Research Highlights

Members of ARM's science team are major contributors to radiation and cloud research. ARM investigators publish about 150 refereed journal articles per year, and ARM data are used in many studies published by other scientific organizations. These documented research efforts represent tangible evidence of ARM's contribution to advances in almost all areas of atmospheric radiation and cloud research. Below is a selection of summaries highlighting recently-published ARM research. The entire collection of ARM Research Highlights can be accessed using the sorting buttons at right.

To send in a research highlight, please use the submittal form.

Light Absorption of Primary Organic Aerosol Paper Named ACS Editors' Choice

Apr 20, 2015 Funded By: ASR

Organic aerosols (OAs) in the atmosphere affect Earth’s energy budget by not only scattering but also absorbing solar radiation due to the presence of the so-called “brown carbon” (BrC) component. However, the absorptivities of OAs are not represented or are poorly represented in current climate and chemical transport models. Most models still treat primary OA [...]

Read more

The Two Faces of Aerosols

Apr 15, 2015 Funded By: ARM ASR

It's a double dose of climate disturbance. Tiny particles of pollution—also known as aerosols—both cool and warm the planet. Now, a team of scientists from Pacific Northwest National Laboratory and NASA identified how current climate models may be far off in estimating the actual amounts of these particles and their total impact on the atmosphere. [...]

Read more

Intersecting Cold Pools: Convective Cloud Organization by Cold Pools over Tropical Ocean

Apr 06, 2015 Funded By: ARM ASR

As rain drops descend to the surface, they can evaporate and cool the air. The cold air then spreads horizontally and forms pools at the surface that displace surrounding warm air. The dynamics of cold pools are an important mechanism of organizing convection. Researchers, including Department of Energy scientists at Pacific Northwest National Laboratory, [...]

Read more

Comparison of Vertical Velocities in Cirrus Derived from Aircraft and Ground-based Radar

Mar 31, 2015 Funded By: ARM ASR

Vertical velocities and turbulence in the upper troposphere are key elements affecting the microphysical properties and dynamical evolution of cirrus clouds. In particular, vertical velocities contribute to the cooling rates in the upper troposphere thereby affecting the values of ice supersaturations, the number concentrations of ice crystals formed by ice nucleation, and the growth rates [...]

Read more

Satellite Inference of Thermals and Cloud Base Updraft Speeds

Mar 30, 2015 Funded By: ARM ASR

Thermals transfer and distribute heat, moisture, momentum, and pollutant materials from the surface layer to the upper part of the convective mixed layer. Thermals also play a central role in the formation of convective clouds and precipitation. Cloud base updrafts govern water vapor supersaturation there, determining the concentration of cloud condensation nuclei (CCN) activated into [...]

Read more