(AP) An early version of the ever-changing draft report said "observations of coherent warming in the global atmosphere, in the ocean, and in snow and ice now provide stronger joint evidence of warming."

And the early draft adds: "An increasing body of evidence suggests a discernible human influence on other aspects of climate including sea ice, heat waves and other extremes, circulation, storm tracks and precipitation."

The world's global average temperature has risen about 1.2 degrees Fahrenheit from 1901 to 2005. The two warmest years on record for the world were 2005 and 1998. Last year was the hottest year on record for the United States.

The report will draw on already published peer-review science. Some recent scientific studies show that temperatures are the hottest in thousands of years, especially during the last 30 years; ice sheets in Greenland in the past couple years have shown a dramatic melting; and sea levels are rising and doing so at a faster rate in the past decade.

Also, the second part of the international climate panel's report — to be released in April — will for the first time feature a blockbuster chapter on how global warming is already changing health, species, engineering and food production, said NASA scientist Cynthia Rosenzweig, author of that chapter.

As confident as scientists are about the global warming effects that they've already documented, they are as gloomy about the future and even hotter weather and higher sea level rises. Predictions for the future of global warming in the report are based on 19 computer models, about twice as many as in the past, Solomon said.

In 2001, the panel said the world's average temperature would increase somewhere between 2.5 and 10.4 degrees Fahrenheit and the sea level would rise between 4 and 35 inches by the year 2100. The 2007 report will likely have a smaller range of numbers for both predictions, Pachauri and other scientists said.

The future is bleak, scientists said.

"We have barely started down this path," said chapter co-author Richard Alley of Penn State University.

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