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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Radiative and Thermodynamic Responses to Uncertainty in Aerosol Extinction Profiles

Jan 18, 2016 Funded By: ARM ASR

Aerosol radiative effects are of great importance for climate simulations over South Asia. For quantifying aerosol direct radiative effect, aerosol optical depth (AOD) and single scattering albedo (SSA) are often compared with observations. These comparisons have revealed large AOD underestimation and SSA overestimation in models over this region. Aerosol vertical distributions have received less scrutiny [...]

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A New Model for Liquid Water Absorption

Jan 08, 2016 Funded By: ARM ASR

Liquid water path (LWP) is a critical measurement for a wide range of atmospheric studies, as the amount of liquid in a cloud is critical to understanding many cloud processes. For example, the radiative impact of the cloud (in both the longwave and shortwave portions of the spectrum) depends heavily on the LWP. Thus, [...]

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The Role of Shallow Cloud Moistening in MJO and Non-MJO Convective Events over the ARM Manus Si

Dec 11, 2015 Funded By: ARM

Moistening by shallow clouds has been assumed to be partially responsible for the observed increase in low-level moisture leading to convective peaks of the Madden-Julian Oscillation (MJO). In this study, we move beyond the argument for the moistening role of shallow clouds in the MJO that is simply based on simultaneous increases in both low-level [...]

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Evaluation of Subgrid-Scale Hydrometeor Transport Using a High-Resolution CRM

Dec 11, 2015 Funded By: ARM ASR

Clouds moderate the climate system through direct impact on surface hydrology, as gatekeepers for the sun’s energy-in/energy-out flux, and by stabilizing the atmosphere through vertical redistribution of heat and moisture. Turbulent convective clouds and storms are especially efficient at moving moisture and heat in the atmosphere. But because the structure of these clouds is not [...]

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An Improved Hindcast Approach for Evaluation and Diagnosis of Physical Processes in GCMs

Nov 23, 2015 Funded By: ARM ASR

Performing short integrations of atmospheric climate models initialized with the analyses from numerical weather prediction centers (i.e. the Transpose-AMIP or CAPT approach) is now a widely accepted and used technique to diagnose the contribution of fast physical processes in the atmosphere to long-term errors in climate simulations. Nevertheless, one of the major challenges for using [...]

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