AEROMMA will determine organic emissions and chemistry, including of understudied VCPs, in the most populated urban areas in the United States, to better understand the impact on ozone and aerosol formation, and to study their relative importance on urban air quality.
Determine reactive nitrogen emissions and chemistry in major urban corridors (i.e., urban core to suburban and outlying rural areas) to understand the current importance of combustion and non-combustion sources, continue the trend analysis and determine changes in the reactive nitrogen cycle chemistry and its influence on ozone and aerosol formation.
Determine the fraction of urban VOC and NOx emissions associated with emissions of CO2 and methane (CH4) from transportation, buildings, industry, and landfills to quantify co-benefits between managing air quality and the carbon cycle.
Investigate urban and coastal meteorology, to better understand extreme heat on urban air quality, urban heat islands, and the role of long-range transport versus local sources of air pollution.
AEROMMA will provide observations at the interface of the marine atmosphere and the urban airshed to quantify what impact marine emissions have on urban air quality and composition and the impact of urban outflow on marine chemistry. Observations will resolve the relative contributions to SO2, sulfate aerosols, and CCN from biogenic and anthropogenic sulfur sources
Utilize observations of aerosol abundance and composition to understand the impact of the various sources of biogenic and anthropogenic emissions on aerosol and CCN formation.
AEROMMA will exploit the range and capabilities of the NOAA WP-3D to sample the remote marine atmosphere in regions with (1) limited impacts from anthropogenic sources, (2) high atmospheric burden from biogenic emission, (3) stable meteorology, and (4) a well-defined marine boundary layer.
Investigation of the emissions and chemistry in the remote marine atmosphere that drive the formation of secondary products and marine aerosols. Flux observations will be used to better quantify the air-sea exchange of VOCs to better understand the atmospheric budget of gas-phase precursor species in the remote atmosphere.
Observations to better characterize the marine sulfur oxidation cycle and secondary aerosol formation and dependencies on key parameters such as temperature, NOx, and background aerosol.
Utilize measurements throughout the marine boundary layer in both clouded and cloud-free conditions to quantify air-sea exchange of trace gases and production of primary aerosol, and aqueous aerosol and cloud scavenging. We aim to better identify the linkages between marine emissions and aerosol abundance to improve predictions of marine aerosol-cloud-climate interactions in a changing climate. This data set will be valuable for evaluating models identifying the impact of a changing climate on CCN sources, cloud albedo and Earth's radiative budget