Journal of the Atmospheric Sciences: Recent submissions
Now showing items 321-340 of 13215
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Large-Scale Coherent Turbulence Structures in the Atmospheric Boundary Layer over Flat Terrain
(American Meteorological Society, 2022)We investigate characteristics of large-scale coherent motions in the atmospheric boundary layer using field measurements made with two long-range scanning wind lidars. The joint scans provide quasi-instantaneous wind ... -
The Impact of Land Surface Properties on Haboobs and Dust Lofting
(American Meteorological Society, 2022)Haboobs are dust storms formed by strong surface winds in convective storm outflow boundaries, or cold pools, which can loft large quantities of mineral dust as they propagate. Both cold pools and the dust they loft are ... -
What Determines Above-Anvil Cirrus Plume Infrared Temperature?
(American Meteorological Society, 2022)Above-anvil cirrus plumes (AACPs) in midlatitude convection are important indicators of severe storms and stratospheric hydration events. Recent studies of AACPs have shown large variability in their characteristics, ... -
Comprehensive Satellite Observations and a Numerical Study of a Wintertime Shallow Sea Smoke Event in the Yellow Sea
(American Meteorological Society, 2022)A winter storm triggered a significant sea smoke with the northwesterly wind to the Yellow Sea, China, on 7 January 2021. The ocean responses to this event lasted about 3 days. Satellite observations show that the sea ... -
Sources of Stochasticity in the Growth of Cloud Droplets: Supersaturation Fluctuations versus Turbulent Transport
(American Meteorological Society, 2022)The role played by fluctuations of supersaturation in the growth of cloud droplets is examined in this study. The stochastic condensation framework and the three regimes of activation of cloud droplets— namely, mean dominant, ... -
An Analytical Solution of the Effective-Buoyancy Equation
(American Meteorological Society, 2022)The effective buoyancy per unit volume is the statically forced part of the local nonhydrostatic upward pressure-gradient force. It is important because it does not depend on the basic-state density defined with the anelastic ... -
Dependence of Ice Crystal Size Distributions in High Ice Water Content Conditions on Environmental Conditions: Results from the HAIC-HIWC Cayenne Campaign
(American Meteorological Society, 2022)A new method that automatically determines the modality of an observed particle size distribution (PSD) and the representation of each mode as a gamma function was used to characterize data obtained during the High Altitude ... -
Studies of Stable Stratification Effect on Dynamic and Thermal Roughness Lengths of Urban-Type Canopy Using Large-Eddy Simulation
(American Meteorological Society, 2022)Large-eddy simulations (LES) of neutrally and stably stratified turbulent flows over urban-type surfaces with relatively low plan area ratios are presented. Numerical experiments were performed for different shapes of ... -
Controls on the Development and Circulation of Terminal versus Transient Congestus Clouds and Implications for Midlevel Aerosol Transport
(American Meteorological Society, 2022)Cumulus congestus is the middle mode of tropical convection, with cloud tops around or exceeding the 0°C level (∼5 km AGL). While some congestus are terminal, meaning capped by the 0°C stable layer, others are transient ... -
What Controls Local Entrainment and Detrainment Rates in Simulated Shallow Convection?
(American Meteorological Society, 2022)The lack of consensus as to how entrainment and detrainment must be represented in convection parameterizations highlights the need for in-depth investigations of the processes driving lateral mixing in clouds. Direct ... -
Dynamic Pressure Drag on Rising Buoyant Thermals in a Neutrally Stable Environment
(American Meteorological Society, 2022)This study examines dynamic pressure drag on rising dry buoyant thermals. A theoretical expression for drag coefficient -
First Detection of the Pekeris Internal Global Atmospheric Resonance: Evidence from the 2022 Tonga Eruption and from Global Reanalysis Data
(American Meteorological Society, 2022)We used observations and model simulation to examine the atmospheric pulses that dominate the far field in the hours after the January 2022 Tonga eruption. We analyzed radiance observations taken from the -
Tropical Cyclone Potential Size
(American Meteorological Society, 2022)A model for tropical cyclone (TC) potential size (PS), which is capable of predicting the equilibrium outer radius of a TC solely from environmental parameters, is proposed. The model combines an updated Carnot cycle model ... -
Precipitation Growth Processes in the Comma-Head Region of the 7 February 2020 Northeast Snowstorm: Results from IMPACTS
(American Meteorological Society, 2022)On 7 February 2020, precipitation within the comma-head region of an extratropical cyclone was sampled remotely and in situ by two research aircraft, providing a vertical cross section of microphysical observations and ... -
Estimating Phase Transition Rates in Shallow Cumulus Clouds from Mass Flux. Part I: Theory and Numerical Simulations
(American Meteorological Society, 2022)The system of trade wind cumulus clouds observed during the RICO field project was simulated by an LES model in a domain of the size of a mesoscale model grid. More than 2000 clouds were analyzed by stratifying them by ... -
Impact of Cloud-Base Turbulence on CCN Activation: CCN Distribution
(American Meteorological Society, 2022)Following our previous investigation of the turbulence impact on cloud-base single-size CCN activation, this study considers a similar problem assuming CCN size distribution obtained from field measurements. The total CNN ... -
Assessing Raindrop Breakup Parameterizations Using Disdrometer Observations
(American Meteorological Society, 2022)An intercomparison of raindrop mean diameter frequency distribution (RDFD) is performed for numerical simulations of precipitating cloud systems using an array of models and microphysics schemes. This includes results from ... -
Influence of Entrainment on Centimeter-Scale Cloud Microphysics in Marine Stratocumulus Clouds Observed during CSET
(American Meteorological Society, 2022)Cloud microphysical relationships observed during the Cloud System Evolution in the Trades (CSET) campaign held between Northern California and Hawaii were analyzed to study the effects of entrainment and subsequent mixing ... -
Convective Couplings with Equatorial Rossby Waves and Equatorial Kelvin Waves. Part II: Coupled Precipitation Characteristics
(American Meteorological Society, 2022)Detailed precipitation characteristics coupled with equatorial Rossby and Kelvin waves are investigated. We prepare a rainfall event dataset using the Tropical Rainfall Measurement Mission (TRMM) Precipitation Radar (PR) ... -
Convectively Generated Negative Potential Vorticity Enhancing the Jet Stream through an Inverse Energy Cascade during the Extratropical Transition of Hurricane Irma
(American Meteorological Society, 2022)A tropical cyclone (TC) that recurves into the midlatitudes can lead to significant downstream flow amplification by way of a favorable interaction with the midlatitude waveguide. Current conceptualizations emphasize the ...