Results 61 to 70 of about 11,251 (232)

Covariance of the intertropical discontinuity and African easterly jet in Sahelian wet and dry years

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Intertropical discontinuity and African easterly jet (AEJ) positions are strongly correlated, with a more pronounced linear relationship across wet years. Surface heat flux anomalies modify low‐level temperature and sensible heat flux gradients that shift the AEJ core south of the gradient maxima in both composites.
Marian Amoakowaah Osei, Cornelia Klein, Christopher M. Taylor, Douglas J. Parker, Michael Baidu   +4 more
wiley   +1 more source

Intraseasonal atmospheric variability under climate trends

Chaos: An Interdisciplinary Journal of Nonlinear Science
Low-order climate models have played an important role in understanding the low-frequency variability of the atmospheric circulation and how it can be affected by trends in anthropogenic forcing. A simple quasi-geostrophic model of the midlatitudes’ circulation (Lorenz, Tellus, 1984, 1990) is studied from the perspective of the theory of ...
B. Maraldi, H. A. Dijkstra, M. Ghil
openaire   +4 more sources

Predictability of Intra-Seasonal Descriptors of Rainy Season over Senegal Using Global SST Patterns

Atmosphere, 2022
Seasonal forecasting of the rainfall characteristics in Sahel is of crucial interest in determining crop variability in these countries. This study aims to provide further characterization of nine rainfall metrics over Senegal (Onset, cessation, LRS, CDD,
Abdou Kader Touré, Cheikh Modou Noreyni Fall, Moussa Diakhaté, Dahirou Wane, Belen Rodríguez-Fonseca, Ousmane Ndiaye, Mbaye Diop, Amadou Thierno Gaye   +7 more
doaj   +1 more source

Indian and African monsoons: Trajectories and interactions

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The catch basin of marine air particles of the Indian monsoon is the tropical Indian ocean, whilst that of the African monsoon is the east tropical Atlantic. However, the oscillations induced by the monsoonal interactions favour particle exchange between the two basins. These transitions are abrupt in the presence of stochastic resonance. The monsoonal
Giovanni A. Dalu, Marina Baldi
wiley   +1 more source

Intraseasonal Variability of Equatorial Indian Ocean Zonal Currents [PDF]

Journal of Climate, 2007
Abstract New satellite and in situ observations show large intraseasonal (10–60 day) variability of surface winds and upper-ocean current in the equatorial Indian Ocean, particularly in the east. An ocean model forced by the Quick Scatterometer (QuikSCAT) wind stress is used to study the dynamics of the intraseasonal zonal current.
Sengupta, Debasis, Senan, Retish, Goswami, B. N., Vialard, Jérôme   +3 more
openaire   +4 more sources

The characteristics of squall lines in the Southeast Asia region

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Squall lines over the Maritime Continent were analysed using 20 years of IMERG GPM data and classified into four regional clusters. Significant regional differences were found in their size, intensity, lifespan, and propagation. Nighttime squall lines are primarily driven by the convergence of opposing offshore flows and the convergence of monsoonal ...
Jeong‐Yik Diong, Prince Xavier, Muhammad Firdaus Ammar Abdullah, Juliane Schwendike   +3 more
wiley   +1 more source

The intraseasonal oscillation of pCO2 over the southeast coast of Vietnam in boreal summer

Environmental Research Communications
The intraseasonal oscillation (ISO) of the oceanic surface partial pressure of carbon dioxide ( p CO _2 ) is one of the primary subsequent effects of the monsoon-driven upwelling along the southeast coast of Vietnam (SCV) in boreal summer.
Miaoyin Zhang, Xueming Zhu, Xuanliang Ji
doaj   +1 more source

Characteristics and mechanisms of intraseasonal oscillation of mixed layer salinity in the western formation region of North Pacific Tropical Water

Frontiers in Marine Science
Based on a time series of seawater salinity profile data collected by moored buoys, in conjunction with Soil Moisture Active Passive (SMAP) sea surface salinity (SSS) data from June 2015 to May 2022, as well as additional observational data, this study ...
Kai Li, Yun Qiu, Yun Qiu, Chunsheng Jing, Shangzhan Cai, Jindian Xu, Hangyu Chen   +6 more
doaj   +1 more source

Development of convection along the SPCZ within a Madden-Julian oscillation [PDF]

, 1996
A subtropical Rossby wave propagation mechanism is proposed to account for the poleward and eastward progression of intraseasonal convective anomalies along the South Pacific Convergence Zone (SPCZ) that is observed in a significant proportion of Madden ...
Ardanuy, Emanuel, Gill, Heckley, Hoskins, Hoskins, Hoskins, Hoskins, Hsu, Jin, Ju, Kiladis, Knutson, Kodama, Lau, Matthews, Nastula, Neelin, Rodwell, Rui, Vincent, Wang, Webster, Webster, Weickmann, Weickmann   +25 more
core   +2 more sources

An opportunity index to anticipate when subseasonal predictions are useful

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Simultaneously active subseasonal windows of forecast opportunity can be combined into a single opportunity index, which can be used operationally to anticipate enhanced or reduced subseasonal prediction skill. For predictions of temperature anomalies in Switzerland during summer—a region and season with particularly low predictability—skill can nearly
Dominik Büeler, Maria Pyrina, Adel Imamovic, Christoph Spirig, Daniela I. V. Domeisen   +4 more
wiley   +1 more source