Τίτλος:
Regional atmospheric response to tropical Pacific SST perturbations
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
An extended domain limited area model was implemented for seasonal-range simulations to assess the effect of tropical Pacific SST perturbations on weather patterns over Europe and Mediterranean. The experimental method consisted of Skiron/Eta model integrations with coarse and fine grid increment using artificially-modified as well as analysis SST forcing. The selected period was August-October 1997. Model simulations with coarse grid increment produced a weak signal in the precipitation pattern and the synoptic scale circulation over Europe, implying a damping of the North Atlantic atmospheric response to the tropical Pacific SST perturbation. Fine resolution experiments suggested an amplified dynamic response providing a direct link between tropical Pacific SST and North Atlantic synoptic circulation. The output signal is mainly attributed to the effective representation of the regional/ mesoscale atmospheric features due to the model implementation with a fine mesh grid. Copyright 2005 by the American Geophysical Union.
Συγγραφείς:
Katsafados, P.
Papadopoulos, A.
Kallos, G.
Περιοδικό:
GEOPHYSICAL RESEARCH LETTERS
Λέξεις-κλειδιά:
Atmospheric movements; Computer simulation; Damping; Dynamic response; Mathematical models; Perturbation techniques; Precipitation (meteorology); Earth sciences; Geophysics, Atmospheric response; Precipitation patterns; SST perturbations; Synoptic scale circulation, Weather forecasting; Tropics, air-sea interaction; climate modeling; sea surface temperature, Atmospheric response; Experimental methods; Limited area models; Model implementation; Precipitation patterns; SST perturbations; Synoptic circulations; Synoptic scale circulation
DOI:
10.1029/2004GL021828
