Climate Program Office News

New Study Discovers a Key Model Improvement to Accurately Represent Atmospheric Aerosols

  • 11 November 2022
New Study Discovers a Key Model Improvement to Accurately Represent Atmospheric Aerosols

Aerosols are an important component of our atmosphere, and representing them correctly in simulations is key to understanding their impact on air quality, climate systems, and human health. A new study, supported in part by the Climate Program Office’s Atmospheric Chemistry, Carbon Cycle and Climate (AC4) Program, assesses aerosol concentration results from a global chemical transport model by comparing them to observations made during the NASA Atmospheric Tomography Mission (ATom). The findings, published in JGR Atmospheres, show an overestimation of aerosols in the Northern Hemisphere during the winter season which was improved by updating the representation of wet scavenging, or the process by which aerosols are collected by falling precipitation (e.g. rain). This adjustment improves estimation of the amount of time aerosols spend in the atmosphere, which is important for accurate understanding and mitigation of air quality impacts. This study contributes to the AC4 Program’s initiative to investigate the processes affecting aerosols in the atmosphere and provides essential insight into the accurate representation of aerosols and thus precipitation in models.

 

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About the Climate Program Office

The Climate Program Office (CPO) manages competitive research programs in which NOAA funds high-priority climate science, assessments, decision support research, outreach, education, and capacity-building activities designed to advance our understanding of Earth’s climate system, and to foster the application of this knowledge in risk management and adaptation efforts.  CPO-supported research is conducted in regions across the United States, at national and international scales, and globally.  Learn more...

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