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Member Run Boards >> Environment >> The greening of Antartica
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Message started by The_Barnacle on May 20th, 2017 at 10:52am

Title: The greening of Antartica
Post by The_Barnacle on May 20th, 2017 at 10:52am


Scientists studying moss in an area spanning 640 kilometres have found a sharp increase in growth over the past 50 years, said the report in the journal Current Biology.

“Temperature increases over roughly the past half century on the Antarctic Peninsula have had a dramatic effect on moss banks growing in the region,” said co-author Matt Amesbury, of the University of Exeter.

“If this continues, and with increasing amounts of ice-free land from continued glacier retreat, the Antarctic Peninsula will be a much greener place in the future.”

Five moss cores — or column-like samples drilled from the Earth — showed evidence of what scientists called “changepoints,” or points in time after which biological activity clearly increased.

Areas sampled included three Antarctic islands — Elephant Island, Ardley Island, and Green Island — where the deepest and oldest moss banks grow, said the report.

“This gives us a much clearer idea of the scale over which these changes are occurring,” said Amesbury.

“Previously, we had only identified such a response in a single location at the far south of the Antarctic Peninsula, but now we know that moss banks are responding to recent climate change across the whole of the Peninsula.”

http://www.news.com.au/technology/environment/climate-change/antarctica-is-greening-due-to-global-warming/news-story/13c264efb1eef884bef1d155f0707bd0

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 11:05am
Yep. Too funny. Three islands outside the Antarctic Circle have mosses growing.

In the Northern Hemisphere mosses grow on the North side of the trees, that is towards the cold. Here they grow because it is nice and toasty?

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 11:13am
Yeah, would expect more moss to be growing as Antarctica warms.

In the NHemisphere moss grows on the moist side of trees, the side away from the sun.

Title: Re: The greening of Antartica
Post by The_Barnacle on May 20th, 2017 at 11:26am

Jovial Monk wrote on May 20th, 2017 at 11:13am:
Yeah, would expect more moss to be growing as Antarctica warms.

In the NHemisphere moss grows on the moist side of trees, the side away from the sun.


Also trees only grow in much warmer environments than Antactica. lee has got it hopelessly wrong again.

lee's ridiculous post just confirms to me that he is a troll.

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 11:35am
Yup, a troll who tries to cover up facts, including:


Quote:
sharp increase in growth over the past 50 years


Those past 50 years were a period where the sun has been relatively quiet.

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 11:43am

Jovial Monk wrote on May 20th, 2017 at 11:13am:
In the NHemisphere moss grows on the moist side of trees, the side away from the sun.



Yes. Now why do they grow in full(?) sun North of the Antarctic Circle. ie Not Antarctica?

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 11:46am

The_Barnacle wrote on May 20th, 2017 at 11:26am:
Also trees only grow in much warmer environments than Antactica. lee has got it hopelessly wrong again.



Did you understand the bit about the islands being outside the Antarctic Circle? ;)

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 11:54am
“Full sun?” Who was the troll saying the sun hardly hit the polar seas?

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 12:03pm
From the paper -

" Mass accumulation (r2 = 0.82, p = 0.013) and growth rates (r2 = 0.75, p = 0.026) are significantly positively related to latitude, but since latitudinal temperature variability over our study area is not significant (Figure 1; [23, 24])"

"We found significant changes in all proxies (carbon isotope discrimination, microbial productivity, moss bank vertical growth, and mass accumulation) and at all sites, reflecting increased biological activity across the length of the AP over the past ca. 50 years (Figures 2 and 3). The precise timing of these shifts varied, but the prevalent pattern of change indicates a widespread biological response to increasing temperature. "

So there is very little in the way of temperature increase, but it is the temperature increase that done it. R-i-i-g-h-t.



Just love those temperature trends.

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 12:04pm

Jovial Monk wrote on May 20th, 2017 at 11:54am:
“Full sun?” Who was the troll saying the sun hardly hit the polar seas?


Try again. The Islands are not polar. The same as Southern Greenland. ;)

Title: Re: The greening of Antartica
Post by The_Barnacle on May 20th, 2017 at 12:06pm
So we have an article about the Antarctic peninsula showing how much is warming and lee makes a pretty pathetic attempt to obfuscate by turning it into a discussion about trees in the northern hemisphere.

You are fraud lee

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 12:16pm

The_Barnacle wrote on May 20th, 2017 at 12:06pm:
So we have an article about the Antarctic peninsula showing how much is warming and lee makes a pretty pathetic attempt to obfuscate by turning it into a discussion about trees in the northern hemisphere.



Nope. Not turning into a discussion on trees. Just trying to get you to use logic.

I should have known it would be a fail. ;)


Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 12:21pm

lee wrote on May 20th, 2017 at 12:04pm:

Jovial Monk wrote on May 20th, 2017 at 11:54am:
“Full sun?” Who was the troll saying the sun hardly hit the polar seas?


Try again. The Islands are not polar. The same as Southern Greenland. ;)

I know, they are almost tropical  ::) ::) ::)

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 12:23pm
What do you think this means, Lees?


Quote:
latitudinal temperature variability over our study area is not significant


Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 12:23pm

Jovial Monk wrote on May 20th, 2017 at 12:21pm:

lee wrote on May 20th, 2017 at 12:04pm:

Jovial Monk wrote on May 20th, 2017 at 11:54am:
“Full sun?” Who was the troll saying the sun hardly hit the polar seas?


Try again. The Islands are not polar. The same as Southern Greenland. ;)

I know, they are almost tropical  ::) ::) ::)


Jeez. Are you that stupid. Nothing between polar and tropical? Sounds like the gap between your ears.

Edit: But yes they are sub-Antarctic. ;)

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 12:38pm

Jovial Monk wrote on May 20th, 2017 at 12:23pm:
What do you think this means, Lees?


Quote:
latitudinal temperature variability over our study area is not significant



"In geography, latitude is a geographic coordinate that specifies the north–south position of a point on the Earth's surface. Latitude is an angle (defined below) which ranges from 0° at the Equator to 90° (North or South) at the poles. "

Source: wiki

So there is not much variation in temperature N-S in that location. So that the temperatures are relatively uniform in the studied area.

So if you looked at the map the temperature trends are -

0.35º +/-0.46ºC/decade
0.56º +/-0.43ºC/decade
1.01º +/-1.42ºC/decade

So the uncertainty is wider than the reported temperatures, except for one.

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 12:40pm
I thought the  ::) ::) ::) was a clue as to how I meant that.

Now about the question I asked?

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 12:42pm
So there isn’t much temperature variation between the islands.

How does that indicate no temperature increase?

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 12:57pm
I guess that is too hard for Lees to answer.

The islands are getting warmer and moss is growing faster. That is not hard to grasp, dunno why it needed two pages.

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 4:21pm

Jovial Monk wrote on May 20th, 2017 at 12:57pm:
I guess that is too hard for Lees to answer..



Nope. I have been out.  I didn't know I was supposed to answer according to your timeline. ;)



Jovial Monk wrote on May 20th, 2017 at 12:42pm:
How does that indicate no temperature increase?



Where did I say there was no temperature increase?

The only one to show a temperature increase above the noise has been essentially flat since about 1955.

Title: Re: The greening of Antartica
Post by Unforgiven on May 20th, 2017 at 4:25pm

Jovial Monk wrote on May 20th, 2017 at 12:57pm:
I guess that is too hard for Lees to answer.

The islands are getting warmer and moss is growing faster. That is not hard to grasp, dunno why it needed two pages.


Lee is a dedicated denier.

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 4:26pm
Yeah, you said there was no temperature increase  ;D ;D ;D ;D ;D

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 5:09pm

Jovial Monk wrote on May 20th, 2017 at 4:26pm:
Yeah, you said there was no temperature increase  ;D ;D ;D ;D ;D


I would ask you to quote where, but even that simple task is beyond you. ;)

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 5:18pm
Just somewhere ^^^

Title: Re: The greening of Antartica
Post by lee on May 20th, 2017 at 5:43pm

Jovial Monk wrote on May 20th, 2017 at 5:18pm:
Just somewhere ^^^


Yes. i knew that oh so simple task was beyond you.

Of course it would have been another lie from you. But I have lost count.

Title: Re: The greening of Antartica
Post by Jovial Monk on May 20th, 2017 at 5:44pm



The_Barnacle wrote on May 20th, 2017 at 10:52am:
Scientists studying moss in an area spanning 640 kilometres have found a sharp increase in growth over the past 50 years, said the report in the journal Current Biology.

“Temperature increases over roughly the past half century on the Antarctic Peninsula have had a dramatic effect on moss banks growing in the region,” said co-author Matt Amesbury, of the University of Exeter.

“If this continues, and with increasing amounts of ice-free land from continued glacier retreat, the Antarctic Peninsula will be a much greener place in the future.”

Five moss cores — or column-like samples drilled from the Earth — showed evidence of what scientists called “changepoints,” or points in time after which biological activity clearly increased.

Areas sampled included three Antarctic islands — Elephant Island, Ardley Island, and Green Island — where the deepest and oldest moss banks grow, said the report.

“This gives us a much clearer idea of the scale over which these changes are occurring,” said Amesbury.

“Previously, we had only identified such a response in a single location at the far south of the Antarctic Peninsula, but now we know that moss banks are responding to recent climate change across the whole of the Peninsula.”

http://www.news.com.au/technology/environment/climate-change/antarctica-is-greening-due-to-global-warming/news-story/13c264efb1eef884bef1d155f0707bd0


Just thought I would bring this back to the front.

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