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RISEurasian Cold Air Outbreaks under Different Arctic Stratospheric Polar Vortex Strengths
Publisher: American Meteorological Society
Abstract: AbstractThis study analyzes the differences and similarities of Eurasian cold air outbreaks (CAOs) under the weak (CAOW), strong (CAOS), and neutral (CAON) stratospheric polar vortex states and examines the potential links ...
A Modeling Study and Scaling Analysis of Orographic Effects on Boundary Layer Shallow Convection
Publisher: American Meteorological Society
Abstract: Effects of orography on boundary layer shallow convection under various background winds are studied using a two-dimensional model together with scaling analysis. Under a motionless background state the flow response over ...
Observations and Numerical Simulation of Atmospheric Cellular Convection over Mesoscale Topography
Publisher: American Meteorological Society
Abstract: Radar and satellite images provide observations of convective rolls and other structures in the convective boundary layer (CBL), but the data are intermittent, and neither radar nor satellite gives a complete picture of ...
The Influence of ENSO on Northern Midlatitude Ozone during the Winter to Spring Transition
Publisher: American Meteorological Society
Abstract: he influence of El Niño?Southern Oscillation (ENSO) on northern midlatitude ozone during the period January?March (JFM) is investigated using various observations and a chemistry?climate model. The analysis reveals that, ...
Longitudinal Asymmetric Trends of Tropical Cold-Point Tropopause Temperature and Their Link to Strengthened Walker Circulation
Publisher: American Meteorological Society
Abstract: he zonal structure of trends in the tropical tropopause layer during 1979?2014 is investigated by using reanalysis datasets and chemistry?climate model simulations. The analysis herein reveals that the tropical cold-point ...
Impact of Sea Ice Reduction in the Barents and Kara Seas on the Variation of the East Asian Trough in Late Winter
Publisher: American Meteorological Society
Effect of Madden–Julian Oscillation Occurrence Frequency on the Interannual Variability of Northern Hemisphere Stratospheric Wave Activity in Winter
Publisher: American Meteorological Society
Abstract: AbstractThis study uses reanalysis datasets and numerical experiments to investigate the influence of the occurrence frequency of the individual phases of the Madden?Julian oscillation (MJO) on the interannual variability ...
The Corresponding Tropospheric Environments during Downward-Extending and Nondownward-Extending Events of Stratospheric Northern Annular Mode Anomalies
Publisher: American Meteorological Society
Abstract: AbstractUsing the NCEP?NCAR reanalysis dataset, this study classifies stratospheric northern annular mode (NAM) anomalies during the negative or positive phase into two categories?anomalies extending into the troposphere ...
Impacts of April Stratosphere–Troposphere Coupling on the South Asian Premonsoon Circulation
Publisher: American Meteorological Society
Observing Coherent Boundary Layer Motions Using Remote Sensing and Surface Pressure Measurement
Publisher: American Meteorological Society
Abstract: In this paper, high-frequency pressure time series measured by microbarographs are used to extract information on the existence and characteristics of convective rolls in the convective boundary layer. Rolls are identified ...