نتایج جستجو برای: multidecadal variation

تعداد نتایج: 297749  

2001
Michael E. Mann

Recent climate reconstructions are analyzed specifically for insights into those patterns of climate variability in past centuries with greatest impact on the North American region. Regional variability, largely associated with the El Nino/Southern Oscillation (ENSO) phenomenon, the North Atlantic Oscillation (NAO), and multidecadal patterns of natural variability, are found to mask the emergen...

2016
Xiaoning Xie Hongli Wang Xiaodong Liu Jiandong Li Zhaosheng Wang Yangang Liu

Because industrial emissions of anthropogenic aerosols over East Asia have greatly increased in recent decades, the interactions between atmospheric aerosols and the East Asian summer monsoon (EASM) have attracted enormous attention. To further understand the aerosol-EASM interaction, we investigate the impacts of anthropogenic aerosols on the EASM during the multidecadal strong (1950–1977) and...

2004
Anthony S. Kiem Stewart W. Franks

A number of previous studies have identified changes in the climate occurring on decadal to multi-decadal time-scales. Recent studies also have revealed multi-decadal variability in the modulation of the magnitude of El Niño–Southern Oscillation (ENSO) impacts on rainfall and stream flow in Australia and other areas. This study investigates multidecadal variability of drought risk by analysing ...

2005
JOHANN H. JUNGCLAUS HELMUTH HAAK MOJIB LATIF UWE MIKOLAJEWICZ

Analyses of a 500-yr control integration with the non-flux-adjusted coupled atmosphere–sea ice–ocean model ECHAM5/Max-Planck-Institute Ocean Model (MPI-OM) show pronounced multidecadal fluctuations of the Atlantic overturning circulation and the associated meridional heat transport. The period of the oscillations is about 70–80 yr. The low-frequency variability of the meridional overturning cir...

2017
Michael G. Sanderson Theo Economou Kate H. Salmon Sarah E. O. Jones

Increases in numbers and lengths of heat waves have previously been identified in global temperature records, including locations within Europe. However, studies of changes in UK heat wave characteristics are limited. Historic daily maximum temperatures from 29 weather stations with records exceeding 85 years in length across the country were examined. Heat waves were defined as periods with un...

Journal: :Frontiers in Marine Science 2022

Although numerous studies on Eulerian mesoscale eddies with closed contours of sea surface height (SSH) or streamline have been conducted in the Gulf Mexico (GoM), a comprehensive study their temporal and spatial characteristics is still lacking. In this study, we combine three eddy detection algorithms to detect from 26-year SSH record GoM examine characteristics. We find distinct between Loop...

Journal: :Geophysical Research Letters 2022

Abstract Multidecadal variability of Atlantic Meridional Overturning Circulation (AMOC) has been reconstructed by various proxies, simulated in climate models, and linked to multidecadal Arctic salinity variability. Here we construct a simple conceptual model understand the two‐way interactions with AMOC through delayed oscillator mechanism. We revise Stommel's Two‐Box Model including an advect...

Journal: :Journal of Geophysical Research: Earth Surface 2016

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