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Figure 1: Ice mass changes (solid lines with circles) and their best-fitting linear trends (dashed line) for the West Antarcica Ice Sheet (red) and East Antarcica Ice Sheet (green) for April 2002 to August 2005 (Velicogna 2007).
www.sciencemag.org...
Using measurements of time-variable gravity from the Gravity Recovery and Climate Experiment satellites, we determined mass variations of the Antarctic ice sheet during 2002–2005. We found that the mass of the ice sheet decreased significantly, at a rate of 152 ± 80 cubic kilometers of ice per year, which is equivalent to 0.4 ± 0.2 millimeters of global sea-level rise per year. Most of this mass loss came from the West Antarctic Ice Sheet.
www.sciencemag.org...;311/5768/1747
Paleoclimatic Evidence for Future Ice-Sheet Instability and Rapid Sea-Level Rise
Jonathan T. Overpeck,1* Bette L. Otto-Bliesner,2 Gifford H. Miller,3 Daniel R. Muhs,4 Richard B. Alley,5 Jeffrey T. Kiehl2
Sea-level rise from melting of polar ice sheets is one of the largest potential threats of future climate change. Polar warming by the year 2100 may reach levels similar to those of 130,000 to 127,000 years ago that were associated with sea levels several meters above modern levels; both the Greenland Ice Sheet and portions of the Antarctic Ice Sheet may be vulnerable. The record of past ice-sheet melting indicates that the rate of future melting and related sea-level rise could be faster than widely thought.
What I state is that regardless of what you or I think causes these melts, the melts will impact the globe and we need to acknowledge that and act accordingly.
Originally posted by atlasastro
reply to post by treesdancing
Do you have any comment on the OBSERVED and DOCUMENTED trends in melting of GLOBAL glaciers as indicted in the OP video and the World Glacier Monitoring Service and the Extreme Ice Survey?
What part of the OP did you not understand or do you dispute?
Despite air temperatures always being below freezing, areal retreat of plateau glaciers is governed mostly by solar radiation induced melt on vertical walls that characterize their north and south margins [Mölg et al., 2003]
Most glacier ablation is due to sublimation, and where ice does melt it immediately evaporates into the atmosphere… The scenario presented offers a concept that implies climatological processes other than increased air temperature govern glacier retreat on Kilimanjaro in a direct manner.
Some easy questions for you to answer, if you will, my friend.
Do you accept that Glaciers are melting around the Globe?
Do you accept that it is warming that would melt these glaciers around the Globe?
Do you think we should act?
www.sciencemag.org...;311/5768/1747
...Polar warming by the year 2100 may reach levels similar to those of 130,000 to 127,000 years ago that were associated with sea levels several meters above modern levels...
...Do you think we should acknowledge these effects in view of all the material pointing out clearly that we are seeing rapid melts NOW and that these rapid melts will have effects like they did in previous eras.
And do you think we should act accordingly?
Point out where I say that. Just once dude. point out in the OP or any of my posts on this thread where I say that.
Originally posted by afterschoolfun
Ok, ice is melting. Do you show any IRREFUTABLE evidence that this is a man-made cycle... nope.
Just out of interest, did they come to a conclusion that Mt. Kilimanjaro was isolated from the earth and the atmosphere so that is was only being acted on purely by solar energy. I'll come to that in a moment.
What's irrefutable? There are examples of glaciers receding with air temperatures below freezing, the most famously shown to be purely solar is Mt.Kilimanjaro
www.nytimes.com...
But Georg Kaser, a glaciologist at the Institute for Geography of the University of Innsbruck in Austria, said that the ice measured was only a few hundred years old and that it had come and gone over centuries.
What is more, he suggested that the recent melting had more to do with a decline in moisture levels than with a warming atmosphere.
Very interesting.
Despite air temperatures always being below freezing, areal retreat of plateau glaciers is governed mostly by solar radiation induced melt on vertical walls that characterize their north and south margins [Mölg et al., 2003]
This actual quote is important because it gives us a clue as to other CLIMATOLOGICAL PROCESSES other then air temperature that are influencing the Ice melts. Climate.
Most glacier ablation is due to sublimation, and where ice does melt it immediately evaporates into the atmosphere… The scenario presented offers a concept that implies climatological processes other than increased air temperature govern glacier retreat on Kilimanjaro in a direct manner.[
An article in the American Scientist (“The Shrinking Glaciers of Kilimanjaro: Can Global Warming Be Blamed” by Philip Mote and Georg Kaser, July-August 2007) blames a decrease in precipitation and an increase in sublimation.
that drier conditions (reduced humidity) in East Africa during the 20th century (after several wetter decades before 1880) have reduced precipitation and cloud cover and thereby increased both incoming solar radiation (insolation) and net solar radiation (caused by less snow).
www.pnas.org...
On a larger scale, East Africa (10°N - 15°S; 25°E - 40°E) exhibits an overall warming trend (1901–2000) with large decadal variability and no overall precipitation trend, although the 1961–1970 precipitation maximum is present (figure 3 in ref. 3). A 25-year temperature and precipitation history recorded in the Amboseli Basin, a few kilometers from the northern base of Mount Kilimanjaro, reveals a warming trend in both maximum and minimum temperatures and large interannual variability in precipitation but no long-term trend (11). Altmann et al. (11) note that the weather and water availability at Amboseli are highly affected by conditions on the mountain. Over recent decades there has been a continual transformation of the landscape surrounding Kilimanjaro into agricultural land, thus, unraveling large-scale climate forcing from regional forcing caused in part by landscape changes is difficult.
Research by Britain’s Portsmouth University indicated the decline of Mt. Kilimanjaro glaciers is: “caused more by local than regional factors. Pepin believes that deforestation which is mainly due to extensive farming is the major cause. … Deforestation of the mountain`s foothills is the most likely culprit because without forests there is too much evaporation of humidity into outer space. The result is that moisture-laden winds blowing across those forests have become drier and drier.”
Its a great link. I suggest you read it too. Thanks.
I suggest you read the source material from that list. But if it's too much just look at these pictures
Again, where in the OP do I address man made causes.
Suggesting that we can do something about 'climate change' (which, is retarded because if climate didn't change IT WOULDN'T BE A CLIMATE) means man-made causes,
even you would agree that C02 levels were not an issue in 1900, but the receding has steadied out since then even in this era of unprecedented pollution.
I can see that.
Do you accept that it is warming that would melt these glaciers around the Globe?
Not necessarily.
What a stupid solution.
[sarcasm] Yeah sure, by instilling 'green police' around the globe and putting huge taxes on people to pay for their carbon footprint [/sarcasm]
Yes acknowledge them, but act how? You just admitted that ancient sea levels will match ours in 100 years. So by your own admission man has little to do with sea level rise and we're assuming that we have any say in what the sea will do?
OMG, not the economy, don't hurt the economy.
So, what are we to do? Move billions of people inland and decimate the economy rebuilding all coastlines (which would cost the world unimaginable amounts of money and resources btw) based on pure speculation?!
I know that dude. I don't ever at all say that we need to stop nature. Not once.
Because thats all we really can do in the case that the sea level will rise, there would be no stopping it.
Originally posted by atlasastro
reply to post by afterschoolfun
Because thats all we really can do in the case that the sea level will rise, there would be no stopping it.
I know that dude. I don't ever at all say that we need to stop nature. Not once.
And if you acknowledge that there is no stopping it, why wait around until it is there to react to rather then prepare for. That is all I am asking?
Don't you think we should act accordingly?
Accordingly would mean, to not try and stop the unstoppable but try and minimize and reduce the impact on our societies.
When will people like you realize that this thread has nothing to do with that?
When are people going to realise that the concept of Climate is change and that you, me or 6 Billion are not going to stop it, change it, or even influence it!
No crap sherlock. You 10 year old sounds rather bright, I bet if your 10 year old read the OP he/she would probably actually address the actual topic.
My 10 year old knows why the climate changes both here on Earth and on the other planets its the big yellow disc dad!
So no need for IPCC quango (the same crew that brought us Global Cooling in the 70/80’s)or Climate science or more accurately profit/career science and control from the ECO crusaders. If you want to not use Oil cool, recycle cool but stop the Climate Change Cult religion I don't want to be part of it or pay for it!
Oh no! Snippy comments from a amateur climatologist!
With a mentality like that, I agree, we're not going to be alive in 100 years.
We're not going to be alive in 100 years
You are already betting my friend. Given the fact that you can hardly build a solid discussion related to just one climate change matter(that being Kilimanjaro) I would say that the safer bet would be to place money on your own opinion related to climate change as being the definition of B.S. I am sure you are onto a winner there.
, and if I was a betting man I'd say the effects predicted will turn out to be a load of BS.
Science has been wrong so many times before, and predicting the weather isn't even 100 years old. And blah, blah... its like talking to a brick wall.
Actually, the beaches will be lost. Most beaches are formed over thousands of years.
On the bright side I'd be a whole lot closer to the beach if you're little theory is correct.
On the bright side I'd be a whole lot closer to the beach if you're little theory is correct.
You will probably need air conditioning to cool your place.
Originally posted by Cosmic4life
If the planet was warming i would be glad.
Might reduce my damn heating bills!
That is simply not true.
Actually a cooling trend has been continuous since the late 90's.
We had the hottest year on record in 2005, some cooling due to la Nina, and now a return to warming trend in 2009.
Although 2008 was the coolest year of the decade because of a strong La Nina that cooled the tropical Pacific Ocean, 2009 saw a return to a near-record global temperatures as the La Nina diminished, according to the new analysis by NASA's Goddard Institute for Space Studies (GISS) in New York. The past year was a small fraction of a degree cooler than 2005, the warmest on record, putting 2009 in a virtual tie with a cluster of other years --1998, 2002, 2003, 2006, and 2007 -- for the second warmest on record.
I agree. All our weather comes from energy. The Sun.
This has been masked by cosmic weather introducing energy into the system.
Yep.
As a previous poster has stated, what we must do is adapt.
Actually, prove it.
PS. Actually most Glaciers have been steadily growing.
I don't use MSM. I have linked time lapse images over three years that go through the seasonal changes, it shows losses in winter as well as summer.
All MSM information and pictures are conveniently taken in the summer.
Don't believe the hype.
Everything is cool.
And possibly getting a lot cooler.
What I state is that regardless of what you or I think causes these melts, the melts will impact the globe and we need to acknowledge that and act accordingly.
... since the warming aspect of CO2 is atmospheric-based, it cannot be CO2 causing the melting.
That is a scientific analysis... shooting time-lapse photography is not.
But I was impressed by one thing from the speaker. At the beginning, he admitted openly that his forte was art rather than science. In that respect, it would appear he did good; those are right purty pichers he's got there.
But it's not science.