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THOR T ornado and H azardous weather ( H urricane) O bservations and R esearch

THOR T ornado and H azardous weather ( H urricane) O bservations and R esearch. Background on funding. NOAA funded FY 2006 (start 8/1/06) for two years FY 2007 (start 8/1/07) for two years FY 2008 is going through the systems FY 2009 is lined up. THOR Activities.

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THOR T ornado and H azardous weather ( H urricane) O bservations and R esearch

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  1. THORTornado and Hazardous weather (Hurricane) Observations and Research

  2. Background on funding • NOAA funded • FY 2006 (start 8/1/06) for two years • FY 2007 (start 8/1/07) for two years • FY 2008 is going through the systems • FY 2009 is lined up

  3. THOR Activities • Interactions between UAH and NOAA (NSSL, NWS) • Infrastructure enhancement ARMOR upgrade (Fall 2006) Parsivel disdrometers (Dec. 2006) MAX (Nov. 2007) MAX enhancements (2008) • Research (severe and hazardous weather) End to End is the goal Tornadoes Squall lines; cool season bow echoes Convective Initiation; lightning initiation Relation between lightning and severe storms Landfalling tropical cyclones QPE (wide variety) Atmospheric Technology • Mobile instrumentation collaboration (targeted obs) Longer term with NOAA/NSSL and OU

  4. THOR personnel • PI level • Knupp, Mecikalski, Petersen, Cecil, Carey • Research Associates: 3 • Graduate students • 9 directly funded • About the same number funded by other sources About 30 individuals are working in the general area of mesoscale meteorology

  5. Infrastructure improvements during last 15 months (FY 06 funds) • Parsivel disdrometers (Dec. 2006) • ARMOR upgrade (Oct. 2006) • Mobile Alabama X-band (MAX) dual pol radar (Nov. 2007)

  6. Gravity Wave/Mesocyclone Interactions • Gravity waves can cause rapid changes in local shear and helicity • Paper to be submitted to Wea. Forecasting. in Nov 2007 • Example case: 2 Feb 2006

  7. Gravity Wave/Mesocyclone Interactions • Gravity waves can produce rapid variations in the wind profile • Example case: 10 May 2006 KHTX

  8. Gravity Wave/Mesocyclone Interactions • Interactions between ducted gravity waves and mesocyclones appear to enhance the rotation within mesocyclones • Careful analysis may show that the F5 Birmingham tornado of 8 April 1998 was enhanced by interaction with an undular bore; manuscript submitted to Mon. Wea. Rev.

  9. Outreach activities • “Gravity Wave Tour”– Explaining gravity waves and their impacts on operational meteorology to NWS and TV forecasters • 5 presentations so far to NWS, Weather Channel, RFC • Plans for up to 7 more in 2008

  10. Atmospheric technology • Ground-based passive microwave remote sensing of high-impact weather • Precip estimation with dual pol radar

  11. Cold front of 16 March 2007

  12. Squall line and wake low event of 8 June 2007

  13. Use of THOR for additional leveraging:NSF Mid-Size Infrastructure proposal • Aerosols -- clouds -- precipitation • $4-4.5 M proposal • MAX-W (or MAX-Ka) • X and W-band dual pol, dual frequency radar (dual freq feed, one dish) • Ceilometer • Profiling radiometer • PR radiometer suite (89 GHz, 37 GHz, 19 GHz) • MIPS enhancements: • New 35 Channel microwave radiometer • W-band vertical pointing cloud radar • New ceilometer • Scanning Doppler lidar for low-level wind and aerosol profiles • Mobile Doppler wind lidar (1.61 m)

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