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117 research data, page 1 of 12

Global River Discharge, 1807-1991, V[ersion]. 1.1 (RivDIS)

VOROSMARTY, C.J.; B. M. Fekete; Tucker, B.A. (1998)
Publisher: ORNL Distributed Active Archive Center
The Global Monthly River Discharge Data Set contains monthly averaged discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station with a mean of 21.5 years. The data are derived from the published UNESCO archives for river discharge, and checked against information obtained from the Global Runoff Center in Koblenz, Germany through the U.S. National Geophysical Data Center in Boulder, Colorado. Citation: Vorosmarty, C.J., B...

FLUXNET Marconi Conference Gap-Filled Flux and Meteorology Data, 1992-2000

Fluxes of carbon dioxide, water vapor, and energy exchange have been measured at 38 forest, grassland, and crop sites as part of the EUROFLUX and AmeriFlux projects. A total of 97 site-years of data were compiled, primarily between 1996 and 1998 but also for 1992-1995 and 1999-2000. Half-hour flux and meteorology measurements are included plus the gap-filled half-hour estimates and aggregations to day and night, weekly, monthly, and annual periods. The FLUXNET 2000 Synthesis Workshop was held...

LBA-ECO LC-23 Characterization of Vegetation Fire Dynamics for Brazil: 2001-2003

Schroeder, W.; MORISETTE, J.T.; CSISZAR, I.A.; Giglio, L.; Morton, D. C; JUSTICE, C.O. (2007)
Publisher: ORNL Distributed Active Archive Center
Satellite fire detection was determined from two sensorsâ⠬â the Advanced Very High Resolution Radiometer (AVHRR) on NOAA-12 and the Moderate Resolution Imaging Spectroradiometer (MODIS) on both the Terra and Aqua platforms, for 2001- 2003 to characterize fire activity in Brazil, giving special emphasis to the Amazon region. Active fire data for AVHRR/NOAA-12 was produced using a fixed threshold fire detection technique based on the algorithm developed by the Centro de Previsao do Tempo e ...

LBA-ECO CD-04 Dendrometry, km 83 Tower Site, Tapajos National Forest, Brazil

FIGUEIRA, A.M.S.; Miller, S. D.; de Sousa, C. A. D.; Menton, M. C.; A. R. Maia; da Rocha, H. R.; Goulden, M. L. (2010)
Publisher: ORNL Distributed Active Archive Center
A dendrometry study was conducted at the logged forest tower site, km 83 site, Tapajos National Forest, Para, Brazil over a period of 4 years following the implementation of a reduced impact logging management regime. Dendrometer bands were installed to measure diameter growth increments for 234 trees in an 18 ha plot adjacent to the eddy flux tower at the km 83 site. In addition to trees randomly selected for measurements within the plot prior to logging, a set of smaller diameter trees with...

Global 30-Year Mean Monthly Climatology, 1930-1960, V2.1 (Cramer and Leeman)

Cramer, W. P.; LEEMANS, R. (1999)
Publisher: ORNL Distributed Active Archive Center
This database is a major update of the Leemans and Cramer database (Leemans and Cramer 1991). It currently contains monthly averages of mean temperature, temperature range, precipitation, rain days and sunshine hours for the terrestrial surface of the globe, gridded at 0.5 degree longitude/latitude resolution. It was generated from a large data base, using the partial thin-plate splining algorithm developed by Michael F. Hutchinson, Canberra (Hutchinson and Bischof 1983).

Global Distribution of Root Profiles in Terrestrial Ecosystems

H. J. Schenk; Jackson, R.B. (2003)
Publisher: ORNL Distributed Active Archive Center
Rooting depths were estimated from a global database of root profiles that was assembled from the primary literature to study relationships of abiotic and biotic factors associated with belowground vegetation structure. Variables used to characterize belowground vegetation structure include the depths above which 50% of all roots and 95% of all roots are located in the profile. For each root profile, information recorded includes latitude and longitude, elevation, soil texture, depth of org...

LBA-ECO LC-07 JERS-1 SAR Wetlands Masks and Land Cover, Amazon Basin: 1995-1996

HESS, L.L.; Melack, J.M.; E. M. L. M. Novo; BARBOSA, C.C.F.; GASTIL, M. (2012)
Publisher: ORNL Distributed Active Archive Center
This data set provides three Amazon Basin wetland image products: (1) a Central Amazon Wetlands Mask, (2) a Central Amazon Wetlands Vegetative-hydrologic Land Cover Map, and (3) an Amazon Basin Wetlands Mask. All three were derived from the Global Rain Forest Mapping Project (GRFM) dry and wet season mosaics (August-September 1995 and May-August 1996) of the Japanese Earth Resources Satellite-1 (JERS-1) Synthetic Aperture Radar (SAR) imagery data (Rosenqvist et al., 2000 and Chapman et al.,...

ISLSCP II HYDRO1k Elevation-derived Products

VERDIN, K.L. (2011)
Publisher: ORNL Distributed Active Archive Center
This data set contains coarse scale elevation and elevation-based parameters at 1.0 and 0.5-degree spatial resolutions that were developed to support a wide variety of global modeling activities through the International Satellite Land Surface Climatology Project (ISLSCP) Initiative II data collection. These coarse scale data have sufficient statistical information (up to fourth moment) to allow a good statistical description of the sub-cell distribution of any particular elevation parameter ...

Global Data Set of Derived Soil Properties, 0.5-Degree Grid (ISRIC-WISE)

Batjes, N. H. (2000)
Publisher: ORNL Distributed Active Archive Center
The World Inventory of Soil Emission Potentials (WISE) database currently contains data for over 4300 soil profiles collected mostly between 1950 and 1995. This database has been used to generate a series of uniform data sets of derived soil properties for each of the 106 soil units considered in the Soil Map of the World (FAO-UNESCO, 1974). These data sets were then linked to a 1/2 degree longitude by 1/2 degree latitude version of the edited and digital Soil Map of the World (FAO, 1995) to ...