• Costa Rica Coffee Guide

Warming seas rising faster than predicted, NASA scientists say

August 26, 2015

Global sea levels are rising faster than predicted as a result of warming temperatures driven by burning fossil fuels, according to researchers who now say an increase of at least three feet (1 meter) is likely “unavoidable.”

The world’s oceans, expanding due to added heat and melting ice, have risen an average of almost 3 inches since 1992, with some areas seeing an increase of as much as 9 inches, NASA scientists said at a briefing Wednesday that cited new satellite data. Heat already stored in the sea means further sea level rise is almost certain, although how quickly remains unclear, according to a statement from the U.S. National Aeronautics and Space Administration.

“People need to be prepared,” Josh Willis, an oceanographer at the agency’s Jet Propulsion Laboratory in Pasadena, California, said on a conference call. “We’re going to continue to have sea level rise for decades and probably centuries.”

The new numbers up the stakes for coastal communities from Miami to Tokyo to Dhaka, the low-lying Bangladeshi capital where more than 14 million people live. NASA’s projections are on the high end of the 1 to 3-foot increase estimated two years ago by the Intergovernmental Panel on Climate Change, a United Nations-organized group that’s considered the world authority on climate science.

In Greenland and Antarctica, “the data collected over the last few years make me more concerned about rapid decay of ice sheets,” Eric Rignot, a University of California-Irvine glaciologist, said on the call. “This is not a futuristic scenario.”

Uncertainties remain over how fast polar ice and glaciers will melt, and natural variations mean the impact will differ around the globe, researchers said. In parts of the Pacific Ocean off the U.S. West Coast, sea levels have risen more slowly and in some cases decreased, though they are likely to catch up with the increases elsewhere in coming decades, Willis said.

Negotiators from more than 190 nations are trying to reach an agreement this year, committing all countries to rein in pollutants blamed for climate change. While that won’t reverse warming that’s leading oceans to rise, negotiators are aiming to keep the increase to no more than 2 degrees Celsius (3.6 degrees Fahrenheit) by the end of the century.

© 2015, Bloomberg

You may be interested

Avianca to offer direct flights between Miami and Costa Rica
Costa Rica
1914 views
Costa Rica
1914 views

Avianca to offer direct flights between Miami and Costa Rica

Alejandro Zúñiga - April 10, 2021

Avianca announced a daily nonstop flight between the San José area and Miami, Florida, scheduled to start July 1. According…

Panama authorizes use of Chinese vaccine against Covid-19
Latin America
2121 views
Latin America
2121 views

Panama authorizes use of Chinese vaccine against Covid-19

AFP - April 10, 2021

Panama authorized "emergency" use of the CoronaVac vaccine, from the Chinese pharmaceutical company Sinovac, to combat Covid-19, the government announced…

Costa Rica coronavirus data for Friday, April 9
Costa Rica
59 views
Costa Rica
59 views

Costa Rica coronavirus data for Friday, April 9

The Tico Times - April 9, 2021

The country registered 907 new cases of Covid-19 on Wednesday, April 7; 877 on Thursday, April 8; and 914 cases…