Summer chugs merrily along in Tucson, as today marks the 8th consecutive day of temperatures over 100 degrees. This is, admittedly, above normal for the city in late August, but not insanely so. Meanwhile, on the opposite side of the world McMurdo station sits at 10 degrees. A larger swing in temperatures on the Earth is hard to find. But one thing both here and there have in common is lack of precipitation: both are deserts. Tucson sits in the Sonoran Desert, home of the saguaro cactus, roadrunner and Gila monster. Here’s one now:
McMurdo finds itself – along with the rest of Antarctica – insulated from a lot of moisture due to the southernmost jet stream, which surrounds the continent. While Tucson gets on average 12 inches of rain a year, McMurdo gets only 8. Of course, since most of it is snow and since snow is much less dense than rain, this 8 inches of water corresponds to roughly 80 inches of snow. I have been told I might be expected to do shoveling from time to time.
The other similarity between the two deserts is sun exposure. In Tucson, the high altitude the sun reaches in the sky, especially in summer, as well as the endless cloud free days provides ample opportunity to sunburn. Antarctica has to be trickier, and so manages its increased UV exposure via the large hole in the ozone above it.
But it’s not for the similarities that I’m heading there. Tucson has been a great experience all around, and completely foreign compared to the east coast. The mountains loom over the desert floor unlike anything Pennsylvania has to offer, and in them is escape from the oppressive heat and ecosystems that are simultaneously familiar and yet still… western. Roaming through the wilderness of the Catalina Mountains weekend after weekend my first two years always brought great views, interesting discoveries and, from time to time, harrowing experiences. The monsoons that roll in every July are fun to track building from south and are even better to watch boil and rage all around. Of course it’s best when they’re actually where I am, but you can’t argue with the lightning shows that can be seen even a dozen miles away on the other side of the city.
Oh, right… and the sunsets. I really can’t do justice describing them here. If you’ve seen them, you know what I mean and if you haven’t, just take my word on them, ok?
And now, after 5 years of Tucson Arizona, it’s time for something completely different.