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An Observational Comparison of Level of Neutral Buoyancy and Level of Maximum Detrainment in Tropical Deep Convective Clouds

Retrievals of Convective Detrainment Heights Using Ground-Based Radar Observations

Starzec, M., G. Mullendore, and C. Homeyer (2020), Retrievals of Convective Detrainment Heights Using Ground-Based Radar Observations, J. Geophys. Res., 125, e2019JD031164, doi:10.1029/2019JD031164.

Climatology and Detection of Overshooting Convection From 4 Years of GPM Precipitation Radar and Passive Microwave Observations

Liu, C., C. Liu, and L. Hayden (2020), Climatology and Detection of Overshooting Convection From 4 Years of GPM Precipitation Radar and Passive Microwave Observations, J. Geophys. Res., 125, e2019JD032003, doi:10.1029/2019JD032003.

Unsteady Vortex Behavior in the Asian Monsoon Anticyclone

Siu, L. W., and K. Bowman (2020), Unsteady Vortex Behavior in the Asian Monsoon Anticyclone, J. Atmos. Sci., 77, 4067-4088, doi:10.1175/JAS-D-19-0349.1.

DCOTSS 2020 Virtual STM

Compact Airborne NO2 Experiment

The NASA GSFC Compact Airborne NO2 Experiment (CANOE) instrument measures nitrogen dioxide (NO2) on both pressurized and unpressurized (high-altitude) aircraft. Using non-resonant laser induced fluorescence (LIF), CANOE possesses the high sensitivity, fast time response, and dynamic range needed to observe NO2 throughout the troposphere and lower stratosphere.

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Compact Airborne Formaldehyde Experiment

The NASA GSFC Compact Airborne Formaldehyde Experiment (CAFE) instrument measures formaldehyde (CH2O) on both pressurized and unpressurized (high-altitude) aircraft. Using non-resonant laser induced fluorescence (LIF), CAFE possesses the high sensitivity, fast time response, and dynamic range needed to observe CH2O throughout the troposphere and lower stratosphere.

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.

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DC-8 - AFRC, ER-2 - AFRC, C-23 Sherpa - WFF, HL5200 Hanseo University (NIER)
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Rapid Ozone Experiment

The NASA Rapid OZone Experiment (ROZE) is an in situ instrument capable of measuring ozone (O3) throughout the troposphere and lower stratosphere on airborne platforms. The instrument uses cavity-enhanced absorption to measure the amount of ozone in a sampled volume flowing through an optical cell. The high-sensitivity of the cavity-enhanced detection scheme and the small sample volume enable high precision measurements in short integration times, making this instrument suitable for measuring O3 fluxes (the exchange between the Earth's surface and atmosphere) with the eddy covariance technique. The instrument is designed for autonomous operation and requires minimal support (and no gases or dry ice) in the field. An inlet mounted in the free stream is needed to sample ambient air.

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NASA embarks on five US expeditions targeting air, land and sea

NASA is sending five airborne campaigns across the United States in 2020 to investigate fundamental processes that ultimately impact human lives and the environment, from snowstorms along the East Coast to ocean eddies off the coast of San Francisco.

A Snowy Science Team Meeting

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