(Original post by MrsJones)
After trying to find max and average temps for london for the past few decades I understand why it's easier to spout off theorisms rather than work from accurate data. I too have given up.
Fear not any more Mrs Jones...amazingly, just by chance, when I had too given up on finding any data to show this one way or another, I come across something completely unrelated to what I was looking for at the time...this things was mean temperatures and mean rainfall data by month, season and year for Engalnd and Wales for every year from 1914 to this year. (I'd prefert it if the data went back further and was perhaps for the whole world, but at least we have it for a significant time.....over 90 years aint't too bad and I'd guess the UK is pretty typical of trends in Western Europe (though obviously not in actual temperatures
Here is the link:
Anyway, I said that the general trend was for increasing temperatures, with 8 of the hottest 10 years being recent (or words to that effect)
Well, the 10 hottests years, based on mean tempertaure were, in order and in Celsius:
I think you may agree that the recent trend is for temperature increase, 6 out of the last 10 years are in top 10 highest average temperatures. Three of the last 5 years are in the top five.
And while this doesn't prove the trend I spoke about, it does back up somewhat what I was saying. If this trend does continue it will be a sure sign. Now I don't claim to be a meterlogical expert, but some people who do claim to be one are saying the same thing: that this trend is a sign for global warming. And from all the evidence we have there is a strong case for global warming being casued, either in part or in full, by the Greenhouse effect.
I'm sure that if we were to look for similar data in other countries....which I'd imagine is even harder to find than this, or for data further into the past (just for the record, when was the last time the Thames froze over? I Tudor times it happened nearly every year and they had winter fairs out on the ice), then we would find similar and more long term patterns.