Quantcast

Sea Level Rising Faster Than Expected, NASA Warns

Climate

New research underway indicates that at least three feet of global sea level rise is near certain, National Aeronautics and Space Administration (NASA) scientists warned Wednesday.

Sea levels have already risen 3 inches on average since 1992, with some areas experiencing as much as a 9-inch rise. Photo credit: NASA / Saskia Madlener

That's the higher range of the one to three feet level of rise the UN Intergovernmental Panel on Climate Change (IPCC) gave in its 2013 assessment.

Sea levels have already risen three inches on average since 1992, with some areas experiencing as much as a 9-inch rise.

"Given what we know now about how the ocean expands as it warms and how ice sheets and glaciers are adding water to the seas, it’s pretty certain we are locked into at least three feet of sea level rise and probably more," said Steve Nerem of the University of Colorado, Boulder and lead of NASA's interdisciplinary Sea Level Change Team. "But we don't know whether it will happen within a century or somewhat longer."

The Greenland ice sheet has contributed more greatly to sea level rise, losing an average of 303 gigatons of ice a year over the past decade, while the Antarctic ice sheet has lost an average of 118 gigatons a year. But scientists at NASA and the University of California, Irvine warned last year that glaciers in the West Antarctic "have passed the point of no return."

Glaciologist Eric Rignot of the UC-Irvine and NASA's JPL and lead author of the West Antarctic study, stated Wednesday that East Antarctica’s ice sheet remains a wildcard.

"The prevailing view among specialists has been that East Antarctica is stable, but we don’t really know," Rignot stated. "Some of the signs we see in the satellite data right now are red flags that these glaciers might not be as stable as we once thought."

Exactly how much rise will happen and when is uncertain, they say. "We’ve seen from the paleoclimate record that sea level rise of as much as 10 feet in a century or two is possible, if the ice sheets fall apart rapidly," said Tom Wagner, the cryosphere program scientist at NASA Headquarters in Washington. "We’re seeing evidence that the ice sheets are waking up, but we need to understand them better before we can say we’re in a new era of rapid ice loss."

YOU MIGHT ALSO LIKE

One of World’s Fastest Melting Glaciers May Have Lost Largest Chunk of Ice in Recorded History

The World’s Oceans Are in Peril

EcoWatch Daily Newsletter

Wesley Martinez Da Costa / EyeEm / Getty Images

By David R. Montgomery

Would it sound too good to be true if I was to say that there was a simple, profitable and underused agricultural method to help feed everybody, cool the planet, and revitalize rural America? I used to think so, until I started visiting farmers who are restoring fertility to their land, stashing a lot of carbon in their soil, and returning healthy profitability to family farms. Now I've come to see how restoring soil health would prove as good for farmers and rural economies as it would for the environment.

Read More Show Less
skaman306 / Moment / Getty Images

By Jillian Kubala, MS, RD

Radish (Raphanus sativus) is a cruciferous vegetable that originated in Asia and Europe (1Trusted Source).

Read More Show Less
Sponsored
Tinnakorn Jorruang / iStock / Getty Images

By Dan Nosowitz

The budding research on cannabidiol, or CBD, attracts a great deal of interest in the agricultural field.

Read More Show Less
Oksana Khodakovskaia / iStock / Getty Images

By Jillian Kubala, MS, RD

The loquat (Eriobotrya japonica) is a tree native to China that's prized for its sweet, citrus-like fruit.

Read More Show Less

The Centers for Disease Control (CDC) released new numbers that show vaping-related lung illnesses are continuing to grow across the country, as the number of fatalities has climbed to 33 and hospitalizations have reached 1,479 cases, according to a CDC update.

Read More Show Less
Sponsored
During the summer, the Arctic tundra is usually a thriving habitat for mammals such as the Arctic fox. Education Images / Universal Images Group via Getty Images

Reports of extreme snowfall in the Arctic might seem encouraging, given that the region is rapidly warming due to human-driven climate change. According to a new study, however, the snow could actually pose a major threat to the normal reproductive cycles of Arctic wildlife.

Read More Show Less
Vegan rice and garbanzo beans meals. Ella Olsson / Pexels

By Alina Petre, MS, RD (CA)

One common concern about vegan diets is whether they provide your body with all the vitamins and minerals it needs.

Many claim that a whole-food, plant-based diet easily meets all the daily nutrient requirements.

Read More Show Less
A fracking well looms over a residential area of Liberty, Colorado on Aug. 19. WildEarth Guardians / Flickr

A new multiyear study found that people living or working within 2,000 feet, or nearly half a mile, of a hydraulic fracturing (fracking) drill site may be at a heightened risk of exposure to benzene and other toxic chemicals, according to research released Thursday by the Colorado Department of Public Health and Environment (CDPHE)

Read More Show Less