Your English is just great! Yes, the gas and soot from erupting volcanoes do influence the climate for short periods of time. The volcanoes erupting in Indonesia right now are not getting the media coverage they deserve. Nearly 100,000 people have been evacuated, airports are closed, and the images of ash covering everything are amazing.
Mike Gunson, atmospheric chemist and director of the Global Change project at NASA has a better answer:
Can one blast from a volcano affect readings over most of the globe for an extended time?
Overall, volcanoes release about 5 percent of the equivalent amount of CO2 released by humans. Quite small. However, about once every 20 years there is a volcanic eruption (e.g., Mt. Pinatubo, El Chichon) which throws out a tremendous amount of particles and other gases. These will effectively shield us enough from the sun to lead to a period of global cooling. They typically dissipate after about two years, but the effect is nearly global.
That said, I’m not sure where to find the estimates of how these two big volcanoes will affect climate. Climate “forcings” are not my area. Maybe JAXA?
I’m going to assume you’ve done a lot of research on climate, so I’ll just point you to some sources.
For climate science and some good maps, I’d check Woods Hole/USGS, MIT, and UMass.
Boston Harbor Association put out a brand new adaptation report, but on first glance it looks vague.
You might be surprised by calling the folks at Mass/DCR, they’re actually real friendly on the phone.
You may want to look into orgs that do disaster, conservation, and beach erosion management work on the Cape (possibly Manomet, but definitely check with MassDOT).
And I’m sure the Army Corps of Engineers has their hands in the harbor (the Corps websites are a nightmare, so be persistent. There are hidden gems!).
The City of Boston’s climate report is embarrassingly weak. But, you should scour the authors and sources of the report for leads.
VHB, an engineering firm, does a lot of work on infrastructure using climate data, and I believe they have several contracts with the City of Boston, Logan Airport (in fact, Logan and VHB hosted me on a tour of the airport’s infrastructure and facilities). VHB has a strong climate division, and they’re very friendly folks and if you ask nicely, they’ll send you some climate CDs and climate reports by mail.
And finally, check with MassPort Authority. You’ll run into roadblocks when calling them directly, so you should target specific people in the organization and be persistent. Nothing gets built in the harbor without MassPort’s blessing.
That’s all I got off the top of my head. Good luck and let me know how it goes!