Research Highlights

 

Members of the ARM Climate Research Facility‚Äôs science team are major contributors to radiation and cloud research. Scientists and investigators using ARM facilities publish about 150 refereed journal articles per year, and ARM Facility data are used in many studies published by other scientific organizations. These documented research efforts represent tangible evidence of the ARM Facility’s contribution to advances in almost all areas of atmospheric radiation and cloud research.

Recent Highlights

Why do general circulation models overestimate the aerosol cloud lifetime effect?

21 March 2017

Penner, Joyce E.

Supported by: ARM ASR

Research area: Cloud-Aerosol-Precipitation Interactions

Traditionally, aerosols have been thought to lengthen cloud lifetime by increasing droplet number and reducing droplet size, thereby delaying and reducing the formation of rain in clouds. These longer-lived clouds would then increase cloud cover and reflect more sunlight. Yet observational evidence for these lifetime effects is limited and contradictory. [...]

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Low-aerosol conditions over the Azores occur during marine cold air outbreaks.

20 March 2017

Wood, Robert

Supported by: ARM ASR

Research area: Cloud-Aerosol-Precipitation Interactions

Current estimates suggest that between one-quarter and two-thirds of all cloud condensation nuclei in the atmosphere may be a direct result of human activities. Climate models suggest that brighter clouds are masking a significant fraction of the global warming that the Earth would be experiencing if aerosol particle concentrations had [...]

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High-resolution photos of clouds from the surface reveal structure down to centimeter level.

10 March 2017

Schwartz, Stephen E.

Supported by: ARM ASR

Research area: Cloud Distributions/Characterizations

Even thin clouds exert strong radiative influences that must be accurately represented in models. This study examines optical depth of thin clouds at unprecedentedly high resolution to examine this important cloud property at scales down to a few centimeters.

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