Hawaii Ocean Time-series Hawaii Ocean Time-series and the ALOHA Observatoryand the ALOHA Observatory

Roger LukasRoger LukasUniversity of HawaiiUniversity of Hawaii

ALOHA Observatory ReviewALOHA Observatory ReviewFebruary 2006February 2006

Surface layer forced by seasonal, interannual Surface layer forced by seasonal, interannual and decadal variations of atmosphere …and decadal variations of atmosphere …

Decadal salinity variation in upper pycnocline Decadal salinity variation in upper pycnocline remotely forced …remotely forced …

Main pycnocline exhibits 15-year long trendMain pycnocline exhibits 15-year long trend

One of many significant results from HOTOne of many significant results from HOT

Last two yearsLast two years

• Continued ~monthly cruises to Station ALOHA … 17+ years!

• WHOTS mooring deployed August 2004(Weller/Lukas)

• redeployed July 2005

• MOSEAN mooring deployed August 2004(Dickey/Karl)

• Seaglider surveys (Emerson/Eriksen)

Next year or soNext year or so

• WHOTS mooring redeployment June 2006

• MOSEAN mooring redeployments

• UH Seagliders (2)• ALOHA cabled observatory

installation• Observatory management issues

– physical layout, logistics– cyberinfrastructure– governance

• Moored profiler to MARS for initial deployment

UW/APL real-time cabled profiling mooring

6 nm

ALOHA Observatory Management IssuesALOHA Observatory Management Issues

MOSEAN(NOPP)

Ocean Reference

Station(NOAA/NSF)

HAW-4connection

UW/APL profiling mooring

ISSUESISSUES

Mechanical interference, including Mechanical interference, including deployments and recoveriesdeployments and recoveries

Acoustic interferenceAcoustic interference(releases, ADCPs, etc.)(releases, ADCPs, etc.)

Sediment trap mooring??

Drifting sediment traps??

http://kela.soest.hawaii.edu/ALOHA

Action ItemsAction Items

•Current funding for HOT ends November 2008; new proposals required

•Support for moving moored profiler to ALOHA needed

•Observatory management support needed

•Protocols, costs and timelines for experiment planning[e.g. benthic community videography (Smith and Drazen, UH)] need to be published