B Acronyms and Abbreviations


ACE

Advanced Composition Explorer

ACR

anomalous cosmic ray

AFOSR

Air Force Office of Scientific Research

AIM

atmosphere-ionosphere-magnetosphere

AMISR

Advanced Modular Incoherent Scatter Radar

ATST

Advanced Technology Solar Telescope

AU

astronomical unit (~150,000,000 km)

AURA

Associated Universities for Research in Astronomy


CEDAR

Coupling, Energetics, and Dynamics of Atmospheric Regions

CIR

corotating interaction region

CME

coronal mass ejection

COTS

commercial off-the-shelf


DOD

Department of Defense


EHR

Directorate of Education and Human Resources (NSF)

ESA

European Space Agency

EUV

extreme ultraviolet

eV

electron volt


FASR

Frequency-Agile Solar Radiotelescope

FAST

Fast Auroral Snapshot Explorer


GCR

galactic cosmic ray

GEC

Geospace Electrodynamic Connections

GEM

Geospace Environment Modeling

GEO

Directorate of Geosciences (NSF)



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B Acronyms and Abbreviations ACE Advanced Composition Explorer ACR anomalous cosmic ray AFOSR Air Force Office of Scientific Research AIM atmosphere-ionosphere-magnetosphere AMISR Advanced Modular Incoherent Scatter Radar ATST Advanced Technology Solar Telescope AU astronomical unit (~150,000,000 km) AURA Associated Universities for Research in Astronomy CEDAR Coupling, Energetics, and Dynamics of Atmospheric Regions CIR corotating interaction region CME coronal mass ejection COTS commercial off-the-shelf DOD Department of Defense EHR Directorate of Education and Human Resources (NSF) ESA European Space Agency EUV extreme ultraviolet eV electron volt FASR Frequency-Agile Solar Radiotelescope FAST Fast Auroral Snapshot Explorer GCR galactic cosmic ray GEC Geospace Electrodynamic Connections GEM Geospace Environment Modeling GEO Directorate of Geosciences (NSF)

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GOES Geostationary Operational Environmental Satellite GONG Global Oscillations Network Group GS Geospace IMAGE Imager for Magnetopause-to-Aurora Global Exploration IMF interplanetary magnetic field IMP-8 Interplanetary Monitoring Platform (8) ISAS Institute of Space and Astronautical Science (Japan) ISM interstellar medium; also, Interstellar Sampler Mission ISP In-Space Propulsion ITAR International Traffic in Arms Regulations JPM Jupiter Polar Mission L1 Lagrangian point 1 lidar light detection and ranging LISM local interstellar medium LWS Living With a Star (NASA) MagCon Magnetospheric Constellation MDI Michelson Doppler Imager MEMS microelectromechanical systems MESSENGERMercury Surface, Space Environment, Geochemistry, and Ranging MHD magnetohydrodynamic MHM Multispacecraft Heliospheric Mission MIDEX Medium-Class Explorer MMS Magnetospheric Multiscale MO&DA mission operations and data analysis MRX Magnetic Reconnection Experiment NASA National Aeronautics and Space Administration NOAA National Oceanic and Atmospheric Administration NRA NASA research announcement NRC National Research Council NSF National Science Foundation NSO National Solar Observatory NSWP National Space Weather Program

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ONR Office of Naval Research OSS Office of Space Science (NASA) PI principal investigator PIDDP Planetary Instrument Definition and Development Program PSBL plasma sheet boundary layer PVO Pioneer Venus Orbiter RAO Relocatable Atmospheric Observatory RTG radioisotope thermoelectric generator SAMPEX Solar Anomalous and Magnetospheric Particle Explorer SDO Solar Dynamics Observatory SEC Sun-Earth Connection program SEP solar energetic particle SHINE Solar, Heliospheric, and Interplanetary Environment SMEX Small Explorer SMI Stereo Magnetospheric Imager SO Solar Orbiter SOFIA Stratospheric Observatory for Infrared Astronomy SOHO Solar and Heliospheric Observatory SR&T Supporting Research and Technology SSX Swarthmore Spheromak Experiment STEP Solar-Terrestrial Energy Program STEREO Solar Terrestrial Relations Observatory STP Solar Terrestrial Probes (NASA) SWS Solar Wind Sentinels SXI Solar X-ray Imager TEC total electron content TIMED Thermosphere Ionosphere Mesosphere Energetics and Dynamics TRACE Transition Region and Coronal Explorer TWINS Two Wide-Angle Imaging Neutral-Atom Spectrometers UA Upper Atmosphere base program UNEXUniversity-Class Explorer UV ultraviolet