Retrieval of Aerosol and Water Vapor Profiles Using Ground-based Lidar over Tibetan Plateau
Abstract
Previous modelling and satellite studies have revealed a constituent (pollution and water vapor) transport pathway over the Tibetan Plateau (TP) regulated by monsoon circulation. Ground-based observations of aerosol and water vapor distribution in the area are in strong demands and are of great importance for understanding the atmospheric radiative balance and troposphere-stratosphere interaction over TP. Lidar has been proven an effective tools to achieve the detection capability of such atmosphere parameters at both high spatial and temporal resolutions. However, such effort has been rare in the TP region. An aerosol and water vapor lidar, recently deployed by the Institute of Atmospheric Physics, Chinese Academy of Sciences, has been deployed in Tibet since 2017. It is a dual Raman lidar system, employing 355 nm and 532 nm transmitted wavelengths, and measuring the backscattered signals at Mie channels (355 nm, 532 nm), Nitrogen Raman channels (387 nm, 607 nm), and water vapor Raman channels (407 nm, 660 nm). This technique enables high-resolution detection of a few atmospheric parameters, such as backscattering ratio and water vapor mixing ratio, covering a broad altitude range, from near surface up to the Upper Troposphere and Lower Stratosphere (UTLS) region. We will present our initial results of lidar measurements over the TP and make comparison with radiometer and radiosonde measurements.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.A31P3165Z
- Keywords:
-
- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 0394 Instruments and techniques;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 3311 Clouds and aerosols;
- ATMOSPHERIC PROCESSESDE: 3360 Remote sensing;
- ATMOSPHERIC PROCESSES