Research Highlights

Highlights will be written for high-level accomplishments and published journal articles of ASR research. Each PI should submit one highlight per fiscal year. To send in a research highlight, please use the submittal form.

Balloon-borne Measurements Yield New Insights on Boundary Layer New Particle Formation
Nov 27, 2017       
New particles that form in the atmosphere can do so high above-ground before such events are observed by ground-based instruments. Once formed, these particles can take up significant amounts of water and become more liquid-like, which can impact the role that these particles play in atmospheric chemistry and cloud formation processes.

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Evaluating Land-atmosphere Coupling in Model Simulations
Nov 13, 2017       
The strength of the coupling of soil moisture with the lower atmosphere can influence regional surface temperature, evaporation, and precipitation. Researchers at LLNL, LBNL, and Argonne National Laboratories, and at NASA Goddard Space Flight Center, have investigated land-atmosphere coupling (LAC) strength over the U.S. Southern Great Plains (SGP) region, as estimated from multiple ARM field [...]

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Causes of Model Dry and Warm Bias over the SGP and Their Impact on Climate Projections
Oct 23, 2017       
To reduce uncertainties in the prediction of future climate change by numerical models, scientists strive to understand and reduce the model biases in the simulations of the present-day climate relative to observations. By using long-term measurements from the DOE ARM Climate Research Facility, the team identified the cause of a longstanding warm-model bias over the [...]

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Entrainment Rate Diurnal Cycle in Marine Stratiform Clouds
Oct 16, 2017       
Cloud entrainment, the mixing of non-turbulent cloud-free air at the edges of the cloud layer, is a central mechanism governing cloud lifecycles within the cloud-topped marine boundary layer. Cloud-top entrainment across the inversion base regulates the boundary-layer turbulence and growth, as well as the cloud cover and microphysical evolution in climatically important marine boundary-layer regimes. [...]

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A Clearer View of Mixed-Phase Conditions in Clouds
Oct 10, 2017       
Observing mixed-phase (liquid and ice) conditions in clouds is a significant challenge. Cloud phase identification from lidar is one of the most trusted methods of identifying supercooled liquid. However, the lidar beam cannot see through optically thick clouds, so researchers get an incomplete picture of clouds. Scientists at the U.S. Department of Energy led a [...]

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