Atmospheric Composition & Chemical Processes: Studies

Aircraft Studies


ATTREX, Dryden. Airborne Tropical Tropopause Experiment (ATTREX) will perform a series of measurement campaigns (September - November 2011, November 2012 - February 2013, January - March 2014) using the high-altitude long-range NASA Global Hawk (GH) unmanned aerial system (UAS) to evaluate changes in stratospheric humidity and ozone concentration. More info...

SEAC4RS logo

SEACR4S, Houston, Texas. Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC4RS) is based out of Ellington Field in August - September 2013. Focused on pollution emissions and the evolution of gases and aerosols in deep convective outflow, and the influences and feedbacks of aerosol particles from anthropogenic pollution and biomass burning on meteorology and climate, the project requires two aircraft to accomplish the goals. The NASA DC-8 will provide observations from near the surface to 12 km, and the NASA ER-2 will provide high altitude observations reaching into the lower stratosphere as well as important remote sensing observations connecting satellites with observations from lower flying aircraft and surface sites. More info...

Southeast mountains
Great Smoky Mountains National Park

SENEX 2013, Southeast US. The goal of SENEX 2013 is to study the interactions between natural and anthropogenic emissions in the southeast at the nexus of the air quality and climate change. Scientists will quantify the emissions of greenhouse gases and aerosol, and investigate the roles played by anthropogenic and natural emissions in the formation of ozone and aerosol in the atmosphere. This airborne study involves the NOAA WP-3D aircraft, forecast modeling and surface monitoring networks. More info...

clouds photo

DC3, Salina, Kansas. The Deep Convective Clouds & Chemistry (DC3) experiment investigates the impact of deep, midlatitude continental convective clouds, including their dynamical, physical, and lightning processes, on upper tropospheric composition and chemistry. Airborne measurements taken from the NASA DC-8 in July 2012 provide in situ observations to characterize the convective storm inflow and provide remote sensing to aid in flight planning and column characterization. Two of our SP2 black carbon instruments are aboard the NASA DC-8 aircraft. More info...

GV in flight
NSF / NCAR Gulfstream V

HIPPO IV & V, Pacific Basin. The HIAPER Pole-to-Pole Observations (HIPPO) of Carbon Cycle and Greenhouse Gases Study will measure cross sections of atmospheric concentrations approximately pole-to-pole, from the surface to the tropopause, five times during different seasons over a three year period. The main goal of HIPPO is to determine the global distribution of carbon dioxide and other trace atmospheric gases by sampling at various altitudes and latitudes in the Pacific Basin. More info...


MACPEX, Houston, Texas. 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. The campaign involves the NASA WB-57 based at Ellington Field, TX 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 info...

Laboratory Studies

CIMS lab
CRDS lab
CSD laboratories for CRDS instruments.

Studies in the laboratory focus primarily on the fundamental processes that occur in the atmosphere via the characterization of the chemical and physical properties of atmospheric trace species. Scientists develop experimental methods to measure the reactivity and photochemistry, as well as, the optical and physical properties of stable, transient, and radical species. Our laboratory instruments are used in combination to develop a more comprehensive picture for a specific species or process.