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:10/22/2014)... identity analyst firm Acuity Market Intelligence forecasts that in ... have a chip-based National eID card, including near-complete regional ... Asia , with its vast population, is expected ... of all National eID cards issued between 2014 and ... National eID Industry Report: 2014 Edition" — projects ...
(Date:10/18/2014)... a group of 2,000 patients referred for evaluation ... potential molecular diagnosis for 25 percent, including detection ... new mutations contributing to disease, according to a ... is being released to coincide with the American ... sequencing analyzes the exons or coding regions of ...
(Date:10/17/2014)... for the first time how bacteria can grow directly ... the opportunity to get tremendous insights into bacteria behavior ... discovered the bacterial growth in chronic lung infections among ... by the immune cells. The researchers discovered the immune ... bacteria, forcing the bacteria to switch to a much ...
Breaking Biology News(10 mins):Half the World's Population Will Have Chip-Based National Electronic Identity (eID) Cards by 2018 2Whole-exome sequencing shows potential as diagnostic tool 2Scientists opens black box on bacterial growth in cystic fibrosis lung infection 2
(Date:10/22/2014)... Oct. 22, 2014 Research and ... "Global DNA Diagnostics Market (Product types, Application, ... Global Trends, Company Profiles, Demand, Insights, Analysis, Research, ... report to their offering. ... applications, techniques, end users and Geography) Global Size, ...
(Date:10/22/2014)... October 22, 2014 Involution Studios ... release of a new infographic, Understanding Ebola . ... a beautifully designed, easy to follow informative tool for ... of outbreak, symptoms and prevention. , "As the news ... the 2014 Ebola outbreak represents not only a healthcare ...
(Date:10/22/2014)... According to new market research ... (Consulting, Integration, Deployment & Support), by Service Model ... Private, Others (Hybrid & Community)) - Global Forecast ... the Cloud Professional Services Market into various sub-segments ... It also identifies the drivers and restraints for ...
(Date:10/22/2014)... KONG , Oct. 22, 2014  aTyr Pharma ... that rare disease expert John C. McKew , ... McKew brings more than two decades of expertise in ... Institutes of Health, Wyeth Research and Genetics Institute, Inc. ... aTyr,s efforts to expand and translate its novel Physiocrine ...
Breaking Biology Technology:Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 2Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 3Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3
Cached News: