Tropical Atlantic air-sea interaction and its influence on the NAO

Details Tropical Atlantic air-sea interaction and its influence on the NAO Tropical Atlantic air-sea interaction and its influence on the NAO

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.1507o&link_type=abstract

Geophysical Research Letters, Volume 28, Issue 8, p. 1507-1510

Physics

50

Global Change: Climate Dynamics, Meteorology And Atmospheric Dynamics: Climatology, Meteorology And Atmospheric Dynamics: Ocean/Atmosphere Interactions, Oceanography: General: Climate And Interannual Variability

Scientific paper

An atmospheric general circulation model (AGCM) is forced with a prescribed SST dipole anomaly in the tropical Atlantic to investigate the cause of cross-equatorial SST gradient (CESG) variability and its teleconnection to the extratropics. The model response bears a striking resemblance to observations in both the tropics and extratropics. The tropical response is robust and can act to reinforce the prescribed SST anomalies through wind-induced evaporation. A new feedback mechanism involving low-level stratiform clouds in the subtropics is also identified in the model and observations. The tropical SST dipole forces a barotropic teleconnection into the extratropics that projects onto the North Atlantic Oscillation (NAO). It further induces the extratropical portion of the North Atlantic SST tripole when the AGCM is coupled with an ocean mixed layer model. CESG variability thus appears to be the center-piece of a pan-Atlantic climate pattern observed to extend from the South Atlantic to Greenland.

Affiliated with

Also associated with

No associations

Rating

Tropical Atlantic air-sea interaction and its influence on the NAO does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tropical Atlantic air-sea interaction and its influence on the NAO, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tropical Atlantic air-sea interaction and its influence on the NAO will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1185711