Results 41 to 50 of about 630 (148)

Observationally derived transport diagnostics for the lowermost stratosphere and their application to the GMI chemistry and transport model [PDF]

Atmospheric Chemistry and Physics, 2007
Transport from the surface to the lowermost stratosphere (LMS) can occur on timescales of a few months or less, making it possible for short-lived tropospheric pollutants to influence stratospheric composition and chemistry.
S. E. Strahan, B. N. Duncan, P. Hoor
doaj  

Rare Lightning and Convection Characteristics During Two Successive Tornadoes in Southern China

High Voltage, EarlyView.
ABSTRACT Systematic investigations into lightning characteristics of tornado storms in China remain scarce. This study comprehensively analyses rare lightning behaviour and overshooting top characteristics for two successive tornadoes during a long‐lived supercell in southern China on 27 April 2024.
Fengquan Li, Jiangling Zhi, Yu Wang, Hantao Tao, Zhaoming Li, Shanqiang Gu, Zhe Li, Zeyu Zhang, Lei Zhang, Guoying Tang   +9 more
wiley   +1 more source

Meridional Wind in the Upper Stratosphere: A Source of Winter NAO Predictability

Geophysical Research Letters
Improvement of subseasonal to seasonal North Atlantic winter forecasting requires better prediction of the North Atlantic Oscillation (NAO), the dominant mode of variability in the Northern Hemisphere. Despite recent research demonstrating the importance
Elizabeth Collingwood, Adam A. Scaife, Hua Lu, Bablu Sinha, John King, Robert Marsh, Gareth Marshall   +6 more
doaj   +1 more source

Multidecadal Changes in Atmospheric Dryness Over East Asia Dominated by Internal Climate Variability

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Summer near‐surface vapor pressure deficit (VPD), a key measure of atmospheric dryness, has increased markedly across East Asia since 1980, yet the relative roles of external forcing and internal variability (IV) in its multidecadal changes remain unclear.
Xi Wang, Wenjian Hua, Aiguo Dai, Lu Zhou, Minhua Qin, Haishan Chen   +5 more
wiley   +1 more source

Hemispheric stationary-eddy activity of the winter North Atlantic oscillation

Environmental Research: Climate
The winter North Atlantic Oscillation (NAO), key driver of climate variability in the Euro-Atlantic sector, remains unsettled as to its spatio-temporal characteristics in the Northern Hemisphere.
M Brotons, J García-Serrano, R J Haarsma   +2 more
doaj   +1 more source

The tropospheric response to zonally asymmetric momentum torques: implications for the downward response to wave reflection and SSW events [PDF]

Weather and Climate Dynamics
The role of zonal structure in the stratospheric polar vortex for the surface response to weak vortex states and concurrently occurring wave reflection events is isolated using an intermediate-complexity moist general circulation model.
W. Ning, C. I. Garfinkel, J. Cohen, J. Cohen, I. P. White, J. Rao   +5 more
doaj   +1 more source

Super Warm Early Eocene Simulations With HadGEM3‐GC31‐LL

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract The early Eocene Climatic Optimum (EECO; 53.3–49.1 million years ago) represents the period of greatest sustained warmth in the Cenozoic (last 66 million years), with proxy‐data indicating global‐mean temperatures 10–16°C above preindustrial and atmospheric CO2 ${\text{CO}}_{2}$ concentrations of 1,200–2,500 ppmv.
Sebastian Steinig, Charles J. R. Williams, Natalie J. Burls, Marlow J. Cramwinckel, Alex Farnsworth, Gavin L. Foster, Peter O. Hopcroft, Gordon N. Inglis, Caroline H. Lear, Annette Osprey, Richard D. Pancost, Zikun Ren, William H. G. Roberts, Alistair A. Sellar, Emma L. Stone, Richard Wood, Jiang Zhu, Daniel J. Lunt   +17 more
wiley   +1 more source

Interannual Influence of Antarctic Sea Ice on Southern Hemisphere Stratosphere‐Troposphere Coupling

Geophysical Research Letters
While weakening of the boreal polar vortex may be caused by autumnal Arctic sea ice loss, less is known about the interannual influence of Antarctic sea ice on stratosphere‐troposphere coupling in the Southern Hemisphere.
Divya Rea, Dillon Elsbury, Amy H. Butler, Lantao Sun, Yannick Peings, Gudrun Magnusdottir   +5 more
doaj   +1 more source

A Generation Mechanism of Thorpe‐Detected Turbulence: A Case Study Using WRF Model Simulation

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Turbulence in the free atmosphere has been widely estimated using the Thorpe method, which identifies vertical inversions in potential temperature profiles as evidence of overturning. However, the mechanisms driving Thorpe‐detected turbulence remain poorly understood, due largely to limitations in spatial and temporal resolution of ...
Han‐Chang Ko, Hye‐Yeong Chun
wiley   +1 more source

Intraseasonal Linkages of Winter Surface Air Temperature Between Eurasia and North America

Geophysical Research Letters
Wintertime temperature extremes sometimes show a continental linkage between Eurasia and North America (NA), but whether these connections are coincidental or dynamically robust remains unclear.
Xiaocen Shen, Lin Wang, Adam A. Scaife, Steven C. Hardiman   +3 more
doaj   +1 more source