Overview
| DOI | https://doi.org/10.3334/ORNLDAAC/942 |
|---|---|
| Version | 1 |
| Project | |
| Published | 2009-09-29 |
| Updated | 2023-10-03 |
| Usage | 575 downloads |
| Citations | 1 publication cited this dataset |
Description
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.
Science Keywords
- ATMOSPHERE
- AEROSOLS
- AEROSOL BACKSCATTER
- ATMOSPHERE
- CLOUDS
- CLOUD PROPERTIES
- CLOUD BASE HEIGHT
Data Use and Citation
This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy. See our Data Use and Citation Policy for more information.
Data Files
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Companion Files
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Dataset Companion Files
Dataset has 2 companion files.
- CD03_Ceilometer_Km67_Methods.pdf
- CD03_Ceilometer_Km67.pdf