18th Conference on Climate Variability and Change


Development of nor'easters during El Niņo years

Lynne M. Hoppe, United States Naval Academy, Annapolis, MD; and D. R. Smith

A significant wintertime event along the East Coast is a marine cyclone called the Nor'easter. These storms occur when cold air from the continent interacts with warm air and water just offshore, associated with the Gulf Stream. This paper investigates whether El Niņo events have any influence on the development of such storms. This paper looks at winter storms for the 1983-84, 1997-98, and 2004-05 events. The number of extratropical cyclones, intensity of these cyclones and the central and minimum pressures of the cyclones were gathered. By comparing these data, conclusions were made regarding the generation and movement of Nor'easter storms. The storms during El Nino events were pushed further south due to the jet stream being pushed further south. The frequency of storms increased during strong El Niņo years (e.g., 1983-'84 or 1997-'98). Although the is ability to predict when or where these storms will occur is difficult at best, this study provides clues to better understand the effect of El Niņo on these extratropical marine cyclones.

extended abstract  Extended Abstract (2.3M)

Poster Session 2, Observed seasonal to interannual climate variability and climate applications
Wednesday, 1 February 2006, 2:30 PM-4:00 PM, Exhibit Hall A2

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