Research Highlights

 

Members of the Atmospheric Radiation Measurement (ARM) user facility‚Äôs science team are major contributors to radiation and cloud research. Scientists and investigators using ARM publish about 150 peer-reviewed 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.

Recent Highlights

Highly supercooled drizzle may be a common feature over Antarctica and the Southern Ocean

4 October 2019

Silber, Israel; Fridlind, Ann M.

Supported by: ARM ASR

Research area: Cloud-Aerosol-Precipitation Interactions

Drizzle redistributes water in the atmospheric column, and thereby influences cloud life cycle, optical depth, and surface radiative forcing. The rarity of reports of brief and spatially limited drizzle at temperatures below -20°C suggests that riming and temperature-dependent cloud microphysical processes such as heterogeneous ice nucleation and depositional growth conspire [...]

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Investigating seasonal deposition of dust along arctic rivers

12 September 2019

de Boer, Gijs

Supported by: ARM ASR

Research area: Radiation Processes

This study investigates the seasonal appearance of dark material along river beds in northern Alaska, which reduces the surface reflectivity in these areas, enhancing absorption of solar radiation. This deposition is demonstrated to be associated with high-wind events and is shown to accelerate seasonal snow melt over and around the river [...]

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Observational and modeling study of ice hydrometeor radar dual-wavelength ratios

6 September 2019

Matrosov, Sergey; de Boer, Gijs

Supported by: ARM ASR

Research area: Cloud Processes

This study demonstrates that in ice clouds and precipitation the difference between reflectivities at two cloud radar frequencies (i.e., the dual-wavelength ratio, or DWR) and absolute reflectivity, Z, at lower frequency are well correlated. A rate of the DWR increase with increasing Z can be used to infer information on [...]

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