Global Warming

  2010 JUN 21 - (VerticalNews.com) -- "In a previous paper we presented an update of the highly referenced climate classification map, that of Wladimir Koppen, which was published for the first time in 1900 and updated in its latest version by Rudolf Geiger in 1961. This updated world map of Koppen-Geiger climate classification was based on temperature and precipitation observations for the period 1951-2000," scientists in Vienna, Austria report ...read more

  2010 JUN 14 - (VerticalNews.com) -- "Though presently small in magnitude, aviation's future impact on climate will likely increase with the absence of effective mitigation measures. With the exception of CO2 emissions, climate impacts of aviation emissions are quite uncertain, and there are scientific gaps that need to be addressed to guide decision making," investigators in the United States report.

  "An objective of the Next Generation Air Transportation System is to limit or reduce aviation's impact on climate. Therefore, the Federal Aviation Administration has developed the Aviation Climate Change Research Initiative (AC-CRI) to address key scientific gaps and reduce uncertainties while providing timely scientific input to advance and implement mitigation measures," wrote G.P. Brasseur and colleagues ...read more

  2010 JUN 14 - (VerticalNews.com) -- According to recent research published in the journal Bulletin of the American Meteorological Society, "This paper summarizes the assessment of the current state of knowledge, areas of uncertainties, and recommendations for future efforts, regarding the optical and radiative properties of contrails and contrail cirrus, which have been reported in two detailed subject-specific white papers for the Aviation Climate Change Research Initiative undertaken by the U. S. Federal Aviation Administration. To better estimate the radiative forcing of aircraft-induced cloudiness, there is a pressing need to improve the present understanding of the optical properties of nonspherical ice crystals within contrails and contrail cirrus, and to enhance the global satellite detection and retrieval of these clouds. ...read more