HR: 1340h
AN: A23B-0939    [Abstracts]
TI: Climatological Statistics of the Tropopause over China based on Radiosonde Data and its Relation between Total ozone
AU: * Bian, J
EM: bjc@mail.iap.ac.cn
AF: Institute of Atmospheric Physics, Chinese Academy of Sciences, Dewai Qijiahuozi, Beijing, 100029 China
AB: Tropopause data from 1960s to 2002 based on radiosonde provided by Climatic Data Center, National Meteorological Information Center, China Meteorological Administration are used to analyze the statistics of the tropopause over China. Analyses show that the seasonal variation of tropopause height and temperature depends not only on the latitude, but also the longitude. The tropopause height is higher and correspondingly the tropopause temperature is colder in the western part of China, especially in the winter. The long-term change of the tropopause height over China is dominated by positive trend, and the long-term change of the tropopause temperature is mainly negative. The trend over the south-west part of China is larger than other areas: the height trend here is over 150 m/dec, and the temperature trend is below -0.8 K/dec. The relation between the tropopause height and total ozone column is also analyzed.
DE: 0340 Middle atmosphere: composition and chemistry
DE: 0341 Middle atmosphere: constituent transport and chemistry (3334)
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005