Results 131 to 140 of about 66,779 (296)

Using a causal effect network approach to quantify the impact of ENSO teleconnections on summer monsoon precipitation over the Himalayas and key regional circulations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We quantified the causal effect (CE) of linkages between four monthly climate indices ENSO, SMHP, RWC, and MHC for 1940–2022 with a time lag of one month. The results show CE values from (1) ENSO to SMHP of −0.33$$ -0.33 $$ to −0.44$$ -0.44 $$ (i.e., a one standard deviation (SD) increase in ENSO causes a decrease in SMHP of −0.33$$ -0.33 $$ to −0.44$$
Grzegorz Muszynski, Andrew Orr, Indrani Roy, Giorgia Di Capua, Hamish D. Pritchard, J. Scott Hosking   +5 more
wiley   +1 more source

Forcing of the wintertime atmospheric circulation by the multidecadal fluctuations of the North Atlantic ocean

Environmental Research Letters, 2014
The North Atlantic sea surface temperature exhibits fluctuations on the multidecadal time scale, a phenomenon known as the Atlantic Multidecadal Oscillation (AMO).
Yannick Peings, Gudrun Magnusdottir
doaj   +1 more source

Exceptionally poor and good medium‐range forecasts of the large‐scale circulation over Europe in ERA5 reforecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study investigates year‐round exceptionally poor and good day‐6 forecasts of the 500‐hPa geopotential height field over Europe using 45 years of ERA5 reforecasts and applies a weather regime perspective to analyse large‐scale pattern evolution and regime transitions.
Seraphine Hauser, Steven M. Cavallo, Linus Magnusson, Jonathan E. Martin, David B. Parsons   +4 more
wiley   +1 more source

Quantifying driving ensemble influence on operational convection‐permitting ensemble spread

Quarterly Journal of the Royal Meteorological Society, EarlyView.
By comparing statistics of precipitation patterns between a convection‐permitting ensemble and the global ensemble used to drive it, we investigate the conditions under which the convection‐permitting ensemble diverges from the evolution of the driving ensemble.
Adam Gainford, Suzanne L. Gray, Thomas H. A. Frame, Aurore N. Porson, Marco Milan   +4 more
wiley   +1 more source

Evidence for Atlantic Ocean forcing the atmosphere and the negative role of model bias

Communications Earth & Environment
There is agreement on how the North Atlantic Oscillation forces the Atlantic Meridional Overturning Circulation, but the existence of a reversed interaction is widely disputed.
Rein Haarsma, Sybren Drijfhout
doaj   +1 more source

Atmospheric blocking: space-time links to the NAO and PNA [PDF]

, 2018
In the Northern hemisphere, regions characterized by an enhanced frequency of atmospheric blocking overlap significantly with those associated with the major extra-tropical patterns of large-scale climate variability—namely the North Atlantic Oscillation
Croci-Maspoli, Mischa, Davies, Huw, Schwierz, Cornelia   +2 more
core  

Indian and African monsoons: Trajectories and interactions

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The catch basin of marine air particles of the Indian monsoon is the tropical Indian ocean, whilst that of the African monsoon is the east tropical Atlantic. However, the oscillations induced by the monsoonal interactions favour particle exchange between the two basins. These transitions are abrupt in the presence of stochastic resonance. The monsoonal
Giovanni A. Dalu, Marina Baldi
wiley   +1 more source

Anthropogenic climate change leads to a pronounced reorganisation of wintertime North Atlantic atmospheric circulation regimes

Communications Earth & Environment
Regional climate variability manifests through distinct atmospheric regimes influencing weather, climate, and predictability. Yet, their response to global warming remains unresolved.
Susmit Subhransu Satpathy, Christian L. E. Franzke, Vincent Verjans, Terence O’Kane   +3 more
doaj   +1 more source

The relationship between seasonal mean temperature and most extreme day

Quarterly Journal of the Royal Meteorological Society, EarlyView.
In Northern Hemisphere winter, there is a strong correlation between seasonal mean temperature and coldest daily mean temperature which varies in magnitude from one region to another (with a weaker relationship in summer between mean and hottest day).
Anna Maidens, Hazel E. Thornton, Philip Bett‐Williams, Doug Smith   +3 more
wiley   +1 more source

Atmospheric teleconnection patterns and eddy kinetic energy content: wavelet analysis

, 2004
International audienceIn this paper, we employ a non-decimated wavelet decomposition to analyse long-term variations of the teleconnection pattern monthly indices (the North Atlantic Oscillation and the Southern Oscillation) and the relationship of these
Glushkov, A. V., Khokhlov, V. N., Tsenenko, I. A.   +2 more
core   +2 more sources