Of course, it might just be a negative feedback at work.
From NASA: Appearance of Night-Shining Clouds Has Increased
First spotted in 1885, silvery blue clouds sometimes hover in the night sky near the poles, appearing to give off their own glowing light. Known as noctilucent clouds, this phenomenon began to be sighted at lower and lower latitudes — between the 40th and 50th parallel — during the 20th century, causing scientists to wonder if the region these clouds inhabit had indeed changed — information that would tie in with understanding the weather and climate of all Earth.
A NASA mission called Aeronomy of Ice in the Mesosphere, or AIM, was launched in 2007 to observe noctilucent clouds, but it currently only has a view of the clouds near the poles. Now scientists have gathered information from several other missions, past and present, and combined it with computer simulations to systematically show that the presence of these bright shining clouds have indeed increased in areas between 40 and 50 degrees north latitude, a region which covers the northern third of the United Sates and the lowest parts of Canada. The research was published online in the Journal of Geophysical Research: Atmospheres on March 18, 2014.
“Noctilucent clouds occur at altitudes of 50 miles above the surface — so high that they can reflect light from the sun back down to Earth,” said James Russell, an atmospheric and planetary scientist at Hampton University in Hampton, Va., and first author on the paper. “AIM and other research has shown that in order for the clouds to form, three things are needed: very cold temperatures, water vapor and meteoric dust. The meteoric dust provides sites that the water vapor can cling to until the cold temperatures cause water ice to form.”
To study long-term changes in noctilucent clouds, Russell and his colleagues used historical temperature and water vapor records and a validated model to translate this data into information on the presence of the clouds. They used temperature data from 2002 to 2011 from NASA’s Thermosphere Ionosphere Mesosphere Energetics and Dynamics, or TIMED, mission and water vapor data from NASA’s Aura mission from 2005 to 2011. They used a model previously developed by Mark Hervig, a co-author on the paper at GATS, Inc., in Driggs, Idaho.
The team tested the model by comparing its output to observations from the Osiris instrument on the Swedish Odin satellite, which launched in 2001, and the SHIMMER instrument on the U.S. Department of Defense STPSat-1 mission, both of which observed low level noctilucent clouds over various time periods during their flights. The output correlated extremely well to the actual observations, giving the team confidence in their model.
The model showed that the occurrence of noctilucent clouds had indeed increased from 2002 to 2011. These changes correlate to a decrease in temperature at the peak height where noctilucent clouds exist in the atmosphere. Temperatures at this height do not match temperatures at lower levels – indeed, the coldest place in the atmosphere is at this height during summertime over the poles – but a change there certainly does raise questions about change in the overall climate system.
Russell and his team will research further to determine if the noctilucent cloud frequency increase and accompanying temperature decrease over the 10 years could be due to a reduction in the sun’s energy and heat, which naturally occurred as the solar output went from solar maximum in 2002 to solar minimum in 2009.
“As the sun goes to solar minimum, the solar heating of the atmosphere decreases, and a cooling trend would be expected,” said Russell.
NASA’s Goddard Space Flight Center in Greenbelt, Md. manages the TIMED mission for the agency’s Science Mission Directorate at NASA Headquarters in Washington. The spacecraft was built by the Johns Hopkins University Applied Physics Laboratory in Laurel, Md.
Related Links:
› Noctilucent clouds and AIM mission
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I’m guessing that it could be mighty cold at 50 miles high. On my recent trip to Geneva, I saw -68 deg C at 34-38, 000 feet, and while descending to Geneva, I saw -59 deg. C down to 8,000 ft.
So I think ice could form 50 miles up, if you have H2O up there. Thet might imply that there is H2O at lower altitudes too.
D’ya think more dime store clouds could be forming at lower altitudes too ??
Pilot reported that puffy scattered clouds over that part of Europe, were at 4100 ft, according to Paris who gave them the answer to my question.
But of course we continue to hear how cloud cover simply has not changed at all.
Mother Gaia is not going to like all those noctilusions, where they ain’t supposed to be.
Fancy that, water likes to condense on a substrate, including asteroids and microbes, as well as muons and other things.
Willis should add translucent clouds to his list of emergent phenomena – I’d add Saharan dust storms, too. In a warming world there are no bad clouds. Based on the polar image they don’t go away on the daylight side of the world, so they work to our benefit 24/7.
Please explain to me one more time why they shine? Is it reflected light from beneath or is the ice resonating?
Hateful spell checker – translucent should be noctilucent.
“””””…..gymnosperm says:
April 10, 2014 at 9:52 pm
Please explain to me one more time why they shine? Is it reflected light from beneath or is the ice resonating?…..”””””
They don’t shine; they are high enough to still be in sunlight after sunset. I don’t think you can see them at midnight.
Typo in pic caption – should be ‘Loch’, not Lock
If this is an impact of climate change, well, it’s pleasing one. Score one in the benefits column.
I used to see these late at night over the North Atlantic enroute to London. They looked similar to scattered cirrus catching the predawn sun, but they were way the heck up there judging by how fast we were passing under them.
Are you kidding me.
Climate change was global warming.
Sorry had to throw that in.
Its the sun always was and always will be.
It does not take a rocket scientist to figure that out.
The farmers almanac people knew this way before we spent billions of dollars giving yahoos money to tell us what we already know.
So tired of the man is doing it crowd.
C02 is a wonderful gas that gives us life and feeds the people who the liberals say they want to help.
What lies.
Ok I feel better getting that off my chest.
Thank God for you Anthony keep up the great work.
Dave
The fact that the jet stream , sprites and noctilucent clouds are still little understood and only became know about in the last hundered years , suggest there is still much not ‘settled ‘ about the atmosphere. Add in that you cannot make a weather forecast worth a dam for over 48 hours and you have to wonder how climate ‘science’ has become able to make forecasts for 50 or more years ahead to a precision of two decimal places.
I would swear I saw an article some years back claiming that noctilucent clouds were disappearing, and ‘man-made’ global warming was to blame. Try as I might, though, I cannot seem to find my way back to it.
” Now scientists have gathered information from several other missions, past and present, and combined it with computer simulations to systematically show that the presence of these bright shining clouds have indeed increased in areas between 40 and 50 degrees north latitude,”
Is it possible to find a single study in this field that doesn’t contain one of the phrases “computer model”, “computer simulation”, or “adjusted data”?
I will speculate that it is due to over the pole air travel. As the number of these flights have increased in the stratosphere, that is a lot of water vapor that is getting dumped up there.
Put another way — is there also an increase in these sorts of clouds in the Southern Hemisphere? If not, than it is likely due to a local cause. I suspect air travel.
They already have blamed global warming:
“Noctilucent clouds as possible indicators of global change in the mesosphere”
G.E. Thomasa, J. Oliverob
Advances in Space Research
Volume 28, Issue 7, 2001, Pages 937–946
http://www.sciencedirect.com/science/article/pii/S0273117701800211
Now scientists have gathered information from several other missions, past and present, and combined it with computer simulations to systematically show that the presence of these bright shining clouds have indeed increased in areas between 40 and 50 degrees north latitude, a region which covers the northern third of the United Sates and the lowest parts of Canada.
Sorry, but computer simulations aren’t data. Either there’s an observation or there’s nothing. If the observations aren’t enough to support the claim that the appearances of noctilucent clouds have increased between 40 and 50 degrees north latitude, no amount of data massaging will make it so.
Checking google for information brings up a lot of older material blaming global climate change for these clouds. For example this was in “Wired” 2009
http://www.wired.com/2009/07/nightclouds/
There is also research on the clouds over Antarctica and methane is blamed, but the methane increase is blamed on climate change.
I want to know if the global warming computer models include the influence of noctilucent clouds.
I think Crosspatch has probably got it right – the noctilucent clouds are the result of air transport. The planes put steam up there which quickly solidifies, and the ice crystals – so small as to be buffeted about by the air molecules rise as they warm the adjacent air and eventually rise to the very high levels referred to. And up there they reflect the sun’s rays, just increasing the albedo a teeny weeny bit, and since 1998 have removed all the heating.
Well, this might be a long bow, but it is one more explanation for the cessation of CAGW.
BTW – I saw a site giving data re temperature increases for California. Turns out that the overwhelming majority of the increases were in cities and towns, and in the ‘rural’ areas there was no increase. HIE rules!
A Day in the Life of Air Traffic Over the World
That video is several years old. Some new polar routes have opened since then. Some in only the past couple of years.
Also, the rate if increase of air cargo routes is greater than passenger routes. A lot more cargo takes polar routes than did 10 years ago.
Puzzle pieces to Arctic sea ice? last 5 years there were more NLC’s and 2013 summer the most and the Arctic experienced the coolest summer on record. last 3 of 5 summers coolest on rec, rec back to 1958
I see the connection and the Sun is giving warning signal of much colder times ahead if it stays quiet.
https://twitter.com/NJSnowFan/status/454558537591439360/photo/1
The more NLC”S, the more sunlight is reflected back into space in the higher latitudes, right?
Also there was summer frost in the summer of 2013.
I bet this summer there will be more NLC’s then last year and more summer frost and cool arctic summer.
We will se.
Your are late to the party. Here are news reports from 2007
Catastrophic Global Noctilucent Clouding
We’re dooooomed!!!!!