Results 51 to 60 of about 45,669 (176)

An extratropical cyclone database: A tool for illustrating cyclone structure and evolution characteristics

, 2012
Extratropical cyclone lifecycles have been studied extensively with the aim of understanding the dynamical mechanisms involved in their development. Previous work has often been based on subjective analysis of individual case studies.
Stringer, M.A., Hodges, K.I., Dacre, H.F., Hawcroft, M.K.   +3 more
core   +1 more source

Synoptic and large‐scale drivers of extreme precipitation events in the Himalayas

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Months associated with maximum frequency of extreme precipitation events (EPEs). 6102 extreme precipitation days (i.e., exceeding 99th percentile for daily precipitation) occurred across the Karakoram, Western Himalayas (WH), Central Himalayas (CH) and Eastern Himalayas (EH) during 1979 to 2023.
Priya Bharati, Pranab Deb, Kieran M. R. Hunt   +2 more
wiley   +1 more source

Analysis of an ex-tropical cyclone after its reintensification as a warm-core extratropical cyclone

, 1998
Ex-hurricane Lili reintensified as an extratropical cyclone before travelling across the data-rich region of the British Isles on 28 October 1996. The cyclone centre passed close to a Mesosphere-Stratosphere-Troposphere (MST) radar, providing continuous ...
Vaughan, Geraint; id_orcid, Browning, K. A.   +1 more
core   +5 more sources

Do Extratropical Cyclones Impact Synoptic‐Scale Variability of the Arctic Oscillation During Cold Season?

Geophysical Research Letters
The Arctic Oscillation (AO) is the most significant mode of sea level pressure (SLP) anomalies in the Northern Hemisphere, exhibiting significant multiple‐timescale variability from synoptic to decadal.
Shengyi Qian, Haibo Hu, Kevin I. Hodges, Xiu‐Qun Yang   +3 more
doaj   +1 more source

An intensity index and its application for summertime extratropical cyclones in East Asia

Geoscience Letters, 2023
The intensity definition and classification of the extratropical cyclone (EC) are still less studied than the tropical cyclone, due to the relatively ambiguous structure and diverse life cycle of ECs.
Sitao Wang, Yujing Qin, Chuhan Lu, Zhaoyong Guan   +3 more
doaj   +1 more source

A synoptic overview of the EUREC4A field campaign

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The figure shows a summary of the important synoptic features and associated cloud patterns during the EUREC4A field campaign, divided into four subjectively defined periods. In period 1 the fish cloud pattern was dominant, associated with a shear line, and there was an initial transport of dust from West Africa that reached Barbados in the third ...
Leo Saffin, Richard Jones, Juliane Schwendike, Arlene Laing, Kathy‐Ann Caesar, Lyndon Alves, Andre Charles, Letitia Humphreys, Carolyn Peck, Cecile Marie‐Luce, Gregory Cato, Nicola Alexander, Elmo Burke, Avlon Charlery, Shamal Clarke, Sheryl Etienne‐Leblanc, Carshena Gordon, Danielle Nurse, Kiran Sedoo, Kaylinda Ward‐Forbes, Anton Wiltshire, Shanea Young, Leif Denby, Douglas J. Parker, Lorenzo Tomassini, Alan Blyth, Gary Lloyd, Alexander G. Jong   +27 more
wiley   +1 more source

Strong polar vortex favoured intense Northern European storminess in February 2022

Communications Earth & Environment
February 2022 was an unusually stormy month over Northern Europe, including three extratropical cyclones impacting the United Kingdom and Ireland within a single week. The month also experienced an exceptionally strong stratospheric polar vortex; however,
Ryan S. Williams, Amanda C. Maycock, Vincent Charnay, Jeff Knight, Inna Polichtchouk   +4 more
doaj   +1 more source

CycloTRACK (v1.0) – tracking winter extratropical cyclones based on relative vorticity: sensitivity to data filtering and other relevant parameters [PDF]

Geoscientific Model Development, 2014
In this study we present a new cyclone identification and tracking algorithm, cycloTRACK. The algorithm describes an iterative process. At each time step it identifies all potential cyclone centers, defined as relative vorticity maxima embedded in ...
E. Flaounas, V. Kotroni, K. Lagouvardos, I. Flaounas   +3 more
doaj   +1 more source

A cyclone phase space dedicated to extratropical cyclones

Weather and Climate Dynamics
Despite intensive research on midlatitude cyclones since the mid-twentieth century, open questions on their structure and development remain, like the question of their core temperature. Few studies have addressed what the proportion of cold-core and warm-core cyclones in midlatitudes is, but it is not clear yet if occluded cyclones are cold-core or ...
Myriam Besson, Gwendal Rivière, Sébastien Fromang   +2 more
openaire   +1 more source

Assessment of subseasonal forecast skill of tropical–extratropical cloud bands over the four subtropical convergence zones

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study evaluates the subseasonal predictive skill of tropical–extratropical cloud bands across four subtropical convergence zones in ECMWF reforecasts (2003–2022). Results show that, while exact daily predictions are limited to one week, accounting for temporal displacement improves forecast skill significantly, revealing a systematic early onset ...
Romain Pilon, Daniela I.V. Domeisen
wiley   +1 more source