Originally posted by DA Morgan:
dehammer you are just plain wrong.
Measurements from tree rings correlated with measurements from ice cores correlated with measurements from the deep oceans correlated with measurements of ocean level correlated with temperature measurements correlated with many other factors over many years all substantiate the exact same thing.
The overwhelming majority of meterologists and other scientists have concluded that global warming is a fact and have found that a substantial part clearly correlates with human activities. Your argument floats like a lead balloon. Give it up as you are just looking laughably foolish.
tree rings are only good for the life of the tree. since there are no trees from preice age, that doe not give a long enough time frame.
the thing about ice cores and tree rings is that they give only part of the picture. both are limited to the current ice age.
meteorologist that do study the long term ice cores will tell you that we are in a interglacerial period. geologist that study glaceral deposits will tell you that the ice age has had glacial periods (ice sheets extending) and interglacieral periods (ice sheets retreating). this is not the first time during this ice age that we have had a interglacieral period. nor is it the farthest that the ice sheet have melted. nor are they melting that much faster. the ones that say that man is the sole cause are not looking past the begining of this interglacerial period. most of them are not willing to note that the interglacerial period started before man was capable of doing that much damage to the enviroment.
as to all geologist not understanding what im saying. check this out
Lecture 24.
The Historical Geography & Biogeography of Tidal Salt Marshes
Key words: Geography, Biogeography: The Extent & Distribution of Marshlands (Distinctive Landscapes & Ecosystems)
The Extent & Distribution of Marsh Organisms
Historical
Past, Present, and Future
Tidal Marshes vs. Salt Marshes
Slide 1: Sea level fluctuations on varying timescales. In the last 20,000 years sea level has risen approximately 120 m.
http://geography.berkeley.edu/ProgramCourses/CoursePagesFA2002/Geog40/Geog40.Week10.html it shows that in the past the sea lvls have been both lower and higher than they are now, and that covers times before man rising to two feet.
you will note, unless you refuse to see, that the sea change in the last 10 k years have actually been rather mild compared to the 10 k just before that. i do believe that was little pre industrialization period.
"There is no way of knowing for sure how many humans there were long ago, but there are estimates that we numbered about 4 to 5 million around the dawn of agriculture."
http://www.sustreport.org/resource/es_timeline.html less than 5 million ppl on the entire planet 10000 years ago. spread over the entire world, including the americas. much of them incapable of doing more tool working than putting flint on a shaft. while flint may be a good choise for an arrow head, it would have taken a long time to clear much from a forest to make a large farm. concidering that most of the space needed for farming was prairie anyway, why whould they have wasted their time cutting down trees for farm land. most of the trees cut down were use for home, which usually held large families. since most of the ppl before 8000 years go traveled year to year, their homes were generally made from light woods making them moveable. these trees would have been quick to be replaced by the forest.
in otherwords man did not creat the interglacerial period. he did not cause the majority of ocean rise. if he has acclerated it in the last 200 years, its hard to tell.
