Analysis of Temperature Trends and Variations in the Arabian Peninsula’s Upper Atmosphere  

作　　者：Abdullrahman H. Maghrabi Abdullrahman H. Maghrabi(National Institute for Climate Change, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia)

机构地区：[1]National Institute for Climate Change, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia

出　　处：《Atmospheric and Climate Sciences》2024年第1期85-100,共16页大气和气候科学（英文）

摘　　要：In this study, the trends of upper-air temperatures are analysed by utilising radiosonde observations for the barometric levels at 700, 500, 300, 200, 150, 100 and 50 hPa from five meteorological stations within the Arabian Peninsula from January 1986 to August 2015. The mean monthly variations of the temperatures at these levels are characterised and established. The magnitudes of the annual trends of the mean temperatures for each site for the selected barometric levels are studied and statistically tested using Mann-Kendall rank statistics at different significance levels. The temperature trends at different pressure levels show that the upper troposphere and lower stratosphere are warming, while the middle troposphere is cooling which is consistent with the findings of other studies. The variations in upper air temperature observed in this study can be attributed to a range of factors, including increasing greenhouse gas concentrations, changes in atmospheric circulation patterns, variations in solar activity, aerosols and volcanic eruptions, and land use and land cover change.In this study, the trends of upper-air temperatures are analysed by utilising radiosonde observations for the barometric levels at 700, 500, 300, 200, 150, 100 and 50 hPa from five meteorological stations within the Arabian Peninsula from January 1986 to August 2015. The mean monthly variations of the temperatures at these levels are characterised and established. The magnitudes of the annual trends of the mean temperatures for each site for the selected barometric levels are studied and statistically tested using Mann-Kendall rank statistics at different significance levels. The temperature trends at different pressure levels show that the upper troposphere and lower stratosphere are warming, while the middle troposphere is cooling which is consistent with the findings of other studies. The variations in upper air temperature observed in this study can be attributed to a range of factors, including increasing greenhouse gas concentrations, changes in atmospheric circulation patterns, variations in solar activity, aerosols and volcanic eruptions, and land use and land cover change.

关 键 词：Upper-Air Temperature Variability Long-Term Trend Arabian Peninsula Climate Change Mann-Kendell 

分 类 号：P46[天文地球—大气科学及气象学]