NASA - National Aeronautics and Space Administration
NASA Tropospheric Chemistry Integrated Data Ceneter


DISCOVER-AQ: The overarching objective of the DISCOVER-AQ investigation is to improve the interpretation of satellite observations to diagnose near-surface conditions relating to air quality. To diagnose air quality conditions from space, reliable satellite information on aerosols and ozone precursors is needed for specific, highly correlated times and locations to be used in air quality models and compared to surface- and aircraft-based measurements. DISCOVER-AQ will provide an integrated dataset of airborne and surface observations relevant to the diagnosis of surface air quality conditions from space.  >> more

>> DISCOVER-AQ Science

SEAC4RS: The SEAC4RS (Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys) Goals: (1) To determine how pollutant emissions are redistributed via deep convection throughout the troposphere. (2) To determine the evolution of gases and aerosols in deep convective outflow and the implications for UT/LS chemistry. (3) To identify the influences and feedbacks of aerosol particles from anthropogenic pollution and biomass burning on meteorology and climate through changes in the atmospheric heat budget (i.e., semi-direct effect) or through microphysical changes in clouds (i.e., indirect effects). (4) To serve as a calibration/validation test bed for future satellite instruments and missions.  >> more

DC3: The Deep Convective Clouds and Chemistry Project (DC3) field campaign investigates the impact of deep, midlatitude continental convective clouds, including their dynamical, physical, and lightning processes, on upper tropospheric (UT) composition and chemistry. The DC3 field campaign makes use of extensively instrumented aircraft platforms and ground-based observations. The NSF/NCAR Gulfstream-V (GV) aircraft is the primary platform to study the high altitude outflow of the storms, and is instrumented to measure a variety of gas-phase species, radiation, and cloud particle characteristics..  >> more

DEVOTE:The DEVOTE (Development and Evaluation of satellite ValidatiOn Tools by Experimenters) project will modify the NASA Langley B-200 aircraft to carry a suite of in situ instruments and then deploy this aircraft along with a remote sensor suite aboard the NASA Langley UC-12 aircraft to study aerosol and cloud optical and microphysical parameters.

MACPEX: The Mid-latitude Airborne Cirrus Properties Experiment (MACPEX) is an airborne field campaign to investigate cirrus cloud properties and the processes that affect their impact on radiation. Utilizing the NASA WB-57 based at Ellington Field, TX, the campaign will take place in the March / April 2011 timeframe. Science flights will focus on central North America vicinity with an emphasis over the DoE ARM SGP site in Oklahoma.  >> more

ARCTAS:The Arctic is a beacon of global change. It is where warming has been strongest over the past century, accelerating over the past decades. It is an atmospheric receptor of
pollution from the northern midlatitudes continents, as manifested in particular by thick
aerosol layers (“arctic haze”) and by accumulation of persistent pollutants such as mercury.
>> View the entire ARCTAS White_Paper (2.6MB)PDF file

INTEX-B: The first phase (INTEX-A) was completed in the summer of 2004 and the second phase, INTEX-Bfield study, is to be performed during an approximate 8-week period from March 1 to April 30, 2006...
>> View the entire INTEX-B White_Paper (1.0MB)
PDF file


is to be performed in two phases. Phase A will take place during the summer (July/August) of 2004 and Phase B during the spring (April/May) of 2006. Phase A is in summer when photochemistry is most intense and climatic issues involving aerosols and carbon cycle are most pressing, and Phase B is in spring when Asian transport to North America is at its peak. Several coastal and continental sites across North America have been selected as bases of operation. The experiment will involve scientists from the US, UK, Canada, Germany, and France, and will be supported by forecasts from meteorological and chemical models, satellite observations, surface networks, and enhanced O3-sonde releases.

TRACE-P, conducted in March/April 2001, had as it's major objectives to 1) determine the chemical composition of the Asian outflow over the western Pacific in spring in order to understand and quantify the export of chemically and radiatively important gases and aerosols, and their precursors, from the Asian continent and to 2) determine the chemical evolution of the Asian outflow over the western Pacific in spring and to understand the ensemble of processes that control the evolution.

GTE Field Campaigns (1983 - 2001)


NASA - National Aeronautics and Space
Curator: Ali Aknan
NASA Official: Dr. Gao Chen

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Last updated: July 08, 2013