The emergence of surface-based Arctic amplification

Barrett, A. P.; Stroeve, Julienne; Kindig, David N.; Holland, Marika M.

doi:10.5194/tcd-2-601-2008

Cited by 391 publications

(513 citation statements)

References 29 publications

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“…As such, the surface air temperature shows less increase during these months as compared to other seasons. Outside of the summer months this heat is released back to the atmosphere leading to enhanced warming in winter compared to summer and amplified warming in the lower troposphere (Serreze et al 2009;Screen and Simmonds 2010). It can be seen that the warming in these CESM-LE simulations is also associated with dramatic sea ice loss ( Figure S5).…”

Section: Relationship To Changes In the Background Climatementioning

confidence: 73%

Seasonal differences in the response of Arctic cyclones to climate change in CESM1

2017

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The dramatic warming of the Arctic over the last three decades has reduced both the thickness and extent of sea ice, opening opportunities for business in diverse sectors and increasing human exposure to meteorological hazards in the Arctic. It has been suggested that these changes in environmental conditions have led to an increase in extreme cyclones in the region, therefore increasing this hazard. In this study, we investigate the response of Arctic synoptic scale cyclones to climate change in a large initial value ensemble of future climate projections with the CESM1-CAM5 climate model (CESM-LE). We find that the response of Arctic cyclones in these simulations varies with season, with significant reductions in cyclone dynamic intensity across the Arctic basin in winter, but with contrasting increases in summer intensity within the region known as the Arctic Ocean cyclone maximum. There is also a significant reduction in winter cyclogenesis events within the Greenland-Iceland-Norwegian sea region. We conclude that these differences in the response of cyclone intensity and cyclogenesis, with season, appear to be closely linked to changes in surface temperature gradients in the high latitudes, with Arctic poleward temperature gradients increasing in summer, but decreasing in winter.

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Section: Relationship To Changes In the Background Climatementioning

confidence: 73%

Seasonal differences in the response of Arctic cyclones to climate change in CESM1

2017

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“…This forms a third f i / f r regime, with even lower salinity (~25), but due to addition of sea-ice melting rather than due to additional river water. This layer may be a summer phenomenon only and possibly it may be a feature restricted to 2007, which was characterized by an exceptionally low summer sea-ice cover and a breakdown of the sea-ice cover especially in the western Canadian Basin (Serreze et al, 2009). …”

Section: New Siberian Islands and East Siberian Sea F R / F Imentioning

confidence: 99%

Origin of freshwater and polynya water in the Arctic Ocean halocline in summer 2007

Bauch

Loeff

Andersen

et al. 2011

Progress in Oceanography

189

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“…[2] Observations during recent decades show that there is greater surface warming occurring in the Arctic, particularly during winter, than at lower latitudes [Serreze et al, 2009;Serreze and Francis, 2006;Screen and Simmonds, 2010]. This disproportionate warming between high and low latitudes-known as "polar amplification"-is also a robust feature of global climate model simulations [Solomon et al, 2007].…”

Section: Introductionmentioning

confidence: 99%

Large‐scale circulation associated with moisture intrusions into the Arctic during winter

Woods

Caballero

Svensson

2013

Geophysical Research Letters

245

303

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[1] We examine the poleward transport of water vapor across 70 ı N during boreal winter in the ERA-Interim reanalysis product, focusing on intense moisture intrusion events. We analyze the large-scale circulation patterns associated with these intrusions and the impacts they have at the surface. A total of 298 events are identified between 1990 and 2010, an average of 14 per season, accounting for 28% of the total poleward transport of moisture across 70 ı N. They are concentrated over the main ocean basins at that latitude in the Labrador Sea, North Atlantic, Barents/Kara Sea, and Pacific. Composites of sea level pressure and potential temperature on the 2 potential vorticity unit surface during intrusions show a large-scale blocking pattern to the east of each basin, deflecting midlatitude cyclones and their associated moisture poleward. The interannual variability of intrusions is strongly correlated with variability in winter-mean surface downward longwave radiation and skin temperature averaged over the Arctic. Citation: Woods, C., R. Caballero, and G. Svensson (2013), Large-scale circulation associated with moisture intrusions into the Arctic during winter, Geophys. Res. Lett., 40,[4717][4718][4719][4720][4721]

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The emergence of surface-based Arctic amplification

Cited by 391 publications

References 29 publications

Seasonal differences in the response of Arctic cyclones to climate change in CESM1

Seasonal differences in the response of Arctic cyclones to climate change in CESM1

Origin of freshwater and polynya water in the Arctic Ocean halocline in summer 2007

Large‐scale circulation associated with moisture intrusions into the Arctic during winter

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