AFRL	Air Force Research Lab at Hanscom Air Force Base, Massachusetts
ASC	all sky camera
ASI	all sky imager
BU	Boston University
CEDAR	Coupling, Energetics, and Dynamics of Atmospheric Regions
Digisonde	digitally integrating goniometric ionosonde
FPI	Fabry-Perot Interferometer
GPS	Global Positioning System
ISR	Incoherent Scatter Radar
JRO	Jicamarca Radio Observatory
MISETA	multi-instrumented studies of equatorial aeronomy
MTM	midnight temperature maximum
NSF	National Science Foundation
S4	scintillation index
SRS	spaced receiver system
Te	electron temperature
TEC	total electron content
Ti	ion temperature
TIEGCM	thermosphere/ionosphere/electrodynamics general circulation model
Tn	neutral temperature
Ux	neutral zonal wind (east-west, positive to east)
Uy	neutral meridional wind (north-south, positive to north)
Vx	zonal ion drift (east-west)
Vy	meridional ion drift (north-south)
Vz	vertical ion drift