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The Forum > Article Comments > Climate change is here despite denial > Comments

Climate change is here despite denial : Comments

By Lyn Bender, published 4/2/2014

Seems it never rains in Southern California. But California Dreamin' has become a California Dryin' nightmare and many are praying for the drought to end.

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Nutter
Quote
¨Just prove the link between human activity and warming.¨
And
¨Sufficient will be, just one peer-reviewed paper¨

here is one:-

http://www.pnas.org/content/early/2013/09/10/1305332110.abstract

You could also try googling

human influences on the thermal structure of the atmosphere
Posted by warmair, Wednesday, 5 February 2014 11:25:36 AM
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Warmie gives a little lecture on the Photoluminescence of CO2. However warmie ignores saturation and log effect of CO2 which means any capacity of CO2 to 'warm' has largely been exhausted.

Actually warmie is well aware of the of the log effect of CO2 as are the scientists. Saturation is in fact not as simple as you would like to make out. As the concentration of CO2 increases so does its ability to absorb new wave lengths.

¨Warmie also ignores 2 other properties of CO2; firstly at Earth temperatures the radiation leaving the surface is not absorbed by CO2 but by water; a simple Modtran analysis shows that when water is present CO2 does not absorb ANY radiation leaving the surface; CO2 only absorbs when there is no water:¨

Another typical example of trying to mislead people. While it is true there is some overlap in the specific wave lengths absorbed by water vapour and CO2 it is by no means all. More importantly as altitude increases the amount of water vapour in the atmosphere dramatically falls (something to do with it falling out of the sky). Co2 on the other hand remains well mixed in the atmosphere and becomes significant at height. At height CO2 concentrations still remain around 400 ppm, whereas water vapour has dropped below 5 ppm.
Posted by warmair, Wednesday, 5 February 2014 12:33:28 PM
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Oh Dear, Oh Dear !
Still arguing about the wrong problem !
Posted by Bazz, Wednesday, 5 February 2014 2:20:58 PM
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warmie goes to the big guns, a paper by Santer et al which defines the AGW signal as Tropospheric warming and Stratospheric cooling; neither is happening;

Troposphere, RSS lower troposphere measurement since 1997:

http://www.woodfortrees.org/plot/rss/from:1997/trend

Stratosphere; the Stratosphere is interesting; this graph from RSS shows why:

ftp://ftp.ssmi.com/msu/graphics/tls/plots/rss_ts_channel_tls_global_land_and_sea_v03_3.png

The high peaks represent the dramatic temperature effect of volcanic eruptions which throw debris into the atmosphere; these warm the Stratosphere by absorbing solar radiation. The most recent eruption was Mt Pinatubo in 1991. The heating effect usually lasts about a year and when the debris settle normal Stratospheric temperature resumes. As the graph shows after the sudden decline in temperature after Pinatubo there has been no cooling and indeed a slight warming since about 1995.
Posted by cohenite, Wednesday, 5 February 2014 2:40:33 PM
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Warmair you do have a great sense of humour. The first sentence of the paper you claim links human activity to warming contains the words 'modelling predicts'. Of course modelling is a human activity and it does predict warming. Lol.

But this paper is mostly based on assumptions and not actual events. Assumption based evidence proves nothing. Try again... seriously.
Posted by imajulianutter, Wednesday, 5 February 2014 3:17:58 PM
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Warmair. "current climate models are highly unlikely to produce this distinctive signal pattern by internal variability alone"

Just answer Imajuliarnutters' challenge without reference to the 'models' . We all know the reliability of 'the models', how about data?
Posted by Prompete, Wednesday, 5 February 2014 3:57:30 PM
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