Cyclone Impacts on Sea Ice Concentration in the Atlantic Arctic Ocean: Annual Cycle and Recent Changes

Aue, Lars; Rinke, Annette

doi:10.1029/2023gl104657

Cited by 2 publications

(2 citation statements)

References 34 publications

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“…This indicates that cyclone activity in both MIZ and AR can influence the reduction of sea ice. Some previous studies have investigated the relationship between Arctic cyclones and sea ice, they found that the impacts of cyclone activities on sea ice is likely influenced by both dynamic and thermodynamic factors (Aue et al, 2022;Aue & Rinke, 2023;Graham et al, 2019;Lukovich et al, 2021;Schreiber & Serreze, 2020;Tian et al, 2022). On the one hand, strong surface winds fracture the ice cover (Graham et al, 2019), which is consistent with the evolution of surface wind speeds in this paper (Figure 4c).…”

Section: Basic Characteristics Of Intense Arctic Cyclones In the Miz ...supporting

confidence: 89%

Comparison of Intense Summer Arctic Cyclones Between the Marginal Ice Zone and Central Arctic

Kong,

Lu,

Guan

et al. 2024

JGR Atmospheres

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Arctic cyclone activity is an important component of the local climate, and the frequent occurrence of extreme summer storms has raised widespread scientific interest. In this paper, we investigated the distinctive structural characteristics of intense summer Arctic cyclones by utilizing ERA‐Interim reanalysis data and employing a deep learning algorithm for cyclone detection. We found that the northern edge of Eurasia (i.e., the marginal ice zone (MIZ)) and the Alpha Ridge of Arctic Ocean (AR, i.e. central Arctic) are the two most active regions for intense Arctic cyclone activities in summer (from June to September). However, the surface conditions and coupling frequency between surface cyclone and tropopause polar vortices (TPVs) are distinct over these two regions. By further analysis of 100 intense cyclone activities in these two areas, respectively, we found that cyclones in MIZ are often smaller in size but higher in intensity at their maximum intensity, and their life cycles are generally shorter. MIZ cyclones are typically accompanied by a large Eady growth rate and frontal structure in the lower troposphere and their intensification primarily attributed to the thermal‐baroclinic process. In contrast, cyclones in AR are more frequently associated with higher potential vorticity (PV) values and pronounced PV downward intrusion from the stratosphere, as well as notable “upper warm‐lower cold” structures. The downward intrusion of TPVs and stratosphere vortices contribute to a decrease in the upper and column air mass deficit, leading to the intensification of surface Arctic cyclones in these regions.

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Section: Basic Characteristics Of Intense Arctic Cyclones In the Miz ...supporting

confidence: 89%

Comparison of Intense Summer Arctic Cyclones Between the Marginal Ice Zone and Central Arctic

Kong,

Lu,

Guan

et al. 2024

JGR Atmospheres

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“…Lukovich and others (2021) proposed that cyclone-induced sea-ice extent loss depends on the timing and location of the cyclone by analyzing the effects of the two intense cyclones occurred in August 2012 and August 2016 on sea-ice evolution. Aue and Rinke (2023) proved the impacts of cyclones on sea-ice conditions in the Atlantic Arctic strongly vary both in space and time, with intimate relation to the initial sea-ice conditions and the cyclone intensity.…”

Section: Introductionmentioning

confidence: 99%

On the effects of the timing of an intense cyclone on summertime sea-ice evolution in the Arctic

Tian,

Liang,

Zhao

et al. 2024

Ann. Glaciol.

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This study investigates the impacts of the timing of an extreme cyclone that occurred in August 2012 on the sea-ice volume evolution based on the Arctic Ice Ocean Prediction System (ArcIOPS). By applying a novel cyclone removal algorithm to the atmospheric forcing during 4–12 August 2012, we superimpose the derived cyclone component onto the atmospheric forcing one month later or earlier. This study finds that although the extreme cyclone leads to strong sea-ice volume loss in all runs, large divergence occurs in sea-ice melting mechanism in response to various timing of the cyclone. The extreme cyclone occurred in August, when enhanced ice volume loss is attributed to ice bottom melt primarily and ice surface melt secondarily. If the cyclone occurs one month earlier, ice surface melt dominates ice volume loss, and earlier appearance of open water within the ice zone initiates positive ice-albedo feedback, leading to a long lasting of the cyclone-induced impacts for approximately one month, and eventually a lower September ice volume. In contrast, if the cyclone occurs one month later, ice bottom melt entirely dominates ice volume loss, and the air-open water heat flux in the ice zone tends to offset ice volume loss.

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Cyclone Impacts on Sea Ice Concentration in the Atlantic Arctic Ocean: Annual Cycle and Recent Changes

Cited by 2 publications

References 34 publications

Comparison of Intense Summer Arctic Cyclones Between the Marginal Ice Zone and Central Arctic

Comparison of Intense Summer Arctic Cyclones Between the Marginal Ice Zone and Central Arctic

On the effects of the timing of an intense cyclone on summertime sea-ice evolution in the Arctic

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