Turbulence measurements during HALO-(AC)³ and AFLUX in the atmospheric boundary layer over the Arctic MIZ

We investigate the atmospheric boundary layer (ABL) structure over the marginal sea ice zone (MIZ) using AFLUX and HALO-(AC)³ measurements. We present vertical profiles of mean and turbulent ABL quantities obtained in springtime conditions during Arctic cold air outbreaks. However, the environmental...

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Bibliographic Details
Main Authors: Michaelis, Janosch, Lüpkes, Christof, Hartmann, Jörg, Vihma, Timo
Format: Conference Object
Language:unknown
Published: 2022
Subjects:
Arctic
Sea ice
Online Access:https://epic.awi.de/id/eprint/56703/
https://hdl.handle.net/10013/epic.0a39abcc-ab67-4a90-aae6-c5072d2a23e8
Description
Summary:We investigate the atmospheric boundary layer (ABL) structure over the marginal sea ice zone (MIZ) using AFLUX and HALO-(AC)³ measurements. We present vertical profiles of mean and turbulent ABL quantities obtained in springtime conditions during Arctic cold air outbreaks. However, the environmental conditions (clouds, sea ice) for the two cases strongly differed. Thus, we raised three questions: - How do clouds and sea ice fraction affect the vertical profiles of mean and turbulent quantities over both MIZ and open ocean? - How strong is the impact of an upper cloud layer in slightly convective conditions (AFLUX)? - Is the impact of only one cloud layer 'visible' in the turbulence structure over the open ocean in a strongly convective situation?

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