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NOAA / POESPolar Operational Environmental Satellites
RBSP SWG 05.24.2011
SEM-2 & MEPED• Space Environmental Monitor
– TED (0.05 - 20 keV [e-, p+])– MEPED Instruments
• Telescopes (orthogonal pairs)– protons 30 - 6900+ keV– electrons 30 - 1100+ keV*
• Omnidirectional Sensors (4)– protons 16 - 275 MeV
• Continuous Measurements since 1978– SEM-1: TIROS-N through NOAA-14– SEM-2: since NOAA-15
(2017)METOP-C(2012)METOP-B
2007 -- PRESMETOP-A2009 -- PRESNOAA-192005 -- PRESNOAA-182002 -- PRESNOAA-172001 -- PRESNOAA-161998 -- PRESNOAA-15
OperationalSatellite
(*extended range possible)RBSP SWG 05.24.2011 Yando & Millan
Relativistic Electron Detection
Compare with SAMPEX:
LESSON: proton channel “P6” reliably detects MeV e-!!RBSP SWG 05.24.2011 Yando & Millan
(SAMPEX adapted from Baker 2004)
Extending Instr. CapabilitiesNominal electron channels
E1 >30 keVE2 >100 keV + P6 >1000 keV [e-]E3 >300 keV
Detector response quantified w/ Geant4 modeling:
!
"
# $
% $
“new” e- channel
Yando et al. JGR [in review]RBSP SWG 05.24.2011 Yando & Millan
Mapping REP with POES• Sun-synchronous polar orbits
– Altitude ~850 km– Inclination ~99o
– Orbital Period ~102 minutes(i.e., 14.1 orbits / day)
• Presently 6 POES / METOPspacecraft in low Earth orbit– 2 additional METOP spacecraft
expected (1 during RBSP)
LOTS OF CONJUNCTIONSproof of concept:
Jan 2000 REP event observed by MAXISballoon [Millan 2007] simultaneously observedin NOAA-15 data [Millan 2010]
others recently identified (Scheiman thesis)RBSP SWG 05.24.2011
POES and RBSP: Summary6(+) satellites / LEO / measure 0o & 90o [p+,e-] fluxesData Availability:
- ASCII/CDF http://poes.ngdc.noaa.gov/data/- ViRBO http://virbo.org/POES (web interface)
Yando & Millan
Acknowledgements
RBSP SWG 05.24.2011 Yando & Millan
• Janet Green, NOAA NGDC• David Evans, retired NOAA • Fred Hanser, Assurance Tech
Proton Telescope GF
RBSP SWG 05.24.2011 Yando & Millan
Electron Telescope GF
RBSP SWG 05.24.2011 Yando & Millan