How to classify cloudy environment based on Irradiance curves?

Hi Paul,


I required some help. I am attaching a SANDIA report with this question. have a look at page no. 38-39. A number of actual GHI Irradiance graphs are given. Is there a way where I can classify certain Irradiance patterns for some perticular kind of cloudy environment?

In details:

I have developed my own MATLAB codes for generation of clear sky Irradiance, and I succeeded there. Now i want to classify actual Irradiance curves such that, if I say, for example, 'cloudy with little variations' then it will generate (derive) certain curve from clear sky GHI. In this way, I want to feed 'environment' as input and want to get actual irradiance as output. Can you suggest any resources for such kind of classification?


I could generate variations of different amplitude and frequencies which look like actual curves as of those shown in report. So only thing I need to know is which curve is generated under which environmental conditions.


Thanks.

Regards,
Nisarg.