The Focus forum is now closed.
We're sad to make this announcement because, over the years, the forum has provided fascinating debate on science and technology, and we’ve often printed the discussions in the magazine.
We’d like to thank everyone who’s joined in and made it such interesting reading for fellow forum members and all of us who work on the magazine.
Graham Southorn, BBC Focus magazine
"Those models could be used to predict the melting of the ice. The suggested melting starts around 900 ppm (parts per million)," he said, a level he believes could be reached by the end of this century, unless serious emissions cuts were made.
The Beige Avenger wrote:http://uk.reuters.com/article/idUKTRE58D20U20090914
Check it out...
Hello, just joined and read all the posts with great interest - it is good to know that there are others like myself who are willing to challenge the 'accepted' drivel we are force fed re climate change. I have not very much to add to this debate but as an amateur weather nut, I have the following observation:-
I have compiled official met office weather data for my area from 1921 to the present, nearly 90 years worth of good data.
I have 2 main conclusions (admittedly relevant perhaps only to my area (South Wales coast) but interesting none the less)
1/ That there is nothing new under the Sun - it has meteorologically speaking all happened before.
2/ That whilst there is undoubtedly a very slight upward trend in the MEAN temperature (derived from the daily average highs and average lows) this upward trend is shown to be due not to any increase in the average maxima (indeed these are in the decline) but due entirely to the average minima showing a relatively large increase.
In other words, it appears that generally whilst our days are ceasing to warm as much as they have done, our nights are not cooling as much as they have done and that the very slight increase in mean temperature is due entirely to this.
I propose that if this local trend were found to repeat itself in other locations then the global mean temperature increase could be due to this phenomenon.
Have any readers any ideas as to how or why this might be? (Apart from CO2 levels and/or cloud cover preventing the normal night-time radiation escape) It seems that even on clear, high-pressure winter nights, there is less cooling going on than there used to be.
Flakkarin wrote:I believe climate change is man made because carbon dioxide is a greenhouse gas.
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