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:
TAG: Envisat radar altimetry tracks river levels worldwide

(Date:7/2/2015)... , June 25, 2015 ... the addition of the "Natural Language Processing ... (Recognition, IVR, OCR, Pattern & Image Recognition) - ... offering. The key vendors occupying the ... IBM Corporation, Microsoft Corporation, NetBase Solutions, SAS Institute ...
(Date:7/2/2015)... 2015 Fingerprint Cards has received an ... FPC1155 from the distributor World Peace Industrial Group (WPI), part ... Asia . Deliveries are planned to take ... used by smartphone manufacturers in Asia . ... communicated revenue guidance of approximately 2,200 MSEK for 2015. ...
(Date:6/30/2015)... 30, 2015 Genisphere announced ... to help further develop Genisphere,s therapeutics capabilities and portfolio. ... having spent much of the last 25 years in ... Bioscience, and Johnson & Johnson. Tom started his career ... Biotech Corporate Finance. He graduated from Dartmouth College with ...
Breaking Biology News(10 mins):Natural Language Processing Market by Type (Rule-Based, Statistical, and Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) - Worldwide Forecast to 2020 2FPC Receives Order for Touch Fingerprint Sensors of 268 MSEK 2Genisphere Appoints New CEO, Thomas Bliss 2Genisphere Appoints New CEO, Thomas Bliss 3
(Date:8/3/2015)... -- Halozyme Therapeutics, Inc. (NASDAQ: HALO ) will webcast ... 2015 on Monday, August 10, 2015 at 4:30 p.m. ... and chief executive officer, will lead the call. On ... for the second quarter 2015. The call ... Halozyme,s corporate website and a recording will be made ...
(Date:8/3/2015)... ... August 03, 2015 , ... ... is processed to get such derivatives as ethylbenzene, a precursor to styrene, used ... within the automotive industry for the production of tyres and other components. Thus, ...
(Date:8/3/2015)... , August 3, 2015 E-QURE ... commercialization of its Bio-electrical Signal Therapy device ("BST Device"), ... of hard to heal chronic wounds, today announced that ... Chemipal, an Israeli distributor specializing in medical devices, for ... Chemipal is a 70 years old, sales, marketing ...
(Date:8/3/2015)... ... 03, 2015 , ... Sterlitech Corporation introduces the compact, quiet, ... analytical laboratory equipment. With optimized features, such as PTFE-coated contact surfaces, an oil-free ... maintenance-free solution for a broad range of vacuum filtration applications. , Featuring a ...
Breaking Biology Technology:Halozyme to Host Second Quarter 2015 Financial Results Conference Call 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 2World Benzene Market to Surpass 46 MMT by 2020, According to TechSci Research Report Published at MarketPublishers.com 3E-QURE Corp Signs Second Distribution Agreement in Israel 2E-QURE Corp Signs Second Distribution Agreement in Israel 3Sterlitech Launches New Line of Vacuum Pumps 2
Cached News: