Originally posted by Eladar
I suppose that if we get 12 straight months of global cooling you'll be ready to say that global warming does not exist?
I also suppose that the only explanation for the short term heating trend is man made.
If you look at this temperature data [from the above article] set you will see that the global average fluctuates up
and down on the short term...
But the LONG term trend is always up.
That is proof of a long term warming trend. Having all the top ten hottest years in the recent past and having
temperature records broken regularly is one of the signs of such a trend. As these info-graphics clearly show.
This years [and last years] records are due to El Niño which increases the surface area of the pacific covered
with warm water which dumps lots of heat into the atmosphere and raises the worlds surface temperatures.
We have had a strong El Niño which is why this year is breaking records. Although it's now weakening and
likely to be replaced by a La Niña pattern where colder than average waters cover large areas of the pacific
which reduces the global average surface temperature [an effect that has been very common over the last
decade or so even with which we still had almost all the top ten hottest years on record].
However these short term variations are built upon the aforementioned LONG term trend which is inexorably up.
The reason for this is that the Earth is absorbing more heat from the sun than it is emitting.
Which can be clearly measured by satellites, and is a signal so huge as to be beyond dispute.
As the Earth is gaining energy it is warming up. At a rate of heat gain equivalent to multiple Hiroshima sized
nuclear bombs per second, and has been doing so for decades.
That is a ludicrously large amount of energy the climate system has gained [90% of which is going into heating
And that is why this is no little trivial short term trend, but is instead a very real long term trend.
The sheer amount of energy required to heat the Earth's climate system this much is vast. And cannot be caused
by some minor natural temperature fluctuations.