Updates on POSEIDON and GAIA ocean-climate projects - POGO

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Updates on POSEIDON and GAIA ocean-climate projects - POGO

ong>Updatesong> on POSEIDON and GAIA

ocean-climate projects

Jae Hak Lee, Dongchull Jeon

Korea Ocean Research and Development Institute

POGO-12 Meeting, 25 Jan, 2011, Ansan


Background

• Increasing rates of temperature and sea level in the

western Pacific marginal seas are about two times lager

than those of global ocean mean (IPCC AR4).


• It is getting wetter both in summer and winter in Korea.


Hu et al. (2010)


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KORDI’s ocean observation projects

for climate change study

POSEIDON (2007-2015)

GAIA (2009-2019)


POSEIDON

This is to examine and predict the influence of the oceanic

variability in the NW Pacific Ocean upon the marginal seas

in association with future climate change.

It consists of moorings tailored for examining dynamics of

the NEC, a buoy near Chuuk Island and hydrographic

survey from the East China Sea to Chuuk Island.


M3

5400 m

M1

M2

(10 o N, 152 o E)


GAIA

It is comprised of a modeling component and a substantial

observational effort. The latter includes moorings in the

western boundary current and the equatorial region.

A focus is on equatorial thermocline mixing in the upper

400 m depth, for which CTD, LADCP and MSP will be

deployed along a TAO/TRITON line.


GAIA observation 1:

Equatorial thermocline mixing

• Parameterization of sub grid scale processes for the climate model

- Convective cloud (Kim and Kang, 2010)

- Surface layer ocean mixing (Noh et al. 2011)

- Equatorial thermocline mixing

• Predominance of small vertical scale

structures in the velocity field

• New mixing parameterization schemes

based on the stability of the currents and

wind variability (rather than broad scale

shear of the currents) is needed.

(Kelvin Richards / UH)


Cruise 1

Cruise 2

Cruise 3

Cruise 4

Other cruise

TAO/TRITON/RAMA

2010 2011 2012 2013 2014 2015 2016

RV Mirai

RV Onnuri

US ship/ NSF

RV Onnuri

• MIXET project / UH, WHOI, JAMSTEC, KORDI, SNU ...

• CTD, ADCP, MSP, MMP mooring


GAIA observation 2:

Equatorial time series measurement

• Warm pool type El Nino (El Nino modoki , … )

• There is no meridional ADCP array in the warm pool

region.

OceanSITES


Buoy 1

Buoy 2

Buoy 3

ADCP 1

ADCP 2

2010 2011 2012 2013 2014 2015 2016

POSEIDON

GAIA

GAIA

GAIA

GAIA

• KORDI-NOAA cooperative project

New vessel


GAIA observation 3:

LLWBC and ITF monitoring

• Low latitude western Pacific Ocean

- various zonal currents

- western boundary currents

- permanent eddies

- undercurrents (zonal, wb)

- Indonesia through flow

• Exchange of water, heat, materials …

- Tropical vs subtropical regions

- North vs South Pacific

- Pacific and Indian Oceans


Roadmap (GAIA)

2009 2010 2011 2012 2013~2019

Climate model

Mixing exp.

Equatorial

Time-series

LLWBC

ITF

Planning

Field survey

Parameterization

Planning

Mooring, maintenance

Planning

Mooring, field survey

Planning

Mooring

New RV (5000 tons): 2014


International cooperation and collaboration

POSEIDON

OKMC

RAMA

ITF

study

NPOCE

MIXET

GAIA

SPICE

TAO/TRITON


NPOCE

NPOCE

(North Pacific Ocean Circulation and Climate Experiment)

• IOCAS / China

• Endorsed by CLIVAR

• Observations, modeling

• IOCAS, FIO, SIO, OUC, … ,

KORDI, JAMSTEC, CSIRO,

LDEO, UH, UW, PMEL/NOAA,

U Phil, BRKP/Indonesia,

IRD/New Caledonia, Uni Hamburg,


ITF Monitoring

KORDI, Indonesia

KORDI

Indonesia,

JAMSTEC/Japan

LDEO/USA,

FIO/China,

Indonesia

USA,

Indonesia

Indonesia,

LOCEAN/France

LDEO,NOAA/USA,

Indonesia

CSIRO/Australia


Summary

• The 2 nd decade of 2000’s will be a renaissance

time of ocean observation in the western Pacific

Ocean for climate change study.

• KORDI’s effort for ocean observation will be

sustained and enhanced.


Thank you

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