Absence Of Clouds Caused Pre-human Supergreenhouse Periods
ScienceDaily, Apr. 11, 2008 — “In a world without human-produced pollution, biological productivity controls cloud formation and may be the lever that caused supergreenhouse episodes during the Cetaceous [sic] and Eocene, according to Penn State paleoclimatologists.
Kump and David Pollard, senior research associate, Earth and Environmental Systems Institute, looked for another way to create a world where mean annual temperatures in the tropics were above 100 degrees Fahrenheit and polar temperatures were in the 50-degree Fahrenheit range. Changing the Earth’s albedo — the amount of sunlight reflected into space — by changing cloud cover will produce supergreenhouse events, the researchers report April 11 in the journal Science.
According to the researchers, changes in the production of cloud condensation nuclei, the tiny particles around which water condenses to form rain drops and cloud droplets, decreased Earth’s cloud cover and increase the sun’s warming effect during supergreenhouse events.
Normal cloud cover reflects about 30 percent of the sun’s energy back into space. Kump and Pollard were looking for a scenario that allowed in 6 to 10 percent more sunlight.”
This is interesting to me because of my familiarity with the Book of Genesis, where it says things like …
Gen. 2:5b, 6 “… for the LORD God had not caused it to rain upon the earth, and there was not a man to till the ground. But there went up a mist from the earth, and watered the whole face of the ground.”
implying a significant difference in the world hydrological cycle prior to the Flood. Also,
Gen. 1:7 And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so.
There are also literary hints that the four seasons as we know them with their extremes of cold/ice/snow and hot had a definite beginning point in history. Some Bible commentators take this passage
“Gen 8:22 While the earth remaineth, seedtime and harvest, and cold and heat, and summer and winter, and day and night shall not cease.”
as a hint that there was a significant change in seasons after the Flood. A history buff that I debate with online mentioned this recently …
The Greek and Roman story of Persephone relates to the formation of seasons. Basically the Earth was supposedly “fruitful” all year round until Hades abducted Persephone to be “his wife” and as a result the Earth became barren ,while she was away ,either due to her being a goddess of fertility or her mother Demeter being one depending on the version of the story. The story continues to say that once she was returned to Earth, Hades tricked her into eating 6 (or 3 ) pomegranate seeds, which forced her to return to him for one season of the year (Winter) which is the supposed explanation of why nothing grows then. http://www.rantsnraves.org/showthread.php?p=257942#post257942
Some may laugh at literary info such as this, but some mainstream scientists are finding nuggets of truth mixed in with the mythical and questionable stuff. See my recent articles …
Some of you may be familiar with a fairly well known creationist book entitled “The Waters Above” (Joseph Dillow 1982) championed at the time by ICR and viewed as a serious possibility by creationists. The model was later shown to be flawed as everything would have been fried on earth. But at least Dillow was on the right track … i.e. he believed that there was literary evidence for a ‘supergreenhouse’ period on planet earth at some point in the past.
Apparently he was right although he was wrong about the exact mechanism and he would differ with these authors on how long ago this period occurred.