Oak Ridge National Laboratory Distributed Active Archive Center

nasa-ornldaac-942

LBA-ECO CD-03 Cloud Base-Backscatter Data, km 67 Tower Site, Tapajos National Forest

ABSTRACT: A Vaisala CT-25K ceilometer was installed at an old-growth forest site located at the km 67 Eddy Flux Tower site in the Tapajos National Forest, Para, Brazil, off Kilometer 67 of BR-163 south of Santarem in April 2001 and remained operational through December 2003, with reliable data being collected between May 2001 and June 2003. Annual, 2001 to 2003, 30-minute average cloud base and backscatter profile data and measurement statistics (sample count, variance, skewness, and kurtosis) are presented in 15 ASCII comma-delineated files. In addition, the cloud base values (m) and measurement statistics for the three reported cloud base levels have been consolidated in 3 annual comma-separated files. The ceilometer provides 15-second measurements of cloud base (three levels up to 7500 m), echo intensity, and a 30-m resolution backscatter profile. The ceilometer reports vertical visibility during periods when the sky is obscured but a cloud base is not detectable. The ceilometer was operational for a sufficient amount of time to examine wet-to-dry season variations in cloud cover fraction and cloud base height.

daac.ornl.gov

http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=942

Identified by : LBA_CD03_CEILOMETER

This dataset was released on January 01, 2009.

The time range for this dataset is April 07, 2001 to December 22, 2003.

The spatial range for this dataset is -2.857° to -2.857° latitude, and -54.959° to -54.959° longitude. map

DOI : 10.3334/ORNLDAAC/942
Also known as :

• dataset oai:mercury-ops2.ornl.gov:ornldaac_942 (ornl lexicon)
• dataset oai:mercury.ornl.gov:ornldaac_942 (ornl lexicon)