Results 91 to 100 of about 5,189 (258)

The decay of cyclonic eddies by Rossby wave radiation

, 1998
It is argued that because shallow water cyclones on a β-plane drift westward at a speed equal to an available Rossby wave phase speed, they must radiate energy and cannot, therefore, be steady. The form of the Rossby wave wake accompanying a quasi-steady
McDonald, NR
core  

Quadratic invariants for discrete clusters of weakly interacting waves [PDF]

, 2013
We consider discrete clusters of quasi-resonant triads arising from a Hamiltonian three-wave equation. A cluster consists of N modes forming a total of M connected triads.
Nazarenko, Sergey, Harper, Katie L., Bustamante, Miguel D.   +2 more
core   +1 more source

Western Disturbance Breaks and Extreme Spring Heat Over Northern India Linked to Quasi‐Stationary Rossby Waves

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Spring heat extremes over northern India in March coincide with critical wheat growth and pose disproportionate risks to yield and food security. March surface temperatures are modulated by Western Disturbances (WDs), midlatitude cyclonic systems embedded in the subtropical jet that typically bring rain and cooling.
Sanketa Kadam, Mingfang Ting, Alex C. Ruane, Richard Seager   +3 more
wiley   +1 more source

Predictability of midlatitude Rossby‐wave packets

Quarterly Journal of the Royal Meteorological Society
Abstract Rossby‐wave packets (RWPs) along the midlatitude jet are a fundamental ingredient of extratropical dynamics. RWPs have been linked to enhanced atmospheric predictability and the occurrence of extreme weather events. We here investigate the predictability of Northern Hemispheric RWPs as physical entities, defined by enhanced ...
Isabelle Prestel-Kupferer, Sören Schmidt, Michael Riemer, Franziska Teubler   +3 more
openaire   +3 more sources

Exploring the Influence of Equatorial Waves on a Record‐Breaking Extreme Precipitation Event in Central Sahel: Insights From Convection Permitting Simulations

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract The floods of 01 September 2009 in Ouagadougou, Burkina Faso, were among the most severe in the Central Sahel's history, highlighting the region's persistent flood risk. This extreme precipitation event (EPE) was influenced by various atmospheric drivers, including Convectively Coupled Equatorial Waves (CCEWs).
Moussa Diakhaté, Philippe Peyrillé, Jean‐Pierre Chaboureau, Florent Beucher, Fleur Couvreux   +4 more
wiley   +1 more source

A Review of the Dynamics and Oscillations of the Atmosphere

, 2012
The atmosphere is a complex, dynamic system and the weather depends on its state. There are many different phenomena that affect the state of the atmosphere - some only involve the atmosphere, others involve the interaction between the atmosphere and the
Ross, Joseph
core  

Pan‐Regional Prolonged Droughts Linked to Consecutive La Niña Events

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract From 2020 to 2023, prolonged droughts affected Central‐West Asia, East Africa, and North America, causing widespread disruptions to regional hydroclimate and ecosystems. These droughts coincided with an unusually persistent cold state of the tropical Pacific associated with consecutive La Niña events.
Teng Zhang, Wenjun Zhang, Feng Jiang, Suqiong Hu, Shanlei Sun, Fei‐Fei Jin, Haishan Chen   +6 more
wiley   +1 more source

Global-Scale Rossby Waves on Stars [PDF]

Rossby waves (r-modes) arise due to the conservation of absolute vorticity on rotating spheres. The waves govern the large-scale dynamics of the Earth's atmosphere/oceans and have been intensively studied during decades. Recent discovery of the waves on
Albekioni, Mariam
core   +1 more source

Land‐Feedbacks‐Driven Dry‐Hot Mutual Reinforcement Extends Global Compound Drought‐Heatwave Durations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 12, 28 June 2026.
Abstract Under global warming, numerous compound events have emerged, yet the physical linkages between the two factors often remain unclear. The increasing frequency of droughts and heatwaves has raised the likelihood of compound drought and heatwave events (CDHE) worldwide, accompanied by frequent long‐lasting mega‐CDHE posing serious exposure risks.
Jie Zhang, Qiang Zhang, Haishan Chen, Yanjie Hu, Sidra Syed, Wenjian Hua, Irfan Ullah   +6 more
wiley   +1 more source

The contour-advective semi-Lagrangian hybrid algorithm approach to weather forecasting and freely propagating inertia-gravity waves in the shallow-water system

, 2009
This thesis is aimed at extending the spherical barotropic contour-advective semi-Lagrangian (CASL) Algorithm, written in 1996 by David Dritschel and Maarten Ambaum, to more complex test cases within the shallow-water context.
Smith, Robert K.
core