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Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment

      NASA’s Aerosol Cloud meTeorology Interactions oVer the western ATlantic Experiment (ACTIVATE) project is a five-year project (January 2019 – December 2023) that will provide important globally-relevant data about changes in marine boundary layer cloud systems, atmospheric aerosols and multiple feedbacks that warm or cool the climate. Marine boundary layer clouds play a critical role in Earth’s energy balance and water cycle.

ACT-America Logo ACT-America - Atmospheric Carbon and Transport – America

      ACT-America, or Atmospheric Carbon and Transport – America, will conduct five airborne campaigns across three regions in the eastern United States to study the transport and fluxes of atmospheric carbon dioxide and methane. Each 6-week campaign will measure how weather systems transport these greenhouse gases. The objective of the study is to enable more accurate and precise estimates of the sources and sinks of these gases.

NAAMES Logo NAAMES - North Atlantic Aerosols and Marine Ecosystems Study

      The North Atlantic Aerosols and Marine Ecosystems Study (NAAMES) is a five year investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds and their implications for climate.

KORUS-AQ Logo KORUS-AQ - Korea-United States Air Quality Study

      KORUS-AQ offers the opportunity to further advance NASA goals and those of its international partners related to air quality through a targeted field study focused on the South Korean peninsula and surrounding waters. The study will integrate observations from aircraft, ground sites, and satellites with air quality models to understand the factors controlling air quality across urban, rural, and coastal interfaces.

CAPABLE CAPABLE - The Chemistry and Physics Atmospheric Boundary Layer Experiment

      The Chemistry and Physics Atmospheric Boundary Layer Experiment (CAPABLE) is a ground-based observation site created in 2009 that is dedicated to studying atmospheric conditions in the Tidewater region of Virginia.
The site, which is located at NASA’s Langley Research Center, is a collaborative effort between the Science Directorate at NASA Langley, the U.S. Environmental Protection Agency and the Virginia Department of Environmental Quality. Together, these partners operate a suite of instrumentation designed to track and observe pollutants in the Earth’s troposphere.



      The DEVOTE project, a hands-on training initiative, is lead by a team of early career scientists and engineers who will not only gain mission experience, but will also contribute to the latest Earth science research through a field campaign. The project Development and Evaluation of satellite ValidatiOn Tools by Experimenters (DEVOTE) was awarded $800k in response to the Hands-On Project Experience (HOPE), an initiative funded jointly by the Office of Chief Engineer and the Science Mission Directorate at NASA Headquarters. DEVOTE is aimed at improving the next generation of aerosol satellites.



      DISCOVER-AQ is a four-year campaign to improve the use of satellites to monitor air quality for public health and environmental benefit. Through targeted airborne and ground- based observations, DISCOVER-AQ will enable more effective use of current and future satellites to diagnose ground level conditions influencing air quality.

GTE GTE - Global Tropospheric Experiment

      GTE utilizes large, extensively instrumented aircraft as primary research tools. However, GTE also draws heavily upon satellite observations of meteorology, land use and atmospheric chemical species to aid in experiment design and in the scientific analyses of results obtained from aircraft and ground-based measurements. The GTE, managed through the Tropospheric Chemistry Program in the Earth Science Division, Science Mission Directorate at NASA Headquarters, was initiated in the early 1980s. Implementation of the GTE Project is the responsibility of the Science Directorate at the NASA Langley Research Center.

IMPACT Logo IMPACT - Interactive Modeling Project for Atmospheric Chemistry and Transport

      Atmospheric modeling and simulation studies have been invaluable in the development of our current level of understanding of the fundamental processes of radiation, chemistry and dynamics that ultimately determine the circulation, thermal structure and distribution of constituents in the Earth's atmosphere. Many of these studies have treated the processes independently or have suppressed important couplings between them. This approach was a conscious strategy adopted to make the studies tractable and often relied on assumptions that the couplings were weak enough to neglect. Recently however, there has been increased awareness that many phenomena of interest may involve subtle and complex interactions among these processes.

LARGE Logo LARGE - Langley Aerosol Research Group

      LARGE is based in the Chemistry and Dynamics Branch of the Science Directorate at NASA’s Langley Research Center. The group specializes in making in situ aerosol and cloud measurements and conducts research to improve understanding of atmospheric aerosols and their interactions with water vapor. LARGE also takes part in model and remote sensor validation studies and assessments of the environmental impacts of human activities.

LiDAR Logo LiDAR - Light Detection and Ranging

      The LiDAR group at NASA Langley Research Center has been developing and applying advanced lidar systems to a broad range of atmospheric investigations. These activities have included the development and application of airborne Differential Absorption Lidar (DIAL) systems for studies of ozone, water vapor, aerosols and clouds.

RAQMS Logo RAQMS - Regional Air Quality Modeling System

      Scientists use the RAQMS computer model to predict air quality around the globe. RAQMS has been designed to address the atmospheric chemistry modeling needs for NASA's Earth Science Enterprise science missions and to prototype future NASA, NOAA and EPA operational air quality prediction systems.

TOR Maps - Tropospheric Ozone Residual

      Scientists now have a new data set to view the past two decades of ozone in the lower atmosphere. Using a technique pioneered by a Langley scientist, researchers have completed daily maps of ozone in the lower atmosphere between 50 degrees north and 50 degrees south from 1979 to 2000. The database is available at the TOR Web site.