_:genid1 . _:genid1 "LBA_CD03_CEILOMETER" . _:genid2 . _:genid2 . _:genid2 "-2.857"^^ . _:genid2 "-2.857"^^ . _:genid2 "-54.959"^^ . _:genid2 "-54.959"^^ . _:genid3 . _:genid3 . _:genid3 "2001-04-07T00:00:00"^^ . _:genid3 "2003-12-22T00:00:00"^^ . "nasa-ornldaac-942" . "LBA-ECO CD-03 Cloud Base-Backscatter Data, km 67 Tower Site, Tapajos National Forest"^^ . "10.3334/ORNLDAAC/942" . _:genid1 . . "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."^^ . "2009-01-01T00:00:00"^^ . _:genid2 . _:genid3 . . _:genid4 . _:genid4 . _:genid4 . _:genid4 . "oai:mercury-ops2.ornl.gov:ornldaac_942" . "http://mercury.ornl.gov/oai/provider?verb=GetRecord&metadataPrefix=oai_dif&identifier=oai:mercury-ops2.ornl.gov:ornldaac_942" . . "oai:mercury.ornl.gov:ornldaac_942" . "http://mercury.ornl.gov/oai/provider?verb=GetRecord&metadataPrefix=oai_dif&identifier=oai:mercury.ornl.gov:ornldaac_942" . .