Observed Teleconnections in Northern Winter: Subseasonal Evolution and Tropical Linkages ...

• Main Author: Baxter, Stephen Robert
• Format: Doctoral or Postdoctoral Thesis
• Language: English
• Published: Digital Repository at the University of Maryland 2016
• Subjects: Atmospheric sciences; Meteorology; Climate Variability; Madden-Julian Oscillation; North Atlantic Oscillation; North Pacific Oscillation; Teleconnections; Pacific; North Atlantic; North Atlantic oscillation
• Online Access: https://dx.doi.org/10.13016/m2gf6r; http://drum.lib.umd.edu/handle/1903/18195

Teleconnections refer to the climate variability links between non-contiguous geographic regions, and tend to be associated with variability in both space and time of the climate’s semi-permanent circulation features. Teleconnections are well-developed in Northern winter, when they influence subseasonal-to-seasonal climate variability, notably, in surface temperature and precipitation. This work is comprised of four independent studies that improve understanding of tropical-extratropical teleconnections and their surface climate responses, subseasonal teleconnection evolution, and the utility of teleconnections in attribution of extreme climate events. After an introduction to teleconnection analysis as well as the major teleconnection patterns and associated climatic footprints manifest during Northern winter, the lagged impact of the Madden-Julian Oscillation (MJO) on subseasonal climate variability is presented. It is found that monitoring of MJO-related velocity potential anomalies is sufficient to ...