selected publications
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conference proceeding
- Middle-Latitude Ionospheric Irregularities and Scintillation during Geomagnetic Storms. 1657-1663. 2016
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A case study comparing citizen science aurora data with global auroral boundaries derived from satellite imagery and empirical models.
Journal of Atmospheric and Solar: Terrestrial Physics.
274-282.
2016
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Customers and Requirements for Ionosphere Products and Services.
Geophysical Monograph.
299-307.
2011
- Comparing Estimates of the Mg II Index at Solar Minimum from 1961 through 1981 with the Observed Mg II Index from 1978 to Present. 315-+. 2009
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Report on GOES SXI/XRS calibration effort - art. no. 66890J.
Proceedings of SPIE.
J6890-J6890.
2007
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Solar extreme ultraviolet irradiance observations from GOES: Design characteristics and initial performance.
Proceedings of SPIE.
2007
- Solar cycle effects on thermospheric density and satellite drag. Advances in the Astronautical Sciences. 1193-1208. 1999
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journal article
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The GOES-R EUVS model for EUV irradiance variability.
Journal of Space Weather and Space Climate.
2019
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An Improved Lyman-Alpha Composite.
Earth and Space Science.
2263-2272.
2019
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A Revised Magnesium II Core-to-Wing Ratio From SORCE SOLSTICE.
Earth and Space Science.
2106-2114.
2019
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Quantifying the Sources of Ionosphere Day-To-Day Variability.
Journal of Geophysical Research: Space Physics.
9682-9696.
2018
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Solar Ultraviolet Irradiance Observations of the Solar Flares During the intense September 2017 Storm Period.
Space Weather.
1470-1487.
2018
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The Reported Durations of GOES Soft X-Ray Flares in Different Solar Cycles.
Space Weather.
660-666.
2018
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New Solar Irradiance Measurements from the Miniature X-Ray Solar Spectrometer Cubesat.
The Astrophysical Journal: an international review of astronomy and astronomical physics.
2017
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Using citizen science reports to define the equatorial extent of auroral visibility.
Space Weather.
198-209.
2016
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Solar Spectral Proxy Irradiance from GOES (SSPRING): a model for solar EUV irradiance.
Journal of Space Weather and Space Climate.
2016
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Comparison of Magnesium II core-to-wing ratio observations during solar minimum 23/24.
Journal of Space Weather and Space Climate.
2014
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Identification and replacement of proton-contaminated real-time ACE solar wind measurements.
Space Weather.
434-440.
2013
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Evaluation of OVATION Prime as a forecast model for visible aurorae.
Space Weather.
2012
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Extreme Ultraviolet Variability Experiment (EVE) on the Solar Dynamics Observatory (SDO): Overview of Science Objectives, Instrument Design, Data Products, and Model Developments.
Solar Physics: a journal for solar and solar-stellar research and the study of solar terrestrial physics.
115-143.
2012
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Some Characteristics of the Ionospheric Behavior During the Solar Cycle 23-24 Minimum.
Solar Physics: a journal for solar and solar-stellar research and the study of solar terrestrial physics.
439-456.
2011
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Did the January 2009 sudden stratospheric warming cool or warm the thermosphere?.
Geophysical Research Letters.
2011
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Causes of low thermospheric density during the 2007-2009 solar minimum.
Journal of Geophysical Research: Space Physics.
2011
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Early Observations by the GOES-13 Solar Extreme Ultraviolet Sensor (EUVS).
Solar Physics: a journal for solar and solar-stellar research and the study of solar terrestrial physics.
71-115.
2010
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A new method for studying the thermospheric density variability derived from CHAMP/STAR accelerometer data for magnetically active conditions.
Annales Geophysicae: atmospheres, hydrospheres and space sciences.
1949-1958.
2007
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The October 28, 2003 extreme EUV solar flare and resultant extreme ionospheric effects: Comparison to other Halloween events and the Bastille Day event.
Geophysical Research Letters.
2005
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A composite Mg II index spanning from 1978 to 2003.
Space Weather.
2004
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Calibration of an extreme-ultraviolet transmission grating spectrometer with synchrotron radiation.
Applied Optics.
1623-1630.
2001
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The MgII Index: A proxy for solar EUV.
Geophysical Research Letters.
1343-1346.
2001
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The SOLAR2000 empirical solar irradiance model and forecast tool.
Journal of Atmospheric and Solar: Terrestrial Physics.
1233-1250.
2000
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The GOES-R EUVS model for EUV irradiance variability.
Journal of Space Weather and Space Climate.
2019