"1. The Mount Pinatubo Particle Model shows that the initial atmospheric flow of erupted fine ash and sulfur oxide was from Subsequently, the prevailing westerlies dispersed the material to higher latititudes a. east to west b. west to east 2. The Mount Pinatubo Particle Model shows that within two months of the 1991 event, eruption products from the point source (15.1N, 120.4E) spread around the globe -- a.only in the tropical latitudes b.only in the Northern Hemisphere c.from tropical to polar latitudes in the Northern and Southern Hemispheres Particle model for June 15, 1991 Download