scholarly journals GRAPE, Solar Terrestrial Physics in an operational environment

2013 ◽  
Vol 56 (2) ◽  
Author(s):  
Giorgiana De Franceschi ◽  
Maurizio Candidi
Keyword(s):  
Space Environment ◽  
Ionospheric Scintillation ◽  
Polar Regions ◽  
Special Issue ◽  
Operational Environment ◽  
Data Infrastructure ◽  
Earth Space ◽  
Near Earth Space ◽  
Starting Point ◽  
Space Data

<p>[…] The collection of papers that forms this special issue represents the whole amplitude of research that is being conducted in the framework of GRAPE, while also connecting to other initiatives that address the same objectives in regions outside the polar regions, and worldwide, such as the Training Research and Applications Network to Support the Mitigation of Ionospheric Threats (TRANSMIT; www.transmitionosphere.net), a Seventh Framework Programme (FP7) Marie Curie Initial Training Network that is focused on the study of ionospheric phenomena and their effects on systems embedded in our daily life, Near-Earth Space Data Infrastructure for e-Science (ESPAS), an FP7-funded project that aims to provide the e-Infrastructure necessary to support the access to observations, for the modeling and prediction of the near-Earth Space environment, Concept for Ionospheric Scintillation Mitigation for Professional GNSS in Latin America (CIGALA) and its follow-up and extension Countering GNSS High-Accuracy Applications Limitations due to Ionospheric Disturbances in Brazil (CALIBRA), both of which are funded by the European Commission in the frame of FP7, for facing the equatorial ionosphere and its impact on GNSS. The main objective of the present Special Issue of Annals of Geophysics is to collect recent reports on work performed in the polar regions and on the datasets collected in time by the instrumentation deployed across various countries. This collection will set the starting point for further research in the field, especially in the perspective of the new and very advanced space system that will be available in the next few years. […]</p>

Imaging the near-Earth space environment

SPIE Newsroom ◽  
2016 ◽  
Author(s):  
Larry J. Paxton ◽  
John E. Hicks
Keyword(s):  
Space Environment ◽  
Earth Space ◽  
Near Earth Space

Mercury's Na exosphere as seen with very high spectral resolution from the ground, and from space with MESSENGER

2020 ◽  
Author(s):  
Nelly Mouawad ◽  
Judy Chebly ◽  
François Leblanc ◽  
Jonathan Fraine ◽  
Kahil Fatima
Keyword(s):  
Spectral Resolution ◽  
Doppler Shift ◽  
Space Environment ◽  
High Spectral Resolution ◽  
Polar Regions ◽  
University Of Texas ◽  
Intensity Measurements ◽  
Trajectory Approach ◽  
Space Data ◽  
Very High

&lt;p&gt;The MErcury Surface, Space ENvironment, GEochemistry, and Ranging NASA&amp;#8217;s spacecraft, known as MESSENGER, flew by Mercury on September 29, 2009. It was the spacecraft&amp;#8217;s third and final flyby, before it went into orbit around the planet. The flyby presented a unique trajectory approach and perspective on the planet&amp;#8217;s exosphere, not available when in orbit. We present very high spectral resolution ground-based data obtained at the&amp;#160;University of Texas&amp;#160;McDonald 2.7-m telescope. These data were acquired within hours of the data taken with the Ultraviolet and Visible Spectrometer (UVVS) onboard MESSENGER. Both datasets targeted similar spatial regions, in the polar altitudes of Mercury. We compare the sodium emissions from both measurements in the exosphere. We find that close to the surface, both intensity measurements match, but the intensities fall off differently with altitude, with the MESSENGER data showing an exponential drop off, sharper than that of the ground-based data; an effect that we attribute to atmospheric seeing. In addition, our ground-based data provided Full Width Half Maximum (fwhm) speeds and Doppler shift speeds; our results suggest energetic processes took place in the polar regions on the dusk side of the planet, but arguably on the dawn side as well. We confirm previous conclusions of Leblanc et al. (2008, 2009) where signatures of energetic processes seem to be coupled with high fwhm speeds and intensity peaks. We compare our Doppler shift velocities with previous works, and find agreement within the uncertainties with Potter et al., (2013) on their transit velocity measurements. Although our peak emissions along the terminator vary in structure and in brightness, they do not exhibit distinctive signatures in the intensity profiles at altitudes above the poles, when compared with convolved MESSENGER space data.&lt;/p&gt;

scholarly journals Specification of the near-Earth space environment with SHIELDS

2018 ◽  
Vol 177 ◽  
pp. 148-159 ◽  
Author(s):  
V.K. Jordanova ◽  
G.L. Delzanno ◽  
M.G. Henderson ◽  
H.C. Godinez ◽  
C.A. Jeffery ◽  
...  
Keyword(s):  
Space Environment ◽  
Earth Space ◽  
Near Earth Space
Sign in / Sign up

Export Citation Format

Share Document