Global Dimming

Global Dimming

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Ratings: 7.93/10 from 68 users.

Since measurements began in the 1950s, scientists have discovered that there has been a decline of sunlight reaching the Earth; they called it global dimming.

But according to a paper published in the journal Science, the dimming did not continue into the 1990s and indeed since the 1980s scientists have observed a widespread brightening. What caused the dimming to go down and what effect will it have, if any, on climate change?

The film explores the theory that pollution is shielding the oceans from the full power of the Sun, and disrupting the pattern of the world-s rainfall. There is evidence that dimming caused the droughts in sub-Saharan Africa which claimed hundreds of thousands of lives in the 1970s and 1980s.

It reveals that we may have grossly underestimated the speed at which our climate is changing. At its heart is a deadly new phenomenon. One that until very recently scientists refused to believe even existed. Alarmingly the dimming continues today, and Asia, home to half the world-s population is currently under threat.

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52   Comments / Reviews

Leave a Reply to Joe Cancel reply

  1. Easy to understand how global dimming has masked the effects of global warming. Shame on those who make up unproven ideas after seeing this documentary. Here it is 2022 & we’ve barely changed our habits. We need to prepare for the horrible endgame. We’re too late to get it stopped. Fires, floods, famine, migrations, & loss of life are on the horizon.

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  2. Cut the worlds' population in half. Bring in a one (oh, what the hell) none child policy world-wide.

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  3. Global Dimming has been proven to be localized - so India and China are less warm due to their high levels of sulfur aerosol pollution from burning coal.

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  4. I suspect the causes of Global Dimming are due to 1) Geoengineering/Solar Radiation Management/Chemtrails = all the same thing 2) H.A.A.R.P. etc.. Considering the poles have been changing for years = a natural process of earth, BUT add 1) and 2) And well, manipulating the (weather) also via these means = drastic changes detrimental to all life forms. Intended purpose stated by Mr. David Keith (may be paraphrased....spraying aluminum to reflect the sun rays away from earth = blocking = Global Dimming. Man-made. Considering (causes) are key = stop that.

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  5. Good, I hope I live to see it all happen.

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  6. Global dimming refers to the average person's capacity to think rationally.

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  7. saw countless times - people are not grateful for showing them THE TRUTH that much I can tell you - they rather money.

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  8. Chemtrails is not mentioned. WHY?? I would suggest that everyone look up srmgi Solar Radiation Management Governance initiative. Then you will find Global Dimming more of an understanding factor. if you put a blanket over the globe the heat cannot leave the earth hence global warming

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  9. the CO2 lines have been 100% absorbed all your life. Increasing CO2 only causes second order effects due to saturation. In short CO2 is getting the blame for stratospheric contrails.(climate change)

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  10. global dimming is caused by the Geo-engineering, and your carbon tax comes right from the agenda 21 by the U.N.

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  11. Conflicts with writings from the 70s on the topic of the sub sahara which found there was a man made link, namely agriculture practiced poorly.

    The Sahara became a pure desert due to farming of cotton there, which used extensive amounts of fertilizer and pesticide. Soil was washed away without generating new soil or bringing back nutrients to the ground. This monoculture caused desert conditions which quickly spread at the turn of the 20th century.

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  12. global warming is a scam.
    why are polar ice caps on mars melting? too many cars? i don't think so.
    there is an increase in temperature all over our solar system, and it is more likely caused by the sun itself. anyone trying to get a dollar out of this natural occurrence is banking on the average person not thinking about it enough or not thinking about it at all.

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  13. Did he take into account the mass amounts of smoke sent into the atmosphere from the 911 world trade center towers?

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  14. Clean up ur SH*T and start over dont pile up the SH*T u already got going on switch to solar and wind powerd things and build creative things like world wide cooling units or huge domed cities with ac units for hospitable enviroments you got technology and money politics suk my balls and take the steps toward making everyday peoples lives or the general populations lives more normal nobody needs special treatment everyone just wants 2 live normally without super floods and droughts just do the work nd' stop being lazy greedy poloticians

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  15. Make 150 climate models with 100 change factors that can change the outcome significantly. The models that have the most catastrophic changes in them will be the most interesting and will be the one that are published.

    Sorry people, this and the global warming is one of the biggest political
    swindle of the 2100 century.

    With best regards from Iceland :)

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  16. Now the Global Warming got another name to deal with Illuminati idea! great work! all the scientist are talking about Global Warming only? anyway watch this just like a modern Hollywood documentary!!

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  17. The problem is we think in linear terms and these natural systems are extremely complex. View Michael Crichton's talk to the Smithsonian Institute "Fear complexity and public policy"

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  18. And once again (we re-invent the wheel) ..... water vapor is the most significant of greenhouse gases, followed by CO2 (impacts are based on individual gas chemical properties together with atmospheric lifetime and % concentration). Water vapour contributes 35-70% of greenhouse effects, CO2 ~10-25%, and methane ~5-10%, with others also contributing to a lesser extent. These impacts are due to combined absorbance properties in the IR range, airborne lifetimes and relative concentrations (water vapor is relatively high - low over deserts to ~4% over oceans). In terms of content, CO2 is ~0.04% by volume, and rising measurably (see the data of those weather mongers at the Mauna Loa Observatory for the small seasonal cycling and recent net rises). Methane is low but more potent as a greenhouse gas, yett may rise with permafrost melting and bubbling from sub-ocean storage. Check the ‘nefarious’ IPCC site for its listing of gases and effects if the texts are too difficult.

    To put the ominous volcanic CO2 emissions into perspective, volcanolgists estimate volcanoes currently release 200 million tonnes of CO2 annually. Relative to a 50 billion tons anthropogenic output of CO2 per annum, volcanoes generate less than 0.5% of the human derived output. Nope, the prob ain’t the volcanoes.

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  19. Still stymied by the intellectual dark-age we seem to ‘hope’ to remain in, and the knee-jerk negativity of so many. Yes, dimming is occurring, particularly recent decades. Yes, its effects will be felt and it impact on climate and water. Read Stanhill and Cohen (S. Agric. For. Met. 107, 255–278, 2001) for an older review. More recent studies/reviews worthy of a perusal include some in Nature (yep, a pretty solid journal ….), such as Gedney et al. (Nature 439: 835-838, 2006; including pro-con commentary) regarding the impact of this, together with reduced plant transpiration due to CO2-induced stomatal closure (plants self-regulate according to CO2) on water runoff and freshwater availability; Mercado et al. (Nature 458: 1014-1017, 2009) regarding dimming, carbon emissions and aerosols; or Ramanathan and Carmichael (Nature Geoscience 1, 221 – 227, 2008) on relevance of airborne black carbon to global and regional climate. More recently a multi-institutional detailed study from scientists from Estonia, Ukraine, Russia and USA confirms a downward trend in atmospheric transparency since WW2, together with details of effects of volcanic, human and other factors over longer periods (Ohvril et al. Journal Of Geophysical Research 114: D00D12, 2009).

    Perhaps rather than knee-jerk irritation at admittedly alarmist approaches of the media (though arguably an alarming scenario worth consideration – precautionary principles and all that), it is certainly worth following up on peer-reviewed science and views (or are counter-conspiracists suggesting these outlets are conspiracy publications?).

    On the other hand, it’s a lot easier to remain ill-informed and simply refuse education, go about our selfish insular lives. It’s only a problem for our kids and their offspring after all …..

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  20. At one time, I thought the internet would save the world. Now, I see that the spread of these totally ridiculous conspiracy theories and the id**ts it influences, has moved from out of control to dangerous.

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  21. i was not too impressed with this doc - then i read the comments below - to me it seamed like there was repeated info in the doc about the energy crisis and all that other finite shit on earth and not enough depth - i did not watch all the way through as i was not too impressed with the hippy house builders who to me were kinda out of touch ... with reality -

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  22. p.s

    please excuse my awful spelling... :)

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  23. I'm confused- i understand both global dimming and its partner in crime global warming but this program suggests that a rise in temperature would melt the greenland ice,if that were to happen wouldn't all that fresh water turn slow down the gulg conveyor belt brinnigin temperatures down in the northern hemisphere? Would all three work alongside each other with an increase in temp?

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  24. brian... first thing, are you from texas????? you practically copied al gore's movie!! haha
    secondly when you come up with a solution to this problem that most of us know about.. fill us in!!!
    maybe next time you can write a book and publish it!
    so glad i live in n.l. and not the u.s.a

    p.s the military is making new weapons that do not require fuel.

    1. is a laser beam that when you get close enough it will feel like your skin is on fire!

    2. another laser that sweeps across vast distance's and blinds the enemy for a few days (apparently)
    so before you think you know everything... do some research!!

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