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The Deep Convective Clouds and Chemistry (DC3) Field Campaign,

Barth, M., et al. (2014), The Deep Convective Clouds and Chemistry (DC3) Field Campaign,, Bull. Am. Meteorol. Soc., doi:10.1175/BAMS-D-13-00290.1.

A new airborne laser-induced fluorescence instrument for in situ detection of formaldehyde throughout the troposphere and lower stratosphere

Cazorla, M., et al. (2015), A new airborne laser-induced fluorescence instrument for in situ detection of formaldehyde throughout the troposphere and lower stratosphere, Atmos. Meas. Tech., 8, 541-552, doi:10.5194/amt-8-541-2015.

Size-resolved measurements of brown carbon in water and methanol extracts and estimates of their contribution to ambient fine-particle light absorption

Liu, J., et al. (2013), Size-resolved measurements of brown carbon in water and methanol extracts and estimates of their contribution to ambient fine-particle light absorption, Atmos. Chem. Phys., 13, 12389-12404, doi:10.5194/acp-13-12389-2013.

Brown carbon in the continental troposphere

Liu, J., et al. (2014), Brown carbon in the continental troposphere, Geophys. Res. Lett., 41, 2191-2195, doi:10.1002/2013GL058976.

When Wildfire Smoke and Thunderstorms Collide

The Deep Convective Clouds and Chemistry (DC3) airborne campaign got an up-close look at what happens when wildfire smoke makes its way into a thunderstorm.

NASA DC-8, NCAR G-V Continue Bumpy Science Flights

Two flying science laboratories fly around thunderstorm cores and anvil clouds over the central U.S. during NCAR's DC3 atmospheric science campaign.

DC3 Thunderstorm Study Science Flights Underway

Complex environmental science campaign over central U.S. to aid scientists' understanding of how large thunderstorms affect atmospheric chemistry.

Deep Convective Clouds and Chemistry (DC3)

The Deep Convective Clouds and Chemistry (DC3) field campaign is exploring the impact of large thunderstorms on the concentration of ozone and other substances in the upper troposphere. The campaign is being led by the National Center for Atmospheric Research in Boulder, Colorado, and is funded by the National Science Foundation (NSF) and NASA.

The NASA DC-8, the NSF/NCAR Gulfstream-V (GV), and the DLR Falcon 20 are based in Salina, Kansas for the mission.

 

Watch a time-lapse video of the inside of the NASA DC-8 as over 20 instruments were installed.

DC3: Chemistry of Thunderstorms

NASA researchers begin a campaign that will take them into the heart of thunderstorm country.

In Situ Airborne Formaldehyde

The NASA GSFC In Situ Airborne Formaldehyde (ISAF) instrument measures formaldehyde (CH2O) on both pressurized and unpressurized (high-altitude) aircraft. Using laser induced fluorescence (LIF), ISAF possesses the high sensitivity, fast time response, and dynamic range needed to observe CH2O throughout the troposphere and lower stratosphere, where concentrations can range from 10 pptv to hundreds of ppbv.

Formaldehyde is produced via the oxidation of hydrocarbons, notably methane (a ubiquitous greenhouse gas) and isoprene (the primary hydrocarbon emitted by vegetation). Observations of CH2O can thus provide information on many atmospheric processes, including:
 - Convective transport of air from the surface to the upper troposphere
 - Emissions of reactive hydrocarbons from cities, forests, and fires
 - Atmospheric oxidizing capacity, which relates to formation of ozone and destruction of methane
In situ observations of CH2O are also crucial for validating retrievals from satellite instruments, such as OMI, TROPOMI, and TEMPO.

Instrument Type: 
Fluorescence
Measurements: 
CH2O
Aircraft: 
DC-8 - AFRC, WB-57 - JSC, Gulfstream V - NSF, WP-3D Orion - NOAA, C-130 - NSF, B-200 (UC-12B) - LARC
Point(s) of Contact: 
Glenn M. Wolfe (PI)

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