Wind speed

The resulting latitudinal distributions of the wind speed are shown in a polar (left) and cartesian (right) plots. The subroutine works with the latest available LASCO images in quasi real-time, providing a measurement of the actual wind speed on the plane of the sky daily.

The velocities measured with the cross-correlation algo are superposed for comparison over a solar wind speed map derived with another method. The color maps show in particular the velocities as derived from the density map obtained from LASCO/C2 and converted in a velocity map with the fitting relationship derived by Bemporad (2017) and based on the analysis of data acquired by the LASCO/C2 coronagraph and the UVCS coronagraph spectrometer both onboard SOHO. This method is thus totally independent with the above cross-correlation algo. "

Article of this work by A. Bemporad: https://ui.adsabs.harvard.edu/abs/2017ApJ...846...86B/abstract