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.
- AEROSOL BACKSCATTER
- CLOUD PROPERTIES
- CLOUD BASE HEIGHT
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|Data File (Granule)||Size||Dates|
|CD03_Ceilometer_Sample_Count_2001.csv||9.6MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_Kurtosis_2003.csv||12.7MB||2003-01-01 to 2003-12-22|
|CD03_Ceilometer_cloud_level_only_2003.csv||990.1KB||2003-01-01 to 2003-12-22|
|CD03_Ceilometer_cloud_level_only_2001.csv||1.0MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_Kurtosis_2001.csv||13.2MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_Kurtosis_2002.csv||17.7MB||2002-01-01 to 2002-12-31|
|CD03_Ceilometer_Skewness_2002.csv||17.4MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_Variance_2003.csv||12.2MB||2003-01-01 to 2003-12-22|
|CD03_Ceilometer_Skewness_2001.csv||12.9MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_Backscatter_2003.csv||12.7MB||2003-01-01 to 2003-12-22|
|CD03_Ceilometer_Backscatter_2001.csv||11.7MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_Backscatter_2002.csv||15.9MB||2002-01-01 to 2002-12-31|
|CD03_Ceilometer_Skewness_2003.csv||12.7MB||2003-01-01 to 2003-12-22|
|CD03_Ceilometer_Sample_Count_2003.csv||9.5MB||2003-01-01 to 2003-12-22|
|CD03_Ceilometer_Variance_2001.csv||11.5MB||2001-04-07 to 2001-12-31|
|CD03_Ceilometer_cloud_level_only_2002.csv||1.4MB||2002-01-01 to 2002-12-31|
|CD03_Ceilometer_Variance_2002.csv||15.6MB||2002-01-01 to 2002-12-31|
|CD03_Ceilometer_Sample_Count_2002.csv||13.0MB||2002-01-01 to 2002-12-31|
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Dataset Companion Files
Dataset has 2 companion files.