Navigation Links
New radar satellite technique sheds light on ocean current dynamics
Date:1/24/2008

Ocean surface currents have long been the focus of research due to the role they play in weather, climate and transportation of pollutants, yet essential aspects of these currents remain unknown.

By employing a new technique based on the same principle as police speed-measuring radar guns to satellite radar data, scientists can now obtain information necessary to understand better the strength and variability of surface current regimes and their relevance for climate change.

Scientists at the SeaSAR 2008 workshop held this week in ESRIN, ESA's European Centre for Earth Observation in Frascati, Italy, demonstrated how this new method on data from the Advanced Synthetic Aperture Radar (ASAR) instrument aboard ESAs Envisat, enabled measurements of the speed of the moving ocean surface.

Synthetic Aperture Radar (SAR) instruments, such as ASAR, record microwave radar backscatter in order to identify roughness patterns, which are linked to varying surface winds, waves and currents of the ocean surface. However, interpreting radar images to identify and quantify surface currents had proven very difficult.

By using the new information embedded in the radar signal the Doppler shift of the electromagnetic waves reflected from the water surface Dr Bertrand Chapron of the French Research Institute for Exploitation of the Sea (IFREMER), Dr Johnny Johannessen of Norways Nansen Environmental and Remote Sensing Centre (NERSC) and Dr Fabrice Collard of France's BOOST Technologies were able to determine how surface winds and currents contribute to the Doppler shift.

The Doppler shift occurs due to changing relative velocities, experienced in everyday life in the way the pitch of a siren on a passing ambulance goes up as it approaches, then goes down as the vehicle recedes away.

The shift is introduced by the relative motion between the satellite platform, the rotation of the Earth and the velocity of the particular facet
'/>"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Satellites witness lowest Arctic ice coverage in history
2. UNCCD recognizes importance of satellites for combating desertification
3. Satellites help ensure efficient use of pesticides
4. Telemedicine: Health alert via satellite
5. ASU researchers use NASA satellites to improve pollution modeling
6. New technique can be breakthrough for early cancer diagnosis
7. University of Leicester scientists discover technique to help friendly bacteria
8. New technique reveals subtle force-induced changes in biomolecules conformation
9. New magnetic separation technique might detect multiple pathogens at once
10. New technique captures chemical reactions in a single living cell at unprecedented resolution
11. Software Techniques Inc. Selects M2SYS Fingerprint Software to Meet Continuous Growth and Demand for Desktop Biometric Time & Attendance Solutions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/1/2015)... 1, 2015  Automation and pre-processing are reducing ... screening. This is the first step toward a ... become unintrusive. An assortment of portal scanners, biometric ... investigations will transform the passenger screening process. ... Global Airport Passenger Screening Market ( http://www.frost.com/nf2b ...
(Date:8/31/2015)... Canada , August 31, 2015 ... of biometrics technology in government digitization projects to drive ... to a recently published TechSci Research report, " India Biometrics ... India is projected to grow at a ... the market is anticipated on account of extensive use of ...
(Date:8/31/2015)... 2015 Research and Markets ( http://www.researchandmarkets.com/research/st5b3m/saudi_arabia ) ... Biomedical Sensors Market - Growth, Trends & Forecasts (2014-2020)" ... Saudi Arabia Biomedical Sensors market is estimated at $0.23 ... the period 2014-2020 The near future will ... formulation of each individual. These sensors can be set ...
Breaking Biology News(10 mins):The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 2The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 3The Future of Airport Security: Passenger Screening Transitioning Into an Invisible Process 4India Biometrics Market to Grow at Over 35% Through 2020, Says TechSci Research 2India Biometrics Market to Grow at Over 35% Through 2020, Says TechSci Research 3Saudi Arabia Biomedical Sensors Market Report 2015 - Growth, Trends & Forecasts (2014-2020) 2
... it, bread that contains critical nutrients could help combat ... of a group of Johns Hopkins University undergraduate students ... so that it yields beta carotene, the orange substance ... turns into vitamin A. The students, project ...
... likely, you would be disgusted if confronted with a ... worms. Or a particularly bloody wound. Or a horribly ... disgust you feel may lend important insight into your ... scientists closely measured people,s physiological reactions as they looked ...
... -- Low levels of a brain protein that regulates gene ... disorder, a complex and sometimes disabling psychiatric disease. As reported ... journal of The International Society for Bipolar Disorders, levels of ... of the brain in postmortem samples from patients with bipolar ...
Cached Biology News:Students coax yeast cells to add vitamins to bread 2Students coax yeast cells to add vitamins to bread 3Students coax yeast cells to add vitamins to bread 4That's gross!: Study uncovers physiological nature of disgust in politics 2Gene regulatory protein is reduced in bipolar disorder 2Gene regulatory protein is reduced in bipolar disorder 3
(Date:9/1/2015)... Warren, NJ (PRWEB) , ... September 01, 2015 , ... ... paper that highlights the opportunities for advanced analytics utilizing data lakes in the ... all industries, Healthcare has seen an explosion of data over the last few years ...
(Date:9/1/2015)... Francisco, CA (PRWEB) , ... September 01, 2015 ... ... tools, today announced the release of a groundbreaking new version of its flagship ... rule-based design methodology breaks down complex DNA sequences into numerous genetic parts, which ...
(Date:8/31/2015)... 31, 2015 MabVax Therapeutics Holdings, Inc. (OTCQB: ... the Company,s lead antibody, HuMab 5B1, will be garnering ... during the upcoming World Molecular Imaging Congress (WMIC) being ... 2015. Researchers from the Department of Radiology at Memorial ... the use of MabVax,s lead antibody as a PET ...
(Date:8/31/2015)... 31, 2015  For people with Down syndrome, news ... The biotechnology company, located in the Science + Technology ... best potential therapies yet for people with Down syndrome and ... of Down syndrome and Edwards syndrome aneuploidies in human ... Research . Elixirgen plans to develop this technology into ...
Breaking Biology Technology:New White Paper Explores Data Lake Opportunities in the Healthcare Industry 2GenoCAD Releases Combinatorial Design Tool to Optimize Protein Expression and Streamline DNA Synthesis Orders 2MabVax Therapeutics HuMab 5B1 Antibody Is Highlighted at Upcoming World Molecular Imaging Congress in Five Separate Presentations 2MabVax Therapeutics HuMab 5B1 Antibody Is Highlighted at Upcoming World Molecular Imaging Congress in Five Separate Presentations 3MabVax Therapeutics HuMab 5B1 Antibody Is Highlighted at Upcoming World Molecular Imaging Congress in Five Separate Presentations 4New Down syndrome therapy discovered 2
... , SAN DIEGO, Calif., INDIANAPOLIS, Ind., and CAMBRIDGE, ... ), Eli Lilly and Company (NYSE: LLY ) and Alkermes, ... 20 studies at the 45th Annual Meeting of the European Association for ... 29 to Oct. 2. The companies will present the latest research findings ...
... ... million round of funding. Participating investors included CTTV Investments LLC, the venture capital ... , ... Francisco, CA (PRWEB) September 24, 2009 -- LS9, Inc., the Renewable Petroleum Company™, today ...
... , , PHILADELPHIA and LONDON, ... -- researchers likely to be in contention for Nobel honors -- in anticipation ... be announced from October 5-12. , , Thomson Reuters ... Nobel Prize winners. , , Each year, data ...
Cached Biology Technology:Amylin and Lilly to Present More than 20 Studies for Exenatide at EASD 2009 2Amylin and Lilly to Present More than 20 Studies for Exenatide at EASD 2009 3Amylin and Lilly to Present More than 20 Studies for Exenatide at EASD 2009 4Amylin and Lilly to Present More than 20 Studies for Exenatide at EASD 2009 5Amylin and Lilly to Present More than 20 Studies for Exenatide at EASD 2009 6Amylin and Lilly to Present More than 20 Studies for Exenatide at EASD 2009 7LS9 Secures $25 Million in Latest Round of Funding 2LS9 Secures $25 Million in Latest Round of Funding 3Thomson Reuters Predicts Nobel Laureates 2Thomson Reuters Predicts Nobel Laureates 3Thomson Reuters Predicts Nobel Laureates 4Thomson Reuters Predicts Nobel Laureates 5Thomson Reuters Predicts Nobel Laureates 6
... This product has been developed to significantly ... labeled proteins. Stability is increased at ... 2-8 centigrade. This product is subjected ... mercury or azide. This formulation insures ...
... Blot Strong Antibody Stripping Solution is effective ... that have been developed with chemiluminescence or ... not recommended for stripping colorimetric substrates (TMB, ... possible to effectively remove substrates that precipitate ...
...
... low-pressure system, 100-120 V, is used for ... The system includes the Helios gene gun, ... station, syringe kit, tubing cutter, Helios gene ... The dimensions of the gene gun are ...
Biology Products: