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Title: Ice‐Nucleating Particles That Impact Clouds and Climate: Observational and Modeling Research Needs

Journal Article · · Reviews of Geophysics (1985)
DOI:https://doi.org/10.1029/2021RG000745· OSTI ID:1867947
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [4];  [1]; ORCiD logo [1]; ORCiD logo [5]; ORCiD logo [1]; ORCiD logo [6]
  1. Atmospheric Sciences and Global Change Division Pacific Northwest National Laboratory Richland WA USA
  2. Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA
  3. Atmospheric Sciences and Global Change Division Pacific Northwest National Laboratory Richland WA USA, State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Tsinghua University Beijing China
  4. Department of Climate and Environmental Science Brookhaven National Laboratory Upton NY USA
  5. Environmental Molecular Sciences Laboratory Pacific Northwest National Laboratory Richland WA USA
  6. Colorado State University Fort Collins CO USA

Atmospheric ice-nucleating particles (INPs) play a critical role in cloud freezing processes, with important implications for precipitation formation and cloud radiative properties, and thus for weather and climate. Additionally, INP emissions respond to changes in the Earth System and climate, e.g., desertification, agricultural practices, and fires, and therefore may introduce climate feedbacks that are still poorly understood. A better understanding of INP sources, their atmospheric variability, and cloud responses to INPs is required to improve Earth System predictability. As knowl-edge of the nature and origins of INPs has advanced, regional and global weather, climate, and Earth system models have increasingly begun to link cloud ice processes to model-simulated aerosol abundance and types. While these recent advances in nu-merical modeling of INPs are exciting, coupling cloud processes to simulated aerosol also makes cloud physics simulations increasingly susceptible to errors and uncertain-ties in simulation of INPs that are poorly constrained. Advancing INP predictability will require an increased focus on research that bridges the measurement and modeling communities. This review summarizes the current state of knowledge and identifies critical knowledge gaps from both observational and modeling perspectives. In partic-ular, we emphasize the need for research that advances our understanding and capa-bilities in two key areas: (1) observational closure between aerosol and INP quantities and (2) skillful simulation of INPs within existing weather and climate models. We discuss the state of knowledge on various INP particle types as it relates to both of these goals, and briefly discuss the challenges faced in understanding cloud impacts of INPs with present-day models. Finally, we identify priority research directions for both observations and models to improve understanding of INPs and their interactions with the Earth System.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Atmospheric Radiation Measurement (ARM) Data Center; Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE Office of Science (SC), Biological and Environmental Research (BER). Earth and Environmental Systems Science Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division. Pacific Northwest National Laboratory (PNNL)
Contributing Organization:
Pacific Northwest National Laboratory (PNNL); Brookhaven National Laboratory (BNL); Argonne National Laboratory (ANL); Oak Ridge National Laboratory (ORNL)
Grant/Contract Number:
DE‐SC0021116; DE‐SC0020006; AC05‐76RL01830; DE‐SC0020098; AC05-76RL01830; SC0020098; SC0021116; SC0020006; SC0012704
OSTI ID:
1867947
Alternate ID(s):
OSTI ID: 1864503; OSTI ID: 1868184; OSTI ID: 1872375; OSTI ID: 1874076
Report Number(s):
PNNL-SA-165298; BNL-223074-2022-JAAM; e2021RG000745
Journal Information:
Reviews of Geophysics (1985), Journal Name: Reviews of Geophysics (1985) Vol. 60 Journal Issue: 2; ISSN 8755-1209
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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