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1988 PowerPoint Presentation

1988

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1988

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  1. 1988

  2. 25 years of HOT Station ALOHA (~4750m deep) Hawaii Ocean Time-series (HOT) October 1988 - present (260 cruises; ~10/yr)

  3. 25 years of HOT Station ALOHA (~4750m deep) NSF NOAA State of Hawaii (UH/SOEST) Hawaii Ocean Time-series (HOT) October 1988 - present (260 cruises; ~10/yr) Mahalonuiloa to countless folks for their contributions to the successes of HOT and Station ALOHA

  4. R. Weller (WHOI) Quantifying the Surface Freshwater Flux at Station ALOHA Roger Lukas*, Fernando Santiago-Mandujano*, Albert Plueddemann+, Robert Weller+, Fred Duennebier*, Bruce Howe* * U. Hawaii at Manoa + Woods Hole Oceanographic Institution Ocean Sciences Meeting 2014

  5. The ocean and the hydrological cycle

  6. Tradewinds – Harvesting Water and Heat From the Ocean NOAA/OAR Ocean Reference Stations Donating to the warm pool

  7. Precious Rains Hawaii’s tenuous water resources ∫(E-P)dt

  8. WHOTS Rainfall and Evaporation Sean Whelan (WHOI) Rainfall – Has small space-time scales Not well-observed from space Poorly represented in NWP model-reanalyses

  9. WHOTS and the hydrological cycle

  10. Winter Storms Interact with ITCZ

  11. WHOTS and the hydrological cycle How stable and reliable are the trends estimated from limited observations? Observations limited in duration and spatial extent; exponential rainfall distributions in space and time

  12. WHOTS Buoy Mixed Layer See poster #2463 by McCoy et al., this session

  13. Multiple data sources and error characteristics

  14. December 5th, 2012 Rainfall Event Molokai NexRad Station ALOHA Molokai NexRAD

  15. HOT Cruise 248Shipboard Rain Gauges

  16. WHOTS-9 Buoy data q prate wind speed wind direction SST Surface salinity

  17. Rainfall Rates from NexRAD

  18. December 5th, 2012 Rainfall Event Hydrophone sound before rainstorm during rainstorm

  19. Spectrogram for Dec 5th2012 db re 1µ Pascal 20 frequency(kHz) 15 4728 m 10 5 0 60 120 150 minutes from 08:50

  20. ALOHA Cabled Observatory 17.5 KHz 10.5 KHz 4728 m 4 KHz

  21. rainfall rate wind speed 4 KHz rainfall rate wind speed 10.5 KHz

  22. 17.5 KHz wind speed rainfall rate

  23. TRMM rain radar mm/hr max min

  24. TRMM Satellite Rainfall Estimates 5-day accumulation estimates

  25. Numerical Weather PredictionModel Rainfall for Station ALOHA 120 WHOTS-9 80 ECMWF 40 0

  26. Summary • Measured rainfall in situ much larger than satellite, comparable to NexRAD weather radar • Time-space variability of rainfall challenges freshwater budgets • Bridging scales is crucial for satellite ground-truthing, and verification of NWP and climate models • Related posters by Nystuen et al. (UW/APL); Poster by Monk et al. (BIOS); Poster by Yang et al. (UW)