False Claims about Climate Change causes
(1) The Associated Press Says:
"North Sea water temperatures have climbed 1 degree Fahrenheit over the past 100 years, and that has shifted currents, carrying a major food source, plankton, away from the cod, said scientist Chris Reid of the Partnership for Observation of the Global Oceans in Plymouth, England.
"The only way that these increases can be explained is by greenhouse gas emissions," Reid said. In their larval stage, the cod feed on the minute plants and animals known as plankton. Chances of survival without them are slim. North Sea cod that do survive today are smaller and less successful at mating and reproducing, Reid explained. In addition, warmer temperatures increase cod metabolism and the larvae's need for nutrition, he and other marine scientists noted in a 2003 research paper.
Sky Comments: Water temperature in the northern hemisphere always increases during interglacial periods. Temperatures: "Global average sea level in the last interglacial period (about 125,000 years ago) was likely 4 to 6 m higher than during the 20th century, mainly due to the retreat of polar ice. Ice core data indicate that average polar temperatures at that time were 3 to 5°C higher than present, because of differences in the Earth’s orbit."
The Quote above was taken from: INTERGOVERNMENTAL PANEL ON CLIMATE CHANGE
Climate Change 2007: The Physical Science BasisSummary for Policymakers vContribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change Page 8 of 21
We must remember firstly that humans did not significantly add carbon to the atmosphere in the previous interglacial period and yet, as quoted above, temperatures in Greenland were higher than at present. There is no way to accurately separate out the natural glacial/interglacial 100,000 year cyclic rise in temperature from the human effects on the greenhouse gasses. Until we can accurately accomplish this, one must be careful with statements such as the above "The only way" implying certainty. There simply is no certainty. Orbital forcing data comparisons of 12,000 year ago and 112,000 years ago do not correlate and I don't believe there is a high degree of agreement among scientists as to the relative weighting to be given to the effects of obliquity, eccentricity and precesion on global temperature highs and lows. Surely this research must proceed with the highest intensity and priority if we are to choose the most effective strategy to counter the effect of increased carbon (methane, CO2, and nitrous oxide) emissions.
(2) The Associated Press says:
"Scientists say rising sea temperatures worldwide are causing more coral bleaching — the draining of color when the fragile animals that form reefs become stressed and spew out the algae that give coral its color and energy to build massive reef structures.
Oceans are also absorbing more carbon dioxide, increasing their acidity and eroding coral's ability to build reef skeletons."
Sky Comments:
Afraid not:
"Another process, called "the biological pump," transfers CO2 from the ocean's surface to its depths. Warm waters at the surface can hold much less CO2 than can cold waters in the deep.
"This is the 'soda bottle on a warm day' effect," says Agassiz professor of biological oceanography James McCarthy, "and is not unique to carbon dioxide; it applies to all gases dissolved in water. There is a higher capacity to hold a gas with a lower temperature than with a higher temperature."
This means that when deep ocean waters rise to the surface as part of normal ocean-circulation patterns, the water heats up and actually releases CO2."
The quote above taken from:
The Ocean Carbon Cycle http://www.harvardmagazine.com/on-line/1102198.html
Occasions of invalid claims such as the one above are harmful because they add ammunition to the cause of those trying to deflect and defeat efforts to stem the increased flow of human caused greenhouse gasses.
http://news.yahoo.com/s/ap/20070331/ap_on_sc/climate_species_impactThis report was written by AP correspondents Charles J. Hanley, New York; Ben Fox, San Juan; Rohan Sullivan, Sydney; Karl Ritter, Stockholm; Beth Duff-Brown, Toronto; Courtney French, London; and Heidi Vogt, Dakar.
Saturday, 31 March 2007
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