Turbulent Heat Fluxes over Arctic Sea Ice: Measurements and Evaluation of Recent Parameterizations
Year: 2024
Type: article
Abstract: We present direct eddy covariance measurements of the surface heat flux in sea ice over a wide range of conditions across the Arctic Ocean made during two research cruises. Photographic imagery of the surface around the ship provides a local, in situ estimate of the ice fraction. Aerodynamically rough conditions prevail for the majority of the time in the consolidated pack ice. The results are analyzed in the framework of a recently-developed parameterization scheme in which the exchange coefficients over ice are functions of a roughness Reynolds number, R*, hence account for aerodynamic roughness variability. This parameterization accurately represents the measured fluxes under all conditions, while under aerodynamically rough conditions the existing parameterizations from both the Met Office Unified Model, and ECMWF Integrated Forecast System overestimate the fluxes. The results corroborate those of a previous airborne study over the marginal ice zone, and encompass a wider range of atmospheric stability conditions.
Source: Boundary-Layer Meteorology
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: hybrid
Estimated APC paid: $3,590
Awards: G1230140592, G1379617350, G2141841917, G5700176411, G595055593, Characterising and Interpreting FLuxes Over Sea-ice (CANDIFLOS), Ocean Regulation of Climate by Heat and Carbon Sequestration and Transports (ORCHESTRA), Characterising and Interpreting FLuxes Over Sea-ice (CANDIFLOS), G7453161680, Arctic Cloud Surface Response Experiment, G768508099, G8078206846, G8197998778, ENCORE is the National Capability ORCHESTRA Extension (ENCORE), G906855578, G918884254
OpenAlex ID: W4403484813