“The Ice at the End of the World – An Epic Journey into Greenland’s Buried Past and our Perilous Future” by Jon Gertner, Part II

This post honors the International Geophysical Year. The wonderful IGY “Planet Earth” documentary series made me decide (at age 13) to become a scientist. My work never resembled that of the IGY, but the inspiration was invaluable.

(See October 14 for review of Part I.)

Part II of The Ice at the End of the World is entitled “Investigations”. It begins in 1949, the year I was born. I grew up in the Fifties, with the Cold War looming. As geophysical research (interrupted by the Depression and World War II) resumed, it was driven (or at least financed) by the perceived military need to guard against aggression from Russia across the frozen North Pole.

So much had changed during the almost 20-year hiatus in research enforced by the Depression and World War II. Airplanes and helicopters enabled access to remote sites. Better shelters and protective clothing were available.

After WWII, some scientists were still assuming that earth might soon enter a new Ice Age (including “deadly glaciers”), and that cooling might threaten civilization.

A non-scientist reading this account needs to remember that, if you are looking for stability, NEGATIVE feedback is good, and positive feedback is troublesome. An example of climate related positive feedback is the reflectivity of ice. If ice melts, the (less reflective) underlying material absorbs more solar radiation, making the area warmer, so more ice melts. This is the kind of feedback loop that worries climate scientists.

One of the early findings (based on ice core analysis) of the Postwar era was that climate (or at least temperatures) could change SUDDENLY. Some changes shown by ice cores were so abrupt that initially it was thought the data was in error, due to faulty equipment or recording mistakes. Comparisons of multiple cores made it clear that really erratic behavior did happen. Climate scientist James White says “When it comes to climate change, speed kills”. About his early work on climate change, he commented “…I naively thought society would latch onto this and do something about it.”

We’ve known about climate change for a long time. Gertner lists the many scientists and publications that warned of the danger we face.

I, like many scientists of my generation, are now facing the issue translating what we know into public policy. This requires us to learn new ways of acting in society.

Recently, I’ve been asked (as a scientist) whether we are doomed. “Worst case” doomed means the end of life on earth. Sometimes I worry about that. At other times, I think life is highly resilient, and we may make it to a future.

Why haven’t I spoken out, agitated, demonstrated? I really don’t have an answer.

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“The Ice at the End of the World – An Epic Journey into Greenland’s Buried Past and our Perilous Future” by Jon Gertner, Part One

300 pages plus notes, sources, bibliography and index. Some photos and maps.

Part One (Explorations) of this excellent and highly readable book covers the years 1888 to 1931, when wanderlust and scientific curiosity led a handful of explorers to climb up onto the Greenland ice sheet. It was a land so little known that people fantasized about finding an ice free tropical oasis in the middle. Greenland had a small indigenous population that had been there fewer than 1000 years, and was visited by the occasional trader seeking furs and tusks. The first “explorer” was Fridtjof Nansen. Looking at his photo, you see either an intense intellect or a totally fanatic lunatic. Both those attributes were necessary in an explorer of the far arctic.

The indigenous Greenlanders lived around the edges of the island, successfully exploiting natural resources including those of the ocean. Others (outsiders) went there at their peril, learned from the indigenous residents only slowly, and often died, even if they stayed off the mighty ice sheet.

Part 1 of this book ends with the Wegener expedition of 1931. The intention was to establish a research base on the ice, in a central location. The project was dogged by misfortune and ended in the deaths of two scientists. Amazingly, data collected was used to estimate how much worldwide sea levels would rise if the Greenland ice sheet should melt entirely. The answer turned out to be remarkably close to what contemporary scientists now conclude – around 24 feet.

After 1931, the Great Depression and World War II shut down scientific exploration almost entirely, except for strategic military concerns.

Part 1 is the easy part. Part 2, entitled “Investigations”, covers the years 1949 to 2018. I expect this to be frightening. Much as I love science, I think it’s going to be difficult for me to read.