1,039 Works

BOREAS TGB-12 Soil Carbon Data: NSA

S.E. TRUMBORE, J.W. HARDEN, E. SUNDQUIST & G.C. WINSTON
The BOREAS TGB-12 team made measurements of soil carbon inventories, carbon concentration in soil gases, and rates of soil respiration at several sites to estimate the rates of carbon accumulation and turnover in each of the major vegetation types. TGB-12 data sets include soil properties at tower and selected auxiliary sites in the BOREAS NSA and data on the seasonal variations in the radiocarbon content of CO2 in the soil atmosphere at NSA tower sites....

SAFARI 2000 MOPITT Tropospheric Carbon Monoxide, Southern Africa, Dry Season 2000

D.P. EDWARDS, J.C. GILLE, M.N. DEETER, D. MAO & J.R. DRUMMOND
The MOPITT (Measurements Of Pollution In The Troposphere) instrument on the NASA Terra Satellite makes measurements of infrared radiation originating from the surface of the planet and isolates the energy being radiated from carbon monoxide (CO). By using appropriate data analysis techniques, concentration profiles of CO (Level-2 (L2) data) can be obtained on a global basis at a reasonably high horizontal (~22km) and vertical resolution (~3km).The MOPITT Level-3 (L3) data products provided in this data...

SAFARI 2000 CV-580 Aerosol and Cloud Data, Dry Season 2000 (CARG)

P.V. HOBBS
The Cloud and Aerosol Research Group (CARG) of the University of Washington participated in the SAFARI-2000 Dry Season Aircraft campaign with their Convair-580 research aircraft. This campaign covered five countries in southern Africa from 10 August through 18 September, 2000. Various types of measurements were obtained on the thirty-one research flights of the Convair-580 in SAFARI-2000, to study their relationships to simultaneous measurements from satellites (particularly Terra), other research aircraft, and SAFARI-2000 ground-based measurements and...

BOREAS TE-08 Aspen Bark Spectral Reflectance Data

S. SPENCER & B.N. ROCK
The BOREAS TE-08 team collected in-lab spectral reflectance data for aspen bark and leaves from three sites within the BOREAS SSA from 24-May-1994 to 16-Jun-1994 (IFC 1), 19-Jul-1994 to 08-Aug-1994 (IFC 2), and 30-Aug-1994 to 19-Sep-1994 (IFC 3). One to nine trees from each site were sampled during the three IFCs. Each tree was sampled in five different locations for bark spectral properties: BS, US, BR, BT, and BO. Additionally, a limited number of LV...

BOREAS HYD-03 Snow Pit Measurements: 1996

J.P. HARDY & R.E. DAVIS
The BOREAS HYD-03 team collected several data sets related to the hydrology of forested areas. This data set contains measurements of snow depth, snow density in 3-cm intervals, an integrated snow pack density and snow water equivalent (SWE), and snow pack physical properties from snow pit evaluation taken in 1994 and 1996. The data were collected from several sites in both the SSA and the NSA. A variety of standard tools were used to measure...

BOREAS Level-1B TIMS Imagery: At Sensor Radiance in BSQ Format

S. CHERNOBIEFF
The BOREAS Staff Science Aircraft Data Acquisition Program focused on providing the research teams with the remotely sensed satellite data products they needed to compare and spatially extend point results. For BOREAS, the TIMS imagery, along with other aircraft images, was collected to provide spatially extensive information over the primary study areas. The level-1B TIMS images cover the time periods of 16-Apr-1994 to 20-Apr-1994 and 06-Sep-1994 to 17-Sep-1994. The system calibrated images are stored in...

LBA Regional Potential Vegetation, 5-min (Ramankutty and Foley)

N. RAMANKUTTY & J.A. FOLEY
The data set consists of a subset for the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., longitude 85 deg to 30 deg W, latitude 25 deg S to 10 deg N) of the 5-min resolution Global Potential Vegetation data set developed by Navin Ramankutty and Jon Foley at the University of Wisconsin. Data are available in both ASCII GRID and binary image file formats.The original map was...

BOREAS AFM-05 Level-1 Upper Air Network Data, R1

A. BARR & C. HRYNKIW
The BOREAS AFM-05 team collected and processed data from the numerous radiosonde flights during the project. The goals of the AFM-05 team were to provide large scale definition of the atmosphere by supplementing the existing AES aerological network, both temporally and spatially. This data set includes basic upper-air parameters collected from the network of upper-air stations during the 1993, 1994, and 1996 field campaigns over the entire study region.

SAFARI 2000 Land Cover from AVHRR, 1-Deg, 1987 (Defries and Townshend)

R.S. DEFRIES & J.R.G. TOWNSHEND
This data set consists of a southern African subset of the University of Maryland (UMD) 1-degree Global Land Cover product in ASCII GRID and binary image formats. The UMD 1-degree Global Land Cover product was produced by researchers at the Laboratory for Global Remote Sensing Studies (LGRSS) at UMD. The product is based on Advanced Very High Resolution Radiometer (AVHRR) maximum monthly composites for 1987 of Normalized Difference Vegetation Index (NDVI) values at approximately 8-km...

BOREAS RSS-08 Snow Maps Derived from Landsat TM Imagery

D.K. HALL, A.T.C. CHANG & J.L. FOSTER
The BOREAS RSS-08 team utilized Landsat TM images to perform mapping of snow extent over the SSA. This data set consists of two Landsat TM images which were used to determine the snow-covered pixels over the BOREAS SSA on 18-Jan-1993 and on 06-Feb-1994. Companion files include example thumbnail images that may be viewed using a convenient viewer utility.

BOREAS TE-23 Canopy Architecture and Spectral Data from Hemispherical Photos

P.M. RICH
The BOREAS TE-23 team collected hemispherical photographs in support of its efforts to characterize and interpret information on estimates of canopy architecture and radiative transfer properties for most BOREAS study sites. Various OA, OBS, OJP, YJP, and YA sites in the boreal forest were measured from May to August 1994. The hemispherical photographs were used to derive values of LAI, Leaf angle, Gap fraction, and Clumping index. This documentation describes these derived values. The derived...

BOREAS RSS-20 POLDER Radiance Images from the NASA C-130

M. LEROY, F.-M. BREON, P. BICHERON & O. HAUTECOEUR
These data are a subset of images collected by the POLDER instrument over tower sites in the BOREAS study areas during the IFCs in 1994. The POLDER images presented here from the NASA/Ames C-130 aircraft are made available for illustration purposes only. The data are stored in binary image-format files.

BOREAS Follow-On HMet-04 1996-1998 NSA Meteorological Data

A.K. BETTS, S.R. SHEWCHUK, H. OSBORNE, K. YOUNG & V. WITTROCK
As part of the BOREAS Follow-on, an extended period of data collection was supported in the NSA because of the continued efforts at the NSA-OBS site. This data set contains near-surface meteorological data collected and averaged over 15 minute intervals from two sites in the NSA, the SRC tower at the Thompson airport (YTH) and a temporary walkup wooden tower at the Old Black Spruce (OBS) tower site.

BOREAS TF-11 SSA Fen 1996 Water Surface Film Capping Data

D.P. BILLESBACH & 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. The data described in this document were made by the TF-11 team at the SSA Fen site to quantify the effect that the films observed to form on open water surfaces had on the transfer of carbon dioxide and methane from the water to the air. Measurements of fluxes of carbon dioxide and methane...

SAFARI 2000 Annual Soil Respiration Data (Raich and Schlesinger 1992)

J.W. RAICH & W.H. SCHLESINGER
The data set consists of a southern African subset of the "Global Annual Soil Respiration Data (Raich and Schlesinger 1992)" data set. The data file is in ASCII text format and contains four observations. This data set is a compilation of soil respiration rates (g C m -2 yr -1) from terrestrial and wetland ecosystems reported in the literature prior to 1992. These rates were measured in a variety of ecosystems to examine rates of...

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 Monthly Climatology for the 20th Century (New et al.)

M. NEW, M. HULME & P.D. JONES
This data set characterizes mean monthly surface climate over the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., longitude 85 deg to 30 deg W, latitude 25 deg S to 10 deg N) during nearly all of the 20th Century. The data set is gridded at 0.5-degree latitude/longitude resolution and includes seven variables: precipitation, mean temperature, diurnal temperature range, wet-day frequency, vapour pressure, cloud cover, and ground-frost frequency....

LBA Regional Land Cover from AVHRR, 1-Degree, 1987 (Defries and Townshend)

R.S. DEFRIES & J.R.G. TOWNSHEND
This data set consists of a subset for the study area of the Large Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) in South America (i.e., longitude 85 deg to 30 deg W, latitude 25 deg S to 10 deg N) of the University of Maryland (UMD) 1-degree Global Land Cover product in ASCII GRID and binary image formats.The UMD 1-degree Global Land Cover product was produced by researchers at the Laboratory for Global Remote Sensing Studies...

NWS Daily Climatology Data: 1977 (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...

GLOBAL OCEAN DATA ANALYSIS PROJECT (GLODAP): RESULTS AND DATA

Oak Ridge National Laboratory Environmental Sciences Division

BOREAS TE-02 Foliage Respiration Data

M.G. RYAN & M. LAVIGNE
The BOREAS TE-02 team collected several data sets in support of its efforts to characterize and interpret information on the respiration of the foliage, roots, and wood of boreal vegetation. This data set contains measurements of foliar respiration conducted in the NSA during the growing season of 1994.

NPP Grassland: Central Plains Experimental Range (SGS), USA, 1939-1990, R1

D. URESK, P.L. SIMS & J.L. DODD
This data set records the productivity of a semiarid shortgrass prairie steppe located in the Central Plains Experimental Reserve (CPER)/Pawnee National Grassland in north-central Colorado. There are nine data files (.txt). Four files contain measurements of monthly dynamics of harvested above-ground plant biomass, one file each for untreated, irrigated, fertilized, and irrigated + fertilized plots for the period 1970 to 1975. The fifth file contains annual above-ground NPP estimates for the untreated plot for the...

RLC AVHRR-Derived Land Cover, Former Soviet Union, Far East, 1-km, 1990

T.A. STONE & P. SCHLESINGER

BOREAS TE-09 in situ Understory Spectral Reflectance within the NSA

GEOFFREY EDWARDS, K.P.B. THOMSON & A.P. VIAU
Spectral reflectance of the forest understory at the ground level, in three boreal forest sites of Northern Manitoba (56 degrees N latitude and 98 degrees W longitude), were obtained and analyzed. The objective of the study was to estimate light levels inside the forest canopy and to link these estimates with airborne images taken above the canopy, in order to tie the photosynthetic experiments and models with the remotely sensed measurements. The Boreal Ecosystem-Atmospheric Study...

SAFARI 2000 FPAR TRAC Data for Mongu, Zambia, 1999-2002

J.L. PRIVETTE, M.M. MUKELABAI & K.F. HUEMMRICH
Data from the Tracing Architecture and Radiation of Canopies (TRAC) instrument were processed to determine the fraction of intercepted photosynthetically active radiation (FPAR) at the EOS Validation Core Site in Kataba Local Forest, approximately 20 km south of Mongu, Zambia. Measurements began in 1999 and continued into 2002, with measurements collected about every month. TRAC contains three pyranometers sensitive to PAR wavelengths, with two sensors upward looking and one downward looking. The TRAC instrument was...

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