%0 Journal Article %A DU Yibo1 %A ZHANG Qiang1 %A 2 %T Global Distribution Characteristics and Variation Tendency of Tropopause Height and Temperature Under the Background of Climate Warming %D 2017 %R 10.11755/j.issn.1006-7639(2017)-02-0199 %J Journal of Arid Meteorology %P 199-207 %V 35 %N 2 %X

Based on the monthly average data of ERA-Interim and NCEP reanalysis from January 1979 to June 2014, the tropopause height and temperature were estimated, and their temporal and spatial distribution and variation tendency were analyzed. Results are as follows:(1) The spatial distributions of tropopause height and temperature were greatly controlled by the changes of latitude, especially the changes of tropopause height and temperature in middle and high latitudes with latitude were obvious. (2) The global tropopause height generally rised during 1979-2014, and the pressure of tropopause dropped about 1-2 hPa per 10-year, while the tropopause temperature decreased with falling rate about 0.1 ℃ per 10-year. (3) The tropopause height and temperature had obvious seasonal changes, there was seasonal coordination between the height and temperature of tropopause, and the change in the northern hemisphere was more complex than that in the southern hemisphere. (4) The tropopause height from NCEP reanalysis data was about 1 km higher than that from ERA-Iterim data on the whole, while the tropopause temperatures from two kinds of data in the subtropics to equator were close, which was stable from 192 K to 200 K, but the distribution of tropopause temperature in middle and high latitudes of the southern hemisphere and northern hemisphere was significantly different. (5) In addition to the local region in the northern hemisphere, the increase of tropopause height was obviously positive related with the drop of tropopause temperature, especially their correlation coefficients were over 0.8 in the tropics and high latitudes of the southern hemisphere.

%U http://www.ghqx.org.cn/EN/10.11755/j.issn.1006-7639(2017)-02-0199