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:6/27/2016)... Lafayette, California (PRWEB) , ... ... ... a pioneer in the patient payment industry today announced its strategic partnership ... and health system workflows. , The two companies’ proven, proprietary technology combine ...
(Date:6/26/2016)... ... June 27, 2016 , ... Quality metrics are proliferating in cancer ... they remain in the eye of the beholder, according to experts who offered insights ... American Journal of Managed Care. For the full issue, click here . , ...
(Date:6/26/2016)... North Carolina (PRWEB) , ... June 26, 2016 , ... ... release of a new product that was developed to enhance the health of felines. ... for centuries. , The two main herbs in the PawPaws Cat Kidney Support ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... and applications at AcademyHealth’s Annual Research Meeting June 26-28, 2016, at the Hynes ... important health care topics including advance care planning, healthcare costs and patient and ...
(Date:6/25/2016)... ... June 25, 2016 , ... "With 30 hand-drawn hand gesture animations, ... Christina Austin - CEO of Pixel Film Studios. , ProHand Cartoon’s package transforms ... Final Cut Pro X . Simply select a ProHand generator and drag it above ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016  MedSource announced today ... its e-clinical software solution of choice.  This latest ... possible value to their clients by offering a ... preferred relationship establishes nowEDC as the EDC platform ... MedSource,s full-service clients.  "nowEDC has long been a ...
(Date:6/23/2016)... Any dentist who has made an implant supported ... Many of them do not even offer this as a ... laboratory costs involved. And those who ARE able to offer ... high cost that the majority of today,s patients would not ... Zadeh , founder of Dental Evolutions Inc. and inventor of ...
(Date:6/23/2016)... startling report released today, National Safety Council research shows ... plan to eliminate prescription opioid overdoses. Prescription Nation ... the worst drug crisis in recorded U.S. history, assigned a "Making ... , New Mexico , Tennessee ... states, three – Michigan , Missouri ...
Breaking Medicine Technology: