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Lett., VOL. 29, NO. 15, 1718, 10.1029/2002GL014903). [Kiminori Itoh] 9-938 A 44:30 44:40 While NAO variability as seen in recent decades is not the norm in model control runs, Cooper and Gordon (2002) conclude Cooper and Gordon (2002) note a period in the HadCM3 control run with increasing that the magntidue of the trend is not NAO and a number of associated aspects of ocean variability, very similar to observations consistent with the observations, since 1960.

Although this mechanism may not be welcome by the climate community, it cannot be neglected. [Kiminori Itoh] 9-998 A 47:9 47:22 The discussion p 9-48 lines 52-55 is relevant here. I know there has been a lot of new Yin results now reported.

(I am not talking about the latter half of the 20th century.) [Kiminori Itoh] 6-263 A 3:35 3:36 Strongly agree with this bullet point. Noted [Michelle Koutnik] 6-264 A 3:35 3:36 In fact there is evidence that the cycles in the Northern and tropical Atlantic are not Noted reproduced, either in terms of frequency or phase, in the S.H. - a stronger statement is thus possible.

Reference added. luminosity change had been ca. 0.1%. [Kiminori Itoh] 6-1483 A 33:30 34:13 A sub-section heading relating to 'solar irradiance changes' or somesuch would help. Noted. [Bryant McAvaney] 6-1484 A 33:30 34:32 Please coordinate this subsection on solar and volcanic forcing with chapter 2.

This kind of relation may be useful because it may solve the discrepancy between the surprisingly small change in the solar luminosity and the large fluctuation in the global historical temperature records (Esper et al, 2002; Moberg et al., 2005). [Kiminori Itoh] 8-566 A 39:43 Section 8.4.1. This is an interesting section. Has there been an improvement in the Noted. To our knowledge this has not simulation of the NAM and SAM with the increased horizontal and vertical resolution, been systematically addressed in the and improved dynamical cores, in new models compared with those in the TAR?

Thus, the conventional results based on large contribution of CO2 are very doubtful and not convincing now. [Kiminori Itoh] Confidential, Do Not Cite or Quote Chapter 9: Batch AB (11/16/05) Page 69 of 186

It shows several important points; 1) the climate sensitivity of models tend to be too large; 2) among models in TAR only one out of ten gives sensitivity patterns similar to their estimation; 3) the volcanic eruption might not be appropriate to estimate general climate sensitivity. [Kiminori Itoh] 9-1188 A 56:57 57:1 Note that Figure 8.6.2 does not show results from Soden et al (2002) but from Forster and Reference changed, thanks.

Thus, the readers of the IPCC report will feel curious if such questions Introduction are neglected, and hence, the value of the report might be adversely affected. [Kiminori Itoh] 10-28 A 0:0 This chapter summarizes an incredible amount of model output and data and I like in The uncertainty in CO2 concentration particular the multi-model figures.

Suggestions along this line will show the direction of future climate researches, and worth to note somewhere in the report. [Kiminori Itoh] 2-52 A 0:0 This chapter stresses the importance of radiative forcings, in particular TOA radiative Not clear what the question is.

Thus, the readers of the IPCC report will feel strange if such questions are neglected, and hence, the value of the report might be adversely affected. [Kiminori Itoh] 2-380 A 7:43 7:43 This section should be moved to follow the Chemically and Radiatively Important Gases Rejected. Idea discussed.