Results 71 to 80 of about 639 (194)

Indo–Western Pacific Tropical Heating Anomalies Regulate the Cross‐Pacific Atmospheric River Highways During Boreal Summer

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Atmospheric rivers (ARs) constitute a global, interconnected highway network rather than isolated regional events. In boreal summer, cross‐Pacific ARs originate over Southeast Asia, are fueled by subtropical outflows from the Asian monsoon plume, transport warm, moist air across the North Pacific, and make landfall in North America (NA).
Yurong Song, Mengqian Lu, Yang Zhao
wiley   +1 more source

Genesis of Intraseasonal Oscillations and Equatorial Waves

Journal of the Atmospheric Sciences, 2002
Abstract The particular role of evaporation–wind feedback, and as well cumulus convection and dissipation, in the formation of the Madden–Julian 30–60-day intraseasonal oscillation (MJO) and equatorially trapped waves, including Kelvin, equatorial Rossby, mixed Rossby–gravity, and eastward inertio-gravity waves, has been studied using a global two ...
openaire   +1 more source

Elliptical Orbit Representation for the Annual Evolution of the Northern Hemisphere Stratospheric Polar Vortex. Part I: Diagnosing Interannual Variability

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract Using a single annual frequency with each year defined from July 1 to June 30 of the following calendar year, this study fits an ellipse to the yearly phase space trajectory of the daily time series of MU (stratospheric mass‐weighted zonally integrated zonal wind at 60°N) and M (total polar stratospheric air mass over 60–90°N) to represent the
Michael Secor, Jie Sun, Yueyue Yu, Zhaohua Wu, Ming Cai   +4 more
wiley   +1 more source

South America Intraseasonal Oscillation: global vs regional indices

, 2023
Abstract The intraseasonal oscillation is a complex non-linear variability that has a significant impact on precipitation. Regional indices have been developed to accurately represent the modulation of the intraseasonal rainfall variability over South America throughout the year.
Camila Sapucci, Victor C. Mayta, Pedro Leite da Silva Dias   +2 more
openaire   +1 more source

Elliptical Orbit Representation for the Annual Evolution of the Northern Hemisphere Stratospheric Polar Vortex. Part II: Long‐Lead Forecasts of Wintertime S2S Anomalies

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract In Part I, we represent the annual evolution of the Northern Hemisphere stratospheric polar vortex (SPV) in individual years using an ellipse, defined through six ellipse parameters, for the phase‐space trajectory of the daily time series of MU (mass‐weighted zonally integrated zonal wind at 60°N above 400 K) and M (stratospheric air mass over
Michael Secor, Jie Sun, Yueyue Yu, Zhaohua Wu, Ming Cai   +4 more
wiley   +1 more source

Physical‐Background‐Constrained Bias Correction for Daily Precipitation Prediction Over China by a Subseasonal‐to‐Seasonal Model

Atmospheric Science Letters, Volume 27, Issue 3, March 2026.
The prediction skill of the CMA‐CPSv3 model beyond 15 days is hindered by both its systematic bias and its incapability in capturing the modulations of predictability sources. The regional‐aggregation‐based QM method can largely overcome the overfitting problem, eliminating the model bias that overestimates drizzle precipitation and underestimates ...
Jie Wu, Li Guo, Xiaolong Jia
wiley   +1 more source

Externally‐Forced Changes to Southern Hemisphere Stratosphere‐Troposphere Coupling Variability

Earth's Future, Volume 14, Issue 3, March 2026.
Abstract Stratosphere‐troposphere coupling (STC) in the Southern Hemisphere (SH) occurs primarily from austral spring to summer, and the dominant mode of variability in this vertical coupling (the “STC mode”) represents the timing of the seasonal transition of the polar vortex and its subsequent coupling to the Southern Annular Mode (SAM).
Amy H. Butler, Eun‐Pa Lim, Isla R. Simpson   +2 more
wiley   +1 more source

Modulation of Quasi‐Biennial Oscillation on Wintertime Variability of Intraseasonal 2‐m Temperature Over Northern Eurasia and Its Potential Impact on Subseasonal Prediction in China

Geophysical Research Letters
The mid‐high latitude intraseasonal oscillation (ISO) has remarkable impacts on the Northern Hemisphere. However, the interannual variance of the mid‐high latitude ISO and its underlying mechanism are rarely explored.
Xinrui Xie, Jiye Wu, Jing‐Jia Luo, Jianxiang Xu, Huiping Yan   +4 more
doaj   +1 more source

Tracing Coupled GCM Equatorial Pacific Climatological Biases via Surface Flux Adjustments

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract Global weather and climate forecasts hinge on the ability of coupled general circulation models (CGCMs) to simulate ocean‐atmosphere interactions in the tropical Pacific. Yet most CGCMs develop tropical Pacific biases, such as an overly‐intense equatorial cold tongue (ECT), which limit their simulation skill.
Xian Wu, Andrew T. Wittenberg, Fanrong Zeng, Brandon G. Reichl, Feiyu Lu   +4 more
wiley   +1 more source

Precipitation Characteristics and Thermodynamic‐Convection Coupling in Global Kilometer‐Scale Simulations

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract We compare three global kilometer‐scale models (ICON, IFS and NICAM) to clarify the advantages and challenges of high‐resolution global weather and climate modeling, using different approaches to represent convection, from fully parameterized to fully explicit.
Daisuke Takasuka, Tobias Becker, Jiawei Bao   +2 more
wiley   +1 more source