In FY21, the AC4 program focused on a subset of AEROMMA by seeking to support studies of emissions and chemical transformation in the urban atmosphere. To improve our understanding of emissions and chemical reactions that affect urban air quality and climate, the NOAA Chemical Sciences Laboratory is planning the Atmospheric Emissions and Reactions Observed from Megacities to Marine Areas (AEROMMA) aircraft based field campaign to collect new observations from megacities to marine environments, currently scheduled for the summer of 2023. Ground-level ozone can trigger a variety of health problems in children, the elderly, and people of all ages who have lung diseases such as asthma. In a pilot study, field measurements in New York City revealed that fragrant consumer products, such as air freshener, and other VCPs account for over half of the anthropogenic VOC emissions, and enhance formation of ground-level ozone during a heatwave event.
In the presence of nitrogen oxides (NOx), VOCs undergo chemistry that lead to the formation of ground-level ozone and aerosols. The emissions and impacts of VCPs on atmospheric chemistry are not well understood. In urban atmospheres, volatile chemical products (VCPs = coatings, adhesives, inks, personal care products, cleaning agents, etc.) are emerging as a major source of volatile organic compounds (VOCs), which have harmful environmental and health impacts.
Recent research has also revealed major gaps in our understanding of urban chemistry.
In fact, warming climate and increasing episodes of extreme heat-because they exacerbate air quality-require higher emission reductions to meet air quality standards, and present their own challenges due to various impacts of extreme heat. This could be a result of unanticipated trends in emissions, increasing influence of regional background sources, long-range transport, changes in atmospheric chemistry, and/or a consequence of a changing climate with heat waves in the United States becoming more frequent, longer in duration, and more intense. metropolitan areas still violate the 8-hour ozone standard as regulated under the Clean Air Act. The competitively selected projects total $5.48M 1 in grants.ĭespite decades of decline in ground-level ozone and fine particulate matter (PM2.5), many U.S. Emissions, Air Quality, and Heat in Urban AreasĬPO’s Atmospheric Chemistry, Carbon Cycle, and Climate (AC4) program is announcing 10 new 3-year projects and 1 new 2-year project in Fiscal Year 2021 that aim to increase our understanding of emissions and chemical transformation in the urban atmosphere. 127Īutomatic Response Spectra Generation. Makes no guarantees concerning accuracy of the information found here or in the use to which it may be put. However, please be aware that errors may exist in this publication, and that RISA Technologies, LLC We have done our best to insure that the material found in this publication is both useful and accurate. No portion of the contents of this publication may be reproduced or transmitted in any means without the express written permission of RISA-3D Rapid Interactive Structural Analysis 3-DimensionalĬopyright 2012 by RISA Technologies, LLC All rights reserved.
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