1,616 Works

LBA-ECO CD-32 Flux Tower Network Data Compilation, Brazilian Amazon: 1999-2006

S.R. SALESKA, H.R. DA ROCHA, A.R. HUETE, A.D. NOBRE, P.E. ARTAXO & Y.E. SHIMABUKURO
This data set is a compilation of carbon and energy eddy covariance flux, meteorology, radiation, canopy temperature, humidity, and CO2 profiles and soil moisture and temperature profile data that were collected at nine towers across the Brazilian Amazon. Independent investigators provided the data from a variety of flux tower projects over the period 1999 thru 2006. The data have been harmonized across projects, additional quality control checks were performed, and the data were aggregated to...

NACP Regional: Gridded 1-deg Observation Data and Biosphere and Inverse Model Outputs

Y. WEI, W.M. POST, R.B. COOK, D.N. HUNTZINGER, P.E. THORNTON, A.R. JACOBSON, I.T. BAKER, J.M. CHEN, F. CHEVALLIER, F.M. HOFFMAN, A.K. JAIN, SHUGUANG LIU, R. LOKUPITIYA, D.A. MCGUIRE, A.M. MICHALAK, G.G. MOISEN, R.P. NEILSON, P. PEYLIN, C.S. POTTER, B. POULTER, D. PRICE, J.T. RANDERSON, C. RODENBECK, H. TIAN, E. TOMELLERI … & M. ZHAO
This data set contains standardized gridded observation data, terrestrial biosphere model output data, and inverse model simulations of carbon flux parameters that were used in the North American Carbon Program (NACP) Regional Synthesis activities. The data set provides five observation data files (MODIS GPP, MODIS NPP, FIA forest biomass/forest area, NASS crop NPP, and NASS agricultural land fraction) and simulation results from 18 terrestrial biosphere models (TBM) (28 variables; 114 files) and seven inverse models...

Global Ocean Surface Water Partial Pressure of CO2 Database: Measurements Performed During 1957-2012 (Version 2012)

Oak Ridge National Laboratory Environmental Sciences Division

Underway measurements of surface partial pressure of CO2 during the R/V Atlantis Cruise in the Atlantic Ocean on CLIVAR Repeat Hydrography Section A20 (Apr. 19 - May 15, 2012)

Oak Ridge National Laboratory Environmental Sciences Division

LBA-ECO ND-30 Fractional Cover of Mixed Land Use Ranches, Para and Rondonia, Brazil

E.A. DAVIDSON, G.P. ASNER, T.A. STONE, C. NEILL & R.D.O. FIGUEIREDO
This data set contains images of fractional cover estimates of photosynthetic vegetation (PV) canopy, nonphotosynthetic vegetation (NPV), and exposed soils (S) derived from Landsat images (30-m resolution) obtained for two ranches in the Brazilian Amazon from 1996 to 2002. The Fazenda Vitoria ranch is located in eastern Para near the city of Paragominas and is a mosaic of primary forest, logged forest, secondary forest, and pasture with moderately dissected topography. The Fazenda Nova Vida ranch...

An update to the Surface Ocean CO2 Atlas (SOCAT version 2) Gridded Data Products

Oak Ridge National Laboratory Environmental Sciences Division

NACP Integrated Wildland and Cropland 30-m Fuel Characteristics Map, U.S.A., 2010

N.H.F. FRENCH, D. MCKENZIE, N. HAMERMESH & J. MCCARTY
The data set provides a 30-m comprehensive fuelbed characteristics map for both the wildland and cropland areas of the conterminous United States (CONUS) for 2010. This integrated product is the result of combining the spatially discrete Fuel Characteristic Classification System (FCCS) data of the US Forest Service (USFS) with the crop-and grassland-specific information of the US Department of Agriculture 's (USDA's) Cropland Data Layer (CDL). By combining the spatially discrete details of the FCCS data...

LBA-ECO CD-06 Flux of CO2 from Amazon Mainstem Rivers, Tributaries, and Floodplains

J.E. RICHEY, J.M. MELACK, A.K. AUFDENKAMPE, M.V.R. BALLESTER & L.L. HESS
This data set provides estimates of monthly carbon dioxide (CO2) flux from the Amazon mainstem rivers, tributary stream networks, and their associated varzeas (floodplains). CO2 flux was calculated using two aggregation approaches: for defined river basins (data file #2) and for defined river reaches (figure 2). Flux was calculated from (1) estimated surface water area by month for the Amazon mainstem rivers, associated varzeas, and tributary stream networks, (2) mean daily partial pressures of CO2...

A Global Database of Litterfall Mass and Litter Pool Carbon and Nutrients

E.A. HOLLAND, W.M. POST, E.G. MATTHEWS, J.M. SULZMAN, R. STAUFER & O.N. KRANKINA
Measurement data of aboveground litterfall and littermass and litter carbon, nitrogen, and nutrient concentrations were extracted from 685 original literature sources and compiled into a comprehensive database to support the analysis of global patterns of carbon and nutrients in litterfall and litter pools. Data are included from sources dating from 1827 to 1997. The reported data include the literature reference, general site information (description, latitude, longitude, and elevation), site climate data (mean annual temperature and...

NACP Peatland Landcover Type and Wildfire Burn Severity Maps, Alberta, Canada

L.L. BOURGEAU-CHAVEZ, S. ENDRES, E. BANDA, R. POWELL, M.R. TURETSKY, B. BENSCOTER & E.S KASISCHKE
This data set provides landcover maps of (1) peatland type (bog, fen, marsh, swamp) with levels of biomass (open, forested) and (2) Burn Severity Index (BSI) (Dyrness and Norum, 1983) for four wildfire areas in northern Alberta, Canada. The four wildfire sites include the Utikuma fire site of 2011, Kidney Lake fire site of 2011, Fort McMurray west fire site of 2009, and Fort McMurray east fire site of 2009. The peatland classification at 12.5-m...

JERS-1 Synthetic Aperture Radar, 100-m Mosaics, South America: 1995-1996, R1

A. WONG, B. CHAPMAN & A. ROSENQVIST
This data set provides ~100-m resolution image mosaics of South America acquired during the low flood season between September and December 1995 and during the high flood season between May and July of 1996. The images cover the same areas during both seasons and were obtained from the Japanese Earth Resources Satellite 1 (JERS-1) Synthetic Aperture Radar (SAR) of the National Space Development Agency of Japan (NASDA). The data were "mosaicked" into 34 tiles for...

Daymet: Monthly Climate Summaries on a 1-km Grid for North America, Version 2

P.E. THORNTON, M.M. THORNTON, B.W. MAYER, N. WILHELMI, Y. WEI, R. DEVARAKONDA & R.B. COOK
This data set provides monthly summary climate data at 1-km x 1-km spatial resolution for four Daymet variables; minimum and maximum temperature, precipitation, and vapor pressure. These single month summary data products are produced for each month for individual years and covers the period of record from 1980 to 2014. The monthly climatological summaries are derived from the much larger data set of daily weather parameters (Thornton et al., 2014), produced on a 1-km x...

A Compilation of Global Soil Microbial Biomass Carbon, Nitrogen, and Phosphorus Data

X. XU, P.E. THORNTON & P. POTAPOV
This data set provides the concentrations of soil microbial biomass carbon (C), nitrogen (N) and phosphorus (P), soil organic carbon, total nitrogen, and total phosphorus at biome and global scales. The data were compiled from a comprehensive survey of publications from the late 1970s to 2012 and include 3,422 data points from 315 papers. These data are from soil samples collected primarily at 0-15 cm depth with some from 0-30 cm. In addition, data were...

LBA-ECO LC-22 Field Validation of MODIS Deforestation Detection, Brazil, 2005

R.S. DEFRIES, Y.E. SHIMABUKURO, D.C. MORTON, L.O. ANDERSON & F.D.B. ESPARITO-SANTO
This data set contains field observations, corresponding GPS points, and point and polygons of deforested areas in the state of Mato Grosso, Brazil, for the period March 17-24,2005. Fieldwork was conducted in the regions surrounding Sinop, Mato Grosso, with specific emphasis on large clearings occurring in the Xingu Basin. The field campaign was designed to validate preliminary MODIS deforestation products designed to detect deforestation during the wet season. There are five data files with this...

Daymet: Daily Surface Weather Data on a 1-km Grid for North America, Version 2

P.E. THORNTON, M.M. THORNTON, B.W. MAYER, N. WILHELMI, Y. WEI, R. DEVARAKONDA & R.B. COOK
This data set provides Daymet output data as mosaicked gridded estimates of daily weather parameters for North America, including continuous surfaces of day length, precipitation, shortwave radiation, snow water equivalent, maximum air temperature, minimum air temperature, and water vapor pressure. The Daymet data product was derived from selected meteorological station data by interpolation and extrapolation algorithms. The data product covers the period January 1, 1980 to December 31 of the most recently processed calendar year...

LBA-ECO CD-17 Secondary Forest Survey, Para and Rondonia, Brazil: 2002-2003

W.A. SALAS, D.S. ALVES, M.J. DUCEY, D.J. ZARIN & J. QI
This data set provides measurements for diameter at breast height (DBH), tree height, distance from tree stems to the furthest canopy element, and a species survey of secondary forests in Para and Rondonia, Brazil, from 2002-2003. The forest areas were defined as Type A and Type B stands. Measurements were made in the overstory, understory, and midstory of each stand. Type A stands were sampled intensively, with the goal of providing high-fidelity spatial information about...

LBA-ECO LC-02 Biophysical Measurements of Forests, Acre, Brazil: 1999-2002

D. SELHORST & I.F. BROWN
This data set provides diameter at breast height (DBH) measurements for 1,063 trees located at the Catuaba Experimental Farm, and 812 trees located in the Humaita Forest Reserve. Both sites are in the state of Acre, southwest Amazonia, Brazil. Measurements were made on individuals with DBH between 10 and 35 cm and individuals with DBH > 35 cm. The Catuaba Experimental Farm is part of a forest fragment of approximately 800 ha. The Humaita Forest...

Soil Carbon Estimates in 20-cm Layers to 1-meter Depth, Conterminous US, 1970-1993

T.O. WEST
This data set provides a soil map with estimates of soil carbon (C) in g C/m2 for 20-cm layers from the surface to one meter depth for the conterminous United States.STATSGO v.1 (State Soil Geographic Database, Soil Survey Staff, 1994) data were used to estimate by 20-cm intervals to a 1-m depth the mean soil carbon for each of the STATSGO-delineated soil map units. These map units are the polygons represented in the provided Shapefile...

LBA-ECO CD-37 Secondary Forest Biomass and Age Class, Rondonia, Brazil

E.H. HELMER, M.A. LEFSKY & D.A. ROBERTS
This data set provides stand age, forest formation, and land cover classification maps, and estimates of landscape-level above-ground live woody biomass (AGLB) for secondary forests in Rôndonia, Brazil. The Threshold Age Mapping Algorithm (TAMA) was applied to a densely spaced time series of Landsat images (1975 to 2003) to derive forest age. Forest type and land cover for 2003 were mapped with decision tree classification of three dates of Landsat imagery. The AGLB of the...

Lund-Potsdam-Jena Wetland Hydrology and Methane DGV Model (LPJ-WHyMe v1.3.1)

R. WANIA, I. ROSS & I.C. PRENTICE
This model product provides the Fortran 77 source code for the Lund-Potsdam-Jena (LPJ) Wetland Hydrology and Methane Dynamic Global Vegetation Model (LPJ-WHyMe v1.3.1), auxiliary C++ routines, ASCII and NetCDF input data, and NetCDF example output data. LPJ-WHyMe v1.3.1 simulates peatland hydrology, permafrost dynamics, peatland vegetation, and methane emissions. The model processes can be simulated on an area-averaged 0.5 or 1.0 degree grid cell basis at global, regional, or site scales and on a daily, monthly,...

LBA-ECO LC-21 Selective Logging Activity in the Brazilian Amazon: 2000-2002

G.P. ASNER, D.E. KNAPP, E.N. BROADBENT, P.J.C. OLIVEIRA, M.M. KELLER & J.N.M. SILVA
This data set provides the results of analyses of Landsat Enhanced Thematic Mapper Plus (ETM+) images for selective logging activity in the Brazilian states of Para, Mato Gross, Rondonia, Roraima, and Acre over the years 1999 through 2001. Images were analyzed using the Carnegie Landsat Analysis System (CLAS) to detect and to quantify the amount of damage due to selective logging in the major timber-production states of the Brazilian Amazon. This approach provided automated image...

Tree Canopy Cover for the Circumpolar Taiga-Tundra Ecotone: 2000-2005

K.J. RANSON, P.M. MONTESAN & R. NELSON
This data set provides a map of selected areas with defined tree canopy cover over the circumpolar taiga-tundra ecotone (TTE). Canopy cover was derived from the 500-meter MODIS Vegetation Continuous Fields (VCF) product as averaged over six years from 2000-2005 and processed as described in Ranson et al. (2011). This process identified patches of low tree canopy cover which are indicative of the transition from forest to tundra and differentiate the circumpolar taigaâ tundra ecotone...

NACP CMS: Land Cover Projections (5.6-km) from GCAM v3.1, Conterminous US, 2005-2095

T.O. WEST & Y. Le Page
The data provided are annual land cover projections for years 2005 through 2095 generated by the Global Change Assessment Model (GCAM) Version 3.1. For the conterminous USA, the GCAM global gridded results were downscaled to ~5.6 km (0.05 degree) resolution. For each 5.6 x 5.6 km area, the annual land cover percentage comprised by each of the nineteen different land cover classes/plant functional types (PFTs) of the Community Land Model (CLM) (Table 1) are provided....

ISLSCP II Reanalysis Near-Surface Meteorology Data

P. DIRMEYER, M. ZHAO, G. WHITE & W. EBISUZAKI
This data set for the ISLSCP Initiative II data collection provides near surface meteorological variables, fluxes of heat, moisture and momentum at the surface, and land surface state variables, all with a spatial resolution of 1 degree in both latitude and longitude. There are four temporal categories of data: time invariant and monthly mean annual cycle fields (together referred to as "fixed" fields), monthly mean fields, monthly 3-hourly diurnal, and 3-hourly fields. Two types of...

Global Ocean Surface Water Partial Pressure of CO2 Database: Measurements Performed During 1957-2013 (Version 2013)

T. Takahashi, S. Sutherland & A. Kozyr

Registration Year

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    27
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    93
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    73
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    89
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    42
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    58
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    79
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    1,039

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