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LBA-ECO CD-03 Nocturnal Meteorological Data, Forest and Pasture Sites, Para, Brazil

Data Set Overview

Data setLBA-ECO CD-03 Nocturnal Meteorological Data, Forest and Pasture Sites, Para, Brazil
Release date2012-09-05
ProjectLarge Scale Biosphere-Atmosphere
Time Period2001-07-26 to 2003-11-26


This data set contains measurements of nocturnal meteorological profiles collected from tethered balloon platforms during July 2001, October 2001, and November 2003. Measurements were made near the pasture/agricultural tower site at km 77 on BR-163 just south of the city of Santarem, and the near the Tapajos National Forest, km 83 tower site, Santarem, Para, Brazil. Measurements collected include air temperature, wind speed and direction, and specific humidity. The 2003 measurements also included CO2 concentrations. Sites were near enough to allow comparison between sounding profiles and tower data. There are three comma-delimited ASCII files with this data set. Profiles were obtained from sunset until the first hours after sunrise. Each sounding provided information on temperature, humidity, horizontal wind magnitude and direction as the balloon went up and down. Typical soundings went up to 300 to 400 m. During most of the night, soundings were performed hourly. The balloon rose at a rate of 0.5 m per second in the first 100 m, and 2 m per second above it. The time between successive samplings was 10 s. Intensive periods of shallow, successive soundings were performed starting at dawn, to catch the early development of the convective boundary layer (CBL). These early morning soundings went up only to the capping inversion.


Data set reference document


Acevedo, O.C., D.R. Fitzjarrald, R.K. Sakai, O.L.L. Moraes, and R. da Silva. 2012. LBA-ECO CD-03 Nocturnal Meteorological Data, Forest and Pasture Sites, Para, Brazil. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Large Scale Biosphere-Atmosphere : The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) is an intensive scientific investigation of the tropical rainforest of Brazil and portions of adjacent countries. Like FIFE and BOREAS, this project uses intensive remote-sensing techniques and ground-based experiments to investigate the atmosphere-biosphere-hydrosphere dynamics of this large tropical region. The LBA Project encompasses several scientific disciplines, or components. The LBA-ECO component focuses on the question: "How do tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in Amazonia?"

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Companion Files

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  • CD03_Tethered_Balloon.pdf

Data Files

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Data File (Granule)File SizeDatesLatitudeLongitude
CD03_Balloon_2003_Nov.csv 178.8 KB 2003-11-11 - 2003-11-26 3.02S54.97W
CD03_Balloon_2001_July.csv 345.9 KB 2001-07-26 - 2001-07-30 3.02S54.89W
CD03_Balloon_2001_Oct.csv 419.2 KB 2001-10-03 - 2001-10-11 3.02S54.89W

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Files related to this data set have been downloaded on 35 occasions since 2012-11-24, totaling 145 files.