Yoshifumi Kuroda, Kentaro Ando, Yukio Masumoto and Keisuke Mizuno

Japan Agency for Marine-Earth Science and Technology Center (JAMSTEC)

1. TRITON data web

2. TRITON operation status

3. Japan EOS Promotion Program, and development of mini TRITON

Review of present TRITON project,and

The plan of Indian Ocean mooring array

TRITON web page http://www.jamstec.go.jp/jamstec/TRITON/real_time/ ・ New TRITON Data Management System and new TRITON web page has started in 2005 ・ hourly data (real time) are available now

・ Example of TRITON data display ８ N,156E (longest TRITON record)

What TRITON accomplished ・ Continually monitors ENSO in the Pacific as the

TAO/TRITON array since January 2000.

・ Started the two Indian Ocean TRITON buoy deployment since October 2001 as a pilot study. TRITON array enables to investigate air-sea interaction and water mass change in the Indo-Pacific warm pool with salinity sensors.

・ Developed the data management and data distribution system.

・ Built a marine technician team for mooring work, data calibration and data processing.

・ Built partnership with BPPT, Indonesia which enabled the buoy recovery operation by Indonesian Research Vessel in 2003.

March, 1998 March, 1999 March, 2000

March, 2001 March, 2002 August, 2002

Development of TRITON buoy array from 1998 to 2002

Purposes; 1. Monitoring ENSO as TAO/TRITON array2. Air-sea interaction over the Pacific and Indian Ocean warm

pool 3. Variability of temperature and salinity in the warm pool - Improvement of the predictability of El Nino

Seventeen (17) TRITON buoys have been maintained since November 2002

New JAMSTEC Budget Initiative Funded・ JAMSTEC received a new 5-year budget starting in

JFY2005 for promoting the Indian Ocean mooring array as a part of "JEPP: Japan EOS (Earth Observation System) Promotion Program" related GEOSS.

・ This fund will enable the development of new small size TRITON buoy (JEPP buoy) and the continuation of the present TRITON sites in the Indian Ocean.

Grand design Current array up to 2007

Wind , Temp, RH, Radiation, Precipitation

1.5mCT

25mCT50mCT75mCT100mCT125mCT150mCT200mCT250mCT300mCTD

500mCT

750mCTD

10mADCM

Floats ｘ ５

release ｘ ２

anchor 4t

Wire rope 750m　

Nylonφ20　

Nylon φ24　

Tem

Sal

Depth

Curr

Release

anchor 2t

Nylon rope φ17

Polypropylene rope φ19

Wire rope 750m　

Glass floats

200mT300mTD

500mTD

1mCT

20mCT

60mT80mT100mCT

10mADCM10mCT

40mCT

Comparison JEPP buoy vs Present TRITON system

m-TRITON Present TRITON

Slack line 　　　　 towed lineScope Line ： Depth 1.3　　　　　　 0.85　

120mT 140mT

From From TOPTOP

From From bottombottom

JEPP test buoy in FY2004JEPP test buoy in FY2004

駿駿　　　　河河　　　　湾湾

Mooring test Mooring test 　　

AreaArea Suruga BaySuruga Bay Date of deployDate of deploy Sep Sep 26,0526,05Date of rec. Dec 7, Date of rec. Dec 7, 0505

JAMSTEC Indian Ocean Mooring Planby Japan EOS Promotion Program (JEPP)Indian Ocean Moored Buoy Network Initiative for Climate Studies （ IOMICS ）

Pilot TRITON

JEPP

（ IOMICS ）

1.5S90E 5S95E Since Oct 2001

FY2005 FY2006 FY2007 FY2008 FY2009

Development Small size buoy system

2 22

2 33 2

One year inter-comparison at 1.5S90E TRITON.

ex..0,90E1.5S90E5S95E

As of February 2006

one monthintensiveobservationat 0,80E

1

Data system Current TRITON data system

Development of Data system for JEPP & merged to current one

? Time of merge is not fixed

Present TRITON ① Cut cost

below half of present construction and maintenance ② Make small and light to enable maintenance by ships in coastal countries ③ Improve data processor reliability and future extension

mini-TRITON

① Indian Ocean mooring array by JEPP② Replace present TRITON array in future

Easy operation

Super site TRITON

Next generation mooring array

Problems ① Require large vessel for maintenance, ② High costs for construction and maintenance, ③ Parts getting old, ④Old fashioned data transmission system.

① Contribute to GEOSS Earth Observing System.② Monitor and study tEl Nino, and Dipole Mode Phenomena.

Super site TRITON High precision,

interdisciplinary sensors

①High precision heat and fresh water flux measurements CO2 ②measurement ③ Utilize present TRITON platform

Relation with OceanSites