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Latest Global Monitoring for Environment and Security Stories

Images Of Envisat Taken, ESA Still Scrambling To Make Contact
2012-04-20 11:21:16

Lee Rannals for RedOrbit.com The European Space Agency (ESA) lost contact with its flagship Earth observing satellite almost two weeks ago, but the space agency hasn't skipped a beat in trying to make contact with Envisat. The recovery team at ESA is using every source available to try and determine if Envisat has entered its "safe mode."  This mode sees that the satellite placed its solar panels in a position so that it can draw power from the Sun. ESA said on Friday that...

ESA Still Trying To Communicate With Flagship Satellite
2012-04-13 11:16:28

Ground controllers from the European Space Agency (ESA) are still trying to make contact with the space agency's flagship Earth observation mission, Envisat. Radar pictures taken from the ground appear to show that the satellite is intact, but there is no confirmation that Envisat has entered the "safe mode" of an ailing spacecraft. During this mode, the spacecraft ensures the solar panel is pointed at the Sun and that onboard power systems are prioritized above all other activity....

ESA Loses Contact With Envisat
2012-04-12 09:03:59

Controllers from the European Space Agency (ESA) have lost communication with the space agency's flagship Earth observation mission known as Envisat. The mission controllers stopped receiving data from the spacecraft on Sunday, and have not been able to re-establish communications. Envisat, which launched in 2002, has been operating five years longer than its planned mission. While losing communications with satellites is not an uncommon problem, a recovery team is still working to...

Satellite Observes Rapid Ice Shelf Disintegration In Antarctic
2012-04-06 04:16:49

As ESA´s Envisat satellite marks ten years in orbit, it continues to observe the rapid retreat of one of Antarctica´s ice shelves due to climate warming. One of the satellite´s first observations following its launch on 1 March 2002 was of break-up of a main section of the Larsen B ice shelf in Antarctica — when 3200 sq km of ice disintegrated within a few days due to mechanical instabilities of the ice masses triggered by climate warming. Now, with ten years of...

2012-04-05 03:54:35

Natural hazards — like earthquakes and landslides — put people and places at risk every day, but satellites are able to help improve safety and mitigate these risks. International experts will meet next month to discuss how space-based technology can help us prepare for and respond to disasters. Organized by ESA in association with the Group on Earth Observations (GEO), the International Forum on Satellite Earth Observation for Geohazard Risk Management will be held on...

Keeping An Eye – From The Sky – On Volcanoes
2012-03-28 03:43:40

The importance of global and frequent data coverage of volcanoes was highlighted in a recent article published in Science. Satellites are finding that volcanoes previously thought to be dormant are showing signs of unrest. As the 2010 eruption of Eyjafjallajökull in Iceland demonstrated, volcanic eruptions can have consequences over large regions, so the global perspective offered by satellite systems is vital for monitoring volcanoes in remote and inaccessible terrain....

2012-03-28 03:29:34

Satellite are seeing changes in land surfaces in high detail at northern latitudes, indicating thawing permafrost. This releases greenhouse gases into parts of the Arctic, exacerbating the effects of climate change. Permafrost is ground that remains at or below 0°C for at least two consecutive years and usually appears in areas at high latitudes such as Alaska, Siberia and Northern Scandinavia, or at high altitudes like the Andes, Himalayas and the Alps. About half of the...

Space For The Arctic
2012-03-15 08:09:43

[ Watch the Video ] International stakeholders met in Copenhagen this week to discuss the contribution of space technologies to one of the region´s most affected by climate change. Rendered increasingly accessible by the melting of ice, the Arctic is being transformed from a region of primarily scientific interest into one attracting a complex set of environmental, security and commercial concerns. Because of the Arctic´s harsh environment and low population density, space...

Envisat Celebrates 10th Birthday
2012-03-01 10:28:16

[ Watch the Video ] In the early hours of 1 March 2002, the largest Earth observation satellite ever built soared into orbit from ESA´s launch base in Kourou, French Guiana. For a decade, Envisat has been keeping watch over our planet. The eight-ton satellite has doubled its planned five-year lifetime, circling Earth more than 50 000 times. With ten sophisticated optical and radar sensors, the satellite is continuously observing and monitoring Earth´s land, atmosphere,...

Image 1 - On The Topic Of Topography
2012-02-28 04:42:51

In a city where sea level is of particular significance, a scientific conference on the radar that records sea-surface height will be held in September. The deadline for abstract submissions for the symposium in Venice, Italy, on two decades of radar altimetry is fast approaching. The ℠20 Years of Progress in Radar Altimetry´ Symposium will be held at the Venice Convention Centre Palazzo del Casinó from 24 to 29 September 2012. Organized in collaboration with the...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.