The ORNL DAAC and the LBA DIS announce the release of two data sets from the LBA-ECO component of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA):
- LBA-ECO CD-06 CO2 Exchange in River Systems Across the Amazon Basin: 2004-2007. Data set prepared by S.R. Alin and J.E. Richey. This data set provides measurements of carbon dioxide flux rates, gas transfer velocity, and partial pressures of carbon dioxide at 75 sites on rivers and streams of the Amazon River system in South America for the period beginning July 1, 2004, and ending January 23, 2007. The sampled areas span the spectrum of chemical characteristics observed across the entire basin, including, for example, both low and high pH values and suspended sediment loads.
- LBA-ECO TG-03 Solar Surface Irradiance and PAR, Brazilian Amazon: 1999-2004. Data set prepared by J.S. Schafer, T. F. Eck, B.N. Holben, P.E. Artaxo, M.A. Yamasoe, and S. Procopio. This data set includes unfiltered and filtered solar surface irradiance from Kipp and Zonen CM-21 pyranometers, and photosynthetically active radiation from Skye-Probetech SKE-510 PAR sensors. Measurements were made at six sites acrosss the Brazilian Amazon during the period from 1999 to 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.