Cirrus climatological results from lidar measurements at OHP (44°N, 6°E)

A climatology of cirrus clouds over the Observatoire de Haute Provence in France has been constructed from the analysis of ground-based lidar measurements taken from 1997 to 1999. During this period the high-resolution Rayleigh/Mie lidar collected 384 nights of measurements and cirrus profiles are observed in about half of these cases. We find subvisible cirrus (tau < 0.03) constitute ∼20% of cirrus cloud occurrences and that the mean thickness of a subvisible cirrus cloud layer is less than 1 km. A discussion of the error associated with these determinations is also presented.

[1]  M. McCormick,et al.  A 6‐year climatology of cloud occurrence frequency from Stratospheric Aerosol and Gas Experiment II observations (1985–1990) , 1996 .

[2]  Optical and geometrical properties of northern midlatitude cirrus clouds observed with a UV Raman lidar , 1999 .

[3]  Andrew J. Heymsfield,et al.  A parameterization of the particle size spectrum of ice clouds in terms of the ambient temperature and the ice water content , 1984 .

[4]  Alain Hauchecorne,et al.  LIDAR monitoring of the temperature in the middle and lower atmosphere , 1992 .

[5]  A. Ansmann,et al.  Independent measurement of extinction and backscatter profiles in cirrus clouds by using a combined Raman elastic-backscatter lidar. , 1992, Applied optics.

[6]  Michael K. Griffin,et al.  Optical scattering and microphysical properties of subvisual cirrus clouds, and climatic implications , 1989 .

[7]  U. Wandinger,et al.  Multiple-Scattering Influence on Extinction-and Backscatter-Coefficient Measurements with Raman and High-Spectral-Resolution Lidars. , 1998, Applied optics.

[8]  C. Platt,et al.  Determination of the cirrus particle single-scattering phase function from lidar and solar radiometric data. , 1984, Applied optics.

[9]  J. Mergenthaler,et al.  High humidities and subvisible cirrus near the tropical tropopause , 1999 .

[10]  D. F. Young,et al.  A study of the vertical structure of tropical (20°S–20°N) optically thin clouds from SAGE II observations , 1998 .

[11]  S. Solomon,et al.  The potential of cirrus clouds for heterogeneous chlorine activation , 1996 .

[12]  J. Penner,et al.  Aviation and the Global Atmosphere , 1999 .

[13]  Jerome Riedi,et al.  Cloud thermodynamic phase from POLDER/ADEOS: comparison with millimeter wave radar measurements and synoptic weather reports , 1999, Remote Sensing.

[14]  Alain Hauchecorne,et al.  A Critical Review of the Database Acquired for the Long-Term Surveillance of the Middle Atmosphere by the French Rayleigh Lidars , 1993 .

[15]  Lidar network observations of cirrus morphological and scattering properties during the International Cirrus Experiment 1989 : the 18 October 1989 case study and statistical analysis , 1993 .

[16]  E. Browell,et al.  The impact of subvisible cirrus clouds near the tropical tropopause on stratospheric water vapor , 1998 .

[17]  K. Liou Influence of Cirrus Clouds on Weather and Climate Processes: A Global Perspective , 1986 .

[18]  Kenneth Sassen,et al.  Subvisual-Thin Cirrus Lidar Dataset for Satellite Verification and Climatological Research , 1992 .