Results 71 to 80 of about 849 (154)

Mechanism Studies of Madden-Julian Oscillation Coupling Into the Mesosphere/Lower Thermosphere Tides Using SABER, MERRA-2, and SD-WACCMX. [PDF]

J Geophys Res Atmos, 2021
Kumari K, Wu H, Long A, Lu X, Oberheide J.   +4 more
europepmc   +1 more source

Accurate Column Moist Static Energy Budget in Climate Models. Part 1: Conservation Equation Formulation, Methodology, and Primary Results Demonstrated Using GISS ModelE3

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 3, March 2026.
Abstract Column‐integrated moist static energy (MSE) budgets underpin theories of tropical convection and circulation, yet in reanalyses and climate models the budget rarely closes; residuals routinely match the leading terms and mask physical insights.
Kuniaki Inoue, Maxwell Kelley, Ann M. Fridlind, Michela Biasutti, Gregory S. Elsaesser   +4 more
wiley   +1 more source

Potential Strengthening of the Madden–Julian Oscillation Modulation of Tropical Cyclogenesis

Atmosphere
A typical Madden–Julian Oscillation (MJO) generates a large region of enhanced rainfall over the equatorial Indian Ocean that moves slowly eastward into the western Pacific.
Patrick Haertel, Yu Liang
doaj   +1 more source

Harnessing Deep Learning for Dual Gains in S2S‐Scale Soil Moisture Forecasting and Flash Drought Mechanisms

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Flash drought (FD), so‐named for its abrupt and unforeseen onset, poses a significant challenge to forecasting, as current Numerical Weather Prediction (NWP) shows limited skill in the sub‐seasonal to seasonal timescale (S2S, 2‐week to 2‐month range).
Gui‐bin Yang, Jian‐xia Chang, Lu Zhang, Jong‐hun Kam, Yi Zheng, Yi‐min Wang, Ai‐jun Guo, Arif Hussain, An‐qi Liu   +8 more
wiley   +1 more source

Benchmarking Atmospheric Circulation Variability in an AI Emulator, ACE2, and a Hybrid Model, NeuralGCM

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Physics‐based atmosphere‐land models with prescribed sea surface temperature have notable successes but also biases in their ability to represent atmospheric variability compared to observations. Recently, AI emulators and hybrid models have emerged with the potential to overcome these biases, but still require systematic evaluation against ...
I. Baxter, H. A. Pahlavan, P. Hassanzadeh, K. Rucker, T. A. Shaw   +4 more
wiley   +1 more source

Changes in MJO Teleconnections in the Southeast U.S. Under Global Warming in the CESM2 Large Ensemble

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract We examined projected changes in Madden–Julian Oscillation (MJO) teleconnections over North America using 90 ensemble members from the Community Earth System Model Version 2 Large Ensemble (CESM‐LENS2) under the SSP370 scenario. In the warmer climate, the classic PNA‐like teleconnection strengthens and shifts eastward, with large ensemble ...
Jingxuan Cui, Eric D. Maloney
wiley   +1 more source

Linking Hadley Cell Instability to Slow Equatorial Motions in Reanalysis and CMIP6 Models

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract A recent theory–originally proposed for tropical depression (TD)‐type waves–is extended to the Madden‐Julian Oscillation (MJO) and convectively‐coupled equatorial Rossby (ER) waves across the Indo‐Western Pacific region using reanalysis and Coupled Model Intercomparison Project Phase 6 (CMIP6) data. This framework posits that waves grow from a
Qiao‐Jun Lin, Ángel F. Adames Corraliza, Víctor C. Mayta   +2 more
wiley   +1 more source

A Mechanism Denial Study on the Madden-Julian Oscillation

Journal of Advances in Modeling Earth Systems, 2011
A series of Madden-Julian oscillation (MJO) mechanism-denial experiments is performed using an atmospheric general circulation model (AGCM). Daily climatological seasonal cycles of i) surface latent heat flux, ii) net radiative heating rate, and iii ...
In-Sik Kang, Adam H. Sobel, Daehyun Kim
doaj  

Sources of Subseasonal Predictability for Precipitation in South America Based on Model Experiments

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract This study investigates the sources of predictability underlying subseasonal precipitation skill over South America in existing subseasonal prediction systems. Using subseasonal re‐forecasts from the NCAR‐CESM2 model, we demonstrate that significant skill persists even when interannual variability is removed.
Kathy Pegion, Emily Becker, Ben P. Kirtman   +2 more
wiley   +1 more source

The Moist Static Energy Budget of Australian Summer Monsoon Bursts in Climate Models: Insights From Present and Warming Climate Scenarios

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 4, 28 February 2026.
Abstract This study investigates the complex dynamics of burst evolution in the Australian summer monsoon under present‐day and warmer climate conditions. Using reanalysis data, historical atmosphere‐only simulations (AMIP), and simulations with uniformly increased sea surface temperatures (+4K; AMIP+4K), we examine how seasonal‐mean precipitation and ...
Sarthak Mohanty, Christian Jakob, Martin S. Singh   +2 more
wiley   +1 more source