O


O2 (normal) molecular oxygen
O3 ozone
Ox odd oxygen (O+O3)
OClO chlorine dioxide
OCCM Ocean Carbon Cycle Model
OCTS Japanese Ocean Color Temperature Scanner
ODP Ozone Depletion Potential
OECD Organization for Economic Cooperation and Development (Paris)
OH hydroxyl radical
OLS Optical Line Scanner
ONR Office of Naval Research
OPS Optical Sensor
ORNL Oak Ridge National Laboratory
OSSA Office of Space Science and Applications (NASA HQ)
OST Office of Science and Technology
OSU Oregon State University

P

PAGES Past Global Changes
PBL
PCMDI Program for Climate Model Diagnosis and Intercomparison
PEM Particle Environment Monitor
PI Principal Investigator
PMC Pressure-Modulator Cell
PMIR Pressure Modulator Infrared Radiometer
PMR Pressure Modulator Radiometer
POEM Polar-Orbiting Earth Mission (ESA)
POEMS Positron Electron Magnetic Spectrometer
POES Polar-Orbiting Environmental Satellite
POGO Polar-Orbiting Geophysical Observatory
POLDER Polarization and Directionality of Reflectances
POLES Polar Exchange at the Sea Surface
ppb parts per billion
ppm parts per million
PPR Photopolarimeter Radiometer
ppt parts per trillion
PR Precipitation Radar
PRARE Precise Range and Rate Equipment
PRAREE Precise Range and Rate Equipment-Extended Version
PRF Pulse Repetition Frequency
PSC Polar Stratospheric Cloud
PV potential vorticity

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