Bibliography

Assessing the performance of a Northeast Asia Japan-centered 3-D ionosphere specification technique during the 2015 St. Patrick’s day geomagnetic storm

This paper demonstrates and assesses the capability of the advanced three-dimensional (3-D) ionosphere tomography technique, during severe conditions. The study area is northeast Asia and quasi-Japan-centred. Reconstructions are based on total electron content data from a dense ground-based global navigation satellite system receiver network and parameters from operational ionosondes. We used observations from ionosondes, Swarm satellites and radio occultation (RO) to assess the 3-D picture. Specifically, we focus on St. Patrick’s day geomagnetic storm (17–19 March 2015), the most intense in solar cycle 24. During this event, the energy ingested into the ionosphere resulted in Dst and Kp and reaching values \textasciitilde − 223 nT and 8, respectively, and the region of interest, the East Asian sector, was characterized by a \textasciitilde 60\% reduction in electron densities. Results show that the reconstructed densities follow the physical dynamics previously discussed in earlier publications about storm events. Moreover, even when ionosonde data were not available, the technique could still provide a consistent picture of the ionosphere vertical structure. Furthermore, analyses show that there is a profound agreement between the RO profiles/in-situ densities and the reconstructions. Therefore, the technique is a potential candidate for applications that are sensitive to ionospheric corrections.

Nicholas, Ssessanga; Mamoru, Yamamoto; Susumu, Saito;

Published by: Earth, Planets and Space (Online)      Published on: dec

YEAR: 2021     DOI: 10.1186/s40623-021-01447-8

geomagnetic storm; Ground-GNSS-STEC tomography; Ionosonde data assimilation

Ionospheric-thermospheric UV tomography: 3. A multisensor technique for creating full-orbit reconstructions of atmospheric UV emission

We present the Volume Emission Rate Tomography (VERT) technique for inverting satellite-based, multisensor limb and nadir measurements of atmospheric ultraviolet emission to create whole-orbit reconstructions of atmospheric volume emission rate. The VERT approach is more general than previous ionospheric tomography methods because it can reconstruct the volume emission rate field irrespective of the particular excitation mechanisms (e.g., radiative recombination, photoelectron impact excitation, and energetic particle precipitation in auroras); physical models are then applied to interpret the airglow. The technique was developed and tested using data from the Special Sensor Ultraviolet Limb Imager and Special Sensor Ultraviolet Spectrographic Imager instruments aboard the Defense Meteorological Satellite Program F-18 spacecraft and planned for use with upcoming remote sensing missions. The technique incorporates several features to optimize the tomographic solutions, such as the use of a nonnegative algorithm (Richardson-Lucy, RL) that explicitly accounts for the Poisson statistics inherent in optical measurements, capability to include extinction effects due to resonant scattering and absorption of the photons from the lines of sight, a pseudodiffusion-based regularization scheme implemented between iterations of the RL code to produce smoother solutions, and the capability to estimate error bars on the solutions. Tests using simulated atmospheric emissions verify that the technique performs well in a variety of situations, including daytime, nighttime, and even in the challenging terminator regions. Lastly, we consider ionospheric nightglow and validate reconstructions of the nighttime electron density against Advanced Research Project Agency (ARPA) Long-range Tracking and Identification Radar (ALTAIR) incoherent scatter radar data.

Hei, Matthew; Budzien, Scott; Dymond, Kenneth; Nicholas, Andrew; Paxton, Larry; Schaefer, Robert; Groves, Keith;

Published by: Radio Science      Published on: 07/2017

YEAR: 2017     DOI: 10.1002/2015RS005887

Tomographic Imaging of Thermospheric Neutral Density Using UV Limb Scanning

Dymond, K; Budzien, SA; Nicholas, AC;

Published by:       Published on:

YEAR: 2013     DOI:

Heterogeneous Measurements for Advances in Space Science and Space Weather Forecasting

Examples of heterogenous data might include GPS radio occultation limb data and ultraviolet nadir photometry; GUVI/SSUSI cross-track O/N2 maps coupled with SSULI in-track

Budzien, Scott; Chua, Damien; Coker, Clayton; Dandenault, Patrick; Dymond, Kenneth; Nicholas, Andrew; Stephan, Andrew; Doe, Richard; Crowley, Geoff;

Published by: To emphasize that space weather forecasting with new, full-physics models requires heterogeneous datasets with complementary characteristics—not merely a higher volume of any single data type      Published on:

YEAR: 2012     DOI:

Evolved Tiny Ionospheric Photometer (ETIP): A sensor for ionospheric specification

Budzien, Scott; Chua, Damien; Coker, Clayton; Dandenault, Patrick; Dymond, Kenneth; Nicholas, Andrew; Doe, Richard; Crowley, Geoff;

Published by: To address the requirements for space weather sensors, and includes adequate flexibility for accommodation on a range of future flight opportunities, including microsatellite constellations      Published on:

YEAR: 2010     DOI:

The Armada mission: Determining the dynamic and spatial response of the thermosphere/ionosphere system to energy inputs on global and regional scales

Ridley, AJ; Forbes, JM; Cutler, J; Nicholas, AC; Thayer, JP; Fuller-Rowell, TJ; Matsuo, T; Bristow, WA; Conde, MG; Drob, DP; , others;

Published by:       Published on:

YEAR: 2010     DOI:

Continuous FUV/EUV Imaging of the Ionosphere from Geosynchronous Orbit

Wood, Kent; Dymond, KF; Budzien, SA; McDonald, SE; Coker, C; Nicholas, AC; Kowalski, MP;

Published by: To use new imaging systems to generate measurements in 2-dimensional formats continuously for large regions with high spatial resolution      Published on:

YEAR: 2009     DOI:

Ionospheric and dayglow responses to the radiative phase of the Bastille Day flare

Meier, RR; Warren, HP; Nicholas, AC; Bishop, J; Huba, JD; Drob, DP; Lean, JL; Picone, JM; Mariska, JT; Joyce, G; , others;

Published by: Geophysical research letters      Published on:

YEAR: 2002     DOI:

Variations in the FUV dayglow after intense auroral activity

Craven, JD; Nicholas, AC; Frank, LA; Strickland, DJ; Immel, TJ;

Published by: Geophysical research letters      Published on:

YEAR: 1994     DOI: