Weather providers in search results - any idea how to become one?

[PaulM01]

Hi, as google are displaying more and more weather forecasts within results, we'd like to explore whether there's a possibility of exposing our api to google to allow them to use us as one of the providers for the data.

At the moment it appears they use weather.com, weather underground and maybe also accuweather (although I've not seen them mentioned for a while on there), but I'm not sure if this is some sort of commercial agreement, or whether it's simply that google have been given access to the api's from those providers in return for the link in the weather panel in the search results.

Does anyone have any information about this sort of thing (I assume weather isn't unique in this respect), or know of any way to contact google and find out at all please?

Thanks
Paul