Showing posts with label double rainbow. Show all posts
Showing posts with label double rainbow. Show all posts

Thursday, December 3, 2015

Moment of Pure Beauty on a Horrific Day

It's hard not to feel depressed or hopeless when terrible things happen, when people do horrible things to those around them, and when innocent people die needlessly. The latest of far too many attacks hit close to home, near where I grew up, and where I still have connections. 
I have no profound words or insights, there have been plenty of such discussions on the social media that I follow. I do hope that some action will finally be taken to prevent future massacres. It's so easy to feel hopeless.
Sometimes, the Earth presents us with such beauty that we can forget the evil for a few moments. It was raining today, a blessing in itself after four years of lingering drought. The sky seemed to be completely overcast, but out west, the light from the setting sun found a path through the clouds, and for a few short moments we had a spectacular rainbow, a double bow that extended across the sky. We don't really get a lot of them around here (given the general rarity of storms, period), so this was  kind of an exceptional moment.
I don't know where our sense of beauty comes from, but there is something so pleasing about the spectrum of color that appears when sunlight is refracted through water droplets. It's high in the sky, and seemingly distant and unattainable, kind of like the ideals of being human. There is a sort of perfection we can hope to reach as individuals and as a society. I don't mean this in the sense of some religious belief that is "better" than the belief of someone else. There's too much conflict there. I mean it in the sense that we might one day find a way to treat each other with kindness, respect and equality, a recognition that we have a limited time in our own existence to make the world a slightly better place.
It's maybe kind of odd to think of it this way, but in geology we describe a form of "perfection". We call it a "graded stream". Rivers flow to the sea. The longer a river exists, the more it molds a landscape so as to achieve the most efficient flow, using the least amount of energy. If there is an obstruction, a landslide, say, or a dam, such things are ultimately removed by the erosive force of the fast-moving water. If there are pools, the stream slows, and dumps sediment in such a way as to fill in the gaps. As long as the water moves, the river approaches a form of physical perfection, with a channel that transports water to the sea in the smoothest manner possible (subject to the laws of physics). Perfection is never reached, because landslides and earthquakes will always happen, but the river works through these interruptions. It never stops changing the channel through which it flows.

Humans can never be perfect. But we can change the world we live in. We can choose to be the disasters, the landslides and other catastrophes, or we can be part of the constant never-ending flow that smooths out the imperfections. We can take away the hate. It takes patience, courage, and empathy for others.

Sunday, February 8, 2015

A Very Long Dry Spell (40 Days +) Ends. Please, More Days Like This!

What does it take to make a Walmart parking lot pretty? Atmospheric phenomena is a big help. I spend as little time as possible at Walmarts of any kind, but there was a fast food outlet nearby, and we wanted to eat something before shopping at WinCo, a store that apparently treats their employees with a bit more respect (they own it). Politics aside, for four minutes we were treated to a spectacular rainbow.
The rainbow was a particularly welcome one. It came on the heels of a real gully-washer today, which capped three days of rain, the first precipitation following an unprecedented dry spell of more than forty days. We had not a drop of rain during the entire month of January.
The three-day long stormy period provided a good example of something that scientists and statisticians like to describe as the difference between accuracy and precision. Weather forecasting has become somewhat more precise and accurate over the years, but it is sometimes more of one and less of the other. The forecast called for 0.64 inches of rain on Friday, 0.02 inches of rain on Saturday, and 0.43 inches of rain on Sunday. These values, to the nearest one-hundredth inch, are quite precise.
What actually arrived in my rain gauge was 0.14 inches on Friday, 0.43 inches on Saturday, and 0.98 so far today on Sunday. That means that the prediction was very precise, but not so very accurate. But since the precipitation amounts ended up on the high side, I couldn't be happier. Of course, no insult towards meteorologists is implied; they would actually give their predictions as a range of possible values rather than the precise numbers apparently demanded by Intellicast.
What does this mean in terms of California's crippling drought? Not as much as we could hope. The 1.55 inches of precipitation brings my local amount for the rain year to over 10 inches. 12 inches would mean an average year, a wonderful result on paper. But the problem is that getting normal precipitation here in the Great Valley doesn't mean all that much. That water helps by soaking into the soil and replenishing the groundwater to some extent, but the most important source of water in California is the Sierra Nevada snowpack. And the snowpack is in bad shape, at only about 25% of normal.

The problem is that these wet storms have been coming out of the tropics. The storms drop a fair amount of rain, but they are warm storms (temperatures this week have been in the 70s!). We need a couple of heavy-duty arctic storms, and those have so far failed to materialize. A persistent high pressure dome settled over California for all of January, diverting the arctic storms north over Canada and then down into New York and Boston. They've taken all our snow! I heard on the radio today a government official in charge of snowplows in an eastern city, and he said they were running out of places to put the plowed snow. A suggestion? Put the snow in trucks and trains and send out to the Sierra Nevada. We could use it.
In the meantime we very much enjoyed one of the most vivid rainbows I've ever seen in our fair city.