The first step to solving a problem is to blame someone or something. In this case, it's all the aerosols and particulates that burning forests, jet condensation trails, and fossil fuels has dumped into the atmosphere. Throw in a few volcanoes for good effect. All that causes "global dimming", general cooling, and may conceivably precipitate another ice age through loss of albedo:
While these were popular theories 30 years ago, the current consensus is that more research dollars and political power transfers can be accomplished through global warming studies, which has temporarily buried these theories. Like global warming, much of the evidence is anecdotal observations, such as your unseasonably cold weather. I think it's time to resurrect these theories.
I suggest you turn lemons into lemonade. With little effort, you can convert this weather incident into a major ecological and climatic movement. Instead of attempting to transfer wealth and political power through the study of greenhouse gases, you can do the same with studies of particulates, aerosols, dust, smog, and ash. A movie, showing dramatic but hazy images, predicting the impending demise of the planet through global glaciation, should be produced. Don't forget to mention that Mars has global dust storms. You may have to wait until Nov 2008 to get the loser of the next presidential election to narrate the film. I suggest you spend the time creating research grant proposals to attract eminent authorities and researchers. Predicting increased health issues through inhaling all this junk is easy enough. The tie in to global warming is easy enough. Dumping large amounts of dust into the atmosphere is the SOLUTION to global warming. Fight technology with more technology.
You can probably get the alleged financial victims of the global warming movement (oil companies) to support your cause. However, the money is in research, endless studies, satellites, speaking tours, publication rights, and influence peddling. It might even get someone a Nobel Peace Prize for global awareness and general promotion.
What's lacking is a catchy name. "Global Warming" and "Climate Change" have an alarmist apocalyptic ring to them. Something equally dramatic should be selected. "Global Dusting" just doesn't sound right. Although awkward, perhaps "Global Loss of Albedo" will suggest to the GUM (great unwashed masses) that this is a serious loss of something they never knew they had. Dunno. Hire a PR company.
As always, don't forget to conclude all publications with "More research is necessary" to insure continued funding.