MICROWAVE TEMPERATURE PROFILER (mTP)

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MJ Mahoney PI, Microwave Temperature Profiler (MTP) Jet Propulsion Laboratory California Institute of Technology Pasadena, California, USA URL:

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Presentation transcript:

MICROWAVE TEMPERATURE PROFILER (mTP) Boon Lim, Michael Mahoney*, Richard Denning and Jordan Tanabe Jet Propulsion Laboratory Contact : bhlim@jpl.nasa.gov

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/ 10/24/2013 ATTREX 2013

Mr. MTP at GLOPAC 10/24/2013 ATTREX 2013

MJ before 10/24/2013 ATTREX 2013

MJ Graduation 10/24/2013 ATTREX 2013

10/24/2013 ATTREX 2013

MJ Hero Shot 10/24/2013 ATTREX 2013

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 10/24/2013 ATTREX 2013

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) 10/24/2013 ATTREX 2013

MTP on the Global Hawk Comm Computer Data Unit Sensor Unit 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. 10/24/2013 ATTREX 2013

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. 10/24/2013 ATTREX 2013

Isentropes Mountain Lee Wave 30km long mountain lee wave (Dornbrack et al. 2002) 10/24/2013 ATTREX 2013

ATTREX-2 10/24/2013 ATTREX 2013

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 10/24/2013 ATTREX 2013

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 10/24/2013 ATTREX 2013

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 10/24/2013 ATTREX 2013

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 10/24/2013 ATTREX 2013

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 10/24/2013 ATTREX 2013