Earth  Sun  ID: 4527

ICON and GOLD: Instrument Scanning Coverage

A basic view of the orbits for ICON (Ionospheric Connections Explorer) and GOLD (Global-scale Observations of the Limb and Disk). These missions will conduct measurements of ionospheric composition, ionization, and winds to better understand the connection between space weather and its terrestrial impacts.

In this visualization, we present GOLD (in geostationary orbit around Earth) and ICON (in low Earth orbit). The colors over Earth represent model data from the IRI (International Reference Ionosphere) model of the density of the singly-ionized oxygen atom at an altitude of 350 kilometers. Red represents high density. The ion density is enhanced above and below the geomagnetic equator (not perfectly aligned with the geographic equator) on the dayside due to the ionizing effects of solar ultraviolet radiation combined with the effects of high-altitude winds and the geomagnetic field.

In the latter half of the visualization, the viewing fields of the various instruments are displayed. ICON has an EUV (Extreme Ultraviolet) and FUV (Far Ultraviolet) cameras (violet colored frustrums directed from spacecraft) pointing perpendicular to the orbit direction for detecting ionospheric emissions. Two Doppler interferometer cameras (blue) are directed at 45 degrees from this camera to detect ionospheric wind velocities.

GOLD has an imaging spectrometer (green) that periodically scans the disk of Earth with additional higher-resolution scans of the dayside limb.
 

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Visualization Credits

Tom Bridgman (GST): Lead Visualizer
Jeff Klenzing: Lead Scientist
Sarah L. Jones (NASA/GSFC): Scientist
Scott England (Space Sciences Laboratory, UC Berkeley): Scientist
Sarah Frazier (ADNET Systems Inc.): Writer
Genna Duberstein (USRA): Lead Producer
Laurence Schuler (ADNET Systems Inc.): Technical Support
Ian Jones (ADNET Systems Inc.): Technical Support
Please give credit for this item to:
NASA's Scientific Visualization Studio

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http://svs.gsfc.nasa.gov/4527

Data Used:
Horizontal Wind Model
International Geomagnetic Reference Field
International Reference Ionosphere
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:
Interface to Space

Keywords:
GCMD >> Earth Science >> Sun-earth Interactions >> Ionosphere/Magnetosphere Particles
GCMD >> Location >> Ionosphere
SVS >> Hyperwall
NASA Science >> Earth
NASA Science >> Sun
GCMD >> Earth Science >> Sun-earth Interactions >> Ionosphere/magnetosphere Dynamics

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0