HOME >> BIOLOGY >> NEWS
Envisat radar altimetry tracks river levels worldwide

Next week ESA previews a new product range called River and Lake Level from Altimetry that provides previously inaccessible information on water levels of major lakes and rivers across the Earth's surface, derived from Envisat and ERS radar altimeter measurements. Hydrologists can use this new data to monitor river heights around the planet, assess the impact of global warming and help with water resource management. Inland water bodies are important as key sources of both water and food for the people living round them. They are also often regions of maximum biodiversity and represent early indicators of regional climate change.

A new processing algorithm has been developed to extract rivers and lakes level findings from raw radar altimeter data. The development effort was headed by Professor Philippa Berry of the UK's De Montfort University: "The new radar altimeter product is a great leap forward for hydrologists. It gives them a new tool to study both the historical changes in water table levels and critically important data to use in forecasting models of water availability, hydroelectric power production, flood and drought events and overall climate changes."

The Radar Altimeter 2 (RA-2) flown aboard ESA's Envisat environmental satellite is the improved follow-on to earlier radar altimeters on the ERS-1 and ERS-2 spacecraft. From its 800 km-high polar orbit it sends 1800 separate radar pulses down to Earth per second then records how long their echoes take to return timing their journey down to under a nanosecond to calculate the exact distance to the planet below.

Radar altimeters were first flown in space back in the 1970s, aboard NASA's Skylab and Seasat. These early efforts stayed focused firmly on the oceans, as less-smooth land surfaces returned indecipherable signals. But as the technology improved reliable land height data became available. Envisat's RA-2 has an innovative 'four-wheel drive' tracking system allowing it to
'"/>

Contact: Jerome Benveniste
jerome.benveniste@esa.int
39-06-941-80-553
European Space Agency
25-Sep-2003


Page: 1 2 3

Related biology news :

1. Envisat fishes up facts behind Chilean giant squid invasion
2. Envisat concludes a busy second year in orbit
3. Envisat observes resurgent ozone hole
4. Envisat focuses on carbon-rich peat swamp forest fires
5. Envisats ASAR reveals extent of massive oil spill off Spanish coast
6. Researchers developing radar technology to detect mold behind walls
7. MIT aims radar research at breast cancer
8. Ground-penetrating radar detects hard-to-find hazardous waste
9. 90 million year old dino tracks found on resort island
10. International science team tracks ocean predators around the globe
11. New class of antibiotics stops pathogens in their genetic tracks

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/2/2016)... NEW YORK , Feb. 2, 2016 ... healthcare facilities are primarily focused on medical ... that measure point-of-care parameters. Wearable devices that ... a user,s freedom of movement are being ... sensors for human biomedical signal acquisition coupled ...
(Date:2/2/2016)... YORK , Feb. 2, 2016 ... of that Rising Market Are you interested ... analysis forecasts revenues for checkpoint inhibitors. Visiongain,s report ... market, submarket, product and national level. Avoid ... discover what progress, opportunities and revenues those emerging ...
(Date:2/2/2016)... 2, 2016   Parabon NanoLabs (Parabon) ... Army Research Office and the Defense Forensics and ... of the company,s Snapshot Kinship Inference ... more generally, defense-related DNA forensics.  Although Snapshot is ... appearance and ancestry from DNA evidence), it also ...
Breaking Biology News(10 mins):
(Date:2/10/2016)... Feb. 10, 2016  Allergan plc (NYSE: AGN ... Brent Saunders , Allergan,s CEO and President, will ... chat session at the RBC Capital Markets Healthcare Conference ... at The New York Palace Hotel in ... webcast live and can be accessed on Allergan,s Investor ...
(Date:2/10/2016)... (PRWEB) , ... February 10, 2016 , ... ... attend the International Society of Pharmaceutical Engineering (ISPE) Rocky Mountain Chapter 21st Annual ... is expecting to fill more than 100 tables for its annual event, which ...
(Date:2/10/2016)... ... February 10, 2016 , ... PatientCrossroads announces that ... secure online PatientCrossroads platform, has exceeded both its one-year and overall recruitment goals ... study, which seeks to advance understanding of the hereditary risks for certain kinds ...
(Date:2/10/2016)... Jolla CA (PRWEB) , ... February 10, 2016 , ... ... new agents for the treatment of Alzheimer’s disease, announced today it has been selected ... February 18th at the Breakers in Palm Beach, Florida. The purpose of the ...
Breaking Biology Technology:
Cached News: