Presenter(s): Isabella Cao − Journalism
Faculty Mentor(s): Dave Sutherland
Poster 144
Research Area: Natural/Physical Science
Low temperatures and the presence of moisture are conditions that allow for snowfall. When parcels of warm air containing moisture rise and cool, the water vapor condenses to form clouds. These clouds form precipitation, in the form of either water droplets or tiny ice crystals depending on surrounding air temperature. Precipitation and snowfall are a normal part of the hydrological cycle; however, global warming has changed the hydrological cycle and thus affects patterns of snowfall. A 4% increase in atmospheric moisture has been observed (warmer atmospheres holding 7% more moisture per 1°C). Many studies have been done on global warming’s contribution to dwindling snowpacks and high rates of snowmelt, however, few have studied heavy snowfall as an effect of climate change. Here I show patterns of decreased and increased snowfall in various regions. I found that warming of ocean surfaces and other water supplies can result in patterns of heavier snowfall. Japan predicts decreases in total winter snowfall, as well as an unusual heavy snowfall occurrence every 10 years. Further, I found that while most regions experience an overall decrease in snow, the distribution pattern changes significantly, with some places having much less or more more than usual. Climate change does not always result in immediate depletion of snow, but rather a continuous changing pattern that shows decreasing over time. This report could instigate more accurate portrayals of snowfall patterns, leading to more accurate studies. These findings will be useful in better utilizing water resources that rely on snowfall.