Results 91 to 100 of about 8,821 (198)

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

Influence of Western Pacific Madden–Julian Oscillation on New York City's Record‐Breaking Air Pollution in Early June 2023

Geophysical Research Letters
In early June 2023, New York City (NYC) and other cities in the northeastern US experienced a severe air pollution event. Although reports associated this hazardous pollution event with the smoke from Canadian wildfires, the factors triggering the ...
Yan Zhu, Pang‐chi Hsu, Yitian Qian
doaj   +1 more source

A Climatology of Mesoscale Convective System Hazards in the United States and Their Representation in a Convection‐Permitting Model

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 5, 16 March 2026.
Abstract Mesoscale convective systems (MCSs) are large, organized convective storms that frequently produce flash floods and other severe hazards such as damaging winds, hail, and tornadoes. Developing an observationally based MCS hazard climatology is important for establishing a baseline to evaluate the representation of these events in numerical ...
Wenjun Cui, Kimberly A. Hoogewind, Thomas J. Galarneau Jr.   +2 more
wiley   +1 more source

Assessment of the Madden‐Julian Oscillation in CMIP6 Models Based on Moisture Mode Theory

Geophysical Research Letters
The moist processes of the Madden‐Julian Oscillation (MJO) in the Coupled Model Intercomparison Project Phase 6 models are assessed using moisture mode theory‐based diagnostics over the Indian Ocean (10°S–10°N, 75°E–100°E). Results show that no model can
Qiao‐Jun Lin, Víctor C. Mayta, Ángel F. Adames Corraliza   +2 more
doaj   +1 more source

Seasonal Environmental Characteristics for the Tropical Cyclone Genesis in the Indian Ocean during the CINDY2011/DYNAMO Field Experiment

Atmosphere, 2016
This study investigated the seasonal environmental characteristics for tropical cyclone genesis (TCG) over the Indian Ocean during the Cooperative Indian Ocean Experiment on Intraseasonal Variability in the Year 2011 and the Dynamics of the Madden–Julian
Aya Tsuboi, Tetsuya Takemi, Kunio Yoneyama   +2 more
doaj   +1 more source

Analisis Pengaruh Monsun Dan Osilasi Dua Tahunan Troposfer Dalam Pola Curah Hujan Beberapa Daerah Di Benua Maritim Indonesia [PDF]

, 2007
Monsun (dikenal juga sebagai fenomena AO : Annual Oscillation) dan TBO (Tropospheric Biennial Oscillation) adalah contoh bentuk variasi tahunan dan antar tahunan elemen iklim (terutama curah hujan) yang sangat berpengaruh terhadap pola ataupun ...
Arief, Suryantoro
core  

Synchronisation of Extreme Precipitation and Sea Surface Temperature Events in the Northern Hemisphere: A Complex Network Approach

International Journal of Climatology, Volume 46, Issue 3, 15 March 2026.
Using complex network theory and event synchronisation, we find distinct spatiotemporal structures of extreme precipitation and sea surface temperature events across the Northern Hemisphere. Our results show strong local and long‐range connectivity in terrestrial extremes, driven by atmospheric dynamics, contrasting with more localised marine extremes ...
Connor Saari, Jürgen Kurths, Gabriele Villarini, Behzad Ghanbarian   +3 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

Karakteristik Madden-Julian Oscillation (MJO) Ketika El-Nino Southern Oscillation (ENSO)

Wahana Fisika: Jurnal Penelitian Fisika dan Terapannya, 2017
Perkembangan peristiwa El-Nino Southern Oscillation (ENSO) menunjukkan peran penting bagi Madden-Julian Oscillation (MJO). Variasi angin permukaan (UWND) dan konveksi (OLR) intramusiman yang merupakan komponen dari variabilitas MJO sangat berinteraksi ...
Fadhlil Rizki Muhammad, Yudha Kristanto, Imam Wahyu Amanullah   +2 more
doaj  

Modal Interference Drives Madden‐Julian Oscillation Evolution and Predictability

Geophysical Research Letters
A data‐driven dynamical filter is developed to characterize Madden‐Julian Oscillation (MJO) variability, by representing tropical variability with nonorthogonal empirical‐dynamical modes that allow for constructive and destructive interference.
David H. Marsico, John R. Albers, Matthew Newman, Maria Gehne, Juliana Dias, George N. Kiladis, Emerson LaJoie, Yan Wang   +7 more
doaj   +1 more source