Results 81 to 90 of about 23,688 (213)

Overcoming Set Imbalance in Data‐Driven Parameterization: A Case Study of Gravity Wave Momentum Transport

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 2, February 2026.
Abstract Machine learning for the parameterization of subgrid‐scale processes in climate models has been widely researched and adopted in a few models. A key challenge in developing data‐driven parameterization schemes is how to properly represent rare, but important events that occur in geoscience data sets.
L. Minah Yang, Edwin P. Gerber
wiley   +1 more source

Skillful empirical subseasonal prediction of landfalling atmospheric river activity using the Madden–Julian oscillation and quasi-biennial oscillation

npj Climate and Atmospheric Science, 2018
Upon landfall, atmospheric rivers (ARs)—plumes of intense water vapor transport—often trigger weather and hydrologic extremes. Presently, no guidance is available to alert decision makers to anomalous AR activity within the subseasonal time scale (~2–5 ...
B. D. Mundhenk, E. Barnes, E. Maloney, Cory F. Baggett   +3 more
semanticscholar   +1 more source

Role of equatorial waves and convective gravity waves in the 2015/16 quasi-biennial oscillation disruption

Atmospheric Chemistry and Physics, 2020
. In February 2016, the descent of the westerly phase of the quasi-biennial oscillation (QBO) was unprecedentedly disrupted by the development of easterly winds.
Min-Jee Kang, H. Chun, R. Garcia
semanticscholar   +1 more source

Characteristics of Moisture Transport in Rainstorms in Different Regions of Eastern China Under the Background of Northeast China Cold Vortex in Warm‐Season

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Revealing the characteristics of moisture transport in heavy rainfall events in eastern China under the Northeast China Cold Vortex (NCCV) background holds important scientific and practical value for improving precipitation prediction accuracy. This study uses reanalysis data, surface observations, and a Lagrangian trajectory model to compare
Hao Yang, Po Hu, Guanyu Xu, Wen Zhou, Jingyu Wang, Xia Wan   +5 more
wiley   +1 more source

Lagged Response of MJO Convection and Precipitation to Solar Ultraviolet Variations on Intraseasonal Time Scales

Geophysical Research Letters
Composite analyses of NOAA satellite‐based outgoing longwave radiation data and ERA5 reanalysis data for nearly six solar maximum periods support the existence of a response of tropical convection and precipitation to short‐term (∼27‐day) solar ...
C. A. Hoopes, L. L. Hood, T. J. Galarneau Jr.   +2 more
doaj   +1 more source

First Successful Hindcasts of the 2016 Disruption of the Stratospheric Quasi‐biennial Oscillation

Geophysical Research Letters, 2018
In early 2016 the quasi‐biennial oscillation in tropical stratospheric winds was disrupted by an anomalous easterly jet centered at ~40 hPa, a development that was completely missed by all operational extended range weather forecast systems.
S. Watanabe, K. Hamilton, S. Osprey, Y. Kawatani, E. Nishimoto   +4 more
doaj   +1 more source

Prediction of the quasi‐biennial oscillation with a multi‐model ensemble of QBO‐resolving models

Quarterly Journal of the Royal Meteorological Society, 2020
A multi‐model study is carried out to investigate the ability of models to predict the evolution of the quasi‐biennial oscillation (QBO) up to 12 months in advance.
T. Stockdale, Young‐Ha Kim, J. Anstey, F. Palmeiro, N. Butchart, Adam A. Scaife, M. Andrews, A. Bushell, M. Dobrynin, J. García-Serrano, K. Hamilton, Y. Kawatani, F. Lott, C. McLandress, H. Naoe, S. Osprey, H. Pohlmann, J. Scinocca, S. Watanabe, K. Yoshida, S. Yukimoto   +20 more
semanticscholar   +1 more source

A New Method for Probabilistic Spatiotemporal Forecasts of Solar Soft X‐Ray “S‐Class” (>X10) Superflares

Journal of Geophysical Research: Space Physics, Volume 131, Issue 2, February 2026.
Abstract Solar superflares of S‐class (>X10 in soft X‐rays) pose extreme space weather hazards, yet their prediction remains a fundamental challenge owing to their rapid and transient natures and the limitations of conventional event‐based forecasts. We introduce for the first time, a probabilistic spatiotemporal framework designed to identify extended
V. M. Velasco Herrera, G. Velasco Herrera, W. Soon, A. Özgüç, N. Babynets, A. Tlatov, M. Švanda, S. Qiu, S. Baliunas, B. Kotan, G. González González, L. A. Bautista Flores, M. Pazos   +12 more
wiley   +1 more source

Quasiperiodic Variations of the GOES Soft X-Ray Flares during Solar Cycles 21–25

The Astrophysical Journal Supplement Series
The long-term variations of quasiperiodic solar flares are of great importance for a better understanding and accurate prediction of solar flare activity.
Guoqing Huang, Guoding Duan, Miao Wan, Xinhua Zhao, Tingting Xu, Linhua Deng, Jie Cao, Wenhua Wang, Weihong Zhou   +8 more
doaj   +1 more source

Observed and Simulated Teleconnections Between the Stratospheric Quasi‐Biennial Oscillation and Northern Hemisphere Winter Atmospheric Circulation

Journal of Geophysical Research: Atmospheres, 2019
The Quasi‐Biennial Oscillation (QBO) is the dominant mode of interannual variability in the tropical stratosphere, with easterly and westerly zonal wind regimes alternating over a period of about 28 months. It appears to influence the Northern Hemisphere
M. Andrews, J. Knight, Adam A. Scaife, Yixiong Lu, Tongwen Wu, L. Gray, V. Schenzinger   +6 more
semanticscholar   +1 more source