Climate study finds human fingerprint in Northern Hemisphere greening

June 29, 2016 by Sean Simoneau, Oak Ridge National Laboratory
Earth system models simulate Northern Hemisphere greening. Figure shows the spatial distribution of leaf area index trends (m2/m2/30yr) in the growing season (April-October) during the period of 1982-2011 in the mean of satellite observations (top), Earth system model (ESM) simulations with natural forcings alone (lower left) and ESM simulations with combined anthropogenic and natural forcings (lower right). Credit: ORNL

A multinational team led by the Department of Energy's Oak Ridge National Laboratory Climate Change Science Institute has found the first positive correlation between human activity and enhanced vegetation growth.

The research team, led by Jiafu Mao of the Ecosystem Simulation Science group in the Environmental Sciences Division, used new environmental data and strict statistical methods to discover a significant human-vegetation interaction in the northern extratropical latitudes, the section of the planet spanning 30 to 75 degrees north, roughly between the Tropic of Cancer and the North Frigid Zone above the Arctic Circle.

"This is the first clear evidence of a discernible human fingerprint on physiological vegetation changes at the continental scale," Mao said.

With the absence of long-term observational records and suitable Earth system model (ESM) simulations, the human "touch" on northern latitude greening had not been previously identified. The team used two recently available 30-year-long leaf area index data sets, 19 ESM simulations and a formal "detection and attribution" statistical algorithm to positively attribute changes in vegetation activity in the extratropical Northern Hemisphere to anthropogenic forcings, or human-induced climate inputs such as well-mixed greenhouse gas emissions.

Leaf area index—the ratio of leaf surface area to ground area—is an indicator of vegetation growth and productivity derived from satellite imaging. The remote-sensing-based LAI datasets and ESM simulations showed a significant "greening" trend over the northern extratropical latitudes vegetated area between 1982 and 2011, indicating increased vegetative productivity.

When Mao and his colleagues accounted for internal climate variability and responses to natural forcings such as volcanic eruptions and incoming solar radiation, it was clear that the greening was inconsistent with simulations of purely natural factors and could only be explained by anthropogenic greenhouse gas forcings, particularly elevated carbon dioxide concentrations.

This anthropogenic greening effect has the potential to alter natural processes on a planetary scale. Continent-wide changes in vegetative productivity, such as those in the study, impact energy exchanges, water use and carbon budgets, accelerating or slowing the pace of climate change.

Accurate detection and attribution of changes in vegetation growth patterns are essential for strategic decision-making in ecosystem management, agricultural applications and sustainable development and conservation. This is the first time the detection and attribution algorithm has been applied to terrestrial ecosystem changes such as leaf area index trends, as it is typically used to study physical climate data such as extreme events and variations in temperature or precipitation.

Mao would like to see these long-term regional- and global-scale observational data sets used in similar studies as they become available. He says the detection and attribution algorithm could be applied to study broad-scale terrestrial ecosystem dynamics, and the framework developed for this study could be used to identify and correct potential errors in next-generation ESM simulations.

The study and its results are reported in the article "Human-induced greening of the northern extratropical land surface" in Nature Climate Change.

Explore further: NASA studies details of a greening Arctic

More information: Jiafu Mao et al, Human-induced greening of the northern extratropical land surface, Nature Climate Change (2016). DOI: 10.1038/nclimate3056

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Garrote
4.6 / 5 (21) Jun 29, 2016
The atmosphere is such a thin little tenuous layer, it's incredible that any could think that humans, who have heavily altered every characteristic of every ecosystem, have no effect. Homo Convertantur is far more accurate than Homo Sapiens.
aksdad
1.8 / 5 (20) Jun 29, 2016
The atmosphere weighs, by the way, 1,383,723,298,255,360 tons (1.383 quadrillion tons) or about 186,989 tons of atmosphere per human. So yeah, the atmosphere is a comparatively thin layer, dozens of miles thick (depending on how you define its limit), measured against the diameter of earth at 7,917 miles. And yeah, humans have an impact. The greening of the planet seems to be a good impact.

And "homo sapiens" works just fine. Humans are indeed the "wise (intelligent) ones" when compared to all other species on earth.
antigoracle
1.3 / 5 (24) Jun 29, 2016
The atmosphere is such a thin little tenuous layer..

Not as thin as the veil of suck-puppets you attempt to hide behind, AGreatWanker. And, just as with the AGW lies, you only fool yourself.
PS: Don't forget your meds.
rrrander
1.5 / 5 (26) Jun 29, 2016
Even if there were more green coverage, the global warming kooks would find a way to spin it negative.
malapropism
4.8 / 5 (24) Jun 29, 2016
@antigoracle
Not as thin as the veil of suck-puppets you attempt to hide behind, AGreatWanker. And, just as with the AGW lies, you only fool yourself.
PS: Don't forget your meds.

While I am aware of prior vitriolic comments passed between you and others on this forum although I tend to skip over the majority of them in favour of reading comments that might be interesting and/or useful, there seems no good rationale for leading your commentary to this article with insults of this nature towards other commenters. I get that you may be harboring ill-feelings against some others here but in this case nobody appears to have invited these insults by commenting against you. So why do you do this?
jeffensley
1.3 / 5 (15) Jun 30, 2016
It would be interesting to know how this changes the albedo. A cursory glance at the graphic suggests it should result in an increase. Of course it may be a draw since duration of snow cover is decreasing.
HeloMenelo
4.3 / 5 (19) Jun 30, 2016
The atmosphere is such a thin little tenuous layer..

Not as thin as the veil of suck-puppets you attempt to hide behind, AGreatWanker. And, just as with the AGW lies, you only fool yourself.
PS: Don't forget your meds.


Now bonobo, you don't want me to pull up the article where you admitted to having sockpuppets and then caught in trying to cover up your lies now do you.... monkey wants bannanas.. :D
HeloMenelo
4.6 / 5 (19) Jun 30, 2016
@antigoracle
Not as thin as the veil of suck-puppets you attempt to hide behind, AGreatWanker. And, just as with the AGW lies, you only fool yourself.
PS: Don't forget your meds.

While I am aware of prior vitriolic comments passed between you and others on this forum although I tend to skip over the majority of them in favour of reading comments that might be interesting and/or useful, there seems no good rationale for leading your commentary to this article with insults of this nature towards other commenters. I get that you may be harboring ill-feelings against some others here but in this case nobody appears to have invited these insults by commenting against you. So why do you do this?


because he and his 30 odd socks is paid by big oil to brag about his dumbfounded knowledge on climate change for over a decade now, this monkey will do anything to please his big fat oil boss.. we can go into some more detail if you'd like :)
antigoracle
1.5 / 5 (25) Jun 30, 2016
OH NOSE, da greening...DA GREENING, it's going to result in too much oxygen and we'll all die of rust.
HeloMenelo
4.6 / 5 (18) Jun 30, 2016
too late, that capsule brain's already got too much oxygen, but we all know that's because of something else... ;)
TrollCondensate
Jul 01, 2016
This comment has been removed by a moderator.
antigoracle
1.5 / 5 (22) Jul 01, 2016
Is askanarse claiming to not be human??? I can tell you I've had many pets that are a) more socialized, b) brighter, and c) have more interesting things to say.

LOL. Nurse...NURSE... It did not take its meds again!!
And yet, AGreatWanker, trolls the forum with its many suck-puppets, only fooling itself.
jim_xanara
4.1 / 5 (18) Jul 01, 2016
You have to forgive antisciencegorilla. He was struck over the head with a wooden door as a child and it left him a babbling idiot and absolutely terrified of Al Gore. When he's identified I intend to pay him a visit wearing an Al Gore mask. Guaranteed myocardial infarction.

Dunno about the jerking off bit. Besides being more complicated than what he can handle, he's grossly obese and it's been many decades since he saw his dick. The little thing is totally ingrown in the folds of fat.
AGreatWhopper
4 / 5 (21) Jul 01, 2016
antigoracle 1 / 5 (1) 10 minutes ago

And yet, AGreatWanker, trolls the forum with its many suck-puppets, only fooling itself.


Really? Can you point to any of your spew with a rating >= 2? Who's the fool?

And I'm not HM. Do you ever, even randomly, manage to say ANYTHING correct? Ever? No wonder you're so full of fear and loathing.
antigoracle
1.2 / 5 (18) Jul 01, 2016
When he's identified I intend to pay him a visit wearing an Al Gore mask.

LOL. I'm so scared...really...NO.
In your infinite ignorance you dare to presume too much. Like the fact that you couldn't possibly extricate yourself from Al's rectum and even better yet, if he would let you. Now take a deep whiff and tell us what Al had for dinner, that would be your only significant contribution to the forum.
Phys1
4.5 / 5 (15) Jul 02, 2016
How's Chucky the antisciencetroll? Still in a bad mood?
https://upload.wi...Doll.jpg
HeloMenelo
4.4 / 5 (14) Jul 02, 2016
Is askanarse claiming to not be human??? I can tell you I've had many pets that are a) more socialized, b) brighter, and c) have more interesting things to say.

LOL. Nurse...NURSE... It did not take its meds again!!
And yet, AGreatWanker, trolls the forum with its many suck-puppets, only fooling itself.

Sounds like this one already fell of his rocker... :D Say i've got a saved bookmark where you admit to creating your sockpuppets, and then being ridiculed on the spot, would be nice to pull it up and have some fun with it again won't ya think ? ;)
HeloMenelo
4.2 / 5 (15) Jul 02, 2016
How's Chucky the antisciencetroll? Still in a bad mood?
https://upload.wi...Doll.jpg


you got it wrong, here he is after skipping on his meds, breaking out the window Being the monkey.

http://www.funnyj...ow/15#15
kochevnik
1.5 / 5 (15) Jul 02, 2016
Oh no the CO2 is greening everything! Prepare a new narrative for David Rothschild!
And "homo sapiens" works just fine. Humans are indeed the "wise (intelligent) ones" when compared to all other species on earth.
Or at least the most "homo"
Da Schneib
4.7 / 5 (15) Jul 02, 2016
Two points worthy of note:
1. When the water stops it won't matter how much CO2 there is, the plants will start to die off.
2. This is the Northern Hemisphere north of the Tropic of Cancer; says nothing about the Tropics.

Neither of which the deniers pay any attention to, of course. The average IQ is 100; someone has to keep it down there.
antigoracle
1.4 / 5 (18) Jul 02, 2016
The average IQ is 100; someone has to keep it down there.

And, an exemplary job of it, you are doing.
LOL.
Phys1
4.4 / 5 (13) Jul 02, 2016
@chucky
You too.
LOL.
kochevnik
1.5 / 5 (17) Jul 02, 2016
Two points worthy of note:
1. When the water stops it won't matter how much CO2 there is, the plants will start to die off.

True. When the Sun becomes a red giant the plants will die off too. Only problem is that you failed to demonstrate any causation for the former. In fact rainforests generate their own moisture. It is called a biosphere. You may not notice because I see Americans love to kill all their trees and make black parking lots

But at least you love to pick cherries
retrosurf
5 / 5 (18) Jul 02, 2016
Gawd, the moderation here is the worst.
kochevnik
1.5 / 5 (16) Jul 02, 2016
zz5555 cannot make a rational argument so resorts to communist downvoting. Fascism is the real force behind the globalist movement. Tax respiration to start, despite nitrogen being 300 times more potent
DonCarloFantasia
Jul 02, 2016
This comment has been removed by a moderator.
Da Schneib
4.8 / 5 (17) Jul 02, 2016
Only problem is that you failed to demonstrate any causation for the former.
AGW.

Duh.

Source: http://www.scient...rldwide/

In fact rainforests generate their own moisture.
You're just repeating the same lie I debunked the last time. Remember?
Whydening Gyre
4.7 / 5 (14) Jul 02, 2016
FTA;
19 ESM simulations and a formal "detection and attribution" statistical algorithm to positively attribute changes in vegetation activity in the extratropical Northern Hemisphere to anthropogenic forcings, or human-induced climate inputs such as well-mixed greenhouse gas emissions.

Waitaminit - what about the 120 trees I've planted over the last 25 years, in my front yard alone? And all the shade tolerant grass I had to put in to keep it looking beautiful despite all the shade?
That's a lot of green...
(in more ways than one)
leetennant
4.8 / 5 (16) Jul 02, 2016
Gawd, the moderation here is the worst.


What moderation?
HeloMenelo
4.5 / 5 (15) Jul 03, 2016
The average IQ is 100; someone has to keep it down there.

And, an exemplary job of it, you are doing.
LOL.


That was directed to you, but of course your IQ does not allow you to understand that... :D
HeloMenelo
4.4 / 5 (14) Jul 03, 2016
zz5555 cannot make a rational argument so resorts to communist downvoting. Fascism is the real force behind the globalist movement. Tax respiration to start, despite nitrogen being 300 times more potent


First we need to get the goobers on here to advance to any form of rational IQ to argue against
humy
5 / 5 (17) Jul 03, 2016
.... The greening of the planet seems to be a good impact.
...

The only problem is, global warming would mean that greening would be more than reversed in the long run.
antigoracle
1.2 / 5 (18) Jul 03, 2016
You're just repeating the same lie I debunked the last time. Remember?

Might explain why Da Idiot is full of sheer bunk. Case in point, he claims that "fly by wire" is an AI system.
LOL.
Da Schneib
4.8 / 5 (16) Jul 03, 2016
Climate deniers can't count.
kochevnik
1.6 / 5 (17) Jul 03, 2016
Climate deniers can't count.
Religionists are not scientists, but can be fascists

Gawd, the moderation here is the worst.


What moderation?
Moderation of his climate, despite Chechen Little whining
antigoracle
1.3 / 5 (16) Jul 03, 2016
Climate deniers can't count.

Says Da Idiot, who couldn't count pass 20 even if he dropped his pants.
LOL
HeloMenelo
4.2 / 5 (15) Jul 03, 2016
You're just repeating the same lie I debunked the last time. Remember?

Might explain why Da Idiot is full of sheer bunk. Case in point, he claims that "fly by wire" is an AI system.
LOL.

Why antisciencemonkeygorilla is even starting to sound like I.R. baboon... I knew from the start we labeled you right :D

http://vignette2....tagonist
HeloMenelo
4.4 / 5 (14) Jul 03, 2016
Climate deniers can't count.
Religionists are not scientists, but can be fascists

Gawd, the moderation here is the worst.


What moderation?
Moderation of his climate, despite Chechen Little whining


monkey wants bananas..... :D
HeloMenelo
4.4 / 5 (14) Jul 03, 2016
Climate deniers can't count.

Says Da Idiot, who couldn't count pass 20 even if he dropped his pants.
LOL


But IR baboon does not even have pants.. see LOL:

https://66.media...._400.gif
Phys1
4.5 / 5 (15) Jul 03, 2016
@chucky
Says Da Idiot, who couldn't count pass 20 even if he dropped his pants.
LOL

You too.
LOL.
TrollCondensate
Jul 04, 2016
This comment has been removed by a moderator.
HeloMenelo
3.9 / 5 (14) Jul 04, 2016
Antigoracle twerking:

https://66.media...._400.gif
kochevnik
1.6 / 5 (14) Jul 04, 2016
retrosurf 5 /5 (2) 1 hour ago
Gawd, the moderation here is the worst.


It's not existent. Witness a Putin-bot apologist for Russian murder and misinformation is the next post. And there's the rub. While we all hate the lack of moderation, the biggest moans come from the trolls and cranks! So, that's how bad it is. The cranks are actually offended when they target the site, don't read the article, and troll, that they're down-rated!

Oh, and openly anti-semitic. Yeah. That bad.

kochevnik 1 /5 (3) 8 hours ago
Oh no the CO2 is greening everything! Prepare a new narrative for David Rothschild!
But tribalist zionist trolls are chosen by Yahweh. Hitler was half-Jew and used his mustache to hide his facial features. Zionists and half-Jews collude to persecute real Jews and the rest of humanity
kochevnik
1.6 / 5 (13) Jul 04, 2016
So the climate globalists are one and the same as the Babylonian child-molesting globalists celebrating this month at Bohemian Grove. They march in unison with their little mantras, attempting character assassination and other worn tactics against non-believers in their righteousness

No science in the comments section. Just fascism
Da Schneib
4.7 / 5 (14) Jul 04, 2016
No science in the comments section.
Well, none from you anyways.

News flash: AGW is a zionist plot. @kochevnik knows because the Kontora Grubykh Banditov told him so.
kochevnik
1.6 / 5 (14) Jul 04, 2016
No science in the comments section.
Well, none from you anyways.

News flash: AGW is a zionist plot. @kochevnik knows because the Kontora Grubykh Banditov told him so.
So why did David Rothschild spearhead funding and the AGW concept long before you chimed in? Did you realize that science uses the null hypothesis? Why do your fascists attack anyone assuming the null hypothesis? What happened to your scientific objectivity? Is man heating up Mars and Venus as well? How is man doing that, Mr. Scientist?

More than a few Israelis in this comments section it seems
kochevnik
1.9 / 5 (14) Jul 04, 2016
Back to the article. I explained this phenomenon a fortnight ago yet the peanut gallery here told me I was wrong. So here is the article and yet the same fine gentlemen cannot explain haw lush growth of fauna is a bad thing. If anything AGW is a good thing, according to the article. But that does not follow the narrative that the peanut gallery was told to bleat
Da Schneib
4.7 / 5 (14) Jul 05, 2016
ROFLAMO, this fool really believes AGW is a Jewish plot to take over the world!

Dude, if you are serious you are batsh*t crazy.

Just for the record (not that you'll believe it), I'd never met a Jew until I was 15.

Nazi much? Just askin'.

This is typical of the beliefs of the deniers. Yes, they really are nutjobs just like this one.
leetennant
4.7 / 5 (15) Jul 05, 2016
Protocols of the Elders of Batshit Crazy
antigoracle
1.5 / 5 (15) Jul 05, 2016
This is typical of the beliefs of the deniers. Yes, they really are nutjobs just like this one.

Uh huh, and the Chicken Littles belief that Big Oil is paying the heretics is so plausible. But, the most amusing thing about that belief is that if the ignorant Chicken Littles stopped buying what Big Oil is selling then they won't have any money to pay anyone.

Stupid much? Just askin'....NOT.

Da Schneib
4.7 / 5 (14) Jul 05, 2016
Y'know, having found yourself in bed with heavily propagandized Russian Nazi bigots making up stories about how global warming is all a plot by the Jews to take over the world, perhaps you should consider that you might be on the wrong side.

Just sayin'.
jeffensley
1.9 / 5 (14) Jul 05, 2016
My "controversial" comment
It would be interesting to know how this changes the albedo. A cursory glance at the graphic suggests it should result in an increase. Of course it may be a draw since duration of snow cover is decreasing.
received 1 / 5 stars by (8) users. (HeloMenelo, Captain Stumpy, AGreatWhopper, jim_xanara, BongThePuffin, TrollCondensate, ThunderDolts, DonCarloFantasia) For anyone hoping to come here and find intelligent discussion, please move along.

kochevnik
1.9 / 5 (14) Jul 05, 2016
Lots of begging the question, lots of belligerent Israeli trolling, and very little science here

Zionists angry that CO2 is greening the Earth, defeating their own doomsday scenario that was to make them look like heroes and saviors owed carbon taxes. No shekels for them
kochevnik
2.1 / 5 (15) Jul 05, 2016
Y'know, having found yourself in bed with heavily propagandized Russian Nazi bigots making up stories about how global warming is all a plot by the Jews to take over the world, perhaps you should consider that you might be on the wrong side.

Just sayin'.
You are only proving your stupidity. 98% of top NAZIs in Germany had Jewish heritage. Where are the NAZIs in Russia? I only saw Germans recruiting young rootless punks. Anyone can fool little kids, and you

NAZIs are in Porky's Ukraine and you support them, you fucking NAZI sympathizing hypocrite
HeloMenelo
4.1 / 5 (13) Jul 05, 2016
This is typical of the beliefs of the deniers. Yes, they really are nutjobs just like this one.
Uh huh, and the Chicken Littles belief that Big Oil is paying the heretics is so plausible. But, the most amusing thing about that belief is that if the ignorant Chicken Littles stopped buying what Big Oil is selling then they won't have any money to pay anyone.

Stupid much? Just askin'....NOT.


Stupid IR baboon much Monkey twerk baboon:

https://66.media...._400.gif



HeloMenelo
4.4 / 5 (14) Jul 05, 2016
ROFLAMO, this fool really believes AGW is a Jewish plot to take over the world!

Dude, if you are serious you are batsh*t crazy.

Just for the record (not that you'll believe it), I'd never met a Jew until I was 15.

Nazi much? Just askin'.

This is typical of the beliefs of the deniers. Yes, they really are nutjobs just like this one.


Indeed Da Schneib indeed, the monkeyjob antisciencegorilla never being shy to confirm his inner nuttiness.. :D
Maggnus
4.7 / 5 (15) Jul 05, 2016
You are only proving your stupidity. 98% of top NAZIs in Germany had Jewish heritage. Where are the NAZIs in Russia? I only saw Germans recruiting young rootless punks. Anyone can fool little kids, and you

NAZIs are in Porky's Ukraine and you support them, you fucking NAZI sympathizing hypocrite


Whoa, what a nutcase. Interesting political view you have there commie boy. The only group worse than Nazies for killing their own citizens were the commies. Do you recall who aligned themselves with the Nazies dimwit?
BongThePuffin
Jul 06, 2016
This comment has been removed by a moderator.
antiantigoracle
Jul 06, 2016
This comment has been removed by a moderator.
HeloMenelo
3 / 5 (4) Jul 06, 2016
antigoracle 1.6 /5 (7) Jul 05, 2016

Uh huh, and the Chicken Littles belief that Big Oil is paying the heretics is so plausible


No one thinks you've ever earned a penny in your life, even as a shill. No, we know how it works. Orgs with a stake in denying AGW pay sites like this to not delete cranks' posts. That also increases their hits. The site aggregates science stories, but it's revenue comes from giving cranks a place to post with impunity.

Can't complain, i love putting the shine on the cranks, it's one hilarious circus

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