Results 51 to 60 of about 2,209,995 (233)

Hurricane Gonzalo and its Extratropical Transition to a Strong European Storm [PDF]

Bulletin of the American Meteorological Society, 2015
Introduction. Recent studies simulating continued anthropogenic climate change provide evidence that extratropically transitioning tropical cyclones (TCs) will become more frequent and will hit western Europe more often (Baatsen et al. 2015; Haarsma et al. 2013). Mokhov et al.
Feser, F., Barcikowska, M., Haeseler, S., Levebvre, C., Schubert-Frisius, M., Stendel, M., von Storch, H., Zahn, M.   +7 more
openaire   +2 more sources

A wavelet‐based method for the assessment of hydrodynamic model behavior against observed sea level variability

Limnology and Oceanography: Methods, EarlyView.
Abstract Sea level outputs from hydrodynamic models are often assessed against tide gauge data by comparing the standard deviations of modeled and observed time series, and by calculating the Pearson correlation coefficient and centered root mean square error (cRMSE) between the two.
Andrew Twelves, Ulpu Leijala, Antti Westerlund, Veera Haapaniemi, Jani Särkkä   +4 more
wiley   +1 more source

Asymmetry Between Positive and Negative Phases of the Pacific Meridional Mode: A Contributor to ENSO Transition Complexity

Geophysical Research Letters, 2023
The Pacific Meridional Mode (PMM) plays a critical role in affecting El Niño‐Southern Oscillation (ENSO). This study examines the phase asymmetry of PMM events triggered by tropical and extratropical forcings, namely successive and stochastic events ...
Hanjie Fan, Chunzai Wang, Song Yang
doaj   +1 more source

Multiscale numerical sensitivity simulations of a mesoscale gravity‐wave event

Quarterly Journal of the Royal Meteorological Society, EarlyView.
High‐resolution WRF simulations of the February 14–15, 1992 STORM‐FEST event show that mesoscale gravity‐wave genesis occurs via geostrophic adjustment within an upper‐level unbalanced jet, while wave ducting governs maintenance. High‐resolution (1 km), improved physical parameterization, and targeted sensitivity simulations demonstrate that upstream ...
Rajan Bhandari, Michael L. Kaplan, Ananya Sen   +2 more
wiley   +1 more source

Diagnosing the transition layer at extratropical latitudes using MLS O₃ and MOPITT CO analyses [PDF]

Atmospheric Chemistry and Physics, 2013
The behavior of the extratropical transition layer (ExTL) is investigated using a chemistry transport model (CTM) and analyses derived from assimilation of MLS (Microwave Limb Sounder) O3 and MOPITT (Measurements Of Pollution In The Troposphere) CO data.
J. Barré, L. El Amraoui, P. Ricaud, W. A. Lahoz, J.-L. Attié, V.-H. Peuch, B. Josse, V. Marécal   +7 more
doaj   +1 more source

Diagnosing the Downstream Impact of Extratropical Transition Using Multimodel Operational Ensemble Prediction Systems [PDF]

, 2012
The study examines the predictability during the extratropical transition (ET) of tropical cyclones using the THORPEX Interactive Grand Global Ensemble (TIGGE), a multimodel ensemble prediction system (EPS).
Keller, Julia Henriette
core   +1 more source

Stratospheric influence on tropical cyclone evolution

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We developed a metric based on moist static energy to detect and quantify the intrusion of stratospheric air into the inner core of tropical cyclones. High‐resolution numerical simulations show that this stratospheric interaction forms warm anomalies (high‐level warm cores) in the upper troposphere.
Andrea Davin, Giousef Alexandros Charinti, Caroline Muller, Andrea Polesello, Claudia Pasquero   +4 more
wiley   +1 more source

Hydroclimatic record from an Altiplano cushion peatland (24°S) indicates large-scale reorganisation of atmospheric circulation for the late Holocene.

PLoS ONE, 2022
The hydroclimate of South America is characterized by the South American summer monsoon (SASM), a tropical atmospheric circulation that induces a summer precipitation regime, and the Southern Hemisphere Westerlies (SHW), an extratropical atmospheric ...
Andreas Lücke, Sebastian Kock, Holger Wissel, Julio J Kulemeyer, Liliana C Lupo, Frank Schäbitz, Karsten Schittek   +6 more
doaj   +1 more source

Recent progress in understanding the interaction between ENSO and the East Asian winter monsoon: A review

Frontiers in Earth Science, 2023
This paper reviews recent advances in understanding the interaction between the East Asian winter monsoon (EAWM) and El Niño-Southern Oscillation (ENSO). The achievements are summarized into two aspects: 1) the impacts of ENSO on the EAWM, and 2) effects
Tianjiao Ma, Tianjiao Ma, Wen Chen
doaj   +1 more source

Structural changes in the interannual variability of extreme autumn precipitation in eastern Spain and the weakening of synoptic forcing

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Total autumn precipitation in eastern Spain remains stable between 1950 and 2024, masking a substantial internal redistribution between ordinary and extreme rainfall. While torrential precipitation (Rp95) increases and ordinary precipitation (Ro) decreases, the extreme contribution index (Cext) shows a significant positive trend and a structural shift ...
Eduardo A. Agosta, David Corell, Juan J. Miró, María José Estrela   +3 more
wiley   +1 more source