Navigation Links
Arctic explorer delivers unique snow-depth data for CryoSat
Date:5/23/2008

Following a formidable 106-day trek across the Arctic, which ended with the two Arctic Arc expedition members relying on Envisat images to guide them safely through disintegrating sea-ice, intrepid polar explorer Alain Hubert recently visited ESA to handover a unique set of snow-depth measurements.

To coincide with the launch of the International Polar Year (IPY) 2007-2008, Alain Hubert and fellow explorer Dixie Dansercoer ventured out onto the sea-ice to embark upon a trek from Siberia to northern Greenland via the North Pole a route never before attempted. Throughout the expedition, the polar explorers had to endure temperatures down to -40C, encounters with polar bears and the incredible physical demand of having to drag heavy sledges across pressure ridges of sea-ice piled up several metres high as well as cross open water where the ice had fractured. Nevertheless, Alain and Dixie took time out every 50 km to make snow-depth measurements for the CryoSat mission.

"It wasn't really difficult to take these measurements for CryoSat," said Alain, "It became part of our routine. The difficult part of the expedition was putting one foot in front of the other when the ice is breaking up around you. As co-founder of the International Polar Foundation, a scientist as well as a seasoned explorer - I aim to form a kind of 'bridge' between science and society. Observing the changes that are occurring in the fragile Arctic environment will help lead to a better understanding of the effects of climate change, and ultimately the Earth system as a whole. CryoSat is an exciting mission that will help answer questions about the polar ice so we were very happy to contribute through our Arctic Arc expedition."

Since the Earth Explorer CryoSat mission, which is due for launch next year, is designed to measure tiny variations in the thickness of floating sea-ice and ice on land, understanding the effects that the overlying snow can have on the measurement of ice elevation is of huge importance. To this end, ESA has in place a dedicated validation programme that involves a number of field campaigns in the polar regions. Measurements collected on the ice and from the air are crucial to fully understand and characterise the geophysical uncertainties in the CryoSat products so that the data CryoSat delivers is interpreted as accurately as possible.

During a presentation held this week at ESA-ESTEC in the Netherlands Alain handed over the dataset to Richard Francis ESA's Project Manager for CryoSat, who commented that, "While snow-depth information holds the key to producing accurate maps of ice-thickness change over time, there are relatively few basic ground-measurements readily available. So when Alain offered to take measurements during his expedition, the CryoSat project was extremely grateful."

In turn, Alain and Dixie were also grateful for help provided by an existing ESA satellite. Under an ESA IPY project, they were able to rely on images from Envisat to guide them through some dangerous ice-break up. Alain explained, "As we approached the coast of northern Greenland, the sea ice in the Lincoln Sea began to break up chaotically - something we really weren't expecting. We realised there was no way we could take our planned route to reach land. Fortunately, however, we were guided by expedition router who relied on information provided by the Danish Technical University using data from ESA's Envisat satellite to help us circumnavigate the open waters and eventually reach land safely."

Malcolm Davidson ESA's CryoSat Validation Manager noted that, "ESA has now released the snow-depth data collected by the Arctic Arc expedition to the CryoSat Validation and Retrieval Team. The team has been quite eager to get the data and start the analysis. Ultimately we expect that in conjunction with the core ESA-sponsored airborne campaigns and similar initiatives from other polar expeditions the data will help us better measure ice-thickness changes over time from space with CryoSat-2."


'/>"/>

Contact: Malcolm Davidson
Malcolm.Davidson@esa.int
31-715-655-957
European Space Agency
Source:Eurekalert

Related medicine news :

1. African seed collection first to arrive in Norway on route to Arctic seed vault
2. Hibernation-like behavior in Antarctic fish -- on ice for winter
3. More than Seventy Percent of Top US Hospitals Control Patient Temperature with High-Tech Arctic Sun(TM)
4. CryoCath Introduces Arctic Front in Australia
5. Explorer completes the map ... for the bodys blueprint
6. Laser Energetics Delivers BrightStar(TM) Alexandrite Laser to Fortune 50 Defense Company
7. Lilly Delivers Strong Third-Quarter Results
8. Kendle Delivers Record Sales and Backlog and Strong Growth in Operating Margin for Third Quarter 2007
9. E.D.G.E. in Leadership Study Delivers First-Ever Data on Executive Women in Pharmaceutical and Biotech Industries
10. Gleevec, the targeted cancer pill, delivers more good news to patients
11. PARIs eFlow Delivers Alnylam RNAi Therapeutic in Phase I Study
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, FCPX ... Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms over ... Cut Pro X . Simply select a ProHand generator and drag it above media ...
(Date:6/25/2016)... ... ... Conventional wisdom preaches the benefits of moderation, whether it’s a matter of indulgence ... high can result in disappointment, perhaps even self-loathing. However, those who set the bar ... from PsychTests.com reveals that behind the tendency to set low expectations is ...
(Date:6/24/2016)... ... 24, 2016 , ... The Pulmonary Hypertension Association (PHA) learned ... receive two significant new grants to support its work to advance research and ... by recognizing patients, medical professionals and scientists for their work in fighting pulmonary ...
(Date:6/24/2016)... Plano, TX (PRWEB) , ... June 24, 2016 , ... ... taking part in Genome magazine’s Code Talker Award, an essay contest in which patients ... for an award to be presented at the 2016 National Society of Genetic Counselors ...
(Date:6/24/2016)... ... June 24, 2016 , ... National recruitment firm Slone Partners ... extensive sequencing and genomics experience, as Vice President of North American Capital Sales at ... responsible for leading the sales team in the commercialization of the HTG EdgeSeq system ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Research and ... News Issue 52" report to their offering. ... influenza treatment creates a favourable commercial environment for MedImmune to ... patient base that will serve to drive considerable growth for ... would serve to cap sales considerably, but development is still ...
(Date:6/23/2016)... 2016  Astellas today announced the establishment of Astellas Farma Colombia (AFC), a new affiliate with operations headquartered in ... America . ... ... ... ...
(Date:6/23/2016)... June 23, 2016 Research and ... Procedure Volumes: Global Analysis (United States, China, Japan, Brazil, ... report to their offering. ... for healthcare business planners, provides surgical procedure volume data ... trends with an in-depth analysis of growth drivers and ...
Breaking Medicine Technology: