|A composite aerial view of a California hillside contrasting a normal |
winter view (green) and a normal summer view (blonde).
We know California is in a drought now. And yes, it’s pretty bad and looks like it's going to get worse for the foreseeable future.
But can we find out the larger historical context? How often does a drought happen, really? We know that weather records have been kept (relatively accurately) since the mid-1800s. What about before then? How common (or rare) are droughts in California in the long-run?
Today's Search Challenge is an interesting one, because it asks a question you might not think was possible to answer via web searches.
1. Can you find a record of the rainfall in California for the past two thousand years? And what does that tell us about the relative frequency of drought?
In other words, if you CAN find some way to track that rain back into deep history, how often do droughts take place? And how long do they last?
Should we really be worried? Is this just a temporary thing that will be gone soon? Or is this a vision of a future to come?
Search on, dryly!
|A photo taken on the ground near the site pictured above (on Jan 19, 2014). |
All this should be green. It shouldn't look like summertime yet!