The ORNL DAAC and the LBA DIS announce the release of five data sets associated with the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA):
- LBA-ECO CD-08 Radiocarbon Dates for Large Trees from a Forest near Manaus, Brazil. Data set prepared by J. Chambers, N. Higuchi, and J. Schimel. This data set reports the ages and growth rates of trees as determined by radiocarbon dating (14C), selected from a logging operation near the city of Itacoatiara, about 250 km east of Manaus, Brazil in 1997.
- LBA-ECO CD-08 Radiocarbon Dating of Tree Ages in Amazonas, Acre, and Para in Brazil. Data set prepared by S. Vieira, S. Trumbore, P.B. Camargo, D. Selhorst, J. Chambers, N. Higuchi, and L.A. Martinelli. This data set reports the ages and growth rates of trees determined by radiocarbon dating (14C) in Amazonas, Acre, and Para forests, Brazil.
- LBA-ECO LC-07 Amazon Floodplain Lake Chlorophyll from MODIS, Para, Brazil: 2002-2003. Data set prepared by E.M.L.M. Novo, C.C.F. Barbosa, R.M. Freitas, Y.E. Shimabukuro, J.M. Melack, and W.P. Filho. This data set contains chlorophyll concentration maps of the Amazon River floodplain lake, Lake Curuai, Para, Brazil.
- LBA-ECO LC-07 Bathymetric Survey of Floodplain Lake, Lago Curuai, Para, Brazil: 2004. Data set prepared by J.M. Melack, E.M.L. Novo, C. Barbosa, C.C. Freitas, and W.P. Filho. This data set reports on bathymetry data which represent a continuous surface from interpolated transect measurements of depth values of Lago Curuai, an Amazon River floodplain lake, upstream from Santarem, Para, Brazil. Field measurements were made in June 2004.
- LBA-ECO TG-07 Fallen and Standing Necromass, Tapajos, Cauaxi, Juruena Forests, Brazil. Data set prepared by M. Keller and M. Palace. This data set reports the characterization of fallen necromass as the volume and density of coarse woody debris (CWD), and the volume of standing necromass as the volume and density of standing dead trees. Measurements were made in undisturbed and logged forest areas of the Tapajos National Forest, and Cauaxi Forest, Para, Brazil, and Juruena Forest, Mato Grosso, Brazil from 2002-2004.
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.