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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Even at High Humidity, Aerosols Stick Around: Slowly Evaporating Particles Refute Assumption

Feb 23, 2015 Funded By: ASR

Ubiquitous carbon-rich aerosol particles created by emissions from cars, trees, and other sources alter our climate and affect air quality. Until recently, the properties of these aerosols were hard to experimentally characterize, forcing computational models to rely on unsupported assumptions. For several years, scientists at Pacific Northwest National Laboratory (PNNL) have chipped away at these [...]

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Tall Clouds from Tiny Raindrops Grow

Feb 18, 2015 Funded By: ARM ASR

Big clouds get bigger and small clouds shrink may seem like a simple statement, but the myriad mechanisms behind how clouds are born, grow, and die are surprisingly complex. These very mechanisms may be key to understanding future weather patterns and global climate change. In a study published in the Journal of Geophysical Research: Atmospheres, [...]

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Modeling Dust as Component Minerals in the Community Atmosphere Model

Feb 11, 2015 Funded By: ASR

Desert dust affects Earth’s radiation balance, cloud formation and biogeochemical trace nutrient cycling. Including mineralogy of dust in climate models is important to understand these effects. Researchers, including a Department of Energy scientist at Pacific Northwest National Laboratory, found that ability to correctly include the mineralogy of dust in climate models is hindered by its [...]

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A Novel Approach for Introducing 3D Cloud Spatial Structure Into 1D Radiative Transfer

Feb 06, 2015 Funded By: ASR

Subgrid-scale variability is one of the main reasons why parameterizations are needed in large-scale models. Similarly, subpixel-scale cloud heterogeneity also plagues satellite retrievals of cloud and aerosol properties. Cloud heterogeneity, to some extent, can be represented by the so-called Independent Column Appoximation, i.e., the gridbox or pixel can be divided into many non-interactive subcolumns and [...]

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Long-Term Measurements of Submicrometer Aerosol Chemistry at SGP Using an ACSM

Feb 05, 2015 Funded By: ARM ASR

Aerosols are one of the greatest sources of uncertainty in radiative forcing climate model predictions. Co-located measurements of meteorology, radiation, and aerosols are needed to evaluate and improve treatments of aerosol processes in climate models. Measurements characterizing the chemical and physical properties of aerosols are particularly important for understanding sources and processes of aerosols in [...]

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