selected publications

• chapter

  • Interpolating Geomagnetic Observations: Techniques and Comparisons.  Geophysical Monograph. 15-41. 2019

• conference proceeding

  • Next-Day Prediction of Sunspots Area and McIntosh Classifications using Hidden Markov Models.  253-+. 2009
  • The GOES solar X-ray imager: Overview and operational goals.  Proceedings of SPIE. 309-319. 1996

• journal article

  • Characterizing Auroral-Zone Absorption Based on Global Kp and Regional Geomagnetic Hourly Range Indices.  Space Weather. 2020
  • A Gray-Box Model for a Probabilistic Estimate of Regional Ground Magnetic Perturbations: Enhancing the NOAA Operational Geospace Model With Machine Learning.  Journal of Geophysical Research: Space Physics. 2020
  • Comparison Between 1-D and 3-D Geoelectric Field Methods to Calculate Geomagnetically Induced Currents: A Case Study.  IEEE Transactions on Power Delivery. 2163-2172. 2019
  • Geomagnetically induced currents: Science, engineering, and applications readiness.  Space Weather. 828-856. 2017
  • Methodology for time-domain estimation of storm time geoelectric fields using the 3-D magnetotelluric response tensors.  Space Weather. 874-894. 2017
  • A COMPARISON OF FLARE FORECASTING METHODS. I. RESULTS FROM THE "ALL-CLEAR" WORKSHOP.  The Astrophysical Journal: an international review of astronomy and astronomical physics. 2016
  • Geoelectric hazard maps for the continental United States.  Geophysical Research Letters. 9415-9424. 2016
  • Community-wide validation of geospace model local K-index predictions to support model transition to operations.  Space Weather. 469-480. 2016
  • Solar Storm GIC Forecasting: Solar Shield Extension-Development of the End-User Forecasting System Requirements.  Space Weather. 531-532. 2015
  • Community-wide validation of geospace model ground magnetic field perturbation predictions to support model transition to operations.  Space Weather. 369-385. 2013
  • A technique for short-term warning of solar energetic particle events based on flare location, flare size, and evidence of particle escape.  Space Weather. 2009
  • Updated verification of the Space Weather Prediction Center's solar energetic particle prediction model.  Space Weather. 2008
  • The NOAA GOES-12 Solar X-ray Imager (SXI) 1. Instrument, operations, and data.  Solar Physics: a journal for solar and solar-stellar research and the study of solar terrestrial physics. 255-281. 2005
  • The NOAA GOES-12 Solar X-ray Imager (SXI) 2. Performance.  Solar Physics: a journal for solar and solar-stellar research and the study of solar terrestrial physics. 283-315. 2005
  • The monitoring and prediction of solar particle events--an experience report..  Advances in Space Research. 165-172. 1984