A recent study supported by AC4 uses modeling methods to improve long-term observational records, confirming an understood trend of decreasing ozone in the lower stratosphere and challenging previous work showing a positive trend in the upper stratosphere.
The newly approved Air Quality and Community Health Research Subcommittee (ACRS) under the OSTP will be led jointly by NOAA, EPA and NIEHS and co-chaired by CPO’s Atmospheric Chemistry, Carbon Cycle and Climate (AC4) Program Manager Monika Kopacz.
An AC4-funded research study finds model bias related to aerosol concentrations compared to global aircraft field data, and corrects the bias using improved precipitation representation.
A new AC4-funded study on atmospheric ozone production uses field observations to investigate changes in ozone production on high ozone concentration days during the summer of 2018.
Using data from the FIREX-AQ field campaign, a new AC4-funded research study develops a comparison between aerosol concentration and the way aerosol particles scatter light in the atmosphere, offering new insights into wildfire smoke evolution.
Americans’ health, security and economic wellbeing are tied to climate and weather. Every day, we see communities grappling with environmental challenges due to unusual or extreme events related to climate and weather.
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