What question did this study set out to answer?

To determine the trajectories of intense autumn and winter moist air intrusions into the Arctic and assess their influence on regional atmospheric temperatures and sea ice cover.

March 14, 2016Journal of Climate

The Role of Moist Intrusions in Winter Arctic Warming and Sea Ice Decline

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To determine the trajectories of intense autumn and winter moist air intrusions into the Arctic and assess their influence on regional atmospheric temperatures and sea ice cover.
Tracked trajectories of intense moist air intrusions crossing 70°N into the Arctic basin during autumn and winter.
Evaluated vertical atmospheric temperature profiles and quantified multi-day changes in surface temperature and sea ice concentration over a two-decade period.
Moist intrusions produce bottom-amplified warming that transitions local conditions from a cold clear state with a strong inversion to a warm opaque state with a weaker inversion.
Intrusions passing over the Barents Sea marginal sea ice zone drive an ice margin retreat that persists for many days.
An increase in December and January intrusion events crossing 70°N accounts for roughly 45% of surface air temperature warming and 30% of sea ice concentration loss in the Barents Sea over the past two decades.

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Implication

Observational analysis reveals moist air intrusions drive warming and sea ice retreat in the Barents Sea, indicating a key driver of Arctic amplification.

Cite This Study

Woods et al. (2016) studied this question.

synapsesocial.com/papers/69dc69f5ac480df60a133391 https://doi.org/10.1175/jcli-d-15-0773.1

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Implication

Observational analysis reveals moist air intrusions drive warming and sea ice retreat in the Barents Sea, indicating a key driver of Arctic amplification.

The Role of Moist Intrusions in Winter Arctic Warming and Sea Ice Decline

Key Points

Discussion

Implication

Cite This Study

The Role of Moist Intrusions in Winter Arctic Warming and Sea Ice Decline

Key Points

Discussion

Implication

Cite This Study

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