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Clouds Boost Arctic Warming More Than Expected

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  Clouds Boost Arctic Warming More Than Expected Sam Wormley <swormley1@gmail.com> - 2015-12-15 20:33 -0600
    Re: Clouds Boost Arctic Warming More Than Expected jimp@specsol.spam.sux.com - 2015-12-16 03:46 +0000
    Re: Clouds Boost Arctic Warming More Than Expected gilber34 <fafa@invalid.com> - 2015-12-15 23:01 -0600
    Re: Clouds Boost Arctic Warming More Than Expected Wally W. <ww84wa@aim.com> - 2015-12-16 07:47 -0500

#539506 — Clouds Boost Arctic Warming More Than Expected

Clouds Boost Arctic Warming More Than Expected
> http://www.reportingclimatescience.com/news-stories/article/clouds-boost-arctic-warming-more-than-expected.html

> Abstract
>
> Infrared radiative processes are implicated in Arctic warming and
> sea-ice decline. The infrared cloud radiative effect (CRE) at the
> surface is modulated by cloud properties; however, CRE also depends
> on humidity because clouds emit at wavelengths that are
> semi-transparent to greenhouse gases, most notably water vapour. Here
> we show how temperature and humidity control CRE through competing
> influences between the mid- and far-infrared. At constant relative
> humidity, CRE does not decrease with increasing temperature/absolute
> humidity as expected, but rather is found to be approximately
> constant for temperatures characteristic of the Arctic. This
> stability is disrupted if relative humidity varies. Our findings
> explain observed seasonal and regional variability in Arctic CRE of
> order 10 W m−2. With the physical properties of Arctic clouds held
> constant, we calculate recent increases in CRE of 1–5 W m−2 in autumn
> and winter, which are projected to reach 5–15 W m−2 by 2050, implying
> increased sensitivity of the surface to clouds.
>
> Citation
>
> Humidity trends imply increased sensitivity to clouds in a warming
> Arctic by Christopher J. Cox, Von P. Walden, Penny M. Rowe and
> Matthew D. Shupe, published in Nature Communications,
> doi:10.1038/ncomms10117
>

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#539525

Sam Wormley <swormley1@gmail.com> wrote:
> Clouds Boost Arctic Warming More Than Expected
>> http://www.reportingclimatescience.com/news-stories/article/clouds-boost-arctic-warming-more-than-expected.html
> 
>> Abstract
>>
>> Infrared radiative processes are implicated in Arctic warming and
>> sea-ice decline. The infrared cloud radiative effect (CRE) at the
>> surface is modulated by cloud properties; however, CRE also depends
>> on humidity because clouds emit at wavelengths that are
>> semi-transparent to greenhouse gases, most notably water vapour. Here
>> we show how temperature and humidity control CRE through competing
>> influences between the mid- and far-infrared. At constant relative
>> humidity, CRE does not decrease with increasing temperature/absolute
>> humidity as expected, but rather is found to be approximately
>> constant for temperatures characteristic of the Arctic. This
>> stability is disrupted if relative humidity varies. Our findings
>> explain observed seasonal and regional variability in Arctic CRE of
>> order 10 W m−2. With the physical properties of Arctic clouds held
>> constant, we calculate recent increases in CRE of 1–5 W m−2 in autumn
>> and winter, which are projected to reach 5–15 W m−2 by 2050, implying
>> increased sensitivity of the surface to clouds.
>>
>> Citation
>>
>> Humidity trends imply increased sensitivity to clouds in a warming
>> Arctic by Christopher J. Cox, Von P. Walden, Penny M. Rowe and
>> Matthew D. Shupe, published in Nature Communications,
>> doi:10.1038/ncomms10117
>>

Duh.

Everybody already knows that clouds effect temperature. 

-- 
Jim Pennino

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#539533

On 12/15/2015 8:33 PM, Sam Wormley wrote:
> Clouds Boost Arctic Warming More Than Expected



shows a lot more unbiased research is needed.

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#539571

On Tue, 15 Dec 2015 20:33:41 -0600, Sam Wormley wrote:

>Clouds Boost Arctic Warming More Than Expected

More "It's worse than we thought."

How long ago was the science "settled?"

Why is the "consensus" continually suprised if they knew it all
decades ago?

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