Monthly Archives: July 2025

215. Quantifying Suppression of Solar Surface Magnetic Flux Advection with Increasing Field Strength

Contributed by V. Aparna. Posted on July 30, 2025

It is widely known that magnetic fields suppress convection, but this effect has not been quantitatively assessed. Using vector magnetograms from HMI observations, the authors measured the advection speeds of magnetic flux as a function of field strength and found that the speeds steadily decrease with increasing field strength.

214. Characterizing the Observational Properties of the Sun’s High-latitude m=1 Inertial Mode

Contributed by Boyang Ding. Posted on July 25, 2025

High-latitude m=1 inertial modes were analyzed and characterized using the time-distance helioseismic subsurface flows. It was found that the mode’s power exhibits an anti-correlation with solar activity. Magnetic flux transported from low to high latitudes influences both the mode’s power and lifetime, enhancing its power and shortening its lifetime upon arrival.