Record keeping on global worming?

Question

When did record keeping start on global worming? What was
the warmest year / years? What was the temperature then and now? Can you give me a wed sight? Thanks for any help you
can offer.

Answer 1

You might find this web site interesting.

http://www.lakepowell.net/sciencecenter/paleoclimate.htm

The geological record shows that the Earth is normally hotter than it is now. For about 80 million years, during the Cretaceous and Tertiary periods the Earth's average global temperature was around 22ºC, compared to 14ºC now. For about 55 million years during the Triassic and Jurassic periods the Earth's average global temperature was again around 22ºC. For a brief million or so years during the Permian period the Earth's average global temperature was above 23ºC. For about 25 million years during the Devonian and Silurian periods, the Earth's average global temperature was again around 22ºC. For about 50 million years during the Cambrian and Ordovician periods the Earth's average global temperature was around 22ºC. There were four major Ice Ages during that time span, we are climbing out of one now.

Answer 2

Instrumental record keeping dates back to 1659, this is the data set known as HadCET and is the Hadley Centre's Central England Temperature record (The Hadley Centre is part of the Meteorological Office in the UK).

For the next couple of hundred years instrumental record keeping spread around the globe. Complete global data dates from apporox 1880.

Using a variety of techniques, but primarily ice core sampling, the climate record can be extended back 800,000 years. Beyond this different techniques are used such as oxygen isotope analysis, this allows us to extend the climate record right the way back to the emergence of multi-cellular lifeforms some 542 million years ago.

The further back you go the less reliable the data. In terms of a few hundred years the accuracy is to within about a hundredth of a degree Celsius. By the time you've gone thosands of years back the accuracy is to within about one tenth of a degree, beyond ice core analysis it's accurate to about one degree.

Globally the wamest years on record are 2005, 1998, 2002, 2003, 2006, 2004, 2001, 1990, 1995, 1999. If you include partial years then 2007 is the warmest on record.

The ave global temp so far in 2007 is 14.763°C, just ahead of 2005 which was 14.759°C.

It's unreliable to compare temps from one year to the next as any single year could be anomalous. If we take the average for the 10 years to date then the figure is 14.608°C, this compares with the 10 year average from 100 years ago of 13.767°C.

Here's the data in spreadsheet format - http://profend.com/temporary/HCGWCCR-TempAnoms1880-2019.html

Answer 3

Proxy indicators like tree rings, ice core samples, and ocean sediment can give us very close temperature readings going back before the existence of man.

These indications show us that the Earths climate always changes regardless of man or his SUV.

Answer 4

The first time that global warming was recorded was in the 1930's. 2006was recorded as the hottest year.

Answer 5

record keeping on the weather really has not been all that great period. i think we need to look for natural aids to help us such as trees, rocks, and different layers of soil. such as the grand canynon. fossils help too.

Answer 6

I love to question people about this subject..they didn't have accurate record keeping and accurate thermometers years ago..it also depends where the thermometers were located..there are still a lot of unanswered questions

Answer 7

Those worms have been burrowing down in the Earth bringing back more and more magma everyyear. It will become unbearbly hot if the global worms continue to burrow down.