Climate impacts of the Atlantic Multidecadal Oscillation

  title={Climate impacts of the Atlantic Multidecadal Oscillation},
  author={Jeff R. Knight and Chris K. Folland and Adam A. Scaife},
  journal={Geophysical Research Letters},
The Atlantic Multidecadal Oscillation (AMO) is a near‐global scale mode of observed multidecadal climate variability with alternating warm and cool phases over large parts of the Northern Hemisphere. Many prominent examples of regional multidecadal climate variability have been related to the AMO, such as North Eastern Brazilian and African Sahel rainfall, Atlantic hurricanes and North American and European summer climate. The relative shortness of the instrumental climate record, however… 

Figures and Tables from this paper

Climate impacts of recent multidecadal changes in Atlantic Ocean Sea Surface Temperature: a multimodel comparison

During the twentieth century sea surface temperatures in the Atlantic Ocean exhibited prominent multidecadal variations. The source of such variations has yet to be rigorously established—but the

Decomposition of the Atlantic Multidecadal Variability in a Historical Climate Simulation

The Atlantic multidecadal variability (AMV) modulates various climate features worldwide with enormous societal and economic implications, including variations in hurricane activity in the Atlantic,

The Atlantic Multidecadal Oscillation Inferred from the Forced Climate Response in Coupled General Circulation Models

Abstract Instrumental sea surface temperature records in the North Atlantic Ocean are characterized by large multidecadal variability known as the Atlantic multidecadal oscillation (AMO). The lack of

The Dynamical Influence of the Atlantic Multidecadal Oscillation on Continental Climate

AbstractThe Atlantic multidecadal oscillation (AMO) in sea surface temperature (SST) has been shown to influence the climate of the surrounding continents. However, it is unclear to what extent the

Atlantic multidecadal variability in an ensemble of multi-century climate simulations

The Atlantic Multidecadal Variability (AMV) is a coherent pattern of variability of the North Atlantic Sea Surface Temperature (NA SST) field affecting several components of the climate system in the

Robust features of Atlantic multi‐decadal variability and its climate impacts

Atlantic Multi‐decadal Variability (AMV), also known as the Atlantic Multi‐decadal Oscillation (AMO), is characterized by a sharp rise and fall of the North Atlantic basin‐wide sea surface

Multidecadal Climate Variability in Observed and Modeled Surface Temperatures

Abstract This study identifies interdecadal natural climate variability in global surface temperatures by subtracting, from the observed temperature evolution, multimodel ensemble mean based on the

The Atlantic Multidecadal Oscillation controls the impact of the North Atlantic Oscillation on North European climate

European climate is heavily influenced by the North Atlantic Oscillation (NAO). However, the spatial structure of the NAO is varying with time, affecting its regional importance. By analyzing an

Forcing of the wintertime atmospheric circulation by the multidecadal fluctuations of the North Atlantic ocean

The North Atlantic sea surface temperature exhibits fluctuations on the multidecadal time scale, a phenomenon known as the Atlantic Multidecadal Oscillation (AMO). This letter demonstrates that the

Impact of the Atlantic Multidecadal Oscillation on Baltic Sea Variability

The Atlantic Multidecadal Oscillation (AMO) is a natural mode of variability of the North Atlantic sea surface temperature. The AMO can be used to describe the complex interaction of the coupled



A signature of persistent natural thermohaline circulation cycles in observed climate

Analyses of global climate from measurements dating back to the nineteenth century show an ‘Atlantic Multidecadal Oscillation’ (AMO) as a leading large‐scale pattern of multidecadal variability in

Oceanic forcing of the late 20th century Sahel drought

The Sahel region of Africa underwent a pronounced interdecadal drying trend in the latter half of the 20th century. In order to investigate this drying trend, several ensembles of numerical

Pacific and Atlantic Ocean influences on multidecadal drought frequency in the United States

Should the current positive AMO (warm North Atlantic) conditions persist into the upcoming decade, it is suggested two possible drought scenarios that resemble the continental-scale patterns of the 1930s and 1950s drought.

The Atlantic Multidecadal Oscillation and its relation to rainfall and river flows in the continental U.S.

North Atlantic sea surface temperatures for 1856–1999 contain a 65–80 year cycle with a 0.4 °C range, referred to as the Atlantic Multidecadal Oscillation (AMO) by Kerr [2000]. AMO warm phases

Interdecadal Variations in North Atlantic Sea Surface Temperature and Associated Atmospheric Conditions

Abstract Evidence is presented for a distinct Pattern Of ocean-atmosphere relationship associated with interdecadal variability in the North Atlantic region. Using a century of surface marine

Atlantic Ocean Forcing of North American and European Summer Climate

New evidence is presented that basin-scale changes in the Atlantic Ocean, probably related to the thermohaline circulation, have been an important driver of multidecadal variations in the summertime climate of both North America and western Europe.

Inter-decadal modulation of the impact of ENSO on Australia

Abstract The success of an ENSO-based statistical rainfall prediction scheme and the influence of ENSO on Australia are shown to vary in association with a coherent, inter-decadal oscillation in

The Impact of Mediterranean SSTs on the Sahelian Rainfall Season

Abstract A variety of regional and global sea surface temperature (SST) patterns are known to affect interannual to decadal variations of summer rainfall over the Sahel, and for most of these

Oceanic Forcing of Sahel Rainfall on Interannual to Interdecadal Time Scales

Evidence is presented to suggest that variability of rainfall in the Sahel results from the response of the African summer monsoon to oceanic forcing, amplified by land-atmosphere interaction.

Circulation mechanisms related to northeast Brazil rainfall anomalies

This study explores the role of the upper ocean for circulation anomalies in the overlying atmosphere, with focus on the late boreal winter and extreme climatic events in northeast Brazil. Data