E
Acronyms
ACE Advanced Composition Explorer
AFWA Air Force Weather Agency
ALARA as low as reasonably achievable
ATST Advanced Technology Solar Telescope
AU astronomical unit
CCD charge coupled device
CCMC Community Coordinated Modeling Center
CEDAR Coupling, Energetics, and Dynamics of Atmospheric Regions
CEV Crew Exploration Vehicle
CISM Center for Integrated Space Weather Modeling
CME coronal mass ejection
CPD crew passive dosimeter
CPDS charged particle directional spectrometer
CSSP Committee on Solar and Space Physics
DDREF dose and dose-rate effectiveness factor
DOD Department of Defense
ERR excess relative risk
EUV extreme ultraviolet
EV1 velocity vector
EV2 zenith direction
EV3 antivelocity vector
EVA extravehicular activity
EV-CPDS extra-vehicular charged particle directional spectrometer
FASR Frequency Agile Solar Radio (telescope array)
GCR galactic cosmic radiation
GEM Geospace Environment Modeling
GOES Geostationary Operational Environmental Satellite
HZE high Z energetic ion (Z > 2)
IMAGE Imager for Magnetopause-to-Aurora Global Exploration
IMF interplanetary magnetic field
ISS International Space Station
IV-CPDS intra-vehicular charged particle directional spectrometer
JSC Johnson Space Center
LEO low Earth orbit
LET Linear Energy Transfer
LWS Living With a Star
MARIE Mars Radiation Environment Experiment
MURI Multidisciplinary University Research Initiative
NASA National Aeronautics and Space Administration
NCRP National Council on Radiation Protection and Measurements
NOAA National Oceanic and Atmospheric Administration
NRC National Research Council
NSF National Science Foundation
RAM radiation area monitor
RHESSI Ramati High Energy Solar Spectrographic Imager
SAA South Atlantic Anomaly
SDO Solar Dynamics Observatory
SEC Space Environment Center
SEP solar energetic particle
SHINE Solar, Heliospheric, and Interplanetary Environment
SIREST Space Ionizing Radiation Environments and Shielding Tools
SOHO Solar and Heliospheric Observatory
SOLPENCO Solar Particle Engineering Code
SRAG Space Radiation Analysis Group
SSP solar and space physics
STEREO Solar Terrestrial Relations Observatory
TEPC tissue equivalent proportional counter
TIMED Thermosphere Ionosphere Mesosphere Energetics and Dynamics (mission)