Sentences with phrase «ice per year since»

And in an alarming sign of events to come, Antarctica has been losing about 134 billion metric tons of ice per year since 2002.

Not exact matches

Satellites from NASA and other agencies have been tracking sea ice changes since 1979, and the data show that Arctic sea ice has been shrinking at an average rate of about 20,500 square miles (53,100 square kilometers) per year over the 1979 - 2015 period.

The Arctic's sea ice maximum extent has dropped by an average of 2.8 percent per decade since 1979, the year satellites started measuring sea ice.

Global average sea level has risen by roughly 0.11 inch (3 millimeters) per year since 1993 due to a combination of water expanding as it warms and melting ice sheets.

According to the latest report from the Intergovernmental Panel on Climate Change (IPCC), the Greenland ice sheet has been contributing between 0.25 mm and 0.41 mm per year to global sea levels since 1993.

It means that the Arctic sea ice has continued to thin by 0.1 m per year since Rothrock et al. reported in 1999.

Landsat 7 and 8 imagery from 2013 through 2015, when compared to earlier estimates based on synthetic aperture radar, indicated ice discharge of 1,932 ± 38 gigatons per year — an increase of 35 ± 15 gigatons per year since roughly 2008.

e.g. there is 1) a mild global cooling from the Holocene Climatic Optimum 2) A millenial scale oscillation of ~ 1500 years per Loehle & Singer above (i.e. an approximately linear rise from the Little Ice Age — or better an accelerating natural warming since the LIA) 3) A 50 - 60 year multidecadal oscillation.

Since the late 1970s, the Arctic has lost an average of 20,800 square miles of sea ice per year, while the Antarctic has gained an annual average of 7,300 square miles.

The September rate of sea ice decline since 1979 is now approximately 10 percent per decade, or 72,000 square kilometers (28,000 square miles) per year (see Figure 3).

This curve is statistically speaking a «random walk», with no robust statistical correlation with atmospheric CO2, which has seen no cycles but has increased at a fairly constant CAGR of around 0.4 % per year since measurements started at Mauna Loa in 1958 and at an estimated somewhat slower rate before this, based on ice core data.

Since 1992, the Antarctic and Greenland ice sheets have lost enough ice — over 344 billion tons — to contribute 0.6 millimeters (0.02 inches) to the total observed 3 - millimeter (0.1 - inch) sea - level rise per year.