The ORNL DAAC and the LBA DIS announce the release of three data sets associated with the LBA-ECO component of the Large Scale Biosphere- Atmosphere Experiment in Amazonia (LBA).
- LBA-ECO CD-04 Soil Moisture Data, km 83 Tower Site, Tapajos National Forest. Data set prepared by M.L. Goulden, S.D. Miller, and H.R. da Rocha. This data set reports continuous high-resolution frequency-domain reflectometry measurements to 10 m depth and precipitation data near each of the two towers located at the km 83 flux tower site (logged forest site) in the Tapajos National Forest in the state of Para, Brazil. Measurements were made during 2002 and 2003. Soil moisture and precipitation data are provided in two comma-delimited ASCII files.
- LBA-ECO CD-04 CO2 and Heat Flux, km 83 Gap Tower site, Tapajos National Forest. Data set prepared by S.D. Miller, M.L. Goulden, and H.R. da Rocha. This data set reports 30-minute values for above-canopy meteorology and fluxes of momentum, heat, and carbon dioxide, and within-canopy carbon dioxide and water vapor concentrations collected at the tower located within a logging gap at km 83 flux tower site in the Tapajos National Forest, Para, Brazil. Data were collected over 1.5 years between June 3, 2002 and January 30, 2004. All of the data are contained in one comma-delimited ASCII file.
- LBA-ECO CD-02 Carbon, Nitrogen, Oxygen Stable Isotopes in Organic Material, Brazil. Data set prepared by J. Ehleringer, L.A. Martinell, J.P. Ometto, T.F. Domingues, L. Flanagan, J. Berry, C. Cook, and G.B. Nardoto. This data set reports the measurement of stable carbon, nitrogen, and oxygen isotope ratios in organic material (plant, litter and soil samples) in forest canopy profiles and pasture (grasses and shrubs) as well as corresponding carbon and nitrogen tissue concentrations at a number of different sites across Brazil. The sampling design captured the temporal variation in rainfall from 1999-2004. Data are in three comma-delimited ASCII files.
LBA is an international research initiative under the leadership of Brazil. The project focuses on the climatological, ecological, biogeochemical, and hydrological functions of Amazonia; the impact of land use change on these functions; and the interactions between Amazonia and the Earth system. The LBA-ECO component, which is funded by NASA, 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?"
See the LBA Project page for further information about the study and to access associated data and documentation maintained by the ORNL DAAC.
The ORNL DAAC is a NASA-funded data center archiving and distributing terrestrial ecology and biogeochemical dynamics data. The LBA Data and Information System (LBA-DIS) has been developed by INPE with NASA's participation.