Research of long-term variability of tropopause characteristics on the radiosonde data above the Russian Federation
This work is devoted to the analysis of some climatic tropopause parameters, reflecting its long-term mode over the territory of Russian Federation, based on the AEROSTAB radiosonde data. The review of some publications about tropopause as indicator of climate change, is provided. Calculations of an annual variation of climatic tropopause characteristics for the period about 1978-2007 for a group of stations of the Russian Federation with long-period series have been performed. Estimations of linear trends of tropopause characteristics for each of the considered stations are analyzed. Features of an annual cycle of trends are considered. Character of trends of height and temperatures for the bottom border of tropopause (polar) corresponds to conception about climate warming.