Weather – the current state of the atmosphere with respect to heat or cold, wetness or dryness, calm or storm, clearness or cloudiness.
Climate – the average course or condition of the weather at a place over a period of years as exhibited by temperature, wind velocity, and precipitation.
I hate to insult your intelligence if you already had a grasp of the two concepts above, but unfortunately too widely in the news at present, I see a lack of basic understanding of these simple words that needs to be addressed.
See, a couple of interesting things are happening in North America this week. First, two snowstorms have hit the east coast of the USA, dumping an all time record amount of snow on places like Washington DC. At the same time, the Winter Olympics in Vancouver is at risk due to a lack of snow there.
The first item above has been picked up pretty quickly by those who deny climate change to try to show that climate change is all a hoax due to the fact that a single weather event has occurred. The problem the deniers have is apparently a lack of understanding of the terms weather and climate, accompanied by a failure to understand the science of thermodynamics. I can possibly excuse the latter, provided they don’t attempt to attack it simply due to a failure to understand it, but I cannot excuse not level of stupidity that is required to treat the terms weather and climate as interchangeable.
The current weather outside is an example of nothing unless it is joined over a long period of time by similar weather events that form a trend which may then demonstrate something in relation to the climate at a location. To suggest otherwise is analogous to seeing a single bird flying through the air and declaring it as proof that gravity no longer exists.
Furthermore, the increased incidence of big freak snowstorms are exactly the kind of evidence that supports climate change theory. A discussion of climate change and how it will almost certainly manifest itself (thank you again, J Willard) is covered in some detail here (starting in paragraph 7). If you don’t want to read it all, I will summarise for you: heating of the atmosphere due to anthropogenic climate change will manifest itself as greater weather chaos, not as similar changes in weather all over the world.
The example we see at present in North America is an example of greater chaos in weather. Note, however, that nether I or any of the other climate change believers that I know about have made the claim that the lack of snow for the Winter Olympics in Vancouver proves our case for anthropogenic climate change. We haven’t done this because it would not be supported by a reasoned scientific evaluation of the facts. Vancouver is actually a pretty warm and wet area as far as places that receive regular winter snow are concerned. This year’s lack of snow at this time, while regrettable, is not particularly uncommon. Until climate change really kicks in, organisers should probably stick to the continental divide if they want guaranteed dry fluffy snow for their tv events.
So, despite its high profile as an event where we could whip up lots of frenzy and possibly recruit people to our side of the argument, we on the side of science haven’t done so. But you decide for yourself who the fanatics are.