Results 141 to 150 of about 10,485 (275)

Contrasting the synoptic drivers of the UK heatwaves of 1976, 2003, 2018 and 2022

Weather, Volume 81, Issue 7, Page 212-221, July 2026.
UK summer heatwaves are dictated by the polar jet stream position and sea surface temperature (SST) variability, affecting the Summer North Atlantic Oscillation (SNAO) index. The SNAO can determine and influence the Central England Precipitation (CEP) and Central England Temperature (CET).
Nedim Sladić, Richard P. Allan, Tim Trent, Adam C. Povey, Dan Suri   +4 more
wiley   +1 more source

Advancing Toward Gray Zone: Evaluation of Tropical Cyclones in Key Basins With the 12.5 km High Resolution CAS FGOALS‐f3 Model

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract State‐of‐the‐art climate models are approaching gray‐zone resolutions that can improve the representation of tropical cyclones (TCs), but the extent of these gains remains uncertain. This study evaluates the effect of spatial resolution, particularly near the gray‐zone, using three resolution configurations of the Chinese Academy of Sciences ...
Charith Madusanka Widanage, Qing Bao, Bian He, Gayeshan Rajith Gihara Giruwa Gamachchige, Bikash Nepal, Dipendra Lamichhane   +5 more
wiley   +1 more source

Viscous and Magnetic Boundary Layers at the Top of the Core in Geodynamo Models

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.
Abstract We investigate the boundary layer at the top of the Earth's core, which acts as a filter between the interior of the core and its surface, where models built from geomagnetic data are derived. We rely on no‐slip convective geodynamo numerical simulations calculated for a low viscosity fluid, with Ekman numbers E=10−6 $E=1{0}^{-6}$ and E=10−7 ...
D. Jault, P. Personnettaz, N. Gillet, T. Lepage, N. Schaeffer   +4 more
wiley   +1 more source

Dynamical Diagnosis: A Comparison of Quasigeostrophy and Ertel Potential Vorticity

, 2008
Advances in computer power, new forecasting challenges, and new diagnostic techniques have brought about changes in the way atmospheric development and vertical motion are diagnosed in an operational setting. Many of these changes, such as improved model
John W. Nielsen-Gammon, David A. Gold
core   +1 more source

Representation of East Pacific Easterly Waves in Subseasonal‐To‐Seasonal Forecasts of the Unified Forecast System

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 7, July 2026.
Abstract East Pacific easterly waves (EPEWs) are critical precursors to tropical cyclogenesis and regional rainfall yet are poorly captured in subseasonal‐to‐seasonal (S2S) forecast models. This study evaluates how EPEWs are simulated in NOAA's Unified Forecast System (UFS) Prototypes 5–8 during May‐October relative to ERA5 reanalysis, using wave ...
Yu‐Cian Tsai, Eric D. Maloney
wiley   +1 more source

Investigation of mixed element hybrid grid-based CFD methods for rotorcraft flow analysis

, 2010
Accurate first-principles flow prediction is essential to the design and development of rotorcraft, and while current numerical analysis tools can, in theory, model the complete flow field, in practice the accuracy of these tools is limited by various ...
Smith, Marlyn J., Whitehouse, Glen R., Boschitsch, Alexander H., Lynch, C. Eric, Brown, Richard   +4 more
core  

Diabatic effects on potential vorticity over the global tropics

, 2000
Through the use of physical initialization, which relates to precipitation and precipitable water initialization we incorporate the observed rainfall and obtained a better description of the diabatic heating from a very high-resolution global model ...
Mohanty, U. C., Jha, Bhaskar, Bedi, H. S., Krishnamurti, T. N.   +3 more
core   +1 more source

Ensemble‐Based Analysis and Moisture Sources of Double Rainbands Over South China

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract This study investigates the role of moisture in double rainbands over South China through combining ensemble sensitivity analysis and Lagrangian backward tracing. During 10–11 May 2022, a high‐impact double‐rainband event hit South China with coexisting inland and coastal heavy rainfall.
Biyu Xu, Huiqi Li, Langming Ye, Hui Xiao, Xiantong Liu, Xiaona Rao   +5 more
wiley   +1 more source

Statistical Analysis of Heavy Precipitation Events Caused by Extra-tropical Cyclones of Different Occlusion Types during the Cold Season

Gaoyuan qixiang
Based on the conventional observation， the cloud top blackbody brightness temperature data of Fengyun satellite， and the European Centre for Medium-Range Weather Forecasts 0.25°×0.25° ERA5 reanalysis data from 2006 to 2021， we have conducted a ...
Xiaodan DU, Yu ZHAO
doaj   +1 more source

Alaskan Ridge Blocking and Associated Winter Cold Conditions Over North America

International Journal of Climatology, Volume 46, Issue 8, 30 June 2026.
Multi‐decadal (1979–2023) analysis reveals that wintertime reductions in the meridional gradient of potential vorticity (PVy) over the Bering Sea are recurrent but episodic features of North Pacific circulation. These suppressed PVy states consistently co‐occur with amplified Alaskan ridging, weakened mid‐tropospheric westerlies and a downstream warm ...
Varunesh Chandra, James E. Overland, Muyin Wang   +2 more
wiley   +1 more source