Results 31 to 40 of about 681 (182)

Scaling of Eliassen‐Palm flux vectors

Atmospheric Science Letters, 2021
Eliassen‐Palm flux is one of the main diagnostics tools for wave propagation and wave‐mean flow interaction in atmospheric dynamics and in particular stratosphere‐troposphere coupling.
Martin Jucker
doaj   +1 more source

Stratosphere-troposphere coupling during stratospheric extremes in the 2022/23 winter

Weather and Climate Extremes, 2023
Using the ERA5 reanalysis, sea surface temperature, sea ice observations, and the real-time multivariate Madden-Julian Oscillation (MJO) index, the evolution of the stratospheric extreme circulation in the winter of 2022/2023 is explored.
Qian Lu, Jian Rao, Chunhua Shi, Rongcai Ren, Yimin Liu, Siming Liu   +5 more
doaj   +1 more source

Issues in Stratosphere-troposphere Coupling.

Journal of the Meteorological Society of Japan. Ser. II, 2002
An overview is given of current issues concerning the coupling between the stratosphere and troposphere. The tropopause region, more generally the upper troposphere/lower stratosphere, is the region of direct contact where exchange of material takes place.
openaire   +2 more sources

Climatic variability of the stratosphere-troposphere coupling during the last decades [PDF]

Вестник КРАУНЦ. Физико-математические науки, 2021
В данной работе показано, как изменялось взаимодействие между тропосферой и стратосферой в последние десятилетия. Также оценено влияние таких явлений, как квазидвухлетнее колебание (КДК) на данное взаимодействие. Для этого было проанализировано распространение планетарных волн в атмосфере с использованием трехмерных потоков волновой активности ...
openaire   +1 more source

Scaling turbulence drives the general circulation

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The NOAA Gulfstream SP4, which deployed the GPS dropsondes over the NE Pacific Ocean as part of the Winter Storms Project during the January–March periods of 2004, 2005 and 2006. Abstract Statistical multifractal analysis of airborne and dropsonde observations is used to show that persistence of velocity after molecular collisions breaks the continuous
Adrian F. Tuck
wiley   +1 more source

The 1986–1989 ENSO cycle in a chemical climate model [PDF]

Atmospheric Chemistry and Physics, 2006
A pronounced ENSO cycle occurred from 1986 to 1989, accompanied by distinct dynamical and chemical anomalies in the global troposphere and stratosphere.
S. Brönnimann, M. Schraner, B. Müller, A. Fischer, D. Brunner, E. Rozanov, E. Rozanov, T. Egorova   +7 more
doaj  

Impact of Weak‐Constraint Four‐Dimensional Variational data assimilation on the prediction of a sudden stratospheric warming event in 2024

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The Weak‐Constraint Four‐Dimensional Variational (WC‐4DVAR) system markedly improved the analysis and forecasting of the 2024 sudden stratospheric warming (SSW) event. It reduced biases and enhanced 7–9 day predictions of temperature across the SSW life cycle, with the most pronounced gains for winds also during the critical onset period.
Shaoying Li, Weimin Zhang, Shuo Ma, Bainian Liu, Yanlai Zhao, Xiaoqun Cao   +5 more
wiley   +1 more source

Dry intrusions and warm‐core development in Medicanes: Insights from a multi‐case analysis and the peculiar evolution of Ianos

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Mediterranean tropical‐like cyclones show a clear seasonality, with September cyclones exhibiting the deepest convection and Ianos representing the most extreme case. While one or more dry intrusions are typically detected during the cyclone life cycle, Ianos instead features two much weaker descending airflows.
Daniele Nigro, Lorenzo Giovannini, Simona Bordoni, Stavros Dafis, Mario Marcello Miglietta   +4 more
wiley   +1 more source

Asymmetry in the effect of North Atlantic sea surface temperature on the eddy‐driven jet

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Projections of climate over Europe and the Atlantic are uncertain due to the uncertainty surrounding future changes in North Atlantic sea surface temperatures (SSTs). Here, we demonstrate that warming in the North Atlantic Ocean is linked to a transition to a negative phase of the North Atlantic Oscillation, as well as to an equatorward displacement of
Paul‐Arthur Monerie, Jon Robson, Christopher O'Reilly, Rowan Sutton   +3 more
wiley   +1 more source

Tropospheric amplification of stratosphere–troposphere coupling

Quarterly Journal of the Royal Meteorological Society
Abstract During northern winter the stratospheric polar vortex is highly variable — even breaking down completely during sudden stratospheric warmings. The strength of the stratospheric polar vortex is observed to be coupled to surface weather, primarily through swings in the phase of the Northern Annular Mode — which is nearly ...
Mark P. Baldwin, Thomas Birner, Blanca Ayarzagüena   +2 more
openaire   +1 more source