Variability and Trends of Global Atmospheric Frontal Activity and Links with Large-Scale Modes of Variability
Irina Rudeva, Ian Simmonds
JOURNAL OF CLIMATE | AMER METEOROLOGICAL SOC | Published : 2015
Presented here is a global analysis of frontal activity variability derived from ERA-Interim data over the 34-yr period of January 1979-March 2013 using a state-of-the-art frontal tracking scheme. In December- February over that epoch, there is a northward shift of frontal activity in the Pacific in the NorthernHemisphere (NH). In the Southern Hemisphere (SH), the largest trends are identified in the austral summer and are manifested by a southward shift of frontal activity over the Southern Ocean. Variability of frontal behavior is found to be closely related to the main modes of atmospheric circulation, such as the North Atlantic Oscillation (NAO) for the Atlantic-European sector in the NH..View full abstract
The authors thank Kevin Keay for his help in setting up the frontal identification scheme. We are grateful to two anonymous reviewers, whose insightful comments helped to improve the original manuscript. Parts of this research were made possible by a grant from the Australian Research Council.