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MICROWAVE TEMPERATURE PROFILER ( mTP ). Boon Lim, Michael Mahoney*, Richard Denning and Jordan Tanabe Jet Propulsion Laboratory Contact : [email protected] In Memoriam. Dr. Michael ‘MJ’ Mahoney passed away in early September in his home in Altadena Cause of death is unknown

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microwave temperature profiler mtp

MICROWAVE TEMPERATUREPROFILER (mTP)

Boon Lim, Michael Mahoney*, Richard Denning and Jordan Tanabe

Jet Propulsion Laboratory

Contact : [email protected]

in memoriam
In Memoriam
  • Dr. Michael ‘MJ’ Mahoney passed away in early September in his home in Altadena
  • Cause of death is unknown
  • He was in between deployments for SEAC4RS in Houston supporting the MTP of course
  • He was 67 years old, and had been PI for the MTP for over 15 years
  • http://mtp.mjmahoney.net/www/

ATTREX 2013

mj before
MJ before

ATTREX 2013

mj graduation
MJ Graduation

ATTREX 2013

mj hero shot
MJ Hero Shot

ATTREX 2013

mtp brief history
MTP Brief History
  • Original airborne system funded by NASA\'s Aviation Safety program for detection of clear air turbulence (CAT) in early 1980s
  • Airborne system designed for the ER-2 for the Stratospheric Troposheric Exchange Project (STEP) based in Darwin, Australia in 1987
  • MTP to date has flown on 9 different airborne platforms, participated in over 60 campaigns and logged over 5500 flight hours
  • MTP serves the Upper Atmospheric Composition Observations (UACO) community

ATTREX 2013

mtp concept of operations
MTP Concept of Operations
  • Microwave radiometer measures the 55 GHz oxygen complex
  • Instrument scans through 10 step positions and over 3 different frequencies
  • Allows for vertical scanning of the atmosphere in front of the aircraft above and below the flight line
  • Vertical resolution is highest close to the aircraft and degrades further away from the aircraft (typical retrieval range is ±8 km)

ATTREX 2013

mtp on the global hawk
MTP on the Global Hawk

Comm Computer

  • Sends status and data packets to ground for real time data processing and display
  • Reads IWG1 UDP packets and reformats in ER-2 Nav Data Recorder RS-232 format to send to Data Unit

Data Unit

  • PC-104 computer that runs code that controls the Sensor Unit
  • Stores data that it receives from the Sensor Unit and also sends it to the Comm Computer

Sensor Unit

- Under control of the Data Unit, it scans from near zenith to near nadir making brightness temperature measurements at three frequencies. It also observes a reference target (white box) for calibration purposes. Measurements are sent to the Data Unit.

ATTREX 2013

mtp and attrex
MTP and ATTREX

Coldpoint

Tropopause

Soundings from Padang, Indonesia, on 2010-08-07,-08, and -15 showing typical (cyan), cold point (yellow) and isothermal (magenta) TTL

Schematic of the Tropical Tropopause Layer (TTL) from ~13-18 km. T structure of the TTL controls H20 flow.

ATTREX 2013

isentropes mountain lee wave
Isentropes Mountain Lee Wave
  • 30km long mountain lee wave (Dornbrack et al. 2002)

ATTREX 2013

attrex 2
ATTREX-2

ATTREX 2013

real time display
Real Time Display
  • Demonstrated on ATTREX and SEAC4RS
  • Data and full profiles are available on the MTS in ‘real time’ (2 minute delay) even with the low data rate comms

ATTREX 2013

instrument status
Instrument Status
  • RFI continues to degrade data
  • Evident at Edwards (low level) and Ellington (high level)
  • Mainly tracking radars, levels at Ellington highest ever seen
  • Only during takeoff, RFI at Edwards continues if we stay on the range

ATTREX 2013

internal aircraft noise
Internal Aircraft Noise
  • Low level noise present on the data during ATTREX-2
  • New switching power supply box installed in zone 28
  • Currently dealing with this issue in processing
  • If possible move this box?
  • Provide better shielding?
  • Has to be debugged in the field

ATTREX 2013

mtp in transition
MTP in Transition
  • MJ and I had planned for a gradual 4 year transition period
  • We had about 1 month (!)
  • Coming up to speed quickly with the software (SEAC4RS data delivered)
  • Currently preparing for ATTREX, including looking at previously processed data
  • I need your help! Please come say hi!
    • If you have ever used the MTP data
    • If you have ever thought about using the MTP data
    • If you have suggestions on features you would like to see
    • If you have trouble with using the data
    • If you want to talk microwave radiometry or retrieval algorithms

ATTREX 2013

hippo
HIPPO
  • Hiaper Pole to Pole Observations
  • Measured cross sections of atmospheric

concentrations pole to pole 5 times from 2009 – 2011

  • CTC from HIPPO-V from Alaska to Hawaii

ATTREX 2013

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