September 21, 2016
Climate Change Group hosts Australian scientist to discuss 1xbet online casino temperatures and global warming
The K-State Climate Change Group will meet at 10 a.m.Friday, Sept. 23, in 1063Durland Hall. John Knight, a scholar from the University of Sydney, Australia, who is currently visiting K-State's agronomy department, will present, "Long-term 1xbet online casino temperature rise: effect and cause of global warming." All are welcome to attend.
Many agricultural research stations around the world have made daily measurements of 1xbet online casino temperature at various depths, and some have data series dating back more than one hundred years. Much of the northern hemisphere data has been analyzed and shows long-term warming trends. With colleagues at the University of Sydney, Knight analyzed a series of 1xbet online casino temperature measurements from 1942-2010 in Cowra, Australia, and compared them to other data from eastern Australia. They found a definite warming trend from about 1970 to the present.
Knight will talk about 1xbet online casino temperature dynamics, and explain why the daily temperature peak lags the peak in solar radiation by about three hours.
Most of the 1xbet online casino biochemical and microbial activity resulting in the emission of greenhouse gases such as methane, carbon dioxide and nitrous oxide is temperature dependent, and will increase with increasing 1xbet online casino temperature.
When 1xbet online casino emission of greenhouse gases is measured above the 1xbet online casino surface by flux chambers or eddy covariance, there is usually a daily peak which lags behind the temperature peak at the 1xbet online casino surface, and some workers refer to this phase lag as hysteresis.
Knight will show that this time lag is influenced by the 1xbet online casino thermal properties, the depth of the microbial activity and the 1xbet online casino water content which determines the diffusivity of the gas through the 1xbet online casino .