FAIRHOPE — On Oct. 7, a polar explorer and professor at the University of Alabama at Birmingham spoke at the Fairhope Public Library on how climate change being studied in Antarctica impacts …
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FAIRHOPE — On Oct. 7, a polar explorer and professor at the University of Alabama at Birmingham spoke at the Fairhope Public Library on how climate change being studied in Antarctica impacts the Alabama coastline and Mobile Bay.
"31 trips to Antarctica, and I'm still married," UAB Professor of Polar and Marine Biology, James McClintock, said.
McClintock talked about his experiences in Antarctica and some of the scientific observations that point to a rapid change in the climate, such as an unnatural increase in carbon dioxide, decreasing/increasing animal populations and unusually warmer temperatures in the water surrounding the continent.
So, what is happening in Antarctica to cause these effects?
"I didn't realize that I was moving to a region of the planet that is warming so rapidly," McClintock said of when he first visited the Palmer Station on the Antarctic peninsula. "I really wasn't focused on it."
He told a story of how when he first saw a large chunk of a glacier fall into the ocean as it "was a big deal" and several people gathered to watch the then-rare phenomenon.
"When I was at Palmer Station two years ago on my last trip, my most recent trip," McClintock said, "this was happening two-three times a day."
As mentioned earlier, McClintock reassured the audience that the glacial ice melting into the surrounding water does not contribute to sea level rise. He said that it does, however, create a slippery (and melting) slope where there once was an ice shelf barrier between the ice sheets buried deep inland and the warm water.
This is why scientists are concerned about the melting glaciers, McClintock said. The "glacier is a cork" in this scenario.
McClintock also emphasized how the local animal populations were being affected by climate change. He mentioned humpback whales, elephant seals, fur seals, gentoo penguins and chinstrap penguins. All of which are seeing an increase in population numbers and a regional extension of animal communities.
This can be seen as a good thing, McClintock said, but a lot of the species such as the gentoo and chinstrap penguins are being found in areas where "historically they haven't" been seen.
"They're extending their range because it's getting warmer," McClintock said.
Weddell seals, leopard seals and Adelie penguins, according to McClintock, are some examples of species that could be threatened or are currently disappearing due to the melting ice.
These species are considered "sea ice dependent" meaning they use the floating sea ice as sources for survival. The seals use these sea ice islands to birth their pups in a safe place from predators and the Adelie penguins find their food sources from these floating icy islands.
McClintock said the increasing water temperatures will lead to less sea ice. He said the Adelie penguins have already seen a decline in numbers and he believes the two sea ice dependent seals will also eventually be impacted.
Another reason McClintock gave for why the Adelie population was decreasing was due to the air getting warmer and increasing humidity levels, which "ironically" causes it to snow more and later in the year than it used to.
"So, you have these penguins that are genetically programmed to lay their eggs at a certain time," McClintock said. "They show up, lay their eggs and then a snowstorm shows up and buries the eggs."
When the snow melts, most of the eggs don't survive. McClintock said there could be entire generations of Adelie penguins lost if the snowstorms become more frequent.
So, what can be done to slow this change? Is there anything that can be done on a local level?
After McClintock spoke the room was open for questions.
One attendee asked, "is there anything that we as high schoolers can do to change the impact of climate change in our environment?"
In McClintock's book, "Lost Antarctica," he states, "Climate change is real. I have seen it with my eyes. Over the past decade, I've lectured broadly to public audiences on the ecological impacts of climate change, and I have witnessed a change in the public perception of this phenomenon."
McClintock said "ultimately I'm hopeful" about the action that can be taken against climate change in Antarctica. He referred to the progress made with the hole in the ozone, which is no longer growing and is expected to be restored "by mid-century instead of at the end of the century."
The companies that used the chemicals didn't all shut down, McClintock said. Rather, they adapted. They started using different chemicals that didn't destroy the ozone layer after global efforts were taken to decrease the release of environmentally dangerous chemicals.
Why allow the environment to change when something can be done as individuals and companies to better tackle the warming conditions?