Results 41 to 50 of about 45,669 (176)

The Dissipation Structure of Extratropical Cyclones

Journal of the Atmospheric Sciences, 2013
Abstract The physical characteristics of extratropical cyclones are investigated based on nonequilibrium thermodynamics. Nonequilibrium thermodynamics, using entropy as its main tool, has been widely used in many scientific fields. The entropy balance equation contains two parts: the internal entropy production corresponds to dissipation
Jiangnan Li, Petr Chylek, Feng Zhang
openaire   +1 more source

Changes in Extratropical Cyclone Dynamics in the North Atlantic in a Warming Climate [PDF]

, 2022
Extratropical cyclones are a major control of weather and climate in the midlatitudes. Climate model simulations have been used to analyze the influence of global warming on extratropical cyclone dynamics. This study addresses the still open questions
Dolores Tesillos, Edgar
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

Significantly increased extreme precipitation expected in Europe and North America from extratropical cyclones

Environmental Research Letters, 2018
For the Northern Hemisphere extratropics, changes in the mid-latitude storm tracks are key to understanding the impacts of climate warming, but projections of their future location in current climate models are affected by large uncertainty.
Matt Hawcroft, Ella Walsh, Kevin Hodges, Giuseppe Zappa   +3 more
doaj   +1 more source

Flying through extratropical cyclone Friedhelm [PDF]

Weather, 2013
On 8 December 2011, Cyclone Friedhelm, an explosively deepening cyclone, passed across the UK, causing exceptionally strong winds over Scotland and strong winds over much of the UK. A research flight through this intense cyclone was undertaken as part of the DIAMET project.
Baker, L, Martinez-Alvarado, O, Methven, J, Knippertz, P   +3 more
openaire   +2 more sources

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

An analysis of the linkages between large-scale flow regime transitions on the spatiotemporal distribution of clustered extratropical cyclone events over the Northern Hemisphere [PDF]

, 2018
An Analysis of the Linkages Between Large-Scale Flow Regime Transitions on the Spatiotemporal Distribution of Clustered Extratropical Cyclone Events over the Northern ...
Bunker, Eric Merton John
core   +1 more source

A new scale‐selective measure of curvature for meteorological fields

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We introduce a novel diagnostic called curvature using radial variation (CURV) that quantifies the local cyclonic or anticyclonic curvature of mean‐sea‐level pressure or geopotential height gridded fields over selected scales. A depiction of how CURV values relate to differing cyclonic curvature is shown in the figure.
Nigel Roberts, Timothy Hewson, Anca Brookshaw, Matthieu Chevallier   +3 more
wiley   +1 more source

Subseasonal forecasts of the MJO and convectively coupled equatorial waves in ACCESS‐S2 and GraphCast: A multi‐year analysis

Quarterly Journal of the Royal Meteorological Society, EarlyView.
ACCESS‐S2 performs better in predicting longer time‐scale and slower moving waves (MJO and equatorial Rossby waves), while GraphCast performs better in predicting shorter and faster moving waves (Kelvin and mixed Rossby–gravity waves). However, both models systematically underestimate precipitation amplitude across all wave types, especially over the ...
Beata Latos, Hanh Nguyen, Matthew C. Wheeler, Chen Li, Catherine de Burgh‐Day, Muhammad E. Hassim, Sandeep Sahany, Aurel Moise   +7 more
wiley   +1 more source

Enhancing severe convection forecasts with microwave radiance assimilation in limited‐area models

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Microwave satellite radiances remain largely underexploited in convection‐permitting limited‐area models. We assess the assimilation of humidity‐sensitive radiances from the MHS instrument in the operational ICON‐2I model, improving the precipitation forecast of a severe convective event over the Marche region, Italy, substantially by correcting ...
Marcello Grenzi, Thomas Gastaldo, Virginia Poli, Chiara Marsigli, Tijana Janjic, Alberto Carrassi   +5 more
wiley   +1 more source