Is Global Warming man-made or natural? This is always a
controversial debate and also has many hidden interests and political
It appears that the temperature of the atmosphere is rising, but
is it man-made (anthropogenic) as we are officially told? This
seems to depend more on your acceptance of what “authorities” tell you than
hard facts. Remember the Iraq war, and how it pivoted about “weapons of mass
destruction”? Enough said, let me continue to examine the subject.
I have spent many hours trying to find definitive
information and data, but have found it difficult to get to the basis of many of
the claims. It is most interesting to note that, almost without exception,
official (accepted) statistics begin in about 1850AD. The reason for this is
often stated as being because that is date when records started. To a point,
this is not unreasonable, that is until you realise
that for many years scientists have been obtaining temperature records from
several other sources, such as tree rings and ice cores. Some of these are
apparently able to yield good results over many thousands of
So why do official figures start at such a late date?
It does seem rather coincidental that the “Little Ice Age” finished at about
this time and that the Industrial Revolution began. If the "Little Ice Age"
existed then starting the official figures at 1850AD references all the
subsequent data to a cold period. This means that there is an exaggerated
temperature increase and no indication of what had happened in previous
The “Little Ice Age” was the period from about 1450AD to 1850AD
when temperatures, at least in the northern hemisphere, were relatively low and
stable. Yet again, this is controversial within the climate-studying community,
but it has been somewhat accepted for many years, and indeed I recall being
taught about it back in the 1970's. So this era can be thought of as trough
shape in the temperature curve between the aforementioned dates. But what
does the data show? Let's take a look ...
One of the easiest to obtain data sets, and possibly one of
the best sources is Central England Temperatures (CET). This data set
covers the era 1659 to date, and shows a gradual increase in temperature over
I find it intriguing that the British Meteorological Office (Met
Office) state the following at the top of their Central England Temperature
(Hadley Centre for Climate Change) page:
"The monthly series of mean CET begins in
1659 and is currently the longest available instrumental record of temperature
in the world."
The next graph shows even less data. It is the mean minimum
temperature over the years 1878 to 2007. Again, why? This is a mere 127 years
worth of data out of 346 years, or to put it another way, only a little over a
third of the available data!