1.2k citations · 2.1k across the 22 of their papers we have counts for
23 papers
The Advective Flux Transport Model: Improving the Far-Side with Active Regions observed by STEREO 304Å
Lisa A. Upton, Ignacio Ugarte-Urra, Harry P. Warren +1
Observations the Sun's photospheric magnetic field are often confined to the Sun-Earth line. Surface flux transport (SFT) models, such as the Advective Flux Transport (AFT) model,…
Solar Cycle Precursors and the Outlook for Cycle 25
Lisa A. Upton, David H. Hathaway
Sunspot Cycle 25 over 3 years past the cycle minimum of December 2019. At this point, curve-fitting becomes reliable and consistently indicates a maximum sunspot number of 135+/-10…
Variations in Differential Rotation and Meridional Flow within the Sun's Surface Shear Layer 1996-2022
David H. Hathaway, Lisa A. Upton, Sushant S. Mahajan
We measure differential rotation and meridional flow in the Sun's surface shear layer by tracking the motions of the magnetic network seen in magnetograms from SOHO/MDI and SDO/HMI…
Improved Measurements of the Sun's Meridional Flow and Torsional Oscillation from Correlation tracking on MDI \& HMI magnetograms
Sushant S. Mahajan, David H. Hathaway, Andrés Muñoz-Jaramillo +1
The Sun's axisymmetric flows, differential rotation and meridional flow, govern the dynamics of the solar magnetic cycle and variety of methods are used to measure these flows, eac…
Calibration of the Sunspot and Group Numbers Using the Waldmeier Effect
Leif Svalgaard, David H. Hathaway
The Waldmeier Effect is the observation that the rise time of a sunspot cycle varies inversely with the cycle amplitude: strong cycles rise to their maximum faster than weak cycles…
Hydrodynamic Properties of the Sun's Giant Cellular Flows
David H. Hathaway, Lisa A. Upton
Measurements of the large cellular flows on the Sun were made by local correlation tracking of supergranules seen in full-disk Doppler images obtained by the HMI instrument on the…