In this task, you're given a sentence and your task is to generate a simplified sentence that focuses on lexical paraphrasing from the original sentence given in the input.
Q: events of 1816 january june known as the " year without a summer " in the northern hemisphere due to global cooling caused by the mount tambora volcanic eruption that had occurred in 1815.
A:
the phenomenon occured during the period of january to june in 1816 is known as " year without a summer " in the northern hemisphere . it was due to the global cooling that occurred as a result of volcanic eruption of the mount tambora in the year 1815.