Combination of the Equatorial Atmosphere Radar _ Radio Acoustic Sounding System (EAR-RASS) in Determining a Fine Structure of Total Precipitable Water (TPW) over Kototabang, West Sumatera, Indonesia

Humanosphere Science School 2017; 7th International Symposium for a Sustainable Humanosphere

地球科学;经济学

Hermawan, E.^1 ; Wahab, F.M.A.^2

Center of Atmospheric Science and Technology, Indonesian National Institute of Aeronautics and Space (LAPAN), Jln. Dr. Djundjunan No. 133, Bandung

40173, Indonesia^1

Geophysics and Meteorology Department, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University (FMIPA IPB), Kampus IPB, Jln. Meranti, Babakan, Dramaga, Jawa Barat, Bogor

16680, Indonesia^2

关键词: Boundary layer radar;    Cross correlation function (CCF);    Equatorial atmosphere radar;    Lower troposphere;    Radio acoustic sounding systems;    Total precipitable water;    Vertical profile;    Virtual temperature;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/166/1/012029/pdf
DOI  :  10.1088/1755-1315/166/1/012029

来源: IOP

【 摘 要 】

This study is mainly concerned an application the combined of the Equatorial Atmosphere Radar (EAR) and Radio Acoustic Sounding System (RASS) in determining a fine structure of Total Precipitable Water (TPW) in the lower troposphere at Kototabang, West Sumatera (0.20°S; 100.32°E) during the CPEA I Campaign started from April 10 to May 9, 2004. It looks possible, since EAR-RASS is designed specially to detect the wind at three dimensional direction and virtual temperature with good time and spatial height resolution. By applying the Weisner technique (1970), we found a fine structure of TPW vertically during the above period. While, by applying the Cross-Correlation Function (CCF), we found an a goog agreement between TPW and Optical Rain Gauge (ORG). In the same time, we analyzed the Boundary Layer Radar (BLR) to investigate the updraft and downdraft air mass activities from surface up to 5 km. We found the consistency of BLR, RASS and radiometer data when we investigated the vertical profile of TPW. Futhermore, we found the time variation of TPW, especially on April 24 and May 5, 2005 are about 0.43 and 0.35, respectively. Detailed results of this study are discussed in this paper.