Journal ArticleDOI
Classification, seasonality and persistence of low-frequency atmospheric circulation patterns
TLDR
In this article, Orthogonally rotated principle component analysis (RPCA) was used to identify and describe the seasonality and persistence of the major modes of interannual variability.Abstract:
Orthogonally rotated principle component analysis (RPCA) of Northern Hemisphere 1-month mean 700 mb heights is used to identify and describe the seasonality and persistence of the major modes of interannual variability. The analysis is detailed and comprehensive, in that 1) a high resolution, approximately equal-area 358-point grid is used for the virtually maximum possible 35-year period of record, 2) a positive bias in the NMC data base in the early 1950s in the subtropics is largely eliminated for the first time, and 3) homogeneous, separate analyses of each month of the year are carried out, detailing the mouth-to-month changes in the dominant circulation patterns. Winter results are similar to those of other recent RPCA and teleconnection studies except that some less obvious patterns are identified and further detail of the better-known patterns is provided. Two north-south dipole patterns are found over the Pacific Ocean (West Pacific Oscillation and East Pacific pattern) and over the Atla...read more
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Journal ArticleDOI
Reconstruction of sea level pressure fields over the Eastern North Atlantic and Europe back to 1500
Jürg Luterbacher,Elena Xoplaki,Daniel Dietrich,Ralph Rickli,Jucundus Jacobeit,Christoph Beck,Dimitrios Gyalistras,Christoph Schmutz,Heinz Wanner +8 more
TL;DR: In this paper, the authors presented reconstructions of gridded monthly sea level pressure (SLP) fields back to 1659 and seasonal reconstructions from 1500-1658 for the eastern North Atlantic-European region (30°W to 40°E; 30°N to 70°N).
Journal ArticleDOI
Spatial and temporal patterns of annual precipitation variability over the Iberian Peninsula
TL;DR: In this article, the spatial and temporal variability of the annual precipitation observations over the Iberian Peninsula (IP) for 47 years and 51 stations was examined in order to characterise the variability.
Journal ArticleDOI
The Timescale, Power Spectra, and Climate Noise Properties of Teleconnection Patterns
TL;DR: In this article, the power spectral, timescale, and climate noise properties of the dominant atmospheric teleconnection patterns were examined using NCEP-NCAR reanalysis data covering the boreal winters of 1958-97.
Journal ArticleDOI
Atmospheric bridge, oceanic tunnel, and global climatic teleconnections
Zhengyu Liu,Michael A. Alexander +1 more
TL;DR: In this paper, the authors review teleconnections within the atmosphere and ocean, their dynamics and their role in coupled climate variability, and discuss the timescales of several teleconnection processes.
Journal ArticleDOI
The North Pacific Oscillation–West Pacific Teleconnection Pattern: Mature-Phase Structure and Winter Impacts
Megan E. Linkin,Sumant Nigam +1 more
TL;DR: In this article, the authors identified the mature phase expression of the NPO/WP from principal component analysis of monthly sea level pressure variability as the second leading mode just behind the Pacific-North American variability pattern.
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