ron vrooman wrote:
Climate change as in el Nino and la Nina; only global as we are all together on our spaceship. Glaciers are disappearing so it must be warmer where they are.
And yet depending on the findings it could be that the glaciers are redistributing and gaining ice...
Many balked at the NASA findings in this article..
Most research shows the melt rate is so high that the continent is indeed losing ice. But in 2015, a group of NASA scientists published a controversial study that found Antarctica was instead gaining ice. The NASA team combined space- and land-based measurements and found so much snow dropping in East Antarctica that even with drastic melting elsewhere, the continent was adding some 80 billion tons of ice annually.
It contradicted prominent previous findings — including reports from the U.N.’s Intergovernmental Panel on Climate Change. The result drew global headlines and excited climate change skeptics. That’s despite warnings from the study’s lead author, NASA Goddard’s chief cryospheric scientist Jay Zwally, who predicted that melting would outpace increased snowfall in a decade or two... what do we believe you ask???
In West Antarctica, you’re looking at bigger changes over a small area,” Zwally says. “And in East Antarctica, you’re looking at smaller changes over a much bigger area.”
Zwally, himself a veteran glaciologist, says the differences stem from how teams treat the density of the ice sheet, which is thousands of feet thick, as well as how the teams analyze the slow movement of bedrock under the ice. According to Zwally, on-the-ground studies have shown that Antarctica has seen unusually heavy snowfall over the last 10,000 years. That weight burdens the ice sheet and gradually makes the ground beneath it sink. These changes have to be accounted for, he says.
“It’s a debate over the methodology, and their methodology is primitive,” Zwally says. “It’s what we were doing 15 years ago, but we’ve advanced beyond that state. We no longer have to guess at that density.”
Methodology equates to programmed data used to achieve the result needed, yes?? So who knows, right?? Why, Mother Nature of course and the cyclic changes she administers as needed...