Although scientists still have a lot to learn about the mesosphere and its effect on weather at the earth's surface, a few interesting things have been noted by scientists Special clouds sometimes form in the mesosphere These clouds are much higher than normal clouds, and they only form over the earth's poles. Another interesting event that occurs in this part of the atmosphere is lightning. This lightning is different than lightning in the lower atmosphere. It flashes in the sky more than 40 kilometers above storms in the troposphere.