Java Upwelling Variations Observation (JUVO)

Plan for the Cruise in Mar. 2015

Prepared by

The First Institute of Oceanography, SOA, China Institute for Marine Research and Observation, AMFDR, Indonesia

10 March, 2015

Content 1. JUVO Background

1.1 Overview of the collaborative project JUVO

1.2 JUVO development in line with Indian Ocean Observing System (IndOOS)

2. Scope of work for the cruise in Mar. 2015

2.1 Cruise Outline

2.2 Equipment arrangement

2.3 Vessel arrangement

2.4 Visa arrangement

Cruise Dates : 28 March - 06 April 2015 Participant Scientists:

Tab. 1 List of participants from China

No. Name Nationality Passport

1 Huiwu Wang China P01674395

2 Wei Wu China P01674396

3 Qinglei Su China PE0575517

4 Kuiping Li China PE0022610

5 Yanliang Liu China P01639536

6 Sen Zhang China

Tab. 2 List of participants from Indonesia

No. Name Nationality Institution

1 Teguh Agustiadi Indonesia BPOL - KKP

2 Mukti Trenggono Indonesia BPOL - KKP

3 Bayu Priyono Indonesia BPOL - KKP

4 M. Arief Rahman Indonesia BPOL - KKP

5 Gusti Putu Sukadana Indonesia BPOL - KKP

6 I Nyoman Surana Indonesia BPOL - KKP

7 Irwan Djatmiko Indonesia LPPT - KKP

8 Andi Bahtiar Indonesia LPPT - KKP

9 Asep Priatna Indonesia BPPL - KKP

10 Muhammad Fadli Indonesia Mahasiswa ITB

11 Sugiarto Adi Wibowo Indonesia Mahasiswa UNSOED

12 Rizky Mahriza Utami Indonesia Mahasiswa UNPAD

13 Faeza Amella Adiany Indonesia Mahasiswa UNPAD

14 Security Officer Indonesia

1. JUVO Background

This program outlines an effort to measure the magnitude and variability of

the Java upwelling by deploying a subsurface ADCP mooring system location

(106.75E, 8.5S) and a surface buoy system at location (100E, 8S). The upwelling off

the coast of Java is hypothesized to play a major role in the Indian Ocean Dipole

(IOD), an anomalous climate event similarly to the El Niño in the tropical Pacific

Ocean. The Java upwelling controls the southeast tropical Indian Ocean (TIO) sea

surface temperature (SST) variations at seasonal and inter-annual time scales, which

further affects the local and remote climate.

Despite the importance of the Java upwelling to the regional ocean circulation and

climate, there has been no present field measurement of this upwelling. A strong

seasonal variability of the Java upwelling due to the summer monsoon forcing might

strongly affect the upper ocean conditions and the ocean-atmosphere interaction over

the eastern Indian Ocean. It was suggested that the Java upwelling variations could

cause a strong SST cooling in southeastern TIO in some years and it further develops

into the significant climate anomalies, i.e. IODs. IODs have profound climate and

social-economical impacts on both the Indian Ocean nearby countries and remote

areas through atmospheric tele-connection. These climate anomalies are extremely

important to Indonesia, especially in the dry/wet weather conditions. To understand

the role of Java upwelling on the ocean-atmosphere coupled anomalies and test the

above hypotheses, the long-term monitoring of the upwelling variations off the coast

of Java is essentially necessary.

Through this collaborative observation, FIO and AMFRD jointly contribute to

the ongoing international program “Indian Ocean Observing System (IndOOS)”,

which is under the coordination of CLIVAR1-GOOS2 Indian Ocean Panel. The

mooring and buoy under this implementation agreement are also part of RAMA buoy

array, which is the critical component of IndOOS.

1CLIVAR - Climate Variability and Predictability 2GOOS – Global Ocean Observing System

1.1 Overview of the collaborative project JUVO

Based on the common interests on the Java upwelling observation and research,

the First Institute of Oceanography (FIO), State Oceanic Administration (SOA),

China, and Agency of Marine and Fishery Research and Development (AMFRD),

Indonesia, agreed to jointly carry out the subsurface mooring observation in the Java

upwelling region and signed the implementation agreement for the research program

Java Upwelling Variations and impacts on seasonal fish migration (JUV), in

Haikou/China on Dec. 11, 2006. JUV project is amended to further include one

surface buoy observation at (100E, 8S) and this addendum is signed in Qingdao on

Sep. 3, 2008.

The purpose of JUVO is to develop the long-term in-situ observing capability

over the Java upwelling region, understand the impacts of the Java upwelling on

regional ecosystem, and identify the role of Java upwelling in the Indian Ocean

climate system.

Under the joint efforts of FIO and AMFRD, JUVO project runs successfully. Up

to now, 12 joint cruises have been conducted. The subsurface mooring started its work

from Dec. 2008 and the surface buoy is send back the real time meteorology and

oceanic date from May 30, 2010.

1.2 JUVO development in line with Indian Ocean Observing System (IndOOS)

Despite the important role of the Indian Ocean for African-Asian-Australian

monsoons, climate variability in regions surrounding the Indian Ocean, and its impact

on global climate change through atmospheric tele-connections, a long-term,

sustained observing system in the Indian Ocean had not been started as of about a

decade ago, leaving the Indian Ocean as the least observed ocean among the three

major basins. Recognizing this observation-gap, an enthusiastic spirit emerged after

the OceanObs99 meeting, resulting in the development of the Indian Ocean Observing

System (IndOOS) under the coordination of the CLIVAR/GOOS Indian Ocean Panel.

IndOOS is a multi-platform long-term observing system, which consists of Argo

floats, surface drifting buoys, tide gauges, a surface mooring buoy array, VOS based

XBT/XCTD sections, and satellite measurements as a backbone observation for sea

surface conditions (International CLIVAR Project Office, 2006). The main platform

for in situ observations in the tropical region is the surface and subsurface mooring

array, called as Research moored Array for African-Asian-Australian Monsoon

Analysis and prediction (RAMA) (McPhaden et al., 2009). The RAMA array consists

of a total of 46 moorings, of which 38 are ATLAS/TRITON-type surface moorings. In

addition to these surface buoys, there are 5 subsurface ADCP moorings along the

equator to observe current profiles in the upper equatorial ocean, and 3 deep current-

meter moorings with ADCPs in the central and eastern equatorial regions.

JUVO project maintains one subsurface mooring at (106.75E, 8.5S) and one

surface buoy at (100E, 8S), which are essential components of RAMA/IndOOS.

2. Scope of work for the cruise in Mar. 2015

Following the past 12 JUVO cruises, FIO and AMFRD now successfully maintain

the Java upwelling mooring at (JUV station = 106.75E, 8.5S) and southwest tropical

Indian Ocean buoy at (RAMA station = 100E, 8S). In order to continue the

operational service of the mooring and buoy, FIO and AMFRD will jointly carry out

the 13th cruise in Mar. 2015. The expected cruise time is 10 days. FIO and AMFRD

will share the ship time fees. AMFRD will cover 5 days of ship time fee and FIO will

cover 5 days of ship time fee.

2.1 Cruise Outline

The planned cruise in Mar. 2015 will focus on the following activities (Fig.1),

(1) Service the Java mooring at the location (JUV station = 8°30´S, 106°45´E) by

deploying a replace system;

(2) Recovery the buoy at the location (RAMA station = 8°S, 100°E) deployed in

Apr. 2015;

(3) Carry out the CTD casts to measure the temperature and salinity profile, water

sample, plankton and juvenile larvae at some specified stations (Tab.3) along

the cruise track.

(4) Carry out the glider cast to measure the temperature and salinity profiles of upper 300 m

at real-time mode. The glider will be deployed at the location (GS station = 8°30´S,

106°45´E) with its destination at the location (GF station = 7°06´S, 103°00´E),

and it will be recovered there.

Fig. 1 The planned cruise track and stations

Tab.3 List of the CTD, Biosonic, Water Sample, Plankton and Juvenile Larvae Station

Station

Number.

Latitude Longitude Water

Depth(m)

ST.01 8o30'S 106o45'E 1920

ST.02 8o15'S 103o00'E 5764

ST.03 8o00'S 100o00'E 5672

ST.04 7o51'S 100o30'E 5569

ST.05 7o42'S 101o00'E 5417

ST.06 7o33'S 101o30'E 5213

ST.07 7o24'S 102o00'E 5529

ST.08 7o15'S 102o30'E 6349

ST.09 7o06'S 103o00'E 3261

ST.10 7o00'S 103o20'E 2735

ST.11 6o54'S 103o40'E 2177

ST.12 6o48'S 104o00'E 1839

ST.13 6o42'S 104o20'E 1995

ST.14 6o36'S 104o40'E 1185

ST.15 6o30'S 105o00'E 467

2.2 Equipment arrangement

FIO will provide the mooring system to be deployed at location (JUV station =

106.75E, 8.5S) and glider. The mooring system includes the oceanography

instruments listed in Tab. 4 – Tab. 7. FIO will take care of the equipment

shipment from Qingdao to Jakarta and pay for the necessary clearance and

service fee occurred in Qingdao and in Jakarta. AMFRD will provide the

necessary local assistance on the clearance and transportation of the equipments. Tab.4 Meteorology sensors mounted on the Surface Buoy System (RAMA)

Name Number Parameters to measure

1 Gill Ultrasonic Wind Sensor 1 Wind speed and direction

2 RM Young Self-Siphoning Rain Gauge 1 Precipitation

3 Rotronic Relative Humidity and Air Temperature sensors

1 Relative Humidity and Air Temperature

4 Heise DXD Barometric Pressure 1 Sea surface pressure

5 Eppley PIR Long Wave sensor 1 Solar longwave radiation

6 Eppley PSR Short Wave sensor 1 Solar shortwave radiation

Tab.5 Oceanography instruments mounted on the taut-line of the Surface Buoy System

(RAMA)

Name Number Parameters to measure Nominal depth

1 SeaBird-37 CT 7 Temperature Salinity

0m, 10m, 20m, 40m, 60m, 80m, 100m

2 SeaBird-39 T 3 Temperature 120m, 140m, 500m

3 SeaBird-39 TD 3 Temperature Pressure

200m, 300m, 700m

4 RDI DVS 4 Current speed Current direction

10m, 20m, 40m, 100m

Tab.5 Satellite positioning and data transmission instruments

on the Surfce Buoy System (RAMA)

Name Number Function

1 Argos antenna 1 Positioning

2 Iridium antenna 2 Data transmission

Tab.6 Supplementary instruments on the Surface buoy system (RAMA)

Name Number Function

1 Radar reflector 1 Alerting to pass-by vessels

2 Glass ball 28 Flotation balance

3 Acoustic releasers 2 Recovery 4 Anchor 1 Mooring

Tab.7 Oceanography instruments mounted on the Sub Surface Mooring System (JUV)

Name quantity Function

1 RDI 150K ADCP 2 Current speed Current direction

2 SBE- CTD 3 Temperature, salinity pressure

3 SBE-CTDO 3 Temperature, salinity, pressure, dissolved oxygen

4 Glass ball 8 Flotation balance

5 Nylon rope 4000m Connecting mooring system

6 Anchor 2 Mooring

7 Benthos releaser 4 Recovery mooring system

Fig 2. Configuration of subsurface mooring (JUV)

Fig 3. Configuration of surface buoy (RAMA)

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