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RISInterannual Variations of the Stratosphere and Troposphere during Northern Winter as Simulated by WACCM
Publisher: American Meteorological Society
Abstract: This study explores interannual variations (IAVs) of the stratosphere and troposphere during Northern Hemisphere (NH) winter using a 50-yr simulation of Sassi et al. with the Whole Atmosphere Community Climate Model (WACCM). ...
Predictability of Major Stratospheric Sudden Warmings: Analysis Results from JMA Operational 1-Month Ensemble Predictions from 2001/02 to 2012/13
Publisher: American Meteorological Society
Abstract: his study investigates the predictability of major stratospheric sudden warmings (MSSWs) with a chief question: how far in advance can MSSWs be forecasted? An average picture and case-to-case variations of the MSSW ...
Wave Driving in the Tropical Lower Stratosphere as Simulated by WACCM. Part I: Annual Cycle
Publisher: American Meteorological Society
Abstract: This study explores the climatological annual cycle of temperature, circulation, and wave driving distributions in the tropical lower stratosphere as produced in a 50-yr simulation of the Whole Atmosphere Community Climate ...
Wave Driving in the Tropical Lower Stratosphere as Simulated by WACCM. Part II: ENSO-Induced Changes for Northern Winter
Publisher: American Meteorological Society
Abstract: This study investigates ENSO-induced changes in the tropical lower stratosphere for northern winter as simulated by the Whole Atmosphere Community Climate Model (WACCM). A comparison is made between two 3650-day perpetual ...
Predictability of Major Stratospheric Sudden Warmings of the Vortex Split Type: Case Study of the 2002 Southern Event and the 2009 and 1989 Northern Events
Publisher: American Meteorological Society
Abstract: his study investigates the predictability of three major stratospheric sudden warmings (MSSWs) of the vortex split type: the Southern Hemisphere case in September 2002 and two Northern Hemisphere cases in January 2009 and ...
Tropospheric Response to Stratospheric Sudden Warmings in a Simple Global Circulation Model
Publisher: American Meteorological Society
Abstract: A composite analysis is made of 132 stratospheric sudden warming (SSW) events obtained in a 10?000-day integration with a simple global circulation model under a perpetual-winter condition. The analysis confirms general ...
Stratospheric Predictability: Basic Characteristics in JMA 1-Month Hindcast Experiments for 1979–2009
Publisher: American Meteorological Society
Abstract: his study investigates basic characteristics of stratospheric predictability in the Northern Hemisphere using 1-month hindcast (HC) experiment data from the Japan Meteorological Agency for 1979?2009. The author describes ...
Is There a Statistical Connection between Stratospheric Sudden Warming and Tropospheric Blocking Events?
Publisher: American Meteorological Society
Abstract: This paper presents statistical analyses of possible associations between major stratospheric sudden warming (SSW) and tropospheric blocking events in the Northern Hemisphere (NH) with 49 yr of NCEP?NCAR reanalysis data ...
Seasonal Winter Forecasts of the Northern Stratosphere and Troposphere: Results from JMA Seasonal Hindcast Experiments
Publisher: American Meteorological Society
Abstract: AbstractThis study investigates winter forecasts of the northern stratosphere and troposphere using seasonal hindcast experiments of the Japan Meteorological Agency (JMA). A main focus is placed on the seasonal forecasts ...
Internal Interannual Variability of the Troposphere–Stratosphere Coupled System in a Simple Global Circulation Model. Part I: Parameter Sweep Experiment
Publisher: American Meteorological Society
Abstract: Internal variations of the troposphere?stratosphere coupled system with intraseasonal and interannual timescales are investigated in a parameter sweep experiment with a simple global circulation model under a periodic ...