The Experimental Cloud Lidar Pilot Study (ECLIPS) was initiated to obtain statistics on cloud-base height, extinction, optical depth, cloud brokenness, and surface fluxes. Two observational phases have taken place, in October–December 1989 and April–July 1991, with intensive 30-day periods being selected within the two time intervals. Data are being archived at NASA Langley Research Center and, once there, are readily available to the international scientific community.

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1CSIRO, Division of Atmospheric Research, Mordialloc, Victoria, Australia.

2Department of Physics and CRESS, York University, North York, Ontario, Canada.

3NASA Langley Research Center, Hampton, Virginia

4Institute RicercaOnde Elettromagnetiche, CNR, Florence, Italy.

5NOAA Environmental Technology Laboratory, Boulder, Colorado.

6Laboratoire de Meteorologie Dynamique du CNRS, Ecole Polytechnique, Palaiseau, France.

7Bureau of Meteorology, Melbourne, Victoria, Australia.

8GTRI–EMLEOD, Georgia Institute of Technology, Atlanta, Georgia.

9Fraunhofer Institute for Atmospheric Environmental Research, Garmisch–Partenkirchen, Germany.

10Laboratory of Physics and Climate, Institute of Experimental Meteorology, Obninsk, Kaluga Region, Russian Federation.

11 Institute of Electronics, Bulgarian Academy of Sciences, Sofia, Bulgaria.

12Institute of Atmospheric Physics, Beijing, China.

13Department of Meteorology, University of Utah, Salt Lake City, Utah.

14Institute of Atmospheric Optics, Tomsk, Siberia, Russia.

15Meteorological Research Institute, Japan Meteorological Agency, Yatabe, Ibaraki, Japan.

16GKSS—Forschungszentrum Geesthacht GmbH, Geesthacht, Germany.

17Institut für Troposphärenforschung, Leipzig, Germany.

18School of Earth Sciences, Macquarie University, Sydney, Australia.