Helen E. Coffey

Geomagnetic and Solar Data

Helen E. Coffey · Journal of Geophysical Research Atmospheres · 1996 · 245 citations

Geophysics, Solar Variability, Engineering +7

Panel achieves consensus prediction of solar cycle 23

Jo Ann Joselyn, Jeffrey Anderson, Helen E. Coffey et al. · Eos · 1997 · 104 citations · Full text

Engineering, Solar Convection, Earth System Science +21

The Greenwich Photo-heliographic Results (1874 – 1976): Summary of the Observations, Applications, Datasets, Definitions and Errors

D. M. Willis, Helen E. Coffey, R. Henwood et al. · Solar Physics · 2013 · 85 citations

Astronomical Coordinate System, Photometry, Engineering +5

Comparison of sunspot area data bases

T. Baranyi, L. Győri, A. Ludmány et al. · Monthly Notices of the Royal Astronomical Society · 2001 · 59 citations · Full text

Sunspot Area Measurements, Solar Variability, Engineering +10

Solar-geophysical data: Prompt reports

Helen E. Coffey · Solar Geophysical Data Reports · 1978 · 50 citations

Geophysics, Solar Variability, Engineering +4