100 years would actually be a fairly long climate record. Many stations are much less than that. Most people don't know that the averages for high and low are based on a 30 year period. Currently, the climate normal period is 1970-2000. For the extremes they use the whole record period.Originally Posted by SunMessenger
That being said, your point is right. The world is very old and 100 years is not much data.
If you want to guess what the weather is going to be like next July, then yes, the 30 year normal period is a fairly good indicator. Probably better than 100 million years of data.
So we all know what's causing the wild weather in America, but what about the rest of the world? I'm guessing it has more to do with satellites, internet, and foreign media bureaus than an actual increase in wild weather. 30 years ago who cared about a cyclone in Mozambique? Let alone had any idea where Mozambique was?