Atmospheric Remote Sensing: Instruments
Depolarization and Backscatter Unattended Lidar (DABUL)
CSD and the University of Maryland - Baltimore County's Physics Department collaborated to develop and deploy a long-term, unattended infrared spectroradiometer and lidar to monitor and study the radiative effects of water vapor, aerosols, and thin clouds in the upper troposphere. The infrared spectro-radiometer measures atmospheric emitted spectral radiance over the wavelength range of about 3-23 micrometers, while the lidar detects clouds and aerosol layers. Research applications include:
- Cloud Geometry
- Cloud Phase
- Aerosol Scattering Ratio
- Extinction Profiles
- Optical Depth
- Mixed Layer Height
DABUL operates automatically from within weatherproof housing, with remote control access and data download through a communications link.
Contact: Raul Alvarez
Basic Parameters Measured
- Molecular and Particle Backscatter
- Depolarization Ratio
|Nauru99||June-July 1999||Tropical Western Pacific|
|Barrow Haze Study||February-March 1999||Barrow, Alaska|
|SHEBA||October 1997 - September 1998||Arctic Ocean|
|FIRE-ACE||April-July 1998||Arctic Ocean|
|SURFRAD||June-July 1997||Boulder, Colorado|
|Erie Observations||June 1997||Erie, Colorado|
|Pulse energy||25 µJ|
|Pulse rate||2000 Hz|
|Average Time:||1 to 10 s|
|Scan||180 ° in elevation angle|
|Range Resolution:||30 m|
|Minimum range||60 m|
|Maximum range||40 km|
Eberhard, W.L., R.A. Alvarez, J.M. Intrieri, S.P. Sandburg, K.W. Koenig, and K.R. Healy, Automated All-Weather Lidar with Scanning Option, 19th International Laser Radar Conference, NASA/CP--1998--207671/PT1, 639-642, Annapolis, Maryland, July 1998.
Alvarez, R.J., W.L. Eberhard, J.M. Intrieri, C.J. Grund, and S.P. Sandberg, A depolarization and backscatter lidar for unattended operation in varied meteorological conditions, 10th Symposium on Meterological Observations and Instrumentation, Phoenix, AZ, 11-16 January 1998. American Meterological Society, Boston, MA, 1998.
Grund, C.J., and S.P. Sandberg, Depolarization and Backscatter Lidar for Unattended Operation, 18th International Laser Radar Conference, 3-6, Berlin, Germany, July 1996.