US methane “hotspot” is snapshot of local pollution 25 November 2020

US methane “hotspot” is snapshot of local pollution

Supported in part by CPO’s Atmospheric Chemistry, Carbon Cycle, and Climate (AC4) Program, scientists from two University of Colorado institutes and NOAA participated in an intensive field campaign that used instrumented aircraft and vans to investigate the causes or sources of a methane hotspot in the US Southwest. 

Long-Term Field Observations Lead to New Insights in the Formation of Organic Aerosols 24 November 2020

Long-Term Field Observations Lead to New Insights in the Formation of Organic Aerosols

Research funded by two AC4 awards used observations from three long-term networks to update or “constrain” the chemical transport model mechanisms to more accurately represent the indirect formation and month-to-month variability of organic aerosol in the US southeast. 

Predicting the Mass Concentration of Black Carbon in the Atmosphere 17 November 2020

Predicting the Mass Concentration of Black Carbon in the Atmosphere

Relying on both classical statistical techniques as well as new machine learning approaches, this project funded in part by Atmospheric Chemistry, Carbon Cycle, & Climate presents a new model for predicting the mass of black carbon in the atmosphere that can be used with inputs commonly collected at most long-term monitoring sites. 

Using Aircraft Measurements to Investigate Primary vs. Secondary Sources of Organic Aerosols in Wildfire Plumes 17 November 2020

Using Aircraft Measurements to Investigate Primary vs. Secondary Sources of Organic Aerosols in Wildfire Plumes

This study, funded in part by Atmospheric Chemistry, Carbon Cycle, & Climate (AC4), investigates the relationship between primary and secondary sources of organic aerosols over the lifetime of a wildfire plume, finding at least half of the secondary sources are the result of evaporation of the primary sources. 

Marine Sulfur Aerosols Increase in the Alaskan Arctic 10 November 2020

Marine Sulfur Aerosols Increase in the Alaskan Arctic

Researchers supported in part by CPO’s Atmospheric Chemistry, Carbon Cycle, & Climate (AC4) program have collected new aerosol data at two coastal sites on the North Slope of Alaska. Their work, combined with past data from NOAA, reveals that sulfur aerosol concentrations continue to increase at more than 2% per year.

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Contact

Dr. Monika Kopacz (UCAR)
Program manager, Atmospheric Chemistry, Carbon Cycle and Climate (AC4)
P: (301) 734-1208
E: monika.kopacz@noaa.gov

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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.