Title :
CO2 lidar: a somewhat different view of clouds
Author :
Eberhard, Wynn L.
Author_Institution :
Environ. Technol. Lab., NOAA, Boulder, CO, USA
Abstract :
Observation of clouds by infrared CO2 lidar provides information unique in some respects to that obtained by lidars that operate at wavelengths in or near the visible. Large differences in refractive index and scattering size parameter are the main reasons behind this uniqueness. These characteristics of CO2 lidar can be used to measure an average cloud drop size, to discriminate between ice and water particles using two wavelengths, and to simplify interpretation of backscatter measurements from nonspherical ice particles.
Keywords :
atmospheric techniques; carbon compounds; clouds; gas lasers; laser beam applications; meteorology; optical radar; remote sensing; remote sensing by laser beam; CO2; CO2 lidar; atmosphere meteorology; backscatter; cloud microphysics; drop size; ice; infrared; lase remote sensing; measurement technique; nonspherical ice particles; refractive index; scattering size parameter; water particle; Clouds; Ice; Laser radar; Particle measurements; Particle scattering; Refractive index; Scattering parameters; Size measurement; Water; Wavelength measurement;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1994. IGARSS '94. Surface and Atmospheric Remote Sensing: Technologies, Data Analysis and Interpretation., International
Print_ISBN :
0-7803-1497-2
DOI :
10.1109/IGARSS.1994.399303
