Results 71 to 80 of about 1,728 (177)

Different Responses of the Madden‐Julian Oscillation to the Fast and Slow Decaying El Niño in Spring

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract This study investigates the modulation of the Madden‐Julian Oscillation (MJO) by El Niño during decaying springs, using reanalysis data. El Niño events are categorized into fast‐decaying (FD) and slow‐decaying (SD) types based on their decaying rate.
Xiong Chen, Chongyin Li, Minghao Yang
wiley   +1 more source

Vertically Resolved Analysis of the Madden‐Julian Oscillation Highlights the Role of Convective Transport of Moist Static Energy

Geophysical Research Letters
We simulate the Madden‐Julian oscillation (MJO) over an aquaplanet with uniform surface temperature using the multiscale modeling framework (MMF) configuration of the Energy Exascale Earth System Model (E3SM‐MMF).
Da Yang, Lin Yao, Walter Hannah
doaj   +1 more source

Madden‐Julian Oscillation and Atmospheric Rivers: New Insights on Water Source and Transport for Extreme Rainfall Over the Western U.S.

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Atmospheric rivers (ARs) were first documented by Zhu and Newell for transporting global water vapor. ARs contribute to extreme rainfall, especially over the Western United States. The primary water vapor source of ARs is from the tropical ocean, where convective systems bring the moist flux upward from the surface to the troposphere. Previous
Chad A. Small, Shuyi S. Chen, Brandon W. Kerns   +2 more
wiley   +1 more source

Sudden Vertical Velocity Regime Shifts Initiate Flash Drought in Puerto Rico

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract This study focuses on flash drought events in Puerto Rico and the Caribbean. Because the rapid onset and intensity of flash drought can potentially cause more devastation without established prediction methods, this research seeks to understand the synoptic scale atmospheric drivers of flash drought events. The primary goal of this study is to
Tyler Gingrich, Craig A. Ramseyer
wiley   +1 more source

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

Simulated Tropical Troposphere Response to the QBO: Effect of Vertical Resolution, Gravity Waves Parameterization, and Boundary Forcing

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract An intermediate complexity general circulation model is used to isolate the effect of vertical resolution and gravity wave parameterization on the simulated monthly quasi‐biennial oscillation (QBO)‐tropical precipitation linkage. For low vertical resolution, the model is able to simulate QBO in the lowermost stratosphere, and its impact on the
Chen Schwartz, Chaim I. Garfinkel, Wen Chen   +2 more
wiley   +1 more source

Parameter Modulation of Madden-Julian Oscillation Behaviors in BCC_CSM1.2: The Key Role of Moisture-Shallow Convection Feedback

Atmosphere, 2019
To reveal key parameter-related physical mechanisms in simulating Madden-Julian Oscillation (MJO), seven physical parameters in the convection and cloud parameterization schemes of Beijing Climate Center Climate System Model (BCC_CSM1.2) are perturbed ...
Kai Huang, Hong-Li Ren, Xiangwen Liu, Pengfei Ren, Yuntao Wei, Mu Mu   +5 more
doaj   +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

The stochastic skeleton model for the Madden–Julian Oscillation with time-dependent observation-based forcing [PDF]

Nonlinear Processes in Geophysics
We analyze solutions to the stochastic skeleton model, a minimal non-linear oscillator model for the Madden–Julian Oscillation (MJO). This model has been recognized for its ability to reproduce several large-scale features of the MJO. In previous studies,
N. Ehstand, N. Ehstand, R. V. Donner, R. V. Donner, C. López, M. Barreiro, E. Hernández-García   +6 more
doaj   +1 more source

Interannual variations of the influences of MJO on winter rainfall in southern China

Environmental Research Letters, 2020
The influences of Madden-Julian Oscillation (MJO) on the winter rainfall in southern China exhibit prominent interannual variations. In general, when MJO is active over the Indian Ocean (western Pacific), winter rainfall in southern China increases ...
Xiong Chen, Chongyin Li, Lifeng Li, Peilong Yu, Minghao Yang   +4 more
doaj   +1 more source