.png){kind=icon}
.png){kind=icon}
Return
Physical Phenology of Air-Sea Heat Budget for the Beaufort Sea Autumn Freeze-Up
.png){kind=icon}
PRE
AI
C
V
Y
DOI：10.1175/JCLI-D-24-0391.1.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
This study examines the summer-to-autumn air-sea heat budget of the Beaufort Sea using a combination of three reanalyses [fifth generation ECMWF atmospheric reanalysis (ERA5); Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2); and Climate Forecast System, version 2 (CFSv2)] and observations from a field campaign in the western Beaufort Sea [NASA Salinity and Stratification at the Sea Ice Edge (SASSIE) cruise, September 2022]. All four data sources indicate that the cumulative net air-sea heat flux reaches its minimum around the autumn equinox, marking the ocean's transition from net heat gain to loss in the study area. Our findings also show that the timing of this transition in air-sea turbulent heat flux depends on the temperature difference at the interface, while wind speed may remain relatively constant. Although it is expected to observe a dominance of the b effect (salinity driven) over the a effect (temperature driven) in surface water mass transformation at high latitudes, we identify two distinct buoyancy input scenarios in the upper ocean of the Beaufort Sea. The first scenario involves the development of near-surface atmospheric stability, where synoptic wind changes bring warm air and moisture from lower latitudes. The second scenario is driven by salinity heterogeneity in the ocean surface layer near the advancing sea ice, which facilitates transport by ocean currents. This highlights the need for the development of higher-resolution observations from fully coupled air-ocean-ice platforms in the marginal ice zone.
Keywords:
Arctic
Atmosphere-ocean interaction
Heat budgets/fluxes
Salinity
Journal
IF:
4
Papers:
1.4W
Citations:
5.9W
Organization
Cited Papers