نتایج جستجو برای: northern atlantic oscillation nao

تعداد نتایج: 184928  

Journal: :Journal of Machine Learning Research 2004
Jayanta Basak Anant Sudarshan Deepak Trivedi M. S. Santhanam

In this article, we apply the independent component analysis technique for mining spatio-temporal data. The technique has been applied to mine for patterns in weather data using the North Atlantic Oscillation (NAO) as a specific example. We find that the strongest independent components match the observed synoptic weather patterns corresponding to the NAO. We also validate our results by matchi...

This study has used TOMS AI as well as the reanalysis dataset of thirty-four years (1979-2012) to investigate the influence of atmospheric circulation on dust transport during the Harmattan period in West Africa, using Aerosol Index (AI) data, obtained from various satellite sensors. Changes in Inter-Tropical Discontinuity (ITD), Sea Surface Temperature (SST) over the Gulf of Guinea, and North ...

2007
L. A. RASMUSSEN H. CONWAY

A simple model using once-daily US National Centers for Environmental Prediction/US National Center for Atmospheric Research (NCEP/NCAR) re-analysis upper-air values estimates winter balance, summer balance and net balance at ten glaciers in Norway and two in Sweden with 0:37 r2 0:90: The October–May Arctic Oscillation (AO), an index of sea-level pressure (SLP) in the Northern Hemisphere, corre...

ژورنال: علوم آب و خاک 2006
علیرضا برهانی داریان, , احمد فاتحی مرج, , محمد حسین مهدیان, ,

Orumiyeh Lake basin is one of the important regions in Iran from water resources and environment standpoints. In this basin, substantial part of the annual precipitation occurrs in spring, winter, and fall seasons. Due to semi-arid climate of the basin, rainfall forecasting is an important issue for proper water resources planning and management, particularly in drought years. On the other hand...

علیرضا برهانی داریان, , احمد فاتحی مرج, , محمد حسین مهدیان, ,

Orumiyeh Lake basin is one of the important regions in Iran from water resources and environment standpoints. In this basin, substantial part of the annual precipitation occurrs in spring, winter, and fall seasons. Due to semi-arid climate of the basin, rainfall forecasting is an important issue for proper water resources planning and management, particularly in drought years. On the other hand...

2006
YOCHANAN KUSHNIR WALTER A. ROBINSON PING CHANG ANDREW W. ROBERTSON

This paper reviews the observational and theoretical basis for the prediction of seasonal-to-interannual (S/I) climate variability in the Atlantic sector. The emphasis is on the large-scale picture rather than on regional details. The paper is divided into two main parts: a discussion of the predictability of the North Atlantic Oscillation (NAO)—the dominant pattern of variability in the North ...

2009
Zhiwei Wu Bin Wang Jianping Li Fei-Fei Jin

[1] How to predict the year-to-year variation of the east Asian summer monsoon (EASM) is one of the most challenging and important tasks in climate prediction. It has been recognized that the EASM variations are intimately but not exclusively linked to the development and decay of El Niño or La Niña. Here we present observed evidence and numerical experiment results to show that anomalous North...

Journal: :فیزیک زمین و فضا 0
مهتاب رضائیان گروه فیزیک فضا، مؤسسه ژئوفیزیک دانشگاه تهران علیرضا محب الحجه گروه فیزیک فضا، مؤسسه ژئوفیزیک دانشگاه تهران فرهنگ احمدی گیوی گروه فیزیک فضا، مؤسسه ژئوفیزیک دانشگاه تهران محمدعلی نصراصفهانی گروه مهندسی آب، دانشگاه شهرکرد

the north atlantic oscillation (nao) is one of the most prominent modes of low-frequency variability over the atlantic basin in the northern hemisphere. in the past decades, the impact of nao has attracted increasing scientific interest because the nao exerts an important impact on the regional climate and weather in the north atlantic region and adjacent continents. of particular interest is t...

2015
Rémi Thiéblemont Katja Matthes Nour-Eddine Omrani Kunihiko Kodera Felicitas Hansen

Quasi-decadal variability in solar irradiance has been suggested to exert a substantial effect on Earth's regional climate. In the North Atlantic sector, the 11-year solar signal has been proposed to project onto a pattern resembling the North Atlantic Oscillation (NAO), with a lag of a few years due to ocean-atmosphere interactions. The solar/NAO relationship is, however, highly misrepresented...

Journal: :Journal of Sea Research 2022

This paper provides an overview of the current knowledge Atlantic forcing North Sea's hydro- and biogeochemical dynamics. The Oscillation (NAO) causes largest short-term variations via common large scale atmospheric wind-driven exchange water masses. On longer time scales zonal shifts in position subpolar front (SPF) eastern Atlantic, also triggered by NAO, determine oceanic settings northern c...

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