1 In some months, the Ides is on the 15th, and in others, it is the 13th. 2  It's supposed to be on the day of the full moon. [See Roman Calendar.]. 3  March's Ides marked the beginning of the consular year: The two annually-elected Roman consuls took office on the Ides from c. 220 B.C. to 153.
In the case of Mount Pinatubo, the result was a measurable cooling of the Earthâs surface for a period of almost two years. Because they scatter and absorb incoming sunlight, aerosol particles exert a cooling effect on the Earthâs surface.The Pinatubo eruption increased aerosol optical depth in the stratosphere by a factor of 10 to 100 times normal levels measured prior to the eruption.ecause they scatter and absorb incoming sunlight, aerosol particles exert a cooling effect on the Earthâs surface. The Pinatubo eruption increased aerosol optical depth in the stratosphere by a factor of 10 to 100 times normal levels measured prior to the eruption.
Mt. Pinatubo is a volcano that erupted in 1991 in the Philippines. This eruption was a shock to the world because this particular volcano had been inactive for a long period of time. Not only did it erupt, which was unexpected, but it was a large explosion and left a huge devastating impact.t. Pinatubo is a volcano that erupted in 1991 in the Philippines. This eruption was a shock to the world because this particular volcano had been inactive for a long period of time. Not only did it erupt, which was unexpected, but it was a large explosion and left a huge devastating impact.