine aerosol (SMA). These aerosol emissions include salt particles, sulfate particles, and organic components. SSA particles are mainly formed from bubbles as film drops, while SMA particles come from marine biogenic gas emissions. The impact of ocean-derived particles on climate varies by region, and efforts to quantify global SSA and SMA emissions rely on global models with limited field measurements.
EARTH-SCIENCE REVIEWS
(2023)
Article
Meteorology & Atmospheric Sciences
Sam J. Silva, Susannah M. Burrows, Katherine Calvin, Philip J. Cameron-Smith, Xiaoying Shi, Tian Zhou
Summary: The dry deposition of ozone from the atmosphere to ecosystems plays an important role in connecting atmospheric chemistry and terrestrial biogeochemical processes. A study evaluates the influence of carbon cycle-climate responses on the parameterization of dry deposition using the results of a simulation campaign. Results show that while global annual ozone dry deposition is relatively insensitive to these effects, regional influences can reach up to 10%. The study highlights the significance of accurately representing ozone deposition to snow in Earth System Models and provides recommendations for future simulation campaigns.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geosciences, Multidisciplinary
Chengzhu Zhang, Jean-Christophe Golaz, Ryan Forsyth, Tom Vo, Shaocheng Xie, Zeshawn Shaheen, Gerald L. Potter, Xylar S. Asay-Davis, Charles S. Zender, Wuyin Lin, Chih-Chieh Chen, Chris R. Terai, Salil Mahajan, Tian Zhou, Karthik Balaguru, Qi Tang, Cheng Tao, Yuying Zhang, Todd Emmenegger, Susannah Burrows, Paul A. Ullrich
Summary: E3SM Diags is a modern Python-based Earth system model evaluation tool developed to support DOE's E3SM. It provides a wide range of evaluation tools, flexibility, and the ability to add new observational data and diagnostic algorithms.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Environmental Sciences
Isabelle Steinke, Susannah M. Burrows
Summary: Deriving aerosol-type-dependent parameterizations for ice nucleation processes remains challenging due to large uncertainties associated with laboratory studies and field measurements. One source of uncertainty is a lack of knowledge about the magnitude of particle-to-particle differences in freezing efficiency associated with particles' chemical composition and surface features.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2022)
Article
Environmental Sciences
Kai Zhang, Wentao Zhang, Hui Wan, Philip J. Rasch, Steven J. Ghan, Richard C. Easter, Xiangjun Shi, Yong Wang, Hailong Wang, Po-Lun Ma, Shixuan Zhang, Jian Sun, Susannah M. Burrows, Manish Shrivastava, Balwinder Singh, Yun Qian, Xiaohong Liu, Jean-Christophe Golaz, Qi Tang, Xue Zheng, Shaocheng Xie, Wuyin Lin, Yan Feng, Minghuai Wang, Jin-Ho Yoon, L. Ruby Leung
Summary: This study analyzes the effective radiative forcing of anthropogenic aerosols (ERFaer) simulated by the E3SM version 1 atmospheric model, finding that it is influenced by aerosol composition and optical properties, and that there are regional differences and temporal evolutions. After 1970, the relationships between key aerosol and cloud properties changed significantly, leading to no increase in the global annual mean ERF aer magnitude. Compared to other models, E3SMv1 has a relatively large ERFaer, primarily due to the large indirect aerosol effect. Reducing the anthropogenic aerosol effect through liquid or mixed-phase clouds would be more effective in reducing the net ERFaer magnitude.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Susannah M. Burrows, Richard C. Easter, Xiaohong Liu, Po-Lun Ma, Hailong Wang, Scott M. Elliott, Balwinder Singh, Kai Zhang, Philip J. Rasch
Summary: Sea spray aerosol is a major source of atmospheric particulate matter globally, and the organic matter derived from it plays a significant role in modifying the impacts of sea spray aerosol on clouds and climate. This paper describes the implementation of a parameterization model called OCEANFILMS in a global Earth system model, E3SM, and investigates its effects on simulated aerosol fields, clouds, and climate.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Julia Bruckert, Gholam Ali Hoshyaripour, Akos Horvath, Lukas O. Muser, Fred J. Prata, Corinna Hoose, Bernhard Vogel
Summary: In this study, the coupling of an atmospheric model system and a plume model is utilized to improve the prediction of volcanic ash and SO2 dispersion. By calculating eruption source parameters in real-time and analyzing the complex dynamics of volcanic eruptions, the results show significant improvement in the forecast of ash and SO2 dispersion.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Environmental Sciences
Isabelle Steinke, Paul J. DeMott, Grant B. Deane, Thomas C. J. Hill, Mathew Maltrud, Aishwarya Raman, Susannah M. Burrows
Summary: This study presents a framework for estimating the concentrations of high-temperature marine ice nucleating particles (INPs) in the sea surface microlayer and their subsequent emission into the atmospheric boundary layer. The results suggest that the existing hypotheses can partially explain the observed high INP concentrations, but further research is needed to fill the knowledge gaps.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
