On 14/12/2019 14:50, Martin Gregorie wrote:
> Global averages say that 10,000 years BC was about 1 C colder than the
> Little Ice Age in the 1600s.
> > The only warmer period since then was 7500 - 3500 BC which was a whole 1
> C warmer that the Little Ice Age.

I think not.

There have been three periods warmer than today since the last ice age -
the Holocene optimum, the Roman warm period and the mediaeval warm period.
Of course if you cherry pick the right proxies you can make them
colder...but the anecdotal evidence is there.

It depends which wiki articles you read. The ones that have been
'efdited' by climate activits differ markjedly from teh onew with real
source data..


> After that the global temp declined slowly until the Little Ice age and
> then stayed constant until 1900.
>

No, it did not.

https://upload.wikimedia.org/wikipedia/commons/c/ca/Holocene_Temperature_Variat
ions.png

shows a reasonable approximation. Note hopw all the proxies differe wildly.

> In the 100 years since then we've had a 1 C global rise - by far the
> fastest change in the last 20,000 years.

Utter rubbish.

Look at te graph. +- 1°C is pretty normal for most prioxies

And none of the proxies would show that sort of rise in <100 years EVEN
IF IT HAD HAPPENED.

They aremt that high resolutin. On;y modern themoter and satellite data is



  This*should*  be expected to
> raise rainfall because of increased evaporation from seas, lakes and
> especially [*] transpiration from trees combine with warmer air being
> able to contain more water vapour.
>

No, Climate change is reposnible for drought, snow in the sahara, floods
in the sahara, more ice in antaractica, ice melting in antarctica.

In fact there is nothing bad that climatete change is not resposble for.

Its better than God.




> [*] recent work in the Amazon has shown that the transpiration water
> vapour release rate by trees vastly exceeds the evaporation rate from
> seas and freshwater. Both are, of course, temperature-dependent rates.

Of course there is a lot more sea.....


And evpaoration cools the planet.
Transfers the heat to above te CO2 where it radiates out to space, and
the warm wet air turns to ice snow and rain and cools it even more...


--
If I had all the money I've spent on drink...
..I'd spend it on drink.

Sir Henry (at Rawlinson's End)

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