1,630 Works

NPP Tropical Forest: Maui, Hawaii, U.S.A., 1996-1997

E.A.G. SCHUUR
The objective of this study was to quantify net primary productivity as a function of rainfall in mesic to wet montane rainforests in Maui, Hawaii. The Maui Moisture Gradient is a sequence of 6 sites located on the island of Maui that range from 2200 mm to 5050 mm mean annual rainfall, while temperature and all other state factors (parent material, substrate age, organisms, and topography) that control NPP remain relatively constant. This data set...

SAFARI 2000 Meteorological Tower Measurements, Kruger National Park, 2000-2002

N.P. HANAN, R.J. SCHOLES & M. COUGHENOUR
An eddy covariance system mounted on a tower near the Skukuza Camp in Kruger National Park, South Africa, has been operating continuously since early 2000. Meteorological measurements started in February 2000, and the first flux measurements were made in April 2000. The site is unique in that the micrometeorological instruments are positioned on a tower located between two distinct savanna types, a broad-leafed Combretum savanna and a fine-leafed Acacia savanna. These contrasting savanna types are...

SAFARI 2000 Canopy Structural Measurements, Kalahari Transect, Wet Season 2001

P. BOWYER, N.M. TRODD & F.M. DANSON
This data set contains leaf area index (LAI), leaf inclination angle, and canopy dimension data from study sites along the Kalahari Transect in southwest Botswana. The data were collected during the 2001 wet season field campaign of the SAFARI 2000 at a total of seven plots of 200 x 150 meter dimensions; two plots each at Tshane and Mabuasehube, and three plots at Tsabong. The data set consists of measurements of leaf angle for plot...

PROVE MQUALS Reflectance at Jornada Experimental Range, New Mexico, 1997

A.R. HUETE
This study utilized low flying, aircraft-based radiometers for optical characterization of top-of-the-canopy reflectance at Jornada Experimental Range in New Mexico during the Prototype Validation Experiment (PROVE) in May 1997. MQUALS refers to a light aircraft radiometric package for MODLAND Quick Airborne Looks (MQUALS). The objective was to examine the usefulness of low-flying aircraft for Moderate Resolution Imaging Spectroradiometer (MODIS) validation of land products. This project was the responsibility of the MODIS Land (MODLAND) validation group....

LBA Regional Boundary for the Legal Amazon of Brazil, 8-km

C.S. POTTER & V. BROOKS-GENOVESE
The 8km Legal Amazon Mask was generated by Christopher Potter at the Ecosystem Science and Technology Branch / Earth Science Division of NASA Ames (Potter and Brooks-Genovese, 1999). The mask was generated from the Digital Chart of the World (DCW) available from Environmental Systems Research Institute, Inc. (ESRI). The Legal Amazon of Brazil is defined by law to include the states of Acre, Amapa, Amazonas, Para, Rondonia, Roraima, Mato Grosso, Maranhao, and Tocantins (Anuario Estatistico...

NPP Temperate Forest: Humboldt Redwoods State Park, California, USA, 1972-2001, R1

R.T. BUSING & T. FUJIMORI
This data set contains site characteristics, stand descriptors, and measured and calculated above-ground biomass, above-ground net primary production (ANPP), and woody detritus input data for an old Sequoia sempervirens stand at Bull Creek in Humboldt Redwoods State Park, California. There is one data file (.csv format) with this data set. Productivity of the Sequoia stand was studied via tree re-measurement (1972 and 2001) and allometric relationships. Measurements of tree circumference at 1.7 m above ground...

NPP Temperate Forest: Great Smoky Mountains, Tennessee, USA, 1978-1992, R1

R.T. BUSING
This data set contains two data files (.csv format). One file contains site characteristics, stand descriptors, and above-ground biomass and ANPP data for seven old-growth temperate forest stands and one young cove forest stand in the Great Smoky Mountains of Tennessee. The old-growth stands (> 200 years old) span several watersheds on the north slope of the mountains at elevations ranging from 720 to 1,140 m. The younger stand (48-63 years old, elevation 910 m)...

Walker Branch Watershed Vegetation Inventory, 1967-1997

M.A. HUSTON, D.W. JOHNSON, D.E. TODD, J.W. CURLIN & F.W. HARRIS
The original objectives of the long-term vegetation survey of Walker Branch Watershed in eastern Tennessee (WBW; Curlin and Nelson 1968) was to quantify the standing crop of vegetation through time including measures of tree/plant size distribution, species composition, above-ground biomass, and chemical balance. Field studies of permanent vegetation plots using one sample design were conducted over a 30-year period (1967 to 1997), and observations continue with funding from the U.S. Department of Energy's Program for...

SAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000

A.C. PINHEIRO
Land Surface Temperature (LST) is a key indicator of land surface states, and can provide information on surface-atmosphere heat and mass fluxes, vegetation water stress, and soil moisture. A daily, day and night, LST data set for continental Africa, including Madagascar, was derived from Advanced Very High Resolution Radiometer (AVHRR) Global Area Coverage (GAC; 4 km resolution) data for the 6-year lifetime of the NOAA-14 satellite (from 1995 to 2000) using a modified version of...

SAFARI 2000 Tree Ring Data, Mongu, Zambia, Dry Season 2000

V. TROUET
This data set contains tree ring data from three sites located about 25 km of the meteorological station at Mongu, Zambia. Data from about 50 individual trees are reported. In addition, chronologies (or site mean curves) that better represent common influences (e.g., in this study, the climatic signal) were developed for each site based on the individual data (Trouet, 2004; Trouet et al., 2001). The series covers a maximum of 46 years, although most series...

SAFARI 2000 BVOC Measurements at Skukuza and Maun Flux Towers, Wet Season 2001

A.B. GUENTHER, P. HARLEY, J.P. GREENBERG & L. OTTER
Biogenic volatile organic compound (BVOC) emissions were measured in a Colophospermum mopane woodland near Maun, Botswana, and in a Combretum-Acacia savanna in Kruger National Park, 13 km from Skukuza, Republic of South Africa (RSA) during the 2001 wet season campaign of SAFARI 2000. In addition, relaxed eddy accumulation (REA) measurements of BVOC fluxes were made on flux towers at these sites, where net CO2 emissions were also measured simultaneously. The investigators also took advantage of...

SAFARI 2000 Soil Profile Data (ISRIC-WISE)

N.H. BATJES
The data set consists of a southern African subset of the "Global Soil Profile Data (ISRIC-WISE)" data set. Data files are provided in comma-delimited ASCII format. The International Soil Reference and Information Centre - World Inventory of Soil Emission Potentials (ISRIC-WISE) international soil profile data set consists of a homogenized, global set of 1,125 soil profiles for use by global modelers. These profiles provided the basis for the Global Pedon Database (GPDB) of the International...

Literature-Derived Parameters for the BIOME-BGC Terrestrial Ecosystem Mode

M.A. WHITE, P.E. THORNTON, S.W. RUNNING & R.R. NEMANI
Ecosystem simulation models use descriptive input parameters to establish the physiology, biochemistry, structure, and allocation patterns of vegetation functional types, or biomes. For single-stand simulations, it is possible to measure required data, but as spatial resolution increases, data availability decreases. Generalized biome parameterizations are then required. Undocumented parameter selection and unknown model sensitivity to parameter variation for larger-resolution simulations are currently the major limitations to global and regional modeling. We present documented input parameters for...

NPP Grassland: NPP Estimates from Biomass Dynamics for 31 Sites, 1948-1994, R1

J.M.O. SCURLOCK, K.R. JOHNSON & R.J. OLSON
This data set includes monthly grassland biomass data, net primary productivity (NPP) estimates, and climate (rainfall amounts and temperature) data for multiple study sites in major grassland types worldwide. Field measurements of biomass and associated environmental data were compiled for the multiple grassland study sites. When sufficient biomass data were available, NPP was estimated by six different algorithms for 31 grassland sites to examine potential bias associated with the algorithms (Scurlock et al. 2002). The...

NPP Multi-Biome: Production and Mortality for Eastern U.S. Forests, 1962-1996, R1

S.L. BROWN & P.E. SCHROEDER
Annual mean aboveground wood increments for both hardwood and softwood are provided for 1956 counties of the 28 eastern U.S. states based on the forest inventory data from 1960s to 1990s. Estimates of aboveground production and mortality of woody biomass for forests of the eastern United States based on data collected from an extensive network of permanent inventory plots maintained by the U.S. Department of Agriculture Forest Service Forest Inventory and Analysis (FIA). Estimates of...

Global Distribution of Root Turnover in Terrestrial Ecosystems

R.A. GILL & R.B. JACKSON
Estimates of root turnover rates were calculated from measurements of live root standing crop and belowground net primary production (BNPP) compiled from the primary literature. Vegetation characteristics, soil properties, and climate conditions were associated with turnover rates to examine patterns and controls for biomes worldwide. Building on prior analyses (Jackson et al. 1996, 1997), data were compiled from approximately 190 papers from additional journals, book chapters, technical reports, and unpublished manuscripts that included information on...

Underway surface seawater pCO2 data measured on board the R/V Wakataka Maru during the FRA near-Japan pCO2 cruises project

Oak Ridge National Laboratory Environmental Sciences Division

LBA-ECO LC-01 National, Provincial, and Park Boundaries, Ecuador

R.E. BILSBORROW, S.J. WALSH & B.G. FRIZZELLE
This data set contains the national and provincial boundaries of Ecuador as well as the boundaries of two national parks: the Cuyabeno Wildlife Reserve and the Yasuni National Park. There are four data files in ESRI ARCGIS Shapefile format within this data set. Each shape file has been compressed into a single compressed file (*.zip).

LBA-ECO LC-01 Hydrography, Morphology, Edaphology Maps, Northern Ecuadorian Amazon

S.J. WALSH, R.E. BILSBORROW & B.G. FRIZZELLE
This data set provides map images of hydrographic, morphologic, and edaphic features for the northern Amazon Basin in eastern Ecuador. The hydrographic data are available at two scales based on the 1:50,000 and 1:250,000-scale topographic source maps that were generated in 1990 and 1993, respectively. Morphological and edaphological data were digitized from a 1:500,000 map published in 1983. There are 3 compressed (*.zip) data files with this data set.

LBA-ECO LC-02 Groundwater Levels, Catuaba Experimental Farm, Acre, Brazil: 1999-2004

D. SELHORST & I.F. BROWN
This data set reports bi-weekly or monthly depth-to-water measurements for three wells located in a ~1,500 ha forest fragment on the Catuaba Experimental Farm, which is the property of the Federal University of Acre, Brazil. Data were collected between February 1999 and December 2004. There is one comma-delimited ASCII data file with this data set. DATA QUALITY STATEMENT: The Data Center has determined that there are questions about the quality of the data reported in...

GEOSECS Atlantic, Pacific, Indian, and Mediterranean Radiocarbon Data

Oak Ridge National Laboratory Environmental Sciences Division

BOREAS AFM-04 Twin Otter Aircraft Flux Data

J.I. MACPHERSON & R.L. DESJARDINS
The BOREAS AFM-04 team used the NRC Twin Otter aircraft in 1994 and 1996 to make measurements in the boundary layer of the fluxes of sensible and latent heat, momentum, ozone, methane, and carbon dioxide, plus supporting meteorological parameters such as temperature, humidity, and wind speed and direction. Aircraft position, heading, and altitude were also recorded, as were several radiometric observations for use in interpretation of the data (greenness index, surface temperature, incoming and reflected...

BOREAS Follow-On DSP-10 Regridded TM Mosaic Land Cover Maps for 1994

F.G. HALL, G. RAPALEE & D.E. KNAPP
Existing 30-m land cover Thematic Mapper classification by CCRS was aggregated and reprocessed and are now available at multiple resolutions (10x5 minutes and 30 minutes). These data were regridded for use by the BOREAS Follow-on Carbon and Hydro-Meteorological modeling groups. Characteristics of the individual products are described in the data set guide document.

BOREAS Follow-On FLX-01 NSA-OBS Tower Flux, Meteorological, and Soil Temp. Data

S.C. WOFSY & A. DUNN
The BOREAS Follow-On FLX-01 team collected tower flux, surface meteorological, and soil temperature data at the BOREAS NSA-OBS site continuously from March 1994 through December 1998. Data from March 1994 through October 1996 are included in the BOREAS TF-03 effort while data from the end of October 1996 through December 1998 are included in the BOREAS Follow-on FLX-01 effort.

BOREAS Follow-On HMet-01 Level-2 GOES-8 1996 Shortwave and Longwave Radiation

E.A. SMITH, J.J. GU & J.E. NICKESON
The BOREAS RSS-14 team collected and processed several Level-1 GOES-7 and GOES-8 image data sets for 1994-1996, and GOES-7 Level-2 for 1994 over the BOREAS study region. This data set contains shortwave and longwave radiation images at the surface and top of the atmosphere derived from collected GOES-8 data. These GOES-8 Level-2 data cover the period from 12-Feb-1996 to 22-Oct-1996. There are images missing from the temporal series. The main difference between this data set...

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