Journal of the Atmospheric Sciences: Recent submissions
Now showing items 1081-1100 of 13215
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Potentials in Improving Predictability of Multiscale Tropical Weather Systems Evaluated through Ensemble Assimilation of Simulated Satellite-Based Observations
(American Meteorological Society, 2018)AbstractAs a follow-up of our recent paper on the practical and intrinsic predictability of multiscale tropical weather and equatorial waves, this study explores the potentials in improving the analysis and prediction of ... -
The Behavior of Squall Lines in Horizontally Heterogeneous Coastal Environments
(American Meteorological Society, 2018)AbstractInland squall lines respond to the stable marine atmospheric boundary layer (MABL) as they move toward a coastline and offshore. As a storm?s cold pool collides with the marine layer, characteristics of both determine ... -
Scaling and Similarity of the Anisotropic Coherent Eddies in Near-Surface Atmospheric Turbulence
(American Meteorological Society, 2018)AbstractThe low-wavenumber regime of the spectrum of turbulence commensurate with Townsend?s ?attached? eddies is investigated here for the near-neutral atmospheric surface layer (ASL) and the roughness sublayer (RSL) above ... -
Primary Modes of Global Drop Size Distributions
(American Meteorological Society, 2018)AbstractUnderstanding drop size distribution (DSD) variability has important implications for remote sensing and numerical modeling applications. Twelve disdrometer datasets across three latitude bands are analyzed in this ... -
Observed Boundary Layer Controls on Shallow Cumulus at the ARM Southern Great Plains Site
(American Meteorological Society, 2018)AbstractThe boundary layer controls on shallow cumulus (ShCu) convection are examined using a suite of remote and in situ sensors at ARM Southern Great Plains (SGP). A key instrument in the study is a Doppler lidar that ... -
Broadening of Cloud Droplet Size Spectra by Stochastic Condensation: Effects of Mean Updraft Velocity and CCN Activation
(American Meteorological Society, 2017)AbstractThe authors study the condensational growth of cloud droplets in homogeneous isotropic turbulence by means of a large-eddy simulation (LES) approach. The authors investigate the role of a mean updraft velocity and ... -
The Use of Partial Cloudiness in a Bulk Cloud Microphysics Scheme: Concept and 2D Results
(American Meteorological Society, 2018)AbstractThe source and sink terms of microphysical processes vary nonlinearly with cloud condensate amount. Therefore, partial cloudiness is one of the important factors to be considered in a cloud microphysics scheme given ... -
The Role of WISHE in Secondary Eyewall Formation
(American Meteorological Society, 2018)AbstractNumerical simulations are conducted to examine the role of the wind-induced surface heat exchange (WISHE) mechanism in secondary eyewall formation (SEF). The control experiment exhibits a coherent secondary eyewall ... -
Dust Impacts on the 2012 Hurricane Nadine Track during the NASA HS3 Field Campaign
(American Meteorological Society, 2018)AbstractDuring the 2012 deployment of the NASA Hurricane and Severe Storm Sentinel (HS3) field campaign, several flights were dedicated to investigating Hurricane Nadine. Hurricane Nadine developed in close proximity to ... -
Calculating State-Dependent Noise in a Linear Inverse Model Framework
(American Meteorological Society, 2017)AbstractThe most commonly used version of a linear inverse model (LIM) is forced by state-independent noise. Although having several desirable qualities, this formulation can only generate long-term Gaussian statistics. ... -
Theoretical Analysis of Liquid–Ice Interaction in the Unsaturated Environment with Application to the Problem of Homogeneous Mixing
(American Meteorological Society, 2018)AbstractThe process of ice?liquid water interaction in the unsaturated environment is explored both analytically and with the help of a numerical simulation. Ice?liquid water interaction via the condensation?evaporation ... -
Investigating the Scale Adaptivity of a Size-Filtered Mass Flux Parameterization in the Gray Zone of Shallow Cumulus Convection
(American Meteorological Society, 2018)AbstractIn this study, the scale adaptivity of a new parameterization scheme for shallow cumulus clouds in the gray zone is investigated. The eddy diffusivity/multiple mass flux [ED(MF)n] scheme is a bin-macrophysics scheme ... -
New Treatment of Strongly Anisotropic Scattering Phase Functions: The Delta-M+ Method
(American Meteorological Society, 2017)AbstractThe treatment of strongly anisotropic scattering phase functions is still a challenge for accurate radiance computations. The new delta-M+ method resolves this problem by introducing a reliable, fast, accurate, and ... -
Erroneous Attribution of Deep Convective Invigoration to Aerosol Concentration
(American Meteorological Society, 2018)AbstractContiguous time?height cloud objects at the Department of Energy Atmospheric Radiation Measurement Southern Great Plains (SGP) site are matched with surface condensation nuclei (CN) concentrations and retrieved ... -
Assessment of Conditional Symmetric Instability from Global Reanalysis Data
(American Meteorological Society, 2018)AbstractSlantwise convection, the process by which moist symmetric instability is released, has often been linked to banded clouds and precipitation, especially in frontal zones within extratropical cyclones. Studies also ... -
Ultraclean Layers and Optically Thin Clouds in the Stratocumulus-to-Cumulus Transition. Part II: Depletion of Cloud Droplets and Cloud Condensation Nuclei through Collision–Coalescence
(American Meteorological Society, 2018)AbstractIn Part I, aircraft observations are used to show that ultraclean layers (UCLs) in the marine boundary layer (MBL) are a common feature of the stratocumulus-to-cumulus transition (SCT) region over the northeast ... -
Synoptic–Dynamic Climatology of the Aleutian High
(American Meteorological Society, 2018)AbstractA climatology of the anticyclone that commonly appears over the Aleutian Islands in the wintertime Northern Hemisphere stratosphere is presented. Applying a geometric moments technique to a reanalysis dataset and ... -
Ultraclean Layers and Optically Thin Clouds in the Stratocumulus-to-Cumulus Transition. Part I: Observations
(American Meteorological Society, 2018)AbstractA common feature of the stratocumulus-to-cumulus transition (SCT) is the presence of layers in which the concentration of particles larger than 0.1 ?m is below 10 cm?3. These ultraclean layers (UCLs) are explored ... -
Direct Numerical Simulations to Investigate Energy Transfer between Meso- and Synoptic Scales
(American Meteorological Society, 2018)AbstractUnderstanding the development of the atmospheric energy spectrum across scales is necessary to elucidate atmospheric predictability. In this manuscript, the authors investigate energy transfer between the synoptic ... -
Secondary Eyewall Formation and Concentric Eyewall Replacement in Association with Increased Low-Level Inner-Core Diabatic Cooling
(American Meteorological Society, 2018)AbstractThe role of increased diabatic cooling in secondary eyewall formation (SEF) and eyewall replacement cycle (ERC) is examined using idealized numerical simulation. The experiment with the low-level inner-core diabatic ...