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posted by cmn32480 on Thursday February 21 2019, @01:19PM   Printer-friendly
from the but-Al-Gore-told-us-different dept.

The supposed deleted text:

The Sun is the primary forcing of Earth's climate system. Sunlight warms our world. Sunlight drives atmospheric and oceanic circulation patterns. Sunlight powers the process of photosynthesis that plants need to grow. Sunlight causes convection which carries warmth and water vapor up into the sky where clouds form and bring rain. In short, the Sun drives almost every aspect of our world's climate system and makes possible life as we know it.

Earth's orbit around and orientation toward the Sun change over spans of many thousands of years. In turn, these changing "orbital mechanics" force climate to change because they change where and how much sunlight reaches Earth. (Please see for more details.) Thus, changing Earth's exposure to sunlight forces climate to change. According to scientists' models of Earth's orbit and orientation toward the Sun indicate that our world should be just beginning to enter a new period of cooling — perhaps the next ice age.

However, a new force for change has arisen: humans. After the industrial revolution, humans introduced increasing amounts of greenhouse gases into the atmosphere, and changed the surface of the landscape to an extent great enough to influence climate on local and global scales. By driving up carbon dioxide levels in the atmosphere (by about 30 percent), humans have increased its capacity to trap warmth near the surface.

Other important forcings of Earth's climate system include such "variables" as clouds, airborne particulate matter, and surface brightness. Each of these varying features of Earth's environment has the capacity to exceed the warming influence of greenhouse gases and cause our world to cool. For example, increased cloudiness would give more shade to the surface while reflecting more sunlight back to space. Increased airborne particles (or "aerosols") would scatter and reflect more sunlight back to space, thereby cooling the surface. Major volcanic eruptions (such as that of Mt. Pinatubo in 1992) can inject so much aerosol into the atmosphere that, as it spreads around the globe, it reduces sunlight and cause Earth to cool. Likewise, increasing the surface area of highly reflective surface types, such as ice sheets, reflects greater amounts of sunlight back to space and causes Earth to cool.

Scientists are using NASA satellites to monitor all of the aforementioned forcings of Earth's climate system to better understand how they are changing over time, and how any changes in them affect climate.

http://joannenova.com.au/2019/02/nasa-hides-page-saying-the-sun-was-the-primary-climate-driver-and-clouds-and-particles-are-more-important-than-greenhouse-gases/

Supposed screenshot of the page: https://s3.amazonaws.com/jo.nova/debunk/us/nasa/nasa-climate-forcings-2010.gif
Supposed archive.org link (no longer works):
https://web.archive.org/web/20100416015231/https://science.nasa.gov/earth-science/big-questions/what-are-the-primary-causes-of-the-earth-system-variability/]

Articles from 2010-2011 quoting the link and then noting it has disappeared:
https://www.americanthinker.com/blog/2010/12/climate_change_its_the_sun_stu.html
https://www.americanthinker.com/blog/2011/01/nasas_muzzle_hustle.html

Is this fake news? Can anyone here verify whether this page ever existed (or not)?


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  • (Score: 2) by HiThere on Thursday February 21 2019, @05:33PM (1 child)

    by HiThere (866) Subscriber Badge on Thursday February 21 2019, @05:33PM (#804585) Journal

    OTOH, the sun clearly *IS* the primary climate driver. That's why winters are colder than summers. And the sun has gotten a lot hotter since the dinosaurs were dominant.

    And I guess that partially depending on https rather than http would count as hiding the pages, even if by accident.

    So the story (as stated in the headlines) is correct. Sort of.

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  • (Score: 2) by captain normal on Thursday February 21 2019, @07:46PM

    by captain normal (2205) on Thursday February 21 2019, @07:46PM (#804665)

    Maybe it depends on which browser you are using. For instance, Google has begun requiring one to give permission to access http only sites.

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