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T1646 2002-Jan-31 18:40:24
Technical Page
Proposal Type: Long-term
General Category: Terrestrial Aeronomy
Sub-Category: Radar
Observation Category: Exosphere
Total Time Requested: 240 Hours
Proposal Title: Coupling of the Neutral Thermosphere, Exosphere, and Topside Ionosphere
ABSTRACT:
The science objective is to illuminate the processes that govern the composition and dynamics of the coupled
thermosphere-exosphere-ionosphere system. One central objective is evaluate and quantify possible long-term study
global climate change by sampling of hydrogen abundance near 500 km, as has been done with consistent
calibration since 1983. A second objective is to charaterize the response of H and photelectrons to magnetic storms,
and to do so with the aditional support of instruments along a common meridian at Jicamarca Peru, and at the
CTIO, in Chile. A third objective is to prove an apparent correlation between charge-exchange induced H velocity
distribution perturbations and the abundance and ow of protons in the topside ionosphere. This scope of this
objective includes an assement of the escape ux mechanism budget as a function of solar cycle. Preliminary
evidence is that charge escape induced escape dominates when H+/O+ transition descends to near 500 km. The
nal objeective is to establish a low-error technique to measure exobase temperature and winds using IR helium
emissions.
Name Institution E-mail Phone Student
Robert B. Kerr Scientic Solutions
Inc.
kerr@sci-sol.com 978-251-4554 no
Service Observing Request Remot e Observing Request
X None X No
All of the observing run. Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
430 G 430 CH receiver 430 CH radar
Atmospheric Observation Instruments:
Tilt-Photometer Fabry-Perot Ionosonde
Description of Observer Equipment: One Infrared Fabry-Perot interferometer One two-channel
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Photometer positioned at CTIO, Chile
Special Equipment or setup: I request use of two photometers, and two Fabry-Perots. I also request
a mirror system for pointing above the infrared Fabry-Perot interferometer.
RFI Considerations
Frequency Ranges Planned
430 MHz
This proposal requires coordination with AFTWF within the band 425-435 MHz.
2