منابع مشابه
Precision southern hemisphere VLBI pulsar astrometry II: measurement of seven parallaxes
Accurate measurement of pulsar distances via astrometry using very long baseline interferometry enables the improvement of Galactic electron density distribution models, improving distance estimates for the vast majority of pulsars for which parallax measurements are unavailable. However, pulsars at southern declinations have been under–represented in previous interferometric astrometry campaig...
متن کاملPotential for Southern Hemisphere climate surprises
Climate model results suggest that future climate change in Antarctica will be accompanied by continued strengthening and poleward contraction of the Southern Ocean westerly wind belt. Paleoclimate records suggest past changes in the westerly winds can be abrupt and that healing of the Antarctic ozone hole could lead to poleward contraction of the westerlies and increased meridional atmospheric...
متن کاملFinal warming of the Southern Hemisphere polar
6 The final warming date of the polar vortex is a key component of 7 Southern Hemisphere stratospheric and tropospheric variability in spring 8 and summer. We examine the effect of external forcings on Southern 9 Hemisphere final warming date, and the sensitivity of any projected changes 10 to model representation of the stratosphere. Final warming date is cal11 culated using a temperature-base...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1991
ISSN: 0252-9211
DOI: 10.1017/s0252921100064150