Navigation Links
New discoveries could improve climate projections
Date:12/11/2009

New discoveries about the deep ocean's temperature variability and circulation system could help improve projections of future climate conditions.

The deep ocean is affected more by surface warming than previously thought, and this understanding allows for more accurate predictions of factors such as sea level rise and ice volume changes.

High ocean surface temperatures have also been found to result in a more vigorous deep ocean circulation system. This increase results in a faster transport of large quantities of warm water, with possible impacts including reduction of sea ice extent and overall warming of the Arctic.

"The deep ocean is relatively unexplored, and we need a true understanding of its many complex processes," said U.S. Geological Survey Director Marcia McNutt. "An understanding of climate change and its impacts based on sound, objective data is a keystone to the type of long-term strategies and solutions that are being discussed now at the United Nations conference in Copenhagen."

USGS scientists created the first ever 3-D reconstruction of an ocean during a past warm period, focusing on the mid-Pliocene warm period 3.3 to 3 million years ago.

"Our findings are significant because they improve our previous understanding that the deep ocean stayed at relatively constant, cold temperatures and that the deep ocean circulation system would slow down as surface temperatures increased," said USGS scientist Harry Dowsett. "By looking at conditions in the past, we acquire real data that allow us to see the global climate system as it actually functioned."

"The average temperature of the entire ocean during the mid-Pliocene was approximately one degree warmer than current conditions, showing that warming wasn't just at the surface but occurred at all depths" said USGS scientist Marci Robinson. "Temperatures were determined by analyzing marine plankton fossils, which are organisms that inhabited the water's surface, as well as fossils of bottom-dwelling organisms, known as ostracodes."

Global average surface temperatures during the mid-Pliocene were about 3C (5.5F) greater than today and within the range projected for the 21st century by the Intergovernmental Panel on Climate Change. Therefore it may be one of the closest analogs in helping to understand Earth's current and future conditions. USGS research on the mid-Pliocene is also the most comprehensive global reconstruction for any warm period.


'/>"/>

Contact: Jessica Robertson
jrobertson@usgs.gov
703-648-6624
United States Geological Survey
Source:Eurekalert

Related biology news :

1. DNA replication behavior in complex organisms may foreshadow leaps in genomic discoveries
2. New discoveries from Harvard and Baylor get to the heart of cardiovascular disease
3. UC and partners awarded $23 million to transform discoveries into real-world health solutions
4. Field stations foster serendipitous discoveries in environmental, biological sciences
5. MSU discoveries upend traditional thinking about how plants make certain compounds
6. Partnership to accelerate Trudeau Institute discoveries to patient care
7. UCR plant scientists research spawns new discoveries showing how crops survive drought
8. Newly created cancer stem cells could aid breast cancer research
9. Obesity and lack of exercise could enhance the risk of pancreatic cancer
10. Finding that 1-in-a-billion that could lead to disease
11. 60 second test could help early diagnosis of common brain diseases
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced ... will feature emerging and evolving technology through ... Innovation Summits will run alongside the expo portion of ... sessions, panels and demonstrations focused on trending topics within ... advanced design and manufacturing event will take place June ...
(Date:4/11/2017)... , Apr. 11, 2017 Research and ... Market 2017-2021" report to their offering. ... The global eye tracking market to grow at a ... report, Global Eye Tracking Market 2017-2021, has been prepared based on ... covers the market landscape and its growth prospects over the coming ...
(Date:4/6/2017)... Forecasts by Product Type (EAC), ... End-Use (Transportation & Logistics, Government & Public Sector, Utilities ... Generation Facility, Nuclear Power), Industrial, Retail, Business Organisation (BFSI), ... you looking for a definitive report on the $27.9bn ... ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... 2017 , ... Dr. Bob Harman, founder and CEO of VetStem Biopharma, ... The event entitled “Stem Cells and Their Regenerative Powers,” was held on ... DVM, MPVM was joined by two human doctors: Peter B. Hanson, M.D., Chief of ...
(Date:10/10/2017)... SANTA CRUZ, Calif. , Oct. 10, 2017 /PRNewswire/ ... SBIR grant from the NIH to develop RealSeq®-SC (Single ... preparation kit for profiling small RNAs (including microRNAs) from ... Cell Analysis Program highlights the need to accelerate development ... "New techniques for ...
(Date:10/10/2017)... ... 10, 2017 , ... The Pittcon Program Committee is pleased ... scientists who have made outstanding contributions to analytical chemistry and applied spectroscopy. Each ... leading conference and exposition for laboratory science, which will be held February 26-March ...
(Date:10/9/2017)... ... , ... The award-winning American Farmer television series will feature 3 Bar Biologics ... at 8:30aET on RFD-TV. , With global population estimates nearing ten billion people ... to feed a growing nation. At the same time, many of our valuable resources ...
Breaking Biology Technology: