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-04 Leaf Photosynthesis and Respiration, Tapajos National Forest: 2000-2006. Data set prepared by C. Doughty, A. Sousa, and M. Figueira. This data set reports leaf-level photosynthesis response curves for the effects of temperature, leaf age, warming, irradiation, and circadian rhythm, and leaf-level photorespiration rates at 30 and 37 degrees C. Measurements were made between June 2000 and February 2006 at the km 83 Logged Forest Tower site, the km 67 Primary Forest Tower site, and the control site at Seca Floresta, Tapajos National Forest, Para, Brazil.
- LBA-ECO ND-02 Soil Volumetric Water Content, Tapajos National Forest, Brazil. Data set prepared by by E.L. Belk, D. Markewitz, T. Rasmussen, E.J.M. Carvalho, D.C. Nepstad, and E.A. Davidson. Data are provided for monthly measured soil volumetric water content (VWC) from a rainfall exclusion experiment conducted from 1999-2001 at the km 67 Seca Floresta site, Tapajos National Forest, Brazil.
- LBA-ECO LC-02 Groundwater Levels, Catuaba Experimental Farm, Acre, Brazil: 1999-2004. Data set prepared by D. Selhorst and I.F. Brown. This data set contains bi-weekly or monthly depth-to-water measurements for three wells located in a ~1,500 ha forest fragment on the Catuaba Experimental Farm, Acre, Brazil. Data were collected between February 1999 and December 2004.
- LBA-ECO TG-07 Tree Geometry in an Undisturbed Forest in Cauaxi, Para, Brazil. Data set prepared by G. Asner, M. Palace, M. Keller, M. Pereira, J. Silva, and J. Zweede. Data are provided on canopy measurements from an undisturbed eastern Amazon forest (Cauxi, Para, Brazil), derived using a hand-held laser range finder, and the diameter at breast height (DBH) was determined manually. Parameters reported include crown width, crown depth, tree height, and DBH.
- LBA-ECO CD-34 Hyperion 30-m Surface Reflectance, Amazon Basin: 2002-2005. Data set prepared by J.Q. Chambers. This data set contains 20 multispectral surface reflectance images collected by the EO-1 satellite Hyperion sensor at 30-m resolution and covering the entire Amazon Basin for the 2002 through 2005 time period. All images were converted to GeoTiff format for distribution.
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.