Navigation Links
Southern Ocean seals dive deep for climate data
Date:8/12/2008

Elephant seals are helping scientists overcome a critical blind-spot in their ability to detect change in Southern Ocean circulation and sea ice production and its influence on global climate.

According to a paper published today by a team of French, Australian, US and British scientists in the Proceedings of the National Academy of Sciences, elephant seals fitted with special oceanographic sensors are providing a 30-fold increase in data recorded in parts of the Southern Ocean rarely observed using traditional ocean monitoring techniques.

"They have made it possible for us to observe large areas of the ocean under the sea ice in winter for the first time," says co-author Dr Steve Rintoul from the Antarctic Climate & Ecosystem Cooperative Research Centre (ACE CRC) and CSIRO's Wealth from Oceans National Research Flagship.

"Conventional oceanographic platforms cannot provide observations under the sea ice, particularly on the Antarctic continental shelf where the most important water mass transformations take place. Until now, our ability to represent the high-latitude oceans and sea ice in oceanographic and climate models has suffered as a result."

Co-author, University of Tasmania Professor Mark Hindell says the seal data complements traditional oceanographic sampling from ships, satellites and drifting buoys. "By providing ocean measurements under the sea ice, the seals are helping us to establish the global ocean observing system we need to detect and understand changes in the ocean," he says.

The polar regions play an important role in the earth's climate system and are changing more rapidly than any other part of the world. In the southern hemisphere, the limited observations available suggest that the circumpolar Southern Ocean has warmed more rapidly than the global ocean average and that the dense water formed near Antarctica and exported to lower latitudes has freshened in some locations and warmed in others. Polar changes are important because a number of feedbacks involving ocean currents, sea ice and the carbon cycle have the potential to accelerate the rate of change.

The seals typically covered a distance of 35-65 kilometres a day with a total of 16,500 profiles obtained in 2004-5. Of these, 8,200 were obtained south of 60S, nine times more than have been obtained from floats and research and supply ships. The 4,520 profiles obtained within the sea ice is a 30-fold increase over conventional data. The seals dived repeatedly to a depth of more than 500 metres on average and to a maximum depth of nearly 2000m. The Australian team included scientists from CSIRO, the ACE CRC, the University of Tasmania's School of Zoology and Centre for Marine Science and Charles Darwin University.


'/>"/>

Contact: Craig Macaulay
Craig.Macaulay@csiro.au
61-362-325-219
CSIRO Australia
Source:Eurekalert  

Related biology news :

1. Unmanned aircraft to study Southern California smog and its consequences
2. UC Riverside to host conference on stricter air quality standards for Southern California
3. Ozone hole recovery may reshape southern hemisphere climate change
4. Soybean varieties viable in southern Indiana, resistant to root-knot nematode
5. Voyage to Southern Ocean aims to study air-sea fluxes of greenhouse gases
6. Antarctic expedition provides new insights into the role of the Southern Ocean for global climate
7. Southern California institutions to collaborate on stem cell research
8. Climate change and life in the Southern Ocean
9. MIT Holding, Georgia Southern University, and MEVLABS successfully test the PROVECTOR
10. New southernpeas developed by ARS, cooperators
11. More acidic ocean could spell trouble for marine lifes earliest stages
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Southern Ocean seals dive deep for climate data
(Date:3/30/2017)... The research team of The Hong Kong ... identification by adopting ground breaking 3D fingerprint minutiae recovery and matching ... and accuracy for use in identification, crime investigation, immigration control, security ... ... A research team led by ...
(Date:3/28/2017)... 28, 2017 The report "Video ... Monitors, Servers, Storage Devices), Software (Video Analytics, VMS), and ... Global Forecast to 2022", published by MarketsandMarkets, the market ... is projected to reach USD 75.64 Billion by 2022, ... The base year considered for the study is 2016 ...
(Date:3/24/2017)... Mar 24, 2017 Research and Markets has ... Market Analysis & Trends - Industry Forecast to 2025" report ... ... at a CAGR of around 15.1% over the next decade to ... report analyzes the market estimates and forecasts for all the given ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... BALTIMORE, Md. (PRWEB) , ... October 11, 2017 ... ... for digital pathology, announced today it will be hosting a Webinar titled, “Pathology ... of  Advanced Pathology Associates , on digital pathology adoption best practices and how ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and Activator ... osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular STAT3 ...
(Date:10/10/2017)... DALLAS , Oct. 10, 2017 International research firm ... IoT Strategy, will speak at the TMA 2017 Annual Meeting , ... key trends in the residential home security market and how smart safety ... ... "The ...
(Date:10/9/2017)... ... October 09, 2017 , ... The award-winning American Farmer ... first quarter 2018. American Farmer airs Tuesdays at 8:30aET on RFD-TV. , With ... with the challenge of how to continue to feed a growing nation. At the ...
Breaking Biology Technology: