Search Results - "Nnamchi, Hyacinth C."

Simulation and Projection of the Southern Hemisphere Annular Mode in CMIP5 Models by Zheng, Fei, Li, Jianping, Clark, Robin T., Nnamchi, Hyacinth C.

“…Climate variability in the Southern Hemisphere (SH) extratropical regions is dominated by the SH annular mode (SAM). Future changes in the SAM could have a…”
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Diabatic heating governs the seasonality of the Atlantic Niño by Nnamchi, Hyacinth C., Latif, Mojib, Keenlyside, Noel S., Kjellsson, Joakim, Richter, Ingo

“…The Atlantic Niño is the leading mode of interannual sea-surface temperature (SST) variability in the equatorial Atlantic and assumed to be largely governed by…”
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North Atlantic oscillation controls multidecadal changes in the North Tropical Atlantic−Pacific connection by Ding, Ruiqiang, Nnamchi, Hyacinth C., Yu, Jin-Yi, Li, Tim, Sun, Cheng, Li, Jianping, Tseng, Yu‐Heng, Li, Xichen, Xie, Fei, Feng, Juan, Ji, Kai, Li, Xumin

“…By exciting subtropical teleconnections, sea surface temperature (SST) anomalies in the North Tropical Atlantic (NTA) during boreal spring can trigger El…”
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Thermodynamic controls of the Atlantic Niño by Nnamchi, Hyacinth C., Li, Jianping, Kucharski, Fred, Kang, In-Sik, Keenlyside, Noel S., Chang, Ping, Farneti, Riccardo

“…Prevailing theories on the equatorial Atlantic Niño are based on the dynamical interaction between atmosphere and ocean. However, dynamical coupled…”
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Influence of the South Atlantic Ocean Dipole on West African Summer Precipitation by Nnamchi, Hyacinth C., Li, Jianping

“…This paper demonstrates a causal link between the air–sea phenomenon referred to as the South Atlantic Ocean (SAO) dipole (SAOD) and the interannual…”
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An Equatorial–Extratropical Dipole Structure of the Atlantic Niño by Nnamchi, Hyacinth C., Li, Jianping, Kucharski, Fred, Kang, In-Sik, Keenlyside, Noel S., Chang, Ping, Farneti, Riccardo

“…Equatorial Atlantic variability is dominated by the Atlantic Niño peaking during the boreal summer. Studies have shown robust links of the Atlantic Niño to…”
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Divergent future change in South Atlantic Ocean Dipole impacts on regional rainfall in CMIP6 models by Nworgu, Uzoma C, Nnamchi, Hyacinth C, Rosário, Nilton E

“…Abstract The South Atlantic Ocean Dipole (SAOD) exerts strong influence on climate variability in parts of Africa and South America. Here we assess the ability…”
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Strengthening atmospheric circulation and trade winds slowed tropical Pacific surface warming by Latif, Mojib, Bayr, Tobias, Kjellsson, Joakim, Lübbecke, Joke F., Martin, Thomas, Nnamchi, Hyacinth C., Park, Wonsun, Savita, Abhishek, Sun, Jing, Dommenget, Dietmar

“…Abstract The globally averaged sea-surface temperature (SST) has steadily increased in the last four decades, consistent with the rising atmospheric greenhouse…”
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Pan-Atlantic decadal climate oscillation linked to ocean circulation by Nnamchi, Hyacinth C., Farneti, Riccardo, Keenlyside, Noel S., Kucharski, Fred, Latif, Mojib, Reintges, Annika, Martin, Thomas

“…Abstract Atlantic climate displays an oscillatory mode at a period of 10–15 years described as pan-Atlantic decadal oscillation. Prevailing theories on the…”
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Simulated impacts of the South Atlantic Ocean Dipole on summer precipitation at the Guinea Coast by Nnamchi, Hyacinth C., Li, Jianping, Kang, In-Sik, Kucharski, Fred

“…An intermediate complexity atmospheric general circulation model has been used to investigate the influence of the South Atlantic Ocean (SAO) dipole (SAOD) on…”
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Analogous seasonal evolution of the South Atlantic SST dipole indices by Nnamchi, Hyacinth C., Kucharski, Fred, Keenlyside, Noel S., Farneti, Riccardo

“…Two variants of sea‐surface temperature (SST) dipole indices for the South Atlantic Ocean (SAO) has been previously described representing: (1) the South…”
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Inconsistent Atlantic Links to Precipitation Extremes over the Humid Tropics by Nnamchi, Hyacinth C., Diallo, Ismaila

“…This study investigates extreme wet and dry conditions over the humid tropics and their connections to the variability of the tropical ocean basins using…”
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Variability and trends of atmospheric moisture in recent West African monsoon season and the Coordinated Regional Downscaling Experiment‐Africa projected 21st century scenarios by Okoro, Ugochukwu K., Chen, Wen, Nath, Debashis, Nnamchi, Hyacinth C.

“…The interannual variability and trends of atmospheric moisture flux convergence (MFC) and the flux transport and their roles in wet season rainfall variability…”
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Does a dipole mode really exist in the South Atlantic Ocean? by Nnamchi, Hyacinth C., Li, Jianping, Anyadike, Raymond N. C.

“…This study investigates the existence of a dipole mode in the sea surface temperatures (SST) over the South Atlantic Ocean (SAO), using observational and…”
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A Satellite Era Warming Hole in the Equatorial Atlantic Ocean by Nnamchi, Hyacinth C., Latif, Mojib, Keenlyside, Noel S., Park, Wonsun

“…Observations during the satellite era 1979–2018 only depict small sea surface temperature (SST) trends over the Equatorial Atlantic cold tongue region in…”
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Leading patterns of the satellite-era summer precipitation over West Africa and associated global teleconnections by Nnamchi, Hyacinth C., Dike, Victor N., Akinsanola, Akintomide A., Okoro, Ugochukwu K.

“…Precipitation patterns over West Africa display a broad range of timescales, from the intraseasonal to decadal timescales, as well as multidecadal shifts. Here…”
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Thermodynamic controls of the Atlantic Ni?o by Nnamchi, Hyacinth C, Li, Jianping, Kucharski, Fred, Kang, In-sik, Keenlyside, Noel S, Chang, Ping, Farneti, Riccardo

“…Prevailing theories on the equatorial Atlantic Niño are based on the dynamical interaction between atmosphere and ocean. However, dynamical coupled…”
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