about parameter IYEAR_AD

[yangqian12345@sina_com]

hello,everyone:
How to chose a suitable value for the parameter iyear_ad, which is the year
based on which orbital parameters are calculated in CAM ? because I got different result by choose different iyear_ad.
If I modeling between 1960-2000,How to set the iyear_ad is correct? Would it make a difference to chose 1970 instead of 1950, for example ? Any ideas on this will be appreciated. Thanks in advance.

 

[rneale]

How different were your result as the iyear_ad parameter should make only a very minute difference when it is changed by only 20 years?

 

[yangqian12345@sina_com]

Thanks, The difference of variable such as t or ts is very big although of little difference of parameter iyear_ad at the same year, I compare this at the same year.
So I don't know how to set the parameter of iyear_ad is right in the modeling?