J/A+A/581/A67ivo://CDS.VizieR/J/A+A/581/A67doi:10.26093/cds/vizier.35810067CDSLangfellner J.Gizon L.Birch A.C.2016-01-16T16:17:48Z2015-09-03T08:18:35ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frthe-sunFlow vorticity is a fundamental property of turbulent convection in rotating systems. Solar supergranules exhibit a preferred sense of rotation, which depends on the hemisphere. This is due to the Coriolis force acting on the diverging horizontal flows. We aim to spatially resolve the vertical flow vorticity of the average supergranule at different latitudes, both for outflow and inflow regions. To measure the vertical vorticity, we use two independent techniques: time-distance helioseismology (TD) and local correlation tracking of granules in intensity images (LCT) using data from the Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory (SDO). Both maps are corrected for center-to-limb systematic errors. We find that 8 h TD and LCT maps of vertical vorticity are highly correlated at large spatial scales.2015A&A...581A..67Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/581/A67CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/581/A67https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/581/A67http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/581/A67https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/581/A67https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/581/A67http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/581/A67GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/581/A67/outflowaverage supergranular outflows at different latitudesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLatOutflow solar latitude (+60 to -60{deg})degpos.frameintnullabler[0.34/48] horizontal distance from outflow/inflow centerMmphys.size.radiusdoublevr[-240/350] Radial velocity componentm/sphys.velocdoublee_vr[0.1/6.1] Error estimate of vrm/sstat.errordoublevt[-12/12] Tangential velocity componentm/sphys.veloc.transversedoublee_vt[0.04/0.8] Error estimate of vtm/sstat.errordoubleJ/A+A/581/A67/inflowaverage supergranular inflows at different latitudese_vr[0.1/6.1] Error estimate of vrm/sstat.errordoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLatInflow solar latitude (+60 to -60{deg})degpos.frameintnullabler[0.34/48] horizontal distance from outflow/inflow centerMmphys.size.radiusdoublevr[-240/350] Radial velocity componentm/sphys.velocdoublevt[-12/12] Tangential velocity componentm/sphys.veloc.transversedoublee_vt[0.04/0.8] Error estimate of vtm/sstat.errordouble