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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: Maurice Winn who wrote (10396)	3/14/2007 4:50:55 PM
From: Wharf Rat	Read Replies (1) \| Respond to of 36917

"Global Warming religious studies" Typical Egyptian speak... "Show that Earth is not freezing, crystallizing, cooling as the atmosphere is stripped by the ecosphere." CO2 up to 384 ppm. Global temperature records happening. The IPCC has been studying climate change for quite some time. This year’s report is the 4th in a series. There were 152 lead authors, and another 400 scientists served as contributing authors. Not too shabby. Here’s what this 600-person IPCC consensus report concluded about humans and global warming. I am presenting all of the main conclusions from the Executive Summary for Policy Makers. The language is a little stiff, but it's worth reading through once before you read about how the Republicans are distorting the IPCC's conclusions. "Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years (see Figure SPM-1). The global increases in carbon dioxide concentration are due primarily to fossil fuel use and land-use change, while those of methane and nitrous oxide are primarily due to agriculture. The understanding of anthropogenic warming and cooling influences on climate has improved since the Third Assessment Report (TAR), leading to very high confidence that the globally averaged net effect of human activities since 1750 has been one of warming, with a radiative forcing of +1.6 [+0.6 to +2.4] W m-2. ============== The IPCC reports are fairly candid about what we collectively know and where the uncertainties probably lie. In the first category are findings that are not in dispute, not even by les refusards: • Concentrations of the greenhouse gases carbon dioxide, methane, ozone, and nitrous oxide are increasing owing to fossil-fuel consumption and biomass burning. Carbon dioxide has increased from its pre-industrial level of about 280 parts per million (ppmv) to about 380 ppmv today, an increase of about 35 percent. From ice-core RECORDS, it is evident that present levels of CO2 exceed those experienced by the planet at any time over at least the past 650,000 years. • Concentrations of certain anthropogenic aerosols have also increased owing to industrial activity. • The earth’s average surface TEMPERATURE has increased by about 1.2°F in the past century, with most of the increase occurring from about 1920 to 1950, and again beginning around 1975. The year 2005 was the warmest in the instrumental record. • Sea level has risen by about 2.7 inches over the past 40 years; of this, a little over an inch occurred during the past decade. • The annual mean geographical extent of arctic sea ice has decreased by 15 to 20 percent since satellite measurements of this began in 1978. Message 23212625 =============== Warmest Year on Record From Rachelle Oblack, Global Warming and Yearly Temperature Rises in the United States In the footrace for the climate change champion of the world and the title Warmest Year EVER (in current records), 2006 was trailing behind 1998 and 1934 by a mere 0.07°F (0.04°C). But in a sudden last minute victory effort 2006, fueled by a very warm December, was declared the victor. Marked as the warmest year on record, 2006 had an annual average temperature of 55°F which is 2.2°F (1.2°C) above the 20th Century mean. Also participating in this race were the last nine years consecutively. Each of the last nine years has earned a spot in the rankings of the 25 warmest years on record. weather.about.com Atmosphere getting stripped? CO2 'highest for 650,000 years' By Richard Black Environment Correspondent, BBC News website Gas bubbles trapped in ice store valuable climatic information Current levels of the greenhouse gases carbon dioxide and methane in the atmosphere are higher now than at any time in the past 650,000 years. That is the conclusion of new European studies looking at ice taken from 3km below the surface of Antarctica. The scientists say their research shows present day warming to be exceptional... "We find that CO2 is about 30% higher than at any time, and methane 130% higher than at any time; and the rates of increase are absolutely exceptional: for CO2, 200 times faster than at any time in the last 650,000 years." news.bbc.co.uk =========== Global Temperature Highest in Millennia WASHINGTON - The planet's temperature has climbed to levels not seen in thousands of years, warming that has begun to affect plants and animals, researchers report in Tuesday's issue of Proceedings of the National Academy of Sciences. The Earth has been warming at a rate of 0.36 degree Fahrenheit per decade for the last 30 years, according to the research team led by James Hansen of NASA's Goddard Institute for Space Studies in New York. That brings the overall temperature to the warmest in the current interglacial period, which began about 12,000 years ago. commondreams.org Now I know , in your world, black is white and the sun shines at night and the moon during the day, but that is your world. Only one or 2 inhabitants.