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.

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Spectrally Invariant Properties of Clouds in Transition Zones During the MAGIC Field Campaign

Sep 27, 2016 Funded By: ARM ASR

Knowledge of the variability of cloud properties in transition zones (regions between the definitely cloudy and clear sky columns) would help us understand how microphysical properties of clouds can affect cloud-aerosol interactions and how the clouds are mixed during the entrainment of dry air. This paper uses the spectrally invariant method to analyze [...]

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Regional Influence of Aerosol Emissions from Wildfires Driven by Combustion Efficiency

Sep 27, 2016 Funded By: ARM ASR

During our study we found that combustion processes of wildfires strongly influence organic aerosol concentrations and properties on a regional scale and that more flaming burns emit less aerosol mass but more oxidized organic aerosol. We also found that secondary organic aerosol formation in wildfire plumes may have been balanced by primary organic aerosol evaporation, [...]

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Black Carbon Aerosols Alter Cloud Microphysical Properties

Sep 22, 2016 Funded By: ASR

Black carbon is usually mixed with other aerosol species within individual aerosol particles. To accurately simulate the impact of black-carbon-containing aerosol particles on clouds, it is important to represent particle composition. Neglecting this information causes errors in the prediction of cloud droplet number concentration and droplet sizes, and of the amount of black carbon that [...]

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A Major Artifact in Aerosol-Cloud-Interaction Studies Discovered from Azores Measurements

Sep 21, 2016 Funded By: ARM

Using 19 months of cloud and aerosol measurements made on Graciosa Island in the Azores, the response of marine boundary layer (MBL) non-precipitating cloud properties to changes in aerosol loading is examined. How meteorological parameters affect the diversity in the sensitivity of these MBL clouds to aerosol perturbations and the magnitude of the aerosol first [...]

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The Details of the Growth of Atmospheric Particles to Climate-relevant Sizes

Sep 01, 2016 Funded By: ARM ASR

Freshly nucleated particles in the atmosphere , ~1 nm in diameter, form from low-volatility gaseous species. These particles can either grow to climate-relevant sizes, larger than 50-100 nm in diameter, or are lost by coagulation with larger particles. If a particle reaches a climate-relevant size, it can affect climate through efficiently scattering or absorbing radiation [...]

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