the cosmic-2 mission: opportunities for heliophysics
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The COSMIC-2 Mission: Opportunities for Heliophysics. Contributors: Anthony Mannucci and Bruce Tsurutani Jet Propulsion Laboratory, California Institute of Technology Ying- Hwa (Bill) Kuo , William Schreiner University Corporation for Atmospheric Research. Meeting Agenda. Summary. - PowerPoint PPT PresentationTRANSCRIPT
Tony Mannucci & Bruce Tsurutani/JPL 1
The COSMIC-2 Mission:Opportunities for Heliophysics
Contributors:Anthony Mannucci and Bruce Tsurutani
Jet Propulsion Laboratory, California Institute of Technology
Ying-Hwa (Bill) Kuo, William SchreinerUniversity Corporation for Atmospheric Research
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 2
Meeting Agenda
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 3
Summary• COSMIC-2 mission is on track for launch in 2016 (USAF, NOAA,
Taiwan)• COSMIC-2 data will contribute to high priority science
objectives of the Decadal Survey– AIMI3: “Understand how forcing from the lower atmosphere via tidal,
planetary, and gravity waves, influences the ionosphere and thermosphere.”
• Aligned with DRIVE initiative and AIMI Imperative 2– “Provide a broad and robust range of space-based, suborbital, and
groundbased capabilities that enable frequent measurements of the AIM system from a variety of platforms, categories of cost, and levels of risk.”
• We suggest that NASA leverage COSMIC-2 to advance Heliophysics objectives
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 4
Outline
• The COSMIC-2/FORMOSAT-7 mission• The opportunity• Addressing Decadal Survey priorities• Discussion
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 5
Why COSMIC-2/FORMOSAT-7?
• COSMIC-1/FORMOSAT-3 and C/NOFS successfully demonstrated the value of radio occultation for meeting AF operational needs
• AF procures systems that meet measurement requirements (e.g. NPOESS “Key Performance Parameters”)
September 6, 2012
Excerpt of electron density parameters key performance parameters
Tony Mannucci & Bruce Tsurutani/JPL 6
COSMIC-2 Mission
• Six satellites, 24 degrees inclination, 520 km altitude
• Launch in 2016• Remote sensing (radio occultation) and in-situ
payloads measuring multiple plasma parameters and electric fields
• 100% duty cycle• 5-year mission life
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 7
COSMIC-2 Orbits
September 6, 2012
• 520 km altitude, circular orbit• Continuous in-situ data• Six satellites• NSPO (Taiwan) constellation trade
Tony Mannucci & Bruce Tsurutani/JPL 8
Radio Occultation Coverage
September 6, 2012
COSMIC-2/FORMOSAT-7 Occultations – 3 Hrs Coverage
Tony Mannucci & Bruce Tsurutani/JPL 9
COSMIC-2: Compelling Science For Heliophysics
“AIMI Science Priority 2: Understand how tropospheric weather influences space weather.”• C-2 simultaneously measures tropospheric and
stratospheric waves and ionospheric densities in the E- and F-region ionosphere
• C-2 continuously samples vertical ion drifts and irregularities near the F-region peak
• Potentially highest low-latitude sampling among the proposed Heliophysics missions
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 10September 6, 2012
The next 3 slides are taken from Toshitaka Tsuda’s Presentations on the EQUARS Satellite
Tony Mannucci & Bruce Tsurutani/JPL 11
Atmosphere-Ionosphere Coupling at Low Latitudes
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 12September 6, 2012
Comparison of a temperature profile between GPS/MET and a nearby radiosonde (Indonesia)
RMS Difference Upper Troposphere ~ 1 K Stratosphere ~ 2 K(Fluctuations due to Atmospheric Waves)
● Detailed temperature structure near the tropopause
(6.9S,107.6E)
⇒⇒
Tony Mannucci & Bruce Tsurutani/JPL 13September 6, 2012
Longitude Distribution of temperature variance, water vapor and surface topography at 5-25S on February 2-16, 1997
← Maximum of Ne perturbations in the MLT region (80-120 km)
← Temperature variance at 22-28 km (solid) and 32-38 km (dot)
← Water vapor pressure at 6 km from GPS/MET (solid) and ECMWF (dot)
← Mean height of surface topography at 5-25S
← Number of occultation events from GPS/MET
Good correlation between ΔNe, Ep and humidity is recognized.
South America Africa Indonesia
Tony Mannucci & Bruce Tsurutani/JPL 14
Potential of COSMIC-2 Science
• Preliminary data using radio occultation and other instruments clearly suggests evidence of meteorological control of the ionosphere
• COSMIC-2 should be further investigated as a major Heliophysics resource
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 15
COSMIC-2 Payloads• Radio occultation instrument based on NASA/JPL TriG
(primary payload)– Precise ionospheric TEC measurements– Electron density profile retrievals
• Space science payloads– Langmuir probe (electron density, fluctuations, temperature)*– Ion velocity meter (electric fields, ion composition, temperature
and density)*– Beacon transmitter (ionospheric irregularities, UHF and L-band
scintillations)
September 6, 2012
*DYNAMIC carries similar instruments
Tony Mannucci & Bruce Tsurutani/JPL 16
Radio Occultation Remote Sensing
Six-satellite COSMIC constellationLaunch April 2006
Low-Earth OrbiterGPS
3000 profiles/day
ElectronDensityProfile
COSMIC coverage
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 17
COSMIC-2 Measurements
September 6, 2012
The potential value of these measurements to Heliophysics science should be investigated
Tony Mannucci & Bruce Tsurutani/JPL 18
The COSMIC-2 Science Opportunity
• COSMIC-2 Level 1 requirements are derived from operational considerations– Measurement objectives well defined– Operational centers will be ready to receive the data
• The measurements have significant science value: COSMIC-2 can provide insights on a high priority Decadal science question, yet
• There is no COSMIC-2 infrastructure for science
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 19
Potential Way Forward• NASA responds to Decadal “DRIVE” initiative and AIMI
imperative– Diversify, small satellites, interagency cooperation
• NASA convene a “science definition team” to determine science questions that can be addressed by COSMIC-2
• If sufficiently compelling, develop an approach to deliver NASA quality science from COSMIC-2– Leverage existing measurement requirements– Form competitively selected science teams to deliver science data
and answer science questions– Guest investigator opportunities– Low cost, high impact
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 20
The Benefits of COSMIC-2 to Heliophysics
• COSMIC-2 science potential is highly relevant to Decadal priorities
• Expand the Heliophysics Observatory with six additional satellites
• Reduces risk and increases science return from DYNAMIC
September 6, 2012
Tony Mannucci & Bruce Tsurutani/JPL 21
Summary• COSMIC-2 mission is on track for launch in 2016 (USAF, NOAA,
Taiwan)• COSMIC-2 data will contribute to high priority science
objectives of the Decadal Survey– AIMI3: “Understand how forcing from the lower atmosphere via tidal,
planetary, and gravity waves, influences the ionosphere and thermosphere.”
• Aligned with DRIVE initiative and AIMI Imperative 2– “Provide a broad and robust range of space-based, suborbital, and
groundbased capabilities that enable frequent measurements of the AIM system from a variety of platforms, categories of cost, and levels of risk.”
• We suggest that NASA leverage COSMIC-2 to advance Heliophysics objectives
September 6, 2012