...out that some significant part of these changes are also a reflection of natural variability. . . . Because there is considerable uncertainty in current...to future adjustments (either upward or downward)." The report noted that while the full implications of climate change remain unknown, the panel "generally...

...key finding for those with the difficult task of developing policy and legislation is the following: Because there is considerable uncertainty in current...tentative and subject to future adjustments (either upwards or downwards). The National Academy of Sciences also sought to "articulate more clearly the...

...temperature increases are uncertain: "Because there is considerable uncertainty in current understanding or how the climate system varies naturally and reacts...should be regarded as tentative and subject to future adiustments (either upward or downward)." (p. 1) "Much of the difference in predictions of global warming...

...increase, changes are likely to occur. The US National Research Council has cautioned, however, that "because there is considerable uncertainty in current...aerosols, current estimates of the magnitude of future warmings should be regarded as tentative and subject to future adjustments (either upward or downward)...

...considerable uncertainty in current understanding of how the natural variability of the climate system reacts to emissions of greenhouse gases and aerosols, current estimates of the magnitude and impacts of future wanning are subject to future adjustments (either upward or downward). Nonetheless,...

...Overview of the Climate Action Report quoting the National Research Council's recent caution: "[BJecause there is considerable uncertainty in current understanding...aerosols, current estimates of the magnitude of future warmings should be regarded as tentative and subject to future adjustments (either upward or downward)."...

..."Because there is considerable uncertainty in current understanding of how the climate system wies naturally and reacts to emissions of greenhouse gases...aerosols, current estimates of the magnitude of future wanning should be regarded as tentative and subject to future adjustments (either upward or downward)."...

...extent of any damage suffered by vulnerable human populations and ecosystems later in this century. Because there is considerable uncertainty in current...to future adjustments (either upward or downward). Reducing the wide range of uncertainty inherent in current model predictions of global climate change...

...Questions, the National Academy of Sciences cautioned: "Because there is considerable uncertainty in the current understanding of how the climate system varies...to future adjustments (either upward or downward)." And the United States' recent Climate Action Report — 2002, that was submitted to the United Nations...

...ecosystenu later In this century. Because thci c is considerable uncertainty in current undorwvndmg of bow the climate system varies naturally and reacts to...and subject to future adjustments (either upward or downwardl. Reducing the wide range of uncertainty inherent in current model predictions of global climate...