Biological and Environmental Research - Earth and Environmental System Sciences
Earth and Environmental System Modeling

Emergent Relationships Among Sea Ice, Longwave Radiation, and the Beaufort High Circulation Exposed Through Parameter Uncertainty Analysis

TitleEmergent Relationships Among Sea Ice, Longwave Radiation, and the Beaufort High Circulation Exposed Through Parameter Uncertainty Analysis
Publication TypeJournal Article
Year of Publication2019
AuthorsUrrego-Blanco, Jorge R., Hunke Elizabeth C., and Urban Nathan
JournalJournal of Geophysical Research: Oceans
Volume124
Number12
Pages9572-9589
Abstract / Summary

Using a perturbed parameter ensemble of a coupled climate model, emerging relationships are identified between sea ice area, net surface longwave radiation, and the atmospheric circulation over the Beaufort Gyre. There is a strong positive correlation between sea ice area and the net longwave radiation over the ocean‐ice surface during the melting season and a negative correlation during the freezing season. The mechanisms responsible for the longwave radiation balance at the surface are mainly driven by sea ice variations in the freezing season and by clouds in the melting season. A strong positive (negative) correlation is also found between the fall (summer) total sea ice area in the Arctic and the sea level pressure over the Beaufort High region. It is argued that as sea ice coverage is lost, static stability losses are severe in fall, resulting in enhanced evaporation, vertical motions, and weakening of the general large‐scale anticyclonic circulation of the Beaufort High.

URLhttp://dx.doi.org/10.1029/2019jc014979
DOI10.1029/2019jc014979
Journal: Journal of Geophysical Research: Oceans
Year of Publication: 2019
Volume: 124
Number: 12
Pages: 9572-9589
Publication Date: 12/2019

Using a perturbed parameter ensemble of a coupled climate model, emerging relationships are identified between sea ice area, net surface longwave radiation, and the atmospheric circulation over the Beaufort Gyre. There is a strong positive correlation between sea ice area and the net longwave radiation over the ocean‐ice surface during the melting season and a negative correlation during the freezing season. The mechanisms responsible for the longwave radiation balance at the surface are mainly driven by sea ice variations in the freezing season and by clouds in the melting season. A strong positive (negative) correlation is also found between the fall (summer) total sea ice area in the Arctic and the sea level pressure over the Beaufort High region. It is argued that as sea ice coverage is lost, static stability losses are severe in fall, resulting in enhanced evaporation, vertical motions, and weakening of the general large‐scale anticyclonic circulation of the Beaufort High.

DOI: 10.1029/2019jc014979
Citation:
Urrego-Blanco, J, E Hunke, and N Urban.  2019.  "Emergent Relationships Among Sea Ice, Longwave Radiation, and the Beaufort High Circulation Exposed Through Parameter Uncertainty Analysis."  Journal of Geophysical Research: Oceans 124(12): 9572-9589.  https://doi.org/10.1029/2019jc014979.