Esselborn, Michael and Wirth, Martin and Fix, Andreas and Ehret, Gerhard (2007) An airborne high spectral resolution lidar based on an iodine absorption filter. In: AMS 87th Annual Meeting. AMS 2007 (87. Annual Meeting), 2007-01-14 - 2007-01-18, San Antonio, TX (USA).
|
PDF
573kB |
Official URL: http://www.ametsoc.org/index.html
Abstract
Aerosols directly influence the fluxes of solar and terrestrial radiation within the atmosphere by absorption and scattering of light. The quantification of this effect accounts for accurate determination of the aerosol’s optical properties. With conventional backscatter lidars climatically relevant aerosol properties like aerosol extinction can only be derived by inverting the lidar signal under the assumption of a a priori known lidar ratio, which generally is a highly variable quantity. For mineral dust, which is one of the major constituents of the tropospheric aerosol, lidar ratios ranging from 50 - 80 sr have been measured. Uncertainties in the lidar ratio will consequently lead to large errors in the retrieved optical properties. A well calibrated high spectral resolution lidar, HSRL, allows the direct determination of optical depth and extinction as described below. We have developed an airborne HSRL based on an iodine vapor absorption filter and a high power, frequency doubled Nd:YAG laser. The instrument was successfully employed during the Saharan Mineral Dust Experiment, SAMUM in May/June 2006 in Morocco to measure the optical properties of desert dust. With our measurements the Saharan dust can be characterized with regard to its lidar ratio, depolarization ratio and infrared-to-green backscatter ratio.
Item URL in elib: | https://elib.dlr.de/49862/ | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||||||||||||||
Title: | An airborne high spectral resolution lidar based on an iodine absorption filter | ||||||||||||||||||||
Authors: |
| ||||||||||||||||||||
Date: | 16 January 2007 | ||||||||||||||||||||
Journal or Publication Title: | AMS 87th Annual Meeting | ||||||||||||||||||||
Refereed publication: | No | ||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | high spectral resolution lidar, hsrl, Saharan dust, SAMUM | ||||||||||||||||||||
Event Title: | AMS 2007 (87. Annual Meeting) | ||||||||||||||||||||
Event Location: | San Antonio, TX (USA) | ||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||
Event Start Date: | 14 January 2007 | ||||||||||||||||||||
Event End Date: | 18 January 2007 | ||||||||||||||||||||
Organizer: | American Meterological Society | ||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||||
HGF - Program: | Space (old) | ||||||||||||||||||||
HGF - Program Themes: | W EO - Erdbeobachtung | ||||||||||||||||||||
DLR - Research area: | Space | ||||||||||||||||||||
DLR - Program: | W EO - Erdbeobachtung | ||||||||||||||||||||
DLR - Research theme (Project): | W - Vorhaben LIDAR-Forschung und -Entwicklung (old) | ||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Lidar | ||||||||||||||||||||
Deposited By: | Esselborn, Michael | ||||||||||||||||||||
Deposited On: | 16 Jul 2007 | ||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:12 |
Repository Staff Only: item control page