Trends in polar sea ice and associated global atmospheric circulations

Grant number: DP160101997 | Funding period: 2016 - 2021

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Abstract

The project aims to analyse the trends in sea ice extent over the polar regions, and explain them in terms of changes in the local and remote atmospheric circulation. In recent decades, Arctic sea ice has decreased dramatically, while increasing in the Antarctic. The resolution of this paradox is a pressing issue in climate science, as is the broad question of how sea ice influences, and is influenced by, climate conditions in the mid-latitudes and tropics. Anticipated outcomes include a better understanding of the nature of links between Australian climate and Antarctic ice, and between United States climate extremes and Arctic ice.

Related publications (13)

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Antarctic skin temperature warming related to enhanced downward longwave radiation associated with increased atmospheric advection of moisture and temperature

Kazutoshi Sato, Ian Simmonds

2021-06-01

We investigate linear trends in Antarctic skin temperatures (temperatures from about the top millimeter of the surface) over the f..

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Collaborative impact of the NAO and atmospheric blocking on European heatwaves, with a focus on the hot summer of 2018

Muyuan Li, Yao Yao, Ian Simmonds, Dehai Luo, Linhao Zhong, Xiaodan Chen

2020-11-01

Two intense heatwaves of July and early August 2018 are found to be associated with a European blocking (EB) event accompanied by ..

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Observed Relationships Between Sudden Stratospheric Warmings and European Climate Extremes

AD King, AH Butler, M Jucker, NO Earl, I Rudeva

2019-12-27

Sudden stratospheric warmings (SSWs) have been linked with anomalously cold temperatures at the surface in the middle to high lati..

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The winter midlatitude-Arctic interaction: effects of North Atlantic SST and high-latitude blocking on Arctic sea ice and Eurasian cooling

Binhe Luo, Lixin Wu, Dehai Luo, Aiguo Dai, Ian Simmonds

2019-03-01

In this paper, the effects of Eurasian circulation patterns such as high-latitude European blocking (HEB) and Ural blocking (UB) e..

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Polar Climate Change as Manifest in Atmospheric Circulation

JA Screen, TJ Bracegirdle, I Simmonds

2018-12-01

Purpose of Review: Dynamic manifestations of climate change, i.e. those related to circulation, are less well understood than are ..

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Changes in Atmospheric Blocking Circulations Linked with Winter Arctic Warming: A New Perspective

Dehai Luo, Xiaodan Chen, Aiguo Dai, Ian Simmonds

2018-09-01

Winter atmospheric blocking circulations such as Ural blocking (UB) have been recognized to play an important role in recent winte..

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Revisiting the Cause of the 1989-2009 Arctic Surface Warming Using the Surface Energy Budget: Downward Infrared Radiation Dominates the Surface Fluxes

Sukyoung Lee, Tingting Gong, Steven B Feldstein, James A Screen, Ian Simmonds

2017-10-28

The Arctic has been warming faster than elsewhere, especially during the cold season. According to the leading theory, ice-albedo ..

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Increased Quasi Stationarity and Persistence of Winter Ural Blocking and Eurasian Extreme Cold Events in Response to Arctic Warming. Part II: A Theoretical Explanation

Dehai Luo, Yao Yao, Aiguo Dai, Ian Simmonds, Linhao Zhong

2017-05-01

In Part I of this study, it was shown that the Eurasian cold anomalies related to Arctic warming depend strongly on the quasi stat..

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Increased Quasi Stationarity and Persistence of Winter Ural Blocking and Eurasian Extreme Cold Events in Response to Arctic Warming. Part I: Insights from Observational Analyses

Yao Yao, Dehai Luo, Aiguo Dai, Ian Simmonds

2017-05-01

Part I of this study examines the relationship among winter cold anomalies over Eurasia, Ural blocking (UB), and the background co..

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Dominant Covarying Climate Signals in the Southern Ocean and Antarctic Sea Ice Influence during the Last Three Decades

D Cerrone, G Fusco, I Simmonds, G Aulicino, G Budillon

2017-04-01

A composite dataset (comprising geopotential height, sea surface temperature, zonal and meridional surface winds, precipitation, c..

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A New Method for Identifying the Pacific-South American Pattern and Its Influence on Regional Climate Variability

Damien Irving, Ian Simmonds

2016-09-01

The Pacific-South American (PSA) pattern is an important mode of climate variability in the mid-to-high southern latitudes. It is ..

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Impact of Ural Blocking on Winter Warm Arctic-Cold Eurasian Anomalies. Part I: Blocking-Induced Amplification

Dehai Luo, Yiqing Xiao, Yao Yao, Aiguo Dai, Ian Simmonds, Christian LE Franzke

2016-06-01

In Part I of this study, the impact of Ural blocking (UB) on the warm Arctic-cold Eurasian (WACE) pattern associated with the wint..

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Impact of Ural Blocking on Winter Warm Arctic-Cold Eurasian Anomalies. Part II: The Link to the North Atlantic Oscillation

Dehai Luo, Yiqing Xiao, Yina Diao, Aiguo Dai, Christian LE Franzke, Ian Simmonds

2016-06-01

In Part I of this study, the Ural blocking (UB)-induced amplification role of winter warm Arctic-cold Eurasian (WACE) anomalies ha..

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