Results 91 to 100 of about 7,697 (227)

Dynamics of Significant Intraseasonal Variability of Surface Chlorophyll‐a Concentration in the Far Western Tropical Pacific

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract While the far Western Tropical Pacific is known for interannual variability, we find intraseasonal variability (ISV) actually dominates surface chlorophyll (SChl) fluctuations, explaining >30% of variance. The Madden‐Julian Oscillation (MJO) acts as the key driver through three mechanisms: (a) positive MJO phase vertical mixing (enhanced winds
Hui Zhou, Xueqi Liu, Shuo Wang, Lei He, Xingru Feng   +4 more
wiley   +1 more source

The Role of Surface Friction in Tropical Intraseasonal Oscillation [PDF]

Monthly Weather Review, 2001
The Madden-Julian oscillation (MJO), or the tropical intraseasonal oscillation, has attracted much attention, ever since its discovery in the early seventies for reasons of both scientific understanding and practical forecasts. Among the theoretical interpretations of the MJO, the wave-CISK (conditional instability of the second kind) mechanism is the ...
Winston C. Chao, Baode Chen
openaire   +1 more source

Moisture‐Flux‐Sensitive Convection Strengthens MJO Preconditioning

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Despite decades of research, the Madden‐Julian Oscillation (MJO) remains challenging for global prediction systems, partly because its representation is sensitive to convection‐environment interactions. We evaluate a new prognostic convective closure in NOAA's Unified Forecast System (UFS) that incorporates large‐scale moisture‐flux ...
L. Bengtsson
wiley   +1 more source

A dynamical ocean feedback mechanism for the Madden-Julian Oscillation [PDF]

, 2010
Composite analysis is applied to study the dynamical ocean response to Madden-Julian (MJ) events, measured by anomalies in sea surface height from the merged TOPEX/Poseidon-European Remote Sensing satellite altimetry dataset.
Batstone, Battisti, Chelton, Chelton, Donald, Ducet, Durand, Edwards, Flatau, Foltz, Fu, Fu, Fu, Giese, Gill, Greenslade, Han, Han, Han, Hendon, Hendon, Hendon, Hsu, Inness, Jones, Katz, Kessler, Kummerow, Le Traon, Liebmann, Madden, Madden, Majda, Matthews, Matthews, Matthews, Matthews, Matthews, Matthews, Matthews, McCreary, McPhaden, McPhaden, Philander, Pohl, Rao, Roundy, Roundy, Saji, Salby, Shinoda, Shinoda, Tomczak, Valsala, Vialard, Waliser, Wang, Wheeler, Wilks, Woolnough, Woolnough, Xie, Zhang, Zhang   +63 more
core   +1 more source

Amplified Decline in Arctic Atmospheric Stability Under Arctic Warming

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Atmospheric stability quantifies the resistance of the atmosphere to vertical displacement and turbulent mixing. Under Arctic warming, the atmosphere has become more dynamically active, which may influence atmospheric stability. Using ERA5 reanalysis, we show that the decrease in Arctic atmospheric stability has been amplified relative to the ...
Guorui Shi, Lujun Zhang, Yuang Liu, Chen Zhou   +3 more
wiley   +1 more source

Modeling Circulation‐Precipitation Overlapped Co‐Evolution for Improving Subseasonal Prediction in the Yangtze River Basin

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Severe precipitation in the Yangtze River Basin (YRB) poses escalating flood risks, underscoring urgent needs for skillful subseasonal prediction. In this study, we develop an integrated dynamical‐statistical downscaling model based on overlapping circulation‐precipitation co‐evolution (OCPCE), which merges prior and concurrent circulation ...
Fang Zhou, Hong‐Li Ren, Li Gao, Yiwei Li, Lin Wang, Minghong Liu   +5 more
wiley   +1 more source

Distinct Impacts of Western and Eastern Maritime Continent Convection on the South China Sea Tropical Cyclone Activity in Autumn

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract Convection anomalies in the eastern and western Maritime Continent (MC) during boreal autumn exhibit distinct characteristics and climatic effects, but their impacts on South China Sea (SCS) tropical cyclones (TCs) remain unclear. Here we reveal that the eastern MC convection mode, although it explains less convection variance, exerts strong ...
Zeming Wu, Chundi Hu, Chengyang Zhang, Yuexing Cai   +3 more
wiley   +1 more source

The Effect of Boreal Summer Intraseasonal Oscillation on Evaporation Duct and Electromagnetic Propagation over the South China Sea

Atmosphere, 2020
Intraseasonal oscillation of the evaporation duct, lasting 30–60 days, has been identified over the South China Sea (SCS) summer monsoon region based on multiple reanalyses and observational data.
Wentao Jia, Weimin Zhang, Jiahua Zhu, Jilin Sun   +3 more
doaj   +1 more source

Testing the Hypothesis that the MJO is a Mixed Rossby-Gravity Wave Packet [PDF]

, 2011
The Madden Julian oscillation (MJO), also known as the intraseasonal oscillation (ISO), is a planetary-scale mode of variation in the tropical Indian and western Pacific Oceans. Basic questions about the MJO are why it propagates eastward at ~5
Ingersoll, Andrew P., Yang, Da
core   +1 more source

Eastward Propagation of Anomalous Indo–Pacific Walker Circulation During ENSO Transition

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract By analyzing the zonal mass streamfunction over the equatorial Indo–Pacific region in the period 1979–2024, we found that during the decaying phase of 13 out of 31 El Niño‐Southern Oscillation (ENSO) events, the anomalous Indo–Pacific Walker Circulation (IPWC) propagates steadily eastward across the warm pool. Vertical velocity, precipitation,
Longjun Fan, Tao Lian, Ruikun Hu, Ting Liu, Wendi Wu   +4 more
wiley   +1 more source