Bibliography

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Found 29 entries in the Bibliography.

Showing entries from 1 through 29

2017

The Global-Scale Observations of the Limb and Disk (GOLD) Mission

The Earth\textquoterights thermosphere and ionosphere constitute a dynamic system that varies daily in response to energy inputs from above and from below. This system can exhibit a significant response within an hour to changes in those inputs, as plasma and fluid processes compete to control its temperature, composition, and structure. Within this system, short wavelength solar radiation and charged particles from the magnetosphere deposit energy, and waves propagating from the lower atmosphere dissipate. Understanding the global-scale response of the thermosphere-ionosphere (T-I) system to these drivers is essential to advancing our physical understanding of coupling between the space environment and the Earth\textquoterights atmosphere. Previous missions have successfully determined how the \textquotedblleftclimate\textquotedblright of the T-I system responds. The Global-scale Observations of the Limb and Disk (GOLD) mission will determine how the \textquotedblleftweather\textquotedblright of the T-I responds, taking the next step in understanding the coupling between the space environment and the Earth\textquoterights atmosphere. Operating in geostationary orbit, the GOLD imaging spectrograph will measure the Earth\textquoterights emissions from 132 to 162 nm. These measurements will be used image two critical variables\textemdashthermospheric temperature and composition, near 160 km\textemdashon the dayside disk at half-hour time scales. At night they will be used to image the evolution of the low latitude ionosphere in the same regions that were observed earlier during the day. Due to the geostationary orbit being used the mission observes the same hemisphere repeatedly, allowing the unambiguous separation of spatial and temporal variability over the Americas.

Eastes, R.; McClintock, W.; Burns, A.; Anderson, D.; Andersson, L.; Codrescu, M.; Correira, J.; Daniell, R.; England, S.; Evans, J.; Harvey, J.; Krywonos, A.; Lumpe, J.; Richmond, A.; Rusch, D.; Siegmund, O.; Solomon, S.; Strickland, D.; Woods, T.; Aksnes, A.; Budzien, S.; Dymond, K.; Eparvier, F.; Martinis, C.; Oberheide, J.;

Published by: Space Science Reviews Published on: 10/2017

YEAR: 2017 DOI: 10.1007/s11214-017-0392-2

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

2015

SSULI/SSUSI UV tomographic images of large-scale plasma structuring

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

Published by: Published on:

YEAR: 2015 DOI:

2013

Tomographic Imaging of Thermospheric Neutral Density Using UV Limb Scanning

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

Published by: Published on:

YEAR: 2013 DOI:

2012

Global observations of L band scintillation at solar minimum made by COSMIC

Dymond, Kenneth;

Published by: Radio Science Published on: Jan-08-2012

YEAR: 2012 DOI: 10.1029/2011RS004931

Global-scale Observations of the Limb and Disk (GOLD)

Eastes, R; McClintock, W; Aksnes, A; Anderson, D; Andersson, L; Burns, A; Budzien, S; Codrescu, M; Daniell, R; Dymond, K; , others;

Published by: AMC Published on:

YEAR: 2012 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:

2011

A study of the strong linear relationship between the equatorial ionization anomaly and the prereversal E \texttimes B drift velocity at solar minimum

McDonald, Sarah; Coker, Clayton; Dymond, Kenneth; Anderson, David; Araujo-Pradere, Eduardo;

Published by: Radio Science Published on: Jan-12-2011

YEAR: 2011 DOI: 10.1029/2011RS004702

A study of the strong linear relationship between the equatorial ionization anomaly and the prereversal EXB drift velocity at solar minimum

It is known that there exists a linear relationship between the maximum velocity of the prereversal enhancement (PRE) of the EXB drift and the strength of the equatorial ionization

McDonald, Sarah; Coker, Clayton; Dymond, Kenneth; Anderson, David; Araujo-Pradere, Eduardo;

Published by: Radio Science Published on:

YEAR: 2011 DOI: 10.1029/2011RS004702

2010

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:

Combined in-situ and top-side remote observations of evolution of plasma bubbles

Barjatya, A; Eastes, R; Dymond, K;

Published by: Published on:

YEAR: 2010 DOI:

2009

Observations of the Ionosphere Using the Tiny Ionospheric Photometer.

Coker, Clayton; Dymond, Kenneth; Budzien, Scott; Chua, Damien; Liu, Jann-Yenq; Anderson, David; Basu, Sunanda; Pedersen, Todd;

Published by: Terrestrial, Atmospheric \& Oceanic Sciences Published on:

YEAR: 2009 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:

Remote sensing of nighttime F region peak height and peak density using ultraviolet line ratios

We present a newly developed algorithm for simultaneously inferring the peak height and peak density of the O + ions in the nighttime ionosphere. The technique relies on the simultaneous observation of the emissions of atomic oxygen at 130.4 and 135.6 nm that are primarily produced by radiative recombination, a natural decay process of the ionosphere. The 135.6 nm emission has become the workhorse for sensing O + distribution from space from low-Earth platforms where it has been used to infer the peak electron density.

Dymond, KF;

Published by: Radio Science Published on:

YEAR: 2009 DOI: 10.1029/2008RS004091

Ionospheric Electron Density Concurrently Derived by TIP and GOX of FORMOSAT-3/COSMIC.

The tiny ion o spheric pho tom e ter (TIP) and GPS occultation ex per i ment (GOX) onboard FORMOSAT-3/COS MIC (F3/C) are em ployed to mea sure the OI 135.6 nm in ten si ties in

Hsu, Mei-Lan; Rajesh, Panthalingal; Liu, Jann-Yenq; Tsai, Lung-Chih; Tsai, Ho-Fang; Lin, Chien-Hung; Dymond, Kenneth; Coker, Clayton; Chua, Damien; Budzien, Scott; , others;

Published by: Terrestrial, Atmospheric \& Oceanic Sciences Published on:

YEAR: 2009 DOI: 10.3319/TAO.2008.04.24.02(F3C)

2008

Low Latitude Ionosphere Measurements by the Global-scale Observations of the Limb and Disk (GOLD) Mission

Eastes, RW; Anderson, DN; McClintock, WE; Aksnes, A; Andersson, L; Burns, AG; Budzien, SA; Codrescu, MV; Daniell, RE; Dymond, KF; , others;

Published by: Published on:

YEAR: 2008 DOI:

Hemispheric asymmetries in the longitudinal structure of the low-latitude nighttime ionosphere

McDonald, SE; Dymond, KF; Summers, ME;

Published by: Journal of Geophysical Research: Space Physics Published on:

YEAR: 2008 DOI:

2007

Global-scale Observations of the Limb and Disk (GOLD)-New Observing Capabilities for Space Weather Specification and Forecasting

Eastes, R; Codrescu, M; McClintock, W; Aksnes, A; Anderson, D; Andersson, L; Burns, A; Budzien, S; Daniell, R; Dymond, K; , others;

Published by: Published on:

YEAR: 2007 DOI:

Global Observations of the Limb and Disk (GOLD): Temperature Measurements

Rusch, D; Aksnes, A; Budzien, S; Eastes, R; Anderson, D; Andersson, L; Burns, A; Codrescu, M; Daniell, R; Dymond, K; , others;

Published by: Published on:

YEAR: 2007 DOI:

2006

Simultaneous inversion of total electron content and UV radiance data to produce F region electron densities

The High Resolution Airglow and Aurora Spectroscopy (HIRAAS) experiment was launched aboard ARGOS on 23 February 1999. The HIRAAS experiment operated from mid-May

Dymond, KF; McDonald, SE; Coker, C; Bernhardt, PA; Selcher, CA;

Published by: Radio science Published on:

YEAR: 2006 DOI: 10.1029/2005RS003363

First Observations of the Ionosphere using the Tiny Ionospheric Photometer

Coker, C; Dymond, KF; Budzien, SA; Chua, D; Liu, JY;

Published by: Published on:

YEAR: 2006 DOI:

Ionospheric Measurements from the Tiny Ionospheric Photometer

Coker, C; Dymond, KF; Budzien, SA; Chua, D;

Published by: Published on:

YEAR: 2006 DOI:

2005