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RISOceanic Forcing of the Wintertime Low-Frequency Atmospheric Variability in the North Atlantic European Sector: A Study with the ARPEGE Model
Publisher: American Meteorological Society
Abstract: The relationship between global sea surface temperatures (SSTs) and the North Atlantic?Europe (NAE) atmospheric circulation is investigated using an ensemble of eight simulations with the ARPEGE atmospheric global circulation ...
The Dynamical Influence of Separate Teleconnections from the Pacific and Indian Oceans on the Northern Annular Mode
Publisher: American Meteorological Society
Abstract: he northern annular mode (NAM) influences wintertime climate variability in the Northern Hemisphere, and understanding the processes controlling its sign and amplitude is of critical importance. Mounting evidence supports ...
Tropical Atlantic Influence on European Heat Waves
Publisher: American Meteorological Society
Abstract: Diagnostics combining atmospheric reanalysis and station-based temperature data for 1950?2003 indicate that European heat waves can be associated with the occurrence of two specific summertime atmospheric circulation ...
Investigating the Impact of Reemerging Sea Surface Temperature Anomalies on the Winter Atmospheric Circulation over the North Atlantic
Publisher: American Meteorological Society
Abstract: Extratropical SSTs can be influenced by the ?reemergence mechanism,? whereby thermal anomalies in the deep winter mixed layer persist at depth through summer and are then reentrained into the mixed layer in the following ...
Response of North Atlantic Ocean Circulation to Atmospheric Weather Regimes
Publisher: American Meteorological Society
Abstract: new framework is proposed for investigating the atmospheric forcing of North Atlantic Ocean circulation. Instead of using classical modes of variability, such as the North Atlantic Oscillation (NAO) or the east Atlantic ...
North Atlantic Winter Climate Regimes: Spatial Asymmetry, Stationarity with Time, and Oceanic Forcing
Publisher: American Meteorological Society
Abstract: The observed low-frequency winter atmospheric variability of the North Atlantic?European region and its relationship with global surface oceanic conditions is investigated based on the climate and weather regimes paradigm. ...
Clarifying the Relation between AMOC and Thermal Wind: Application to the Centennial Variability in a Coupled Climate Model
Publisher: American Meteorological Society
Revisiting the ENSO Teleconnection to the Tropical North Atlantic
Publisher: American Meteorological Society
Abstract: AbstractOne of the most robust remote impacts of El Niño?Southern Oscillation (ENSO) is the teleconnection to tropical North Atlantic (TNA) sea surface temperature (SST) in boreal spring. However, important questions still ...
Using Data and Intermediate Coupled Models for Seasonal-to-Interannual Forecasts
Publisher: American Meteorological Society
Abstract: This paper provides a detailed illustration that it is beneficial for ENSO forecasting to improve in priority the model parameterizations, instead of increasing only the consistency of the initial conditions with the coupled ...
Summer Sea Surface Temperature Conditions in the North Atlantic and Their Impact upon the Atmospheric Circulation in Early Winter
Publisher: American Meteorological Society
Abstract: The origin of the so-called summer North Atlantic ?Horseshoe? (HS) sea surface temperature (SST) mode of variability, which is statistically linked to the next winter's North Atlantic Oscillation (NAO), is investigated ...