Meridional Eddy Sensible Heat Fluxes in the Extremes of the Pacific/North American Teleconnection Pattern

1992 ◽  
Vol 5 (2) ◽  
pp. 127-139 ◽  
Author(s):  
Jeffrey C. Rogers ◽  
Marilyn N. Raphael
Keyword(s):  
North American ◽  
Teleconnection Pattern ◽  
Heat Fluxes ◽  
Sensible Heat ◽  
Pacific North American ◽  
The Pacific

Synoptic analysis of the Pacific-North American teleconnection pattern

2011 ◽  
Vol 137 (655) ◽  
pp. 329-346 ◽  
Author(s):  
Christian Franzke ◽  
Steven B. Feldstein ◽  
Sukyoung Lee
Keyword(s):  
North American ◽  
Teleconnection Pattern ◽  
Pacific North American ◽  
Synoptic Analysis ◽  
The Pacific

Half-century perspectives on North American spring snowline and snow cover associations with the Pacific-North American teleconnection pattern

2018 ◽  
Vol 74 (3) ◽  
pp. 201-216 ◽  
Author(s):  
TJ Ballinger ◽  
RV Rohli ◽  
MJ Allen ◽  
DA Robinson ◽  
TW Estilow
Keyword(s):  
Snow Cover ◽  
North American ◽  
Teleconnection Pattern ◽  
Half Century ◽  
Pacific North American ◽  
The Pacific

scholarly journals Formation Mechanisms of the Pacific–North American Teleconnection with and without Its Canonical Tropical Convection Pattern

2017 ◽  
Vol 30 (9) ◽  
pp. 3139-3155 ◽  
Author(s):  
Ying Dai ◽  
Steven B. Feldstein ◽  
Benkui Tan ◽  
Sukyoung Lee
Keyword(s):  
North American ◽  
Wave Train ◽  
Dominant Role ◽  
Teleconnection Pattern ◽  
Wave Activity ◽  
Tropical Convection ◽  
Formation Mechanisms ◽  
Convection Pattern ◽  
Pacific North American ◽  
The Pacific

The mechanisms that drive the Pacific–North American (PNA) teleconnection pattern with and without its canonical tropical convection pattern are investigated with daily ERA-Interim and NOAA OLR data (the former pattern is referred to as the convective PNA, and the latter pattern is referred to as the nonconvective PNA). Both the convective and nonconvective positive PNA are found to be preceded by wave activity fluxes associated with a Eurasian wave train. These wave activity fluxes enter the central subtropical Pacific, a location that is favorable for barotropic wave amplification, just prior to the rapid growth of the PNA. The wave activity fluxes are stronger for the positive nonconvective PNA, suggesting that barotropic amplification plays a greater role in its development. The negative convective PNA is also preceded by a Eurasian wave train, whereas the negative nonconvective PNA grows from the North Pacific contribution to a circumglobal teleconnection pattern. Driving by high-frequency eddy vorticity fluxes is largest for the negative convective PNA, indicating that a positive feedback may be playing a more dominant role in its development. The lifetimes of convective PNA events are found to be longer than those of nonconvective PNA events, with the former (latter) persisting for about three (two) weeks. Furthermore, the frequency of the positive (negative) convective PNA is about 40% (60%) greater than that of the positive (negative) nonconvective PNA.

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