HOME >> MEDICINE >> NEWS
Radar altimetry confirms global warming is affecting polar glaciers

Scientists have confirmed that climate warming is changing how much water remains locked in the Antarctic and Greenland ice sheets, according to an article published in the Journal of Glaciology.

Using radar altimeter data from ESA's ERS-1 and ERS-2, Jay Zwally, a scientist at NASA's Goddard Space Flight Center, and his colleagues mapped the height of the ice sheets and found there was a net loss of ice from the combined sheets between 1992 and 2002 and a corresponding rise in sea level.

Polar ice plays a crucial role in regulating global climate because it reflects about 80 percent of the incoming sunlight. If the ice caps over the polar ocean melt, the ocean water would absorb a large part of the radiation energy, which would lead to further melting of the ice and further warming of the climate.

According to the NASA study, published in the March edition, 20 billion net tonnes of water are added to oceans each year as a result of Greenland's ice sheet gaining some 11 billion tonnes of water annually, while Antarctica loses about 31 billion tonnes per year.

The study found that Antarctica lost much more ice to the sea than it gained from snowfall, resulting in an increase in sea level, while the Greenland ice sheet gained more ice from snowfall at high altitudes than it lost from melting ice along its coast.

A recent study by Eric Rignot of NASA's Jet Propulsion Laboratory and University of Kansas scientist Pannir Kanagaratnam, published in Science in February, showed Greenland glaciers are melting into the sea twice as fast as previously believed.

Using satellite data collected between 1996 and 2005 by ESA's remote sensing satellites ERS-1 and ERS-2, ESA's Envisat and Canada's Radarsat-1, they found Greenland's southern glaciers are now dumping twice as much ice yearly into the Atlantic as they did in 1996, accounting for nearly 17 percent of the estimated 2.54 millimetre annual rise in global sea levels. '"/>

Contact: Mariangela D'Acunto
mariangela.dacunto@esa.int
39-069-418-0856
European Space Agency
17-Mar-2006


Page: 1 2 3

Related medicine news :

1. Study confirms health benefits of whole grains
2. Rhode Island Hospital study confirms RF ablation effective for treating inoperable lung cancer
3. New data from NIH lab confirms protocol to reverse type 1 diabetes in mice
4. Recent study confirms warning signs of painkiller abuse
5. Better after-school snack choices boost nutrition for low-income kids, UC Davis research confirms
6. Specimen radiography confirms success of MRI-guided breast biopsy
7. Clinical trial confirms novel EGFR antibody targets tumors but not normal tissues
8. Five-year study confirms Gleevecs long-term benefits
9. ESA confirms CryoSat recovery mission
10. Stanford researcher says new data confirms they help women avoid hip fractures
11. Kegel exercises reduce urinary incontinence in women, study confirms

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/5/2019)... ... December 05, 2019 , ... Intelligent.com, ... the Top 54 RHIT Degree Programs for 2020. The comprehensive research guide is ... Each program is evaluated based on curriculum quality, graduation rate, reputation, and post-graduate ...
(Date:12/4/2019)... ... December 04, 2019 , ... A November 12 ... cities offer them as public transit options. The article highlighted the life-changing or life-ending ... confined to a bed to a rider fatality after an incident with a vehicle. ...
(Date:12/4/2019)... ... December 04, 2019 , ... ... Insights Awards™, the only national awards dedicated to recognizing excellence in the areas ... awards were presented in nine different categories during the GlobeSt Healthcare Conference today ...
(Date:12/4/2019)... , ... December 04, 2019 , ... ... study of AZD4041 for treating tobacco use and dependence. The study will investigate ... nervous system (CNS) penetrant antagonist of orexin-1 (hypocretin-1) receptors that is being developed ...
(Date:12/2/2019)... ... ... Interim HealthCare Inc. , a national franchisor of home care, hospice ... . Selected for its multi-pronged approach to building a strong workforce, Interim HealthCare’s commitment ... By 2025, the U.S. will need to hire 2.5 million new healthcare workers to ...
Breaking Medicine News(10 mins):
(Date:12/2/2019)... (PRWEB) , ... December 02, 2019 , ... ... owner of A Mission for Michael, an intensive mental health facility, announced it ... to oversee client relations, business development and national advocacy efforts. , "We are ...
(Date:12/2/2019)... ... December 02, 2019 , ... Smile ... dental groups in the United States, today announced the grand opening of another ... , Patients will enjoy convenient hours, a comfortable office and full-service care ...
(Date:12/2/2019)... ... December 02, 2019 , ... Strong public health departments ... learn, and play. Striving to fulfill their crucial mission, more and more health ... by the Public Health Accreditation Board (PHAB). Today, PHAB announced it has awarded ...
Breaking Medicine Technology:
Cached News: