209.200.74.155
BRIEF OF AMICI CURIAE CLIMATE SCIENTISTS DAVID BATTISTI, WILLIAM E. EASTERLING, CHRISTOPHER FIELD, INEZ FUNG, JAMES E. HANSEN, JOHN HARTE, EUGENIA KALNAY, DANIEL KIRK-DAVIDOFF, PAMELA A. MATSON, JAMES C. MCWILLIAMS, MARIO J. MOLINA, JONATHAN T. OVERPECK, F. SHERWOOD ROWLAND, JOELLEN RUSSELL, SCOTT R. SALESKA, EDWARD SARACHIK, JOHN M. WALLACE, AND STEVEN C. WOFSY IN SUPPORT OF PETITIONERS
(snip--I removed a couple footnotes, the formatting was screwed up, so see the document for yourself...)
It is likely or very likely that human-induced increases in these greenhouse gases are already causing global climate to warm. Human activities likely caused most of the approximately 0.6 oC (1.1 oF) rise over the 20th century. The mean ocean temperature has risen by 0.05 oC (0.09 oF), global average sea level has risen by 0.1 to 0.2 meters (1/3 to 2/3 feet) over the 20th century, and snow cover and Arctic ice have decreased by about 10% and 10-15%, respectively, since the late 1960s (when data first became available for this measurement). A variety of other climate factors are changing consistent with warming induced by greenhouse gases. By contrast, we know of no measures of climate on the global scale that indicate cooling.
It is virtually certain that what has been observed so far is only the beginning, and that continued greenhouse gas emissions along current trajectories will cause additional warming of the earth system as a whole. The average time for removal from the atmosphere of added carbon dioxide is measured in centuries. It is very likely that such perturbation would cause the rate of surface warming and sea level rise in the 21st century to be substantially larger and faster than that experienced in the 20th century, without precedent in the past 10,000 years.
(snip) August 31, 2006
------------------ They're the experts!
Say, one of those fellows wrote a textbook I used in school, Wallace and Hobbs for ATM 301, how about that.
amazon.ca
This is a great text book! Later there is more calculus and a lot of that went over my head--but some of the stuff in this book stuck. |