Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Ocean study explores link with Australian and Indonesian rainfall

28.07.2004


A five-nation oceanographic team is taking the first steps in a $3.6 million project studying the major flow of ocean currents between Asia and Australia and how they influence rainfall across Southern Australia and Indonesia.

Scientists are investigating fluctuations in the flow of warm waters from the western Pacific Ocean draining through the Indonesian Archipelago into the Indian Ocean north of Australia.

"Our climate, and particularly the amount of rainfall across the country, is regulated by the oceans around Australia," says CSIRO’s Dr Susan Wijffels.



"Through new satellite and sub-surface technologies we are gradually building a picture of these key influences on rain-bearing cloud band systems in the eastern Indian Ocean. Over the next three years we hope to understand the variations that occur to the flow of currents including any effects of El Nino and La Nina events," Dr Wijffels says.

Dr Wijffels is co-leader of the project, called INSTANT. Sub-surface ocean monitoring equipment valued at more than $2 million has been moored at strategic ’choke’ points across the entry of the currents into Indonesia waters, and their exit to the Indian Ocean through Lombok and Ombai Straits and Timor Passage.

Partially funded by the Australian Greenhouse Office and CSIRO, the array of tidal gauges and ocean moorings will sample pressures, currents, temperature and salinity and provide a record of changing conditions.

Dr Wijffels says the INSTANT science team, comprising US, French, Dutch and Indonesian scientists, has successfully deployed highly sophisticated measuring instruments in the straits from the Indonesian research vessels, Baruna Jaya I and VIII.

She says the data collected will be compared with simple models and computer simulations of the tropical oceans, and the way the oceans then interact with the atmosphere.

"The atmosphere is very sensitive to the distribution of warm waters near the equator. In our region two large warm water pools exist – in the Western Pacific and Eastern Indian Ocean.

"We believe the exchange of warm low salinity water between the Pacific and Indian Oceans through the Indonesian passages will yield critical information on how these two ’pools’ of warm water in our region interact."

Dr Wijffels says it will be at least 18 months before scientists can retrieve the information obtained from the ocean instruments, which are sub-surface and will be serviced and redeployed by the INSTANT team using Indonesian ships in 2005.

Indonesian participation in the project will also have broad benefits, according to joint project Director, Dr Ir. Indroyono Soesilo, of the Indonesian Agency for Marine and Fisheries Research.

"Improved climate predictions will benefit many people living in areas affected by El Nino/La Nina and the Asian-Australian Monsoon," Dr Soesilo says.

"The Republic of Indonesia is strongly affected by these phenomena, and will be able to use the model projections to make informed management decisions regarding agricultural, water and fisheries resource issues and prepare for climate-related forest fires.

"Measurements of the way these waters mix in regions such as the Flores and Banda Seas will provide an important understanding of the processes that sustain fisheries stocks in these seas."

Dr Tony Haymet, Chief of CSIRO Marine Research, emphasises that the INSTANT team research is both an important international research project in its own right, and also a key step in the steady expansion of CSIRO’s research with partners in the oceans north and west of Australia.

Australia has an extensive oceans and climate research program, particularly in the Indian and Southern Oceans, and participates in many international monitoring projects such as the global float array Argo.

Craig Macaulay | EurekAlert!
Further information:
http://www.csiro.au

More articles from Studies and Analyses:

nachricht Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland

nachricht Diabetes Drug May Improve Bone Fat-induced Defects of Fracture Healing
17.03.2017 | Deutsches Institut für Ernährungsforschung Potsdam-Rehbrücke

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: A Challenging European Research Project to Develop New Tiny Microscopes

The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.

To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Researchers shoot for success with simulations of laser pulse-material interactions

29.03.2017 | Materials Sciences

Igniting a solar flare in the corona with lower-atmosphere kindling

29.03.2017 | Physics and Astronomy

As sea level rises, much of Honolulu and Waikiki vulnerable to groundwater inundation

29.03.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>