Intraseasonal Variability of the Winter Circulation in the Southern Hemisphere Atmosphere.

Details Intraseasonal Variability of the Winter Circulation in the Southern Hemisphere Atmosphere. Intraseasonal Variability of the Winter Circulation in the Southern Hemisphere Atmosphere.

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jats...48.1387m&link_type=abstract

Journal of Atmospheric Sciences, vol. 48, Issue 11, pp.1387-1404

Other

7

Scientific paper

The intraseasonal variability of the Southern Hemisphere stratosphere and troposphere is studied using multilevel geopotential height data for nine winters (1979-87). The study uses empirical orthogonal function (EOF) analysis of unfiltered data at five tropospheric and five stratospheric levels.The four leading EOFs at all tropospheric levels exhibit the patterns previously detected at 500 mb. Study of the corresponding principal components (PCs) at each level shows that the quasi-stationary anomalies associated with the leading EOFs are equivalent barotropic and exhibit no preference for early, middle or late winter.The five leading EOFs in the stratosphere fall into two classes. The first three EOFs at all levels form the first class. This class represents anomalies that are dominated by zonal wavenumber one (wave 1), exhibit strong westward tilt with height and travel slowly eastward or remain stationary. Most cases of large, persistent PC values for this class occur in early winter. The fourth and fifth EOFs form the other class. This class represents anomalies that are dominated by wavenumber two, and tilt noticeably, but less strongly than the first class, westward with height. These anomalies tend to develop mostly in late winter and to travel eastward more rapidly. The intraseasonal variability in the stratosphere resides therewith, as expected, in structures dominated by the longest planetary waves.No systematic connections between tropospheric and stratospheric persistent anomalies are apparent in the dataset.

Affiliated with

Also associated with

No associations

Rating

Intraseasonal Variability of the Winter Circulation in the Southern Hemisphere Atmosphere. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Intraseasonal Variability of the Winter Circulation in the Southern Hemisphere Atmosphere., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intraseasonal Variability of the Winter Circulation in the Southern Hemisphere Atmosphere. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1284463