Meridional Motion and Reynolds Stress from Debrecen Photoheliographic Data

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F17%3A00480935" target="_blank" >RIV/67985815:_____/17:00480935 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s11207-017-1105-4" target="_blank" >http://dx.doi.org/10.1007/s11207-017-1105-4</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11207-017-1105-4" target="_blank" >10.1007/s11207-017-1105-4</a>

Result language

angličtina

Original language name

Meridional Motion and Reynolds Stress from Debrecen Photoheliographic Data

Original language description

he Debrecen Photoheliographic Data catalogue is a continuation of the Greenwich Photoheliographic Results providing daily positions of sunspots and sunspot groups. We analyse the data for sunspot groups focussing on meridional motions and transfer of angular momentum towards the solar equator. Velocities are calculated with a daily shift method including an automatic iterative process of removing the outliers. Apart from the standard differential rotation profile, we find meridional motion directed towards the zone of solar activity. The difference in measured meridional flow in comparison to Doppler measurements and some other tracer measurements is interpreted as a consequence of different flow patterns inside and outside of active regions. We also find a statistically significant dependence of meridional motion on rotation velocity residuals confirming the transfer of angular momentum towards the equator. Analysis of horizontal Reynolds stress reveals that the transfer of angular momentum is stronger with increasing latitude up to about 40 degrees, where there is a possible maximum in absolute value.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/7E13003" target="_blank" >7E13003: High-Resolution Solar Physics Network</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Solar Physics

ISSN

0038-0938

e-ISSN

—

Volume of the periodical

292

Issue of the periodical within the volume

7

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

"86/1"-"86/13"

UT code for WoS article

000406304300004

EID of the result in the Scopus database

2-s2.0-85021091545