Dynamic Instability of the Stratospheric Polar Vortex
نویسندگان
چکیده
منابع مشابه
investigation of the climatological effects of the stratospheric polar vortex in southwest asia
the relationship between the stratospheric conditions and evolution, and the surface weather, not only has revolutionized our understanding of the functions of different atmospheric layers and their dynamics, but has also brought about potential implications for weather and climate predictions in almost any region of the planet. obtaining a better understanding of the field, particularly in sou...
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[1] Southern Hemisphere (SH) polar mesospheric clouds (PMCs), also known as noctilucent clouds, have been observed to be more variable and, in general, dimmer than their Northern Hemisphere (NH) counterparts. The precise cause of these hemispheric differences is not well understood. This paper focuses on one aspect of the hemispheric differences: the timing of the PMC season onset. Observations...
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We conduct a statistical analysis of 51 years of NCEP/NCAR Reanalysis data to isolate the separate effects of the 11-year solar cycle (SC) and the equatorial Quasi-Biennial Oscillation (QBO) on the Northern Hemisphere stratosphere in late winter (February-March). In a four-group (SC-max vs. -min and eastvs. west-phase QBO) linear discriminant analysis, the state of the westerly phase QBO (wQBO)...
متن کاملResponse of the northern stratospheric polar vortex to the seasonal alignment of QBO phase transitions
[1] This study considers the strength of the Northern Hemisphere Holton-Tan effect (HTE) in terms of the phase alignment of the quasi-biennial oscillation (QBO) with respect to the annual cycle. Using the ERA-40 Reanalysis, it is found that the early winter (Nov–Dec) and late winter (Feb–Mar) relation between QBO phase and the strength of the stratospheric polar vortex is optimized for subsets ...
متن کاملThe Effect of Tropospheric Jet Latitude on Coupling between the Stratospheric Polar Vortex and the Troposphere
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ژورنال
عنوان ژورنال: Journal of the Meteorological Society of Japan. Ser. II
سال: 1967
ISSN: 0026-1165,2186-9057
DOI: 10.2151/jmsj1965.45.5_409