摘要
利用 1998年青藏高原地面Doppler雷达资料和TRMMPR资料进行对比分析 ,分别从不同角度出发 ,分析了Doppler雷达和TRMMPR所测云区在回波结构和回波强度等方面的相同和差异之处 。
By analyzing Doppler radar data and TRMM PR data of Qinghai-Xizang Plateau in 1998, we compare the difference and similarity of cloud observation by ground based Doppler radar and TRMM PR in many different aspects, such as echo structure, echo intensity and precision of rainfall measuring. Some causes are given to interpret these deviations.Generally, the echo structure observed by TRMM PR is very similar with that observed by ground based Doppler radar, but the echo intensity observed by TRMM PR is greater than that observed by ground based Doppler radar. Echo intensity observed by TRMM PR has systematic deviation of 2~3 dB with that observed by ground based Doppler radar.Because of the different observational mode and transmittal wavelength of TRMM PR and ground based Doppler radar, the scatter property for those cloud particle of the different phase and spatial direction is also different. Therefore, the deviations of cloud observation is caused.
出处
《高原气象》
CSCD
北大核心
2001年第4期345-353,共9页
Plateau Meteorology
基金
国家自然科学基金项目 ( 4 9875 0 0 )
中科院"知识创新工程 2 10 0 41项目"资助
