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Hurricane Irene, er, I mean Rina, Debrief

Hurricane Irene, er, I mean Rina, Debrief. Rob Rogers November 4, 2011. Agenda. Hurricane Rina Missions P-3 TDR missions (Eric and Sim) G-IV mission (John K.) TDR performance, data transmission, etc. (John G.) HEDAS (Sim) H*Wind (Mark) Visiting Scientist Program (Sim)

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Hurricane Irene, er, I mean Rina, Debrief

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  1. Hurricane Irene, er, I mean Rina, Debrief Rob Rogers November 4, 2011

  2. Agenda • Hurricane Rina Missions • P-3 TDR missions (Eric and Sim) • G-IV mission (John K.) • TDR performance, data transmission, etc. (John G.) • HEDAS (Sim) • H*Wind (Mark) • Visiting Scientist Program (Sim) • Logistics (All) • Travel to Tampa • Hotel • Safety • Social Media • Blog/Twitter • Overall perception of HFP this year (Murillo)

  3. 20111025H1

  4. 20111025H1 • Summary • 2000 UTC takeoff • Butterfly pattern (3 legs), 90 mi radial legs • Drops center, 30, 60, 90 mi (22 total) • 10 AXBTs @ turn pts and 30 mi from center • 10K ft • Issues • 10K ft on first pass, dropped to 8K due to ice • WS went down once. 2 of 3 analyses not sent in RT • Aircraft engine compressor out, cabin uncomfortable

  5. 111026H1 RINA • The mission was delayed 4 h due to EDC problems. • We decided to go without the EDCs instead of scrubbing the missions. • This meant shortening the mission from a butterfly to a single figure-4 pattern • Other problems: Communication between AVAPS and HAPS was spotty • Communications between scientists, flight directors, and others onboard • Wrong mission ID on sondes (CARCAH did not catch this until after the mission) • LPS laptop was dead during the mission

  6. Vortex was tilted northeastward with height Maximum low-level winds ~85 kt Scatterers to 18 km Graupel at 10,000 ft in rainband off Yucatan

  7. 20111026H2

  8. 20111026H2 • Summary • 2000 UTC takeoff • Rotated fig-4 (4 legs), 90 mi radial legs, west part of pattern clipped due to proximity to Mexico coast • Drops center, 30, 60, 90 mi (23 total, 2 x-mit) • 10 AXBTs @ turn pts and 30 mi from center • 10K ft • Issues • WS went down numerous times. • AOC (twice) opened HP to clean/re-seat peripheral hardware • No further problems occurred • Only 1 of 4 Doppler analyses sent in RT • Late takeoff @ 2107 UTC due to delay in addressing engine compressor problem • Engine #3 shutdown on return to base (false alarm)

  9. 111027H1 RINA The mission was delayed 3 h due to problems on previous mission. Everything worked much better during this flight. Laptop was replaced with 43 laptop, and communications much improved Upon approach to storm, Cancun and Belize radar showed what looked like two vortices, a low-level eyewall remnant and a mid-level vortex more than 100 km to the north. Did Figure-4 pattern with two boxes around strong convection in eyewall remnant.

  10. 0.5 km Shallow vortex Second vortex possible well north of center 2.5 km 6.5 km 10 km

  11. 0.5 km Shallow vortex Two vortices possible well north of center 2.5 km 6 km 10 km

  12. G-IV flight track for 10/25 at 1730 Z Science motivation: Initially an RI flight became documentation of impact of near storm environmental wind shear on storm intensity Logistical issues: Impact of flight length on- 1. Assimilation of GPS drops into GFS 2. Succeeding NHC tasked missions

  13. TDR Performance in Rina John Gamache

  14. Problems • Flight 1 (111025H1): • Workstation went down during first penetration • Workstation remained up afterward • Discovered a “feature”—start time of interpolation for 3D analysis must be the same as cross-section start time—delayed transmission of first data, but all data from flight legs after penetration 1 made it to the ground in time

  15. Problems (continued) • Flight 2 (111026H1)—Workstation and analysis worked as expected—all TDR data sent and received • Flight 3 (111026H2)—(“The flight from hell”) • Workstation failed numerous times, no TDR data sent from aircraft. • Workstation repaired (cleaning all card connections as reseating them)

  16. Problems (continued) • Flight 4 (111027H1) • Workstation performed without failure • One user-unfriendliness issue occurred. Flight data was not changed in “jobfile_display”, which caused the analysis to fail first time. After flight data changed, analyses performed without fail. • All TDR data sent and received

  17. Summary • Communication on AOC side performed without fail. • HP-Workstation issues prevented some data from flight 1 and all data from flight 3, from reaching NCO, or superobs from reaching AOML for those same times. • A “feature” in automatic superobing made life more difficult on Flight 1. • Lack of an error check on flight date made life a little more difficult on Flight 4. • Missing superobs and quality-controlled radials have since been produced.

  18. Performance of HEDAS (H3VK) near real-time runs for 2011 Still have some Irene, Ophelia, Hilary and Rina forecasts to complete

  19. Performance of HEDAS (H3VK) runs for 2008-2011 Still have 3 Fay, 1 Danny, 2 Earl and a few in 2011 to complete

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