1. MJ Mahoney PI, Microwave Temperature Profiler (MTP) Jet Propulsion Laboratory California Institute of Technology Pasadena, California, USA URL: http://mtp.jpl.nasa.gov Email:Michael.J.Mahoney@jpl.nasa.gov

2. MTP The MTP is located on right engine intake of the M55 Geophysica It is the first US instrument to fly on the Geophysica Since the late 1980s, MTPs have flown >550 flights (>3300 hours) I acknowledge Dr. Mike Kurylo of the NASA UARP for support

3. Theory of MTP Observations

8. 1) UCSE, Unit for Connection with Scientific Equipment Facility Instrument (Boris Lepukhov, MDB) Provide INS, GPS, and other information to experiments 2) TDC, Thermo Dynamic Complex PI Instrument (Genrich Shur, CAO) Provides T, P and Wind Comparison of Temperature Measurements on the Geophysica 3) MTP, Microwave Temperature Profiler PI Instrument (MJ Mahoney, JPL/Caltech) Provides temperature profile [T(z)], above, at and below aircraft Calibrated against radiosondes after a field campaign

18. Bjornoya Radiosondes for 2003.03.08 Geophysica flew by at ~28 ks and 32.5 ks UT I believe TDC is better than UCSE because: Better agreement with Bjornoya radiosondes MTP gain fit asymmetrical with UCSE because of change in UCSE during flight

19. CTC Using TDC Temperatures for Reference

20. CTC Using UCSE Temperatures for Reference