Linda Mearns is an expert in regional climate change and its impacts. She draws on computer simulations to develop scenarios for decision makers who are preparing for the societal and environmental impacts of climate change. Mearns also investigates the effects of climate change on agriculture and on human health, particularly in relationship to the frequency of extreme weather events such as heat waves.
New insight into the origin of monsoons, the dynamics of aerosols and their potential use to cool the globe and how different industries uniquely impact atmospheric warming are the contributions of YCEI researchers at an upcoming forum on Global Climate and Atmospheric Modeling, Friday, September 21, at Kroon Hall. Researchers from Tokyo’s Todai University round out the 5-person forum with talks on the radiative forcing of aerosols in East Asia and a model of 100,000-year glacial-interglacial cycles.
Subpolar ocean gyres (large systems of rotating ocean currents) in the Southern Hemisphere are found poleward of the Antarctic Circumpolar Current near the Weddell and Ross Sea. They play a key role in the global energy and water budgets. These gyres are crucial for the transport of heat around the planet, as well as the distribution of nutrients and marine species. Thus, the subpolar gyres are important in the mixing and transformation of water masses. In a recent study, Dr.
Pearson and colleagues (2013) recently showed how the expansion of shrubs and trees in the Arctic could promote even further warming through a series of postive feedbacks. Their modeling study that estimates the future composition and distribution of vegetation across the Arctic indicated shrubs and trees could expand by as much as 50% over current levels by 2050.
Public discussions of climate change often focus on greenhouse gases and rising temperatures, but the most severe and immediate societal impacts of global warming are likely to be associated with changing hydrological conditions. Disruptions in water supply, extreme storms and record droughts may impact every aspect of rural and urban society: from agriculture and manufacturing to housing, energy and human health.