Detection of Water Cloud Microphysical Properties Using Multi-scattering Polarization Lidar

Jiaming Xie; Xingyou Huang; Lingbing Bu; Hengheng Zhang; Farhan Mustafa; Chenxi Chu

추천

검색

질문

자료유형: 학술저널

저자정보: Jiaming Xie (Nanjing University of Information Science and Technology) Xingyou Huang (Nanjing University of Information Science and Technology) Lingbing Bu (Nanjing University of Information Science and Technology) Hengheng Zhang (Nanjing University of Information Science and Technology) Farhan Mustafa (Nanjing University of Information Science and Technology) Chenxi Chu (Jiangsu Meteorological Observation Center)

저널정보: 한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.4 No.3

발행연도: 2020.6

수록면: 174 - 185 (12page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

Multiscattering occurs when a laser transmits into dense atmosphere targets (e.g. fogs, smoke or clouds), which can cause depolarization effects even though the scattering particles are spherical. In addition, multiscattering effects have additional information about microphysical properties of scatterers. Thus, multiscattering can be utilized to study the microphysical properties of the liquid water cloud. In this paper, a Monte Carlo method was used to simulate multi-scattering transmission properties of Lidar signals in the cloud. The results showed the slope of the degree of linear polarization (SLDLP) can be used to invert the extinction coefficient, and then the cloud effective size (CES) and the liquid water content (LWC) may be easily obtained by using the extinction coefficient and saturation of the degree of linear polarization (SADLP). Based on calculation results, a microphysical properties inversion method for a liquid cloud was presented. An innovative multiscattering polarization Lidar (MSPL) system was constructed to measure the LWC and CES of the liquid cloud, and a new method based on the polarization splitting ratio of the Polarization Beam Splitter (PBS) was developed to calibrate the polarization channels of MSPL. By analyzing the typical observation data of MSPL observation in the northern suburbs of Nanjing, China, the LWC and CES of the liquid water cloud were obtained. Comparisons between the results from the MSPL, MODIS and the Microwave radar data showed that, the microphysical properties of liquid cloud could be retrieved by combining our MSPL and the inversion method.

#Multiscattering polarization Lidar #Microphysical properties of liquid water cloud #Polarization calibration

참고문헌 (25)

참고문헌 신청

A. Sinha / 1996 / Effect of atmospheric gases, surface albedo and cloud overlap on the absorbed solar radiation / Ann. Geophys 14:329~335

M. Degünther / 2000 / Effect of remote clouds on surface UV irradiance / Ann. Geophys 18:679~686

G. L. Stephens / 2005 / Cloud feedbacks in the climate system : a critical review / J. Clim 18:237~273

C. L. Liu / 2000 / Toward more accurate retrievals of ice water content from radar measurements of clouds / J. Appl. Meteorol 39:1130~1146

D. N. Whiteman / 1999 / Cloud liquid water, mean droplet radius, and number density measurements using a Raman Lidar / J. Geophys. Res 104:31411~31419

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!