Thermodynamic and kinematic drivers of atmospheric boundary layer stability in the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)

Jozef, Gina C.; Cassano, John J.; Dahlke, Sandro; Dice, Mckenzie; Cox, Christopher J.; de Boer, Gijs

doi:10.5194/acp-23-13087-2023

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Thermodynamic and kinematic drivers of atmospheric boundary layer stability in the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)

2023
By Jozef, Gina C. ; Cassano, John J. ; Dahlke, Sandro ; ...
Source: Atmospheric Chemistry and Physics, 23(20), 13087-13106

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Journal Title:

Atmospheric Chemistry and Physics
Personal Author:

Jozef, Gina C. ; Cassano, John J. ; Dahlke, Sandro ; Dice, Mckenzie ; Cox, Christopher J. ; ... More +

Jozef, Gina C. ; Cassano, John J. ; Dahlke, Sandro ; Dice, Mckenzie ; Cox, Christopher J. ; de Boer, Gijs Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
Description:

Observations collected during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) provide a detailed description of the impact of thermodynamic and kinematic forcings on atmospheric boundary layer (ABL) stability in the central Arctic. This study reveals that the Arctic ABL is stable and near-neutral with similar frequencies, and strong stability is the most persistent of all stability regimes. MOSAiC radiosonde observations, in conjunction with observations from additional measurement platforms, including a 10 m meteorological tower, ceilometer, microwave radiometer, and radiation station, provide insight into the relationships between atmospheric stability and various atmospheric thermodynamic and kinematic forcings of ABL turbulence and how these relationships differ by season. We found that stronger stability largely occurs in low-wind (i.e., wind speeds are slow), low-radiation (i.e., surface radiative fluxes are minimal) environments; a very shallow mixed ABL forms in low-wind, high-radiation environments; weak stability occurs in high-wind, moderate-radiation environments; and a near-neutral ABL forms in high-wind, high-radiation environments. Surface pressure (a proxy for synoptic staging) partially explains the observed wind speeds for different stability regimes. Cloud frequency and atmospheric moisture contribute to the observed surface radiation budget. Unique to summer, stronger stability may also form when moist air is advected from over the warmer open ocean to over the colder sea ice surface, which decouples the colder near-surface atmosphere from the advected layer, and is identifiable through observations of fog and atmospheric moisture.
Keywords:

[+]

Atmospheric Science
Source:

Atmospheric Chemistry and Physics, 23(20), 13087-13106
DOI:

https://doi.org/10.5194/acp-23-13087-2023
ISSN:

1680-7324
Format:

PDF
Publisher:

Copernicus GmbH
Document Type:

Journal Article
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
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Submitted
Main Document Checksum:

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urn:sha256:909c411fbe66053e79a06cfa13a5950d8101ee69a1ee02e997cbbeb7426ecd8c
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https://repository.library.noaa.gov/view/noaa/56649/noaa_56649_DS1.pdf
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Thermodynamic and kinematic drivers of atmospheric boundary layer stability in the central Arctic during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC)

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