...over the last century have used a variety of new estimates of natural internal and externally forced variability. These are derived from instrumental data,...factors. These include the magnitude and patterns of long term natural variability and the time-evolving pattern of forcing by, and response to, changes...

...natural internal variability only. ' The vertical patterns of change are also inconsistent with tiose expected for solar and volcanic forcing. • Our ability...factors. These include the magnitude and patterns of long term natural variability and the time-evolving pattern of forcing by, and response to, changes...

...5.23). The IPCC 1995 Report32 therefore reached the cautious conclusion which is worth stating in full. Our ability to quantify the human influence on global...signal is still emerging from the noise of natural climate variability, and because there are uncertainties in key factors. These include the magnitude...

...climate." Note that this is the balance of evidence, NOT unambiguous proof The report points out that 'our ability to quantify the human influence on global...factors. These include the magnitude and patterns of long term variability . . . . " [Both these quotes are from p. 5 of the Summary for Policymakers.]...

...don't know for which we need more research, including, as they say in the IPCC report, "Our knowledge is currently limited because the expected signal is...factors. These include the magnitude and patterns of long term variability." And I agree with this too. However, I would just like to show a little bit...

...I can quote from page 5, it says "Our ability to quantify the human influence on global climate is limited because the expected signal is still emerging...and because there are uncertainties in key factors, etc." So, in other words, you think that it does but you are not sure? Mr. WATSON. They are two different...

...that considerable progress had been made in this respect since 1990. It went on to conclude that:55 Our ability to quantify the human influence on global...climate is currently limited because the expected [human induced climate change] signal is still emerging from the noise of natural [climate change]...

...to switch to natural gas, that investment may have to be written off. The IPCC reported in 1995 that our ability to quantify the human influence on global climate is currently limited because of numerous uncertainties. Given that, we have to ask does it make sense to move forward with the Kyoto...

...climate." The two sentences in the report which precede this statement are never quoted, but they state: "Our ability to quantify the human influence on global...factors These include the magnitude and patterns of long term variability and the time-evolving pattern of forcing by, and response to, changes in concentrations...

...socioeconomic information in the field of climate change. The most recent report of the IPCC concluded that: "Our ability to quantify the human influence on global...factors. These include the magnitude and patterns of long term natural variability and the time-evolving pattern of forcing by, and response to, changes...