1,525 Works

Bowen Ratio Surface Flux: GSFC (FIFE)

W.P. KUSTAS
The Bowen Ratio Surface Flux Observations (GSFC) Data Set contains data collected using the Bowen Ratio Techniques. The major data collection effort was conducted in 1987 when 16 stationary sites were equipped with Bowen ratio equipment by different groups. Surface flux measurements were made at selected sites within the FIFE area. All measurements are from a single upland site that was grazed. This station measured the fluxes of net radiation, sensible heat, and latent heat...

NPP Tropical Forest: Khao Chong, Thailand, 1962-1965, R1

T. KIRA
This data set contains one net primary productivity (NPP) data file and three climate data files (.txt format) for a fully closed tropical rainforest in the Khao Chong Reserve (7.58 N 99.8 E) in southern Thailand. The Reserve comprises 500 ha of well-preserved rainforest considered typical of the region, although maximum tree height (36 m) and biodiversity were less than in Malaysian forests. Net primary productivity (NPP) was estimated as the sum of annual net...

LBA-ECO ND-06 Land Use Effects on Soil Nutrients: A Review of Studies 1950-2001

D.A. MCGRATH, C.K. SMITH, H.L. GHOLZ & F.A. OLIVEIRA
This data set provides measurements of soil properties compiled from 39 studies on nutrient dynamics in natural forests and forest-derived land uses (pasture, shifting cultivation and tree plantations) conducted in Amazonia over the period of 1950-2001. The initial literature survey for the data consisted of more than 100 studies conducted during this period. The objectives of this project were to compare soil data from major land uses across Amazonia and identify gaps in present knowledge...

NWS Daily Climatology Data: 1990 (SNF)

F.G. HALL, K.F. HUEMMRICH, D.E. STREBEL, S.J. GOETZ, J.E. NICKESON & K.D. WOODS
Weather data were collected by the National Weather Service in International Falls, Minnesota. International Falls is about 80 miles from the SNF, but the weather data is representative of the area. Total solar insolation measurements were made at Fall Lake Dam in Winton, Minn. by Prof. Donald Baker of the Department of Soil Science at the University of Minnesota, St. Paul. Insolation values were measured using a Yellow Springs solar cell calibrated against an Eppley...

LBA-ECO LC-14 Modeled Deforestation Scenarios, Amazon Basin: 2002-2050

B.S. SOARES-FILHO, D.C. NEPSTAD, L.M. CURRAN, E. VOLL, R.A. GARCIA, C.A. RAMOS, A.J. MCDONALD, P.A. LEFEBVRE & P. SCHLESINGER
This data set provides the results of the two modeled scenarios for future patterns of deforestation across the Amazon Basin from 2002 to 2050. This larger defined Amazon Basin (PanAmazon area) includes the Amazon River watershed, the Legal Amazon in Brazil, and the Guiana region. The model SimAmazonia was used to simulate monthly deforestation in the Amazon Basin from 2002 to 2050 for two scenarios: (1) a "Business-as-Usual" scenario, which considered the deforestation trends across...

Net Radiation and Albedo from MODIS for Xingu River Basin, Brazil, 2000-2012

D.V. SILVERIO, P.M. BRANDO, M.N. MACEDO, P.S.A. BECK, M.M.C. BUSTAMANTE & M.T. COE
This dataset provides daily average land surface net radiation (Rnet) as an 8-day time series at approximately 0.5 km resolution for the upper Xingu River Basin in Mato Grosso, Brazil, from 2000-02-18 to 2012-11-16. The parameters needed to calculate Rnet, including albedo, downward shortwave radiation (RSnet), upward longwave radiation (RLnet[up]) and downward longwave radiation (RLnet[down]) were derived from MODIS products (MOD43A3, MOD11A2, MOD08E3) and local weather station data. Parameters were estimated under all sky conditions....

Soil Moisture Data: Peck (FIFE)

E.L. PECK & T.R. CARROLL
Water content measurements by gravimetric methods involve weighing a wet sample, removing the water via drying in an oven, and reweighing the sample to determine the amount of water removed. Water content then is obtained by dividing the difference between wet and dry masses by the mass of the dry sample to obtain the ratio of the mass of water to the mass of dry soil. When multiplied by 100, this becomes the percentage of...

LBA-ECO CD-08 Tree Diameter Measurements, Jacaranda Plots, Manaus, Brazil: 1999-2001

E.S. TRIBUZY, J.Q. CHAMBERS, R.P. DA SILVA, J. DOS SANTOS & N. HIGUCHI
This data set provides diameter at breast height (DBH) measurements made of trees in a dense terra-firme tropical moist forest at the ZF-2 Experimental Station, 90 km north of Manaus, Brazil. DBH was measured over two transects (East to West and North to South) which were established in 1996 by the Jacaranda Project (agreement between the National Institute for Research in the Amazon (INPA) and the Japan International Cooperation Agency, JICA). For each tree, a...

BOREAS CD-ROM Set, 12 disks

J.A. NEWCOMER, D. LANDIS, S. CONRAD, S. CURD, K.F. HUEMMRICH, D.E. KNAPP, A. MORRELL, J.E. NICKESON, A. PAPAGNO, D. RINKER, R. STRUB, T. TWINE, F.G. HALL & P.J. SELLERS
The BOREAS CD-ROM set is a 12-disk collection containing point data sets and selected image and vector data from the Boreal Ecosystem-Atmosphere Study, which was conducted during 1994-1996. Additional image and vector data are available on-line through the ORNL DAAC Web site. Cite this CD-ROM set as follows: Newcomer, J., D. Landis, S. Conrad, S. Curd, K. Huemmrich, D. Knapp, A. Morrell, J. Nickeson, A. Papagno, D. Rinker, R. Strub, T. Twine, F. Hall, and...

NACP LiDAR-based Biomass Estimates, Boreal Forest Biome, North America, 2005-2006

H. MARGOLIS, G. SUN, P.M. MONTESANO & R.F. NELSON
This data set provides estimates of aboveground biomass (AGB) for defined land cover types within World Wildlife Fund (WWF) ecoregions across the boreal biome of Alaska and western and eastern Canada, roughly between 45 and 70 degrees N. The study focused on within-growing-season data, i.e. leaf-on conditions. The AGB estimates were derived from a series of models that first related ground-based measured biomass to Portable Airborne Laser System (PALS) LiDAR measurements, and a second set...

BigFoot Field Data for North American Sites, 1999-2003

S.T. GOWER & A.A. KIRSCHBAUM
The BigFoot project gathered field data for selected EOS Land Validation Sites in North America from 1999 to 2003. Data collected and derived for varying intervals at the BigFoot sites and archived with this data set include FPAR, nitrogen content, allometry equations, root biomass, LAI, tree biomass, soil respiration, NPP, landcover images, and vegetation inventories.Each site is representative of one or two distinct biomes, including the Arctic tundra; boreal evergreen needleleaf forest; temperate cropland, grassland,...

Green Vegetation Fraction High-Resolution Maps for Selected US Tidal Marshes, 2015

L. BALLANTI & K.B. BYRD
This dataset provides 30m resolution maps of the fraction of green vegetation within tidal marshes for six estuarine regions of the conterminous United States: Cape Cod, MA; Chesapeake Bay, MD; Everglades, FL; Mississippi Delta, LA; San Francisco Bay, CA; and Puget Sound, WA. Maps were derived from a 1m classification of 2013 to 2015 National Agriculture Imagery Program (NAIP) images as tidal marsh green vegetation, non-vegetation, and open water. Using this high-resolution map, the percent...

PnET-BGC: Modeling Biogeochemical Processes in a Northern Hardwood Forest Ecosystem

S.S. GBONDO-TUGBAWA, C.T. DRISCOLL, J.D. ABER & G.E. LIKENS
This archived model product contains the directions, executables, and procedures for running PnET-BGC to recreate the results of Gbondo-Tugbawa, S.S., C.T. Driscoll , J.D. Aber and G.E. Likens. 2001. The evaluation of an integrated biogeochemical model (PnET-BGC) at a northern hardwood forest ecosystem. Water Resources Research 37:1057-1070. Gbondo-Tugbawa et al,. 2001 Excerptfrom Abstract: An integrated biogeochemical model (PnET-BGC) was formulated to simulate chemical transformations of vegetation, soil, and drainage water in northern forest ecosystems. The...

LBA-ECO CD-06 Soil Classification Map, Ji-Parana River Basin, Rondonia, Brazil

M.V.R. BALLESTER, D. DE C. VICTORIA, A.V. KRUSCHE, R.L. VICTORIA & J.E. RICHEY
This data set provides a digital map of soil orders for the Ji-Parana River Basin, in the state of Rondonia, Brazil (Western Amazonia). Soil orders wereƃ manually digitized from a 1:500,000 map from EMBRAPA originally published in 1983. Oxisols and Ultisols are the predominant soil types in the basin, encompassing 47% and 24% of the total drainage area, respectively. Entisols cover 14%, Alfisols 13% and Eptisols 2% of the basin (Ballester et al., 2003). One...

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...

BOREAS TE-06 Biomass and Foliage Area Data

S.T. GOWER & J.G. VOGEL
The BOREAS TE-06 team collected several data sets in support of its efforts to characterize and interpret information on the plant biomass, allometry, biometry, sapwood, leaf area index, net primary production, soil temperature, leaf water potential, soil CO2 flux, and multivegetation imagery of boreal vegetation. This data set contains measurements of estimates of the standing biomass and leaf area index for the plant species at the TF, CEV, and AUX sites in the SSA and...

AirMOSS: L4 Modeled Net Ecosystem Exchange (NEE), Continental USA, 2012-2014

A.A. ALI, K. ZHANG, A. Antonarakis & P.R. MOORCROFT
This data set provides Level 4 estimates of Net Ecosystem Exchange (NEE) of CO2 across the conterminous USA at a spatial resolution of 50 km. Modeled estimates are provided at hourly and monthly temporal resolutions, from January 2012 through October 2014. The AirMOSS L4 Regional NEE data were produced by the Ecosystem Demography Biosphere Model (ED2) augmented by the AirMOSS-derived L2/3 root zone soil moisture data as an additional input. The AirMOSS soil moisture data...

SAFARI 2000 Plant and Soil C and N Isotopes, Southern Africa, 1995-2000

J.N. ARANIBAR & S.A. MACKO
This data set contains measurements of the concentration and stable carbon (13C / 12C) and nitrogen (15N / 14N) isotope ratios of plant (leaves, roots and fungi) and soil samples from southern Africa. The study sites in Zambia, Botswana, Namibia, and South Africa are located along the Kalahari Transect precipitation gradient. Some of the sites were relatively undisturbed while others had different intensities of cultivation, domestic grazing, and fires. The data were collected to detect...

LBA-ECO LC-07 Lake Sediment Nutrient Data, Lago Calado, Brazil: 1982-1984

L.K. SMITH, J.M. MELACK & D.E. HAMMOND
This data set reports lake sediment texture and porosity, carbon (C), nitrogen (N), and phosphorus (P) content of surficial sediments, 210Pb-derived nutrient accumulation rates in sediments, and burial rates of C, N, and P in sediments at eleven locations in Lake Calado, Amazonas, Brazil. Field samples were collected between February 1982 and August 1984. There are eight comma-delimited ASCII data files with this data set.

SAFARI 2000 Pre- and Post-fire Reflectance near Kaoma, Zambia, Dry Season 2000

J.N.M. SILVA, J.M.C. PEREIRA & A.C.L. SA
The main goal of this study was to analyze the possibility of estimating combustion completeness based on fire-induced spectral reflectance changes of surface features by the development of relationships between combustion completeness and pre-fire to post-fire spectral reflectance changes, in the green, red, and near-infrared spectral domains (equivalent to Landsat ETM+ channels 2, 3, and 4). Experimental burns were carried out in the Western Province of Zambia in dambos (hydromorphic grasslands) and miombo woodlands during...

BOREAS RSS-10 TOMS Circumpolar One-Degree PAR Images

D. DYE & B.N. HOLBEN
The BOREAS RSS-10 team investigated the magnitude of daily, seasonal, and yearly variations of PAR from ground and satellite observations. This data set contains satellite estimates of surface-incident photosynthetically active radiation (PAR, 400-700 nm, MJ m-2) at 1 degree spatial resolution. The spatial coverage is circumpolar from latitudes of 41 to 66 degrees N latitude. The temporal coverage is from May through September for years 1979 through 1989. Eleven-year statistics are also provided: mean, standard...

LiDAR-based Biomass Estimates, Boreal Forest Biome, Eurasia, 2005-2006

C.S. NEIGH, R.F. NELSON, K.J. RANSON, H. MARGOLIS, P.M. MONTESANO, G. SUN, V. KHARUK, E. NAESSET, M.A. WULDER & H. ANDERSON
This data set provides estimates of aboveground biomass (AGB) for defined land cover types within World Wildlife Fund (WWF) ecoregions across the boreal biome of eastern and western Eurasia, roughly between 50 and 70 degrees N. The study focused on within-growing-season data, i.e. leaf-on conditions. The AGB estimates were derived from a series of models that first related ground-based measured biomass to airborne data collected with an Optech Airborne Laser Terrain Mapper (ALTM) 3100, and...

ISLSCP II Global Gridded Soil Characteristics

R.J. SCHOLES & E. BROWN DE COLSTOUN
This data set provides gridded data for selected soil parameters derived from data and methods developed by the Global Soil Data Task, an international collaborative project with the objective of making accurate and appropriate data relating to soil properties accessible to the global change research community. The task was coordinated by the International Geosphere-Biosphere Programme (IGBP-DIS). The data in this data set were produced by the International Satellite Land-Surface Climatology Project, Initiative II (ISLSCP II)...

BOREAS TF-11 SSA-Fen 1995 Leaf Area Index Data

T.J. ARKEBAUER & S.B. VERMA
The BOREAS TF-11 team gathered a variety of data to complement their tower flux measurements collected at the SSA Fen site. These data are LAI measurements made by the TF-11 team throughout the 1995 growing season. The data include the LAI of plants that fall into six categories: total, Carex spp., Betula pumila, Menyanthes trifoliata, Salix spp., and other vascular plants.

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