This past weekend, I was talking to a National Park Service biologist about various environmental and ecological matters, and he was telling me that Zion National Park, until the last snowstorm, was the driest in either in recent recorded history or in more distant history as revealed by tree ring data. Even after six inches of snow, it’s still incredibly dry. In addition, the yearly average temperatures at Zion were something like seven degrees above average for the entire past year, a differential that was unprecedented. While I can’t recall all the species, he also listed a number of them that had literally vanished from Zion seemingly because of higher ambient temperatures over the last decade, again numbers that were unprecedented.
For the last two weeks, high temperatures here in Cedar City have been in the low sixties [Fahrenheit]. Most winters, in February, we’re lucky to get into the high thirties for a day or two. So far this winter, the high temperatures are running 25-35 degrees above normal for a longer period than ever recorded in the 160 years for which there are records.
In northern Utah, they’ve had to cancel ice-fishing, because the ice is too thin to support even single individuals in most places. Utah lakes, once too cold to allow wide-spread algae blooms, are now subject to toxic algae.
Yet parts of the east and especially the southeast, are seeing, intermittently, colder bouts than usual. Yet both patterns are the very predictable results of global warming, because the arctic is considerably warmer every year than previously, which weakens the winds that, in the past, kept colder air farther north.
In Europe, something like thirty percent of ski areas that used to exist thirty years no longer do because they’re too warm for natural snow or even to retain sufficient artificial snow.
Yet, as one skeptical geologist I know has said, “These temperatures aren’t anything new. The planet’s been warmer than this a number of times before.”
And he’s right about that. What he doesn’t want to look at is that only a handful of times has the climate changed as swiftly as it is now – and all of those times resulted in massive extinctions. The January 11th issue of New Scientist offered an article dealing with the extraordinary heat in Australia along with projections about how current trends will make large sections of the earth virtually too hot for unprotected humans to survive there in little more than a generation.
Yet the debate over what is causing global warming goes on. And it’s a meaningless debate, because, regardless of cause, the earth is warming all too fast. The real question isn’t just causal, but what we can and should do to deal with it. Already, we’re losing chunks of seacoasts all over the world to rising sea levels, and with over 40% percent of the world’s population within sixty miles of the ocean [and in the Asian-Pacific region 73% of the people live less than 30 miles from the ocean], just dealing with protecting all that real estate – or moving buildings and people – represents a huge resource commitment.
One way or another… our children and grandchildren will pay for it.