Advancing scientific understanding of climate, improving society’s ability to plan and respond
Advancing scientific understanding of climate, improving society’s ability to plan and respond
A team of researchers use observations from FIREX-AQ to quantify sulfur dioxide emissions from wildfires and agricultural burns across the western US to understand how regional and long-range air quality can be affected, in a new research study supported by AC4.
AC4-supported research team provides an essential evaluation of laser-based analyzing instruments needed to investigate sources and impacts of atmospheric methane emissions in cities affected by COVID-19 shutdowns.
Comparisons of Atmospheric Measurement Instruments to Enable Urban Methane Research Read More »
Nitrogen reacts with oxygen and other chemical compounds to form atmospheric oxides, which significantly impact the chemical composition of our atmosphere, human and environmental health, and broader climate processes. These gases can be produced by a range of natural and anthropogenic sources including fossil fuel combustion and wildfires. The atmospheric chemistry research community has developed new methods to track the emission sources of these gases and their key chemical reactions by analyzing the stable isotopes of nitrogen and oxygen in the gas compounds. However, there is a lack of a well-established method to simultaneously differentiate and quantify the concentration and isotopic composition of multiple groups of nitrogen oxides.
Improving Experimental Methods to Study Air Pollution by Nitrogen Species Read More »
A recent study supported by AC4 uses drought index as a tool to explain the trends of particulate matter (PM) air pollution and its association with wildfires across the US.
Linking Drought, Wildfires, and Air Pollution Across the US Read More »
A recent study supported by AC4 and COM investigates emissions of the greenhouse gas with the largest known warming potential, updates the understanding of how much we have in the atmosphere, and proposes possible solutions for reducing emissions.
A recent FIREX-AQ study supported by AC4 analyzed emissions and revealed region-specific chemical signals during a controlled burn in the understudied region of Northern Michigan.
A new AC4-supported study published in Nature Communications provides pioneering results on the complex formation of secondary organic aerosol air pollutants.
New Research Uncovers Complex Atmospheric Chemistry in the formation of air Pollutants Read More »
A report was published in BAMS on an AC4 and ERB workshop with stakeholders and end users with diverse backgrounds in atmospheric science to provide the state of the science and user needs for operational atmospheric composition measurements to inform future NOAA Low Earth Orbit satellite missions.
Results of UV-Vis-NIR Workshop Co-Hosted by ESSM Published in a BAMS Write Up Read More »
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.
Refining Long-Term Data of Ozone in the Stratosphere Using Observations and Modeling Read More »
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.