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Northern Hemisphere Sea Level Pressure Synchronization And Its Effect On Northern Hemisphere Temperature Variability, Joshua Daniel Verbeten
Northern Hemisphere Sea Level Pressure Synchronization And Its Effect On Northern Hemisphere Temperature Variability, Joshua Daniel Verbeten
Theses and Dissertations
We consider monthly anomalies of zonally averaged sea level pressure (SLP) in the Northern Hemisphere (NH) from two reanalysis products. A measure of synchronization utilizing correlation coefficient in a five-year sliding window across all latitude pairs is computed over this data. It is found that there have been two NH SLP synchronization episodes since the 1890s, which are significant to approximately three standard deviations. Similar statistically significant synchronization events are seen in simulations of 42 global climate models (GCM) with the dominant synchronization pattern in GCMs proving dynamically consistent with observations. Furthermore, a GCM-based NH temperature anomaly composite shows a …