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Cited by 98Solar and Space Plasma DynamicsStellar, planetary, and galactic studiesFluid Dynamics and Turbulent Flows

The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.

HIGH-RESOLUTION CALCULATION OF THE SOLAR GLOBAL CONVECTION WITH THE REDUCED SPEED OF SOUND TECHNIQUE. II. NEAR SURFACE SHEAR LAYER WITH THE ROTATION

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Hotta, H., Rempel, M., Yokoyama, T.·2014·The Astrophysical Journal
DOI 10.1088/0004-637x/798/1/51
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Abstract

We present a high-resolution, highly stratified numerical simulation of rotating thermal convection in a spherical shell. Our aim is to study in detail the processes that can maintain a near surface shear layer (NSSL) as inferred from helioseismology. Using the reduced speed of sound technique, we can extend our global convection simulation to 0.99 R ☉ and include, near the top of our domain, small-scale convection with short timescales that is only weakly influenced by rotation. We find the formation of an NSSL preferentially in high latitudes in the depth range of r = 0.95–0.975 R ☉ . The maintenance mechanisms are summarized as follows. Convection under the weak influence of rotation leads to Reynolds stresses that transport angular momentum radially inward in all latitudes. This leads to the formation of a strong poleward-directed meridional flow and an NSSL, which is balanced in the meridional plane by forces resulting from the correlation of turbulent velocities. The origin of the required correlations depends to some degree on latitude. In high latitudes, a positive correlation is induced in the NSSL by the poleward meridional flow whose amplitude increases with the radius, while a negative correlation is generated by the Coriolis force in bulk of the convection zone. In low latitudes, a positive correlation results from rotationally aligned convection cells ("banana cells"). The force caused by these Reynolds stresses is in balance with the Coriolis force in the NSSL.

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Research works printed but not linked: 7

  1. Brandenburg, 1990, SoPh, 128, 243
  2. Howe, 2009, LRSP, 6, 1
  3. Howe, 2011, JPhCS, 271, 012061
  4. Kichatinov, 1993, A&A, 276, 96
  5. Kitchatinov, 1995, A&A, 299, 446
  6. Matt, 2011, AN, 332, 897
  7. Miesch, 2005, LRSP, 2, 1

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Metadata

Authors
Hotta, H., Rempel, M., & Yokoyama, T.
Affiliations
  • NSF National Center for Atmospheric Research (US)
  • The University of Tokyo (JP)
Corresponding author
Hotta, H.
ORCID
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2014-12-19
Volume
798
Issue
1
Pages
51
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1088/0004-637x/798/1/51
OpenAlex
W2024535794
Cited by
98
References
44
Citations by year
2026: 4 · 2025: 7 · 2024: 2 · 2023: 8 · 2022: 12 · 2021: 9 · 2020: 11 · 2019: 10 · 2018: 5 · 2017: 9 · 2016: 10 · 2015: 10 · 2014: 1
FWCI
5.39
Type
journal article
Language
en
Open access
Licence
Locations
  • The Astrophysical Journal (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
Japan Society for the Promotion of Science (23340042)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Solar and Space Plasma Dynamics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Engineering › Computational Mechanics › Fluid Dynamics and Turbulent Flows
Keywords
spherical shell, Reynolds stress, angular momentum transport, meridional flow, Coriolis force, helioseismology, solar convection zone

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