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originally posted by: intrptr
originally posted by: seasonal
a reply to: soficrow
Wow just a few months ago it was at a record high amount of ice, now it is at a record low???....
Almost sounds like fake news.
How they ascertain those record levels exactly is a mystery science all its own.
originally posted by: TinfoilTP
originally posted by: seasonal
a reply to: soficrow
Wow just a few months ago it was at a record high amount of ice, now it is at a record low???....
Almost sounds like fake news.
A big chunk must have fell off recently so they can update their data to favor their propaganda.
Scott and Shackleton logbooks prove Antarctic sea ice is not shrinking 100 years after expeditions
Antarctic sea ice had barely changed from where it was 100 years ago, scientists have discovered, after poring over the logbooks of great polar explorers such as Robert Falcon Scott and Ernest Shackleton.
Experts were concerned that ice at the South Pole had declined significantly since the 1950s, which they feared was driven by man-made climate change.
But new analysis suggests that conditions are now virtually identical to when the Terra Nova and Endurance sailed to the continent in the early 1900s, indicating that declines are part of a natural cycle and not the result of global warming.
originally posted by: dogstar23
originally posted by: intrptr
originally posted by: seasonal
a reply to: soficrow
Wow just a few months ago it was at a record high amount of ice, now it is at a record low???....
Almost sounds like fake news.
How they ascertain those record levels exactly is a mystery science all its own.
Nah, we've had satellites figured out for awhile now.
The "records" they refer to indicate that they're the records "since we began tracking" sea ice in 1979. We have no way of measuring before that, as when sea ice melts, it becomes, well, sea water.
NASA
Data from NASA's GRACE satellites show that the land ice sheets in both Antarctica and Greenland are losing mass. The continent of Antarctica has been losing about 118 gigatonnes of ice per year since 2002, while the Greenland ice sheet has been losing an estimated 281 gigatonnes per year.
Sceptical Science
Antarctica is a continent with 98% of the land covered by ice, and is surrounded by ocean that has much of its surface covered by seasonal sea ice. Reporting on Antarctic ice often fails to recognise the fundamental difference between sea ice and land ice. Antarctic land ice is the ice which has accumulated over thousands of years on the Antarctica landmass through snowfall. This land ice therefore is actually stored ocean water that once evaporated and then fell as precipitation on the land. Antarctic sea ice is entirely different as it is ice which forms in salt water during the winter and almost entirely melts again in the summer.
Importantly, when land ice melts and flows into the oceans global sea levels rise on average; when sea ice melts sea levels do not change measurably but other parts of the climate system are affected, like increased absorbtion of solar energy by the darker oceans.
To summarize the situation with Antarctic ice trends:
Antarctic land ice is decreasing at an accelerating rate
Antarctic sea ice is increasing despite the warming Southern Ocean
2014, NASA. Antarctic Sea Ice Reaches New Record Maximum
Editor’s note: Antarctica and the Arctic are two very different environments: the former is a continent surrounded by ocean, the latter is ocean enclosed by land. As a result, sea ice behaves very differently in the two regions. While the Antarctic sea ice yearly wintertime maximum extent hit record highs from 2012 to 2014 before returning to average levels in 2015, both the Arctic wintertime maximum and its summer minimum extent have been in a sharp decline for the past decades. Studies show that globally, the decreases in Arctic sea ice far exceed the increases in Antarctic sea ice.
originally posted by: soficrow
a reply to: St Udio
The land ice undoubtedly has a reason for losing mass...
Uh huh. Or several.
originally posted by: St Udio
originally posted by: soficrow
a reply to: St Udio
The land ice undoubtedly has a reason for losing mass...
Uh huh. Or several.
all I can think of is 'heat'...
unless the 5 dimensional planet Nibiru is also one of the causes
care to put forth a reason or cause(s).... thanks in advance