1,567 Works

LBA-ECO LC-23 ASTER and MODIS Fire Data Comparison for Brazil: 2003-2004

J.T. MORISETTE, L. GIGLIO, I.A. CSISZAR, A. SETZER, W. SCHROEDER, D.C. MORTON & C.O. JUSTICE
This data set contains data associated with MODIS fire maps generated using two different algorithms and compared against fire maps produced by ASTER. These data relate to a paper (Morisette et al., 2005) that describes the use of high spatial resolution ASTER data to evaluate the characteristics of two fire detection algorithms, both applied to MODIS-Terra data and both operationally producing publicly available fire locations. The two algorithms are NASA's operational Earth Observing System MODIS...

CARVE: L1 In-situ Carbon and CH4 Flux and Meteorology at EC Towers, Alaska, 2011-2015

W. OECHEL, J. VERFAILLIE, G. VOURLITIS & R. ZULUETA
This data set provides ground in situ flux and meteorological science data from fixed instruments at three eddy covariance tower sites located in the Alaskan Arctic tundra. Real and gap-filled observations of carbon dioxide, methane, water vapor, and latent energy flux in addition to standard meteorological and environmental variables are reported at half-hourly intervals between 2011 and 2015 for sites at Atqasuk, Barrow, and Ivotuk, Alaska. The three sites form a 300-km north-south transect on...

LBA Regional Mean Climatology, 0.5-Deg, 1930-1960, V. 2.1 (Cramer and Leemans)

W.P. CRAMER & R. LEEMANS
This data set is a subset of the global mean monthly climatology (Cramer and Leemans 1999) for 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). The data are available in ASCII grid and binary image formats.The parent database is a major update of the Leemans and Cramer database (Leemans and Cramer 1991). It contains long-term monthly...

BOREAS TF-03 NSA-OBS Tower Flux, Meteorological, and Soil Temperature Data

D. SUTTON, M.L. GOULDEN, A. BAZZAZ, B.C. DAUBE, S.-M. FAN, J.W. MUNGER & S.C. WOFSY
The BOREAS TF-03 team collected tower flux, surface meterological, and soil temperature data at the BOREAS NSA-OBS site continuously from the March 1994 through October 1996.

Mechanistic Module for Soil Nitrogen Emissions for CMAQ Model, North America, 2011

Q.Z. RASOOL, J.O. BASH & D.S. COHAN
This model product provides source code, input data files, and example model outputs for a new mechanistic soil nitrogen (N) module in-line with the Community Multiscale Air Quality (CMAQ) model 5.1 to simulate nitric oxide (NO), nitrous acid (HONO), nitrous oxide (N2O), and ammonia (NH3) soil emissions. The modeling domain covers the continental USA plus portions of northern Mexico and southern Canada, from 25 degrees south to 52 degrees north. The simulations use a 12-km...

ABoVE: MODIS-derived Maximum NDVI, Northern Alaska and Yukon Territory for 2002-2017

D. VERBYLA
This dataset provides the maximum Normalized Difference Vegetation Index (NDVI) at 1-km resolution over northern Alaska, USA and the Yukon Territory, Canada for each year from 2002-2017, as well as a 16 year maximum NDVI product. MODIS products MOD13Q1 and MYD13Q1 from Collection 6 were acquired at 250-m pixel size from June 1-August 30 of each year. Within each growing season from 2002-2017, the maximum NDVI was determined for each pixel. These maximum NDVI values...

SAFARI 2000 Fire Emission Data, Dry Season 2000

R.J. YOKELSON
As part of the Southern Africa Regional Science Initiative (SAFARI 2000), the University of Montana participated in both ground-based and airborne campaigns during the southern African dry season of 2000 to measure trace gas emissions from biofuel production and use and savanna fires, respectively.During the airborne campaign, stable and reactive trace gases were measured over southern Africa with an airborne Fourier transform infrared spectroscopy (AFTIR) onboard the University of Washington Convair-580 research aircraft in August-September...

BOREAS TGB-12 Carbon Dioxide Isotopic Content Data over the NSA

S.E. TRUMBORE, 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. This data set contains information on the carbon isotopic content of carbon dioxide sampled from soils.

BOREAS RSS-20 POLDER C-130 Measurements of Surface BRDF

M. LEROY & F.-M. BREON
This data set contains measurements of surface BRDF made by the POLDER instrument over several surface types (pine, spruce, fen) of the BOREAS SSA during the 1994 IFCs. Single-point BRDF values were acquired either from the NASA ARC C-130 aircraft or from a NASA WFF helicopter. A related data set collected from the helicopter platform is available as is POLDER imagery acquired from the C-130.

BOREAS/AES Campbell Scientific 15-minute Surface Meteorological Data: 1996

G.B. ATKINSON & B. FUNK
Canadian AES personnel collected data related to surface and atmospheric meteorological conditions over the BOREAS Region. This data set contains 15 minute meteorological data from 14 automated meteorology stations located across the BOREAS region. Included in this data are parameters of date, time, mean sea level pressure, station pressure, temperature, dewpoint, wind speed, resultant wind speed, resultant wind direction, peak wind, precipitation, maximum temperature in the last hour, minimum temperature in the last hour, pressure...

NPP Tropical Forest: Darien, Panama, 1967-1968, R1

F.B. GOLLEY
This NPP data set contains one ASCII file (.txt format). The data file contains above- and below-ground biomass, litterfall, LAI, vegetation/soil micro-nutrient content (P, K, Ca, Mg, etc.), and above-ground net primary productivity (ANPP) estimates for transitional moist/dry tropical forests at Rio Lara (wet season site) and Rio Sabana (dry season site) in Darien Province, Panama. Field measurements were made in 1967 and 1968. No climate data are provided. Apart from litter quantity, most of...

CARVE: Daily Thaw State of Boreal and Arctic Alaska from AMSR-E and SSM/I, 2003-2014

N. STEINER, K.C. MCDONALD & C.E. MILLER
This data set provides daily 10 km resolution maps of the Alaskan and Arctic Boreal land surface state as either frozen, melting, or thawed. These data are generated from passive microwave radiometer observations made from 2003 through 2014 by the Advanced Microwave Scanning Radiometer (AMSR-E) and the Special Sensor Microwave Imager (SSM/I). Data products overlap with science data collections carried out during the Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE).

CMS: Forest Inventory and Biophysical Measurements, Para, Brazil, 2012-2014

M.N. DOS-SANTOS & M.M. KELLER
This data set provides measurements for diameter at breast height (DBH), commercial tree height, and total tree height for forest inventories taken at the Fazenda Cauaxi and the Fazenda Nova Neonita, Paragominas municipality, Para, Brazil. Also included for each tree are the common, family, and scientific name, coordinates, canopy position, crown radius, and for dead trees the decomposition status. These biophysical measurements were made at Fazenda Cauaxi during 2012 and 2014 and at the Fazenda...

BOREAS TE-18 Landsat TM Physical Classification Image of the SSA

F.G. HALL & D.E. KNAPP
The objective of this classification is to provide the BOREAS investigators with a data product that characterizes the land cover of the SSA. A Landsat-5 TM image from 02-Sep-1994 was used to derive the classification. A technique was implemented that uses reflectances of various land cover types along with a geometric optical canopy model to produce spectral trajectories. These trajectories are used as training data to classify the image into the different land cover classes....

CARVE Modeled Gross Ecosystem CO2 Exchange and Respiration, Alaska, 2012-2014

K.A. LUUS & J.C. LIN
This data set provides 3-hourly estimates of gross ecosystem CO2 exchange (GEE) and respiration (autotrophic and heterotrophic) for the state of Alaska from 2012 to 2014. The data were generated using the Polar Vegetation Photosynthesis and Respiration Model (PolarVPRM) and are provided at ~ 1 km2 [1/4-degree (longitude) by 1/6-degree (latitude)] pixel resolution. The PolarVPRM produces high-frequency estimates of GEE of CO2 for North American biomes from remotely-sensed data sets. For Alaska, the model used...

BOREAS TE-02 Root 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 includes means of tree root respiration measurements on roots having diameters ranging from 0 to 2 mm conducted in the NSA during the growing season of 1994.

LBA-ECO CD-34 Landsat Fractional Land Cover Analysis, Manaus, Brazil: 2004-2005

R.I. NEGRON-JUAREZ, J.Q. CHAMBERS, G. GUIMARAES, H.C. ZENG, C.F.M. RAUPP, D.M. MARRA, G.H.P.M. RIBEIRO, S.S. SAATCHI, B.W. NELSON & N. HIGUCHI
This data set provides the results of fractional land cover analysis for nonphotosynthetic vegetation (NPV) from two Landsat images of Manaus, Brazil, for October 14, 2004, and for July 29, 2005. Both images are from Landsat 5, path 231, row 62. The Manauas area experienced a squall line with intense downbursts from January 16-18, 2005, that resulted in widespread blowdown and tree mortality. The pre- and post-disturbance Landsat images were obtained and processed using spectral...

LBA-ECO LC-22 Land Cover from MODIS Vegetation Indices, Mato Grosso, Brazil

D.C. MORTON, R.S. DEFRIES & Y.E. SHIMABUKURO
This data set provides land cover classifications for Mato Grosso, Brazil, for the years 2000-2001 and 2003-2004. The classifications were derived from annual vegetation phenology information from a time series of Collection 4, 16-day Moderate Resolution Imaging Spectroradiometer (MODIS) Normalized Difference Vegetation Index (NDVI), and the Enhanced Vegetation Index (EVI) vegetation data, at 250-m resolution. A decision tree classifier was trained using field observations and high-resolution satelite data of land cover from 2003-2004 to identify...

Aircraft Flux-Raw: Univ. Col. (FIFE)

R.L. GROSSMAN
The NCAR King Air participation in FIFE-1987 and FIFE-1989 was part of a coordinated atmospheric boundary layer component which included other aircraft, surface measurements, balloon-borne profiles, and SODAR and lidar remote sensing. The chief objective of the boundary layer component was to describe the structure of the atmospheric boundary layer over the FIFE study area, increase knowledge of the physical processes active in the daytime boundary layer, and explore the relationship of surface properties to...

BOREAS AFM-02 King Air 1994 Aircraft Flux and Moving Window Data

R.D. KELLY
The BOREAS AFM-02 team collected pass-by-pass fluxes (and many other statistics) for a large number of level (constant altitude), straight line passes used in a variety of flight patterns. The data were collected by the University of Wyoming King Air in 1994 BOREAS IFCs 1-3. Most of these data were collected at 60-70 m above ground level, but a significant number of passes were also flown at various levels in the planetary boundary layer, up...

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 TE-04 Branch Bag Data from Boreal Tree Species

J.A. BERRY
The BOREAS TE-04 team collected continuous records of gas exchange under ambient conditions from intact boreal forest trees in the BOREAS NSA from 23-Jul-1996 until 14-Aug-1996. These measurements can be used to test models of photosynthesis, stomatal conductance, and leaf respiration, such as SiB2 (Sellers et al., 1996) or the leaf model (Collatz et al., 1991), and programs can be obtained from the investigators.

ATom: L2 In Situ Measurements of Aerosol Microphysical Properties (AMP)

C.A. BROCK, A. KUPC, C.J. WILLIAMSON, K. FROYD, F. ERDESZ, D.M. MURPHY, G.P. SCHILL, D.W. GESLER, R.J. MCLAUGHLIN, M. RICHARDSON, N.L. WAGNER & J.C. WILSON
This dataset provides the number, surface, and volume concentrations and size distributions of dry aerosol particles measured by the Aerosol Microphysical Properties (AMP) instrument package during airborne campaigns conducted by NASA's Atmospheric Tomography (ATom) mission. Five instruments--two nucleation-mode aerosol size spectrometer (NMASS), two ultra-high sensitivity aerosol spectrometers (UHSAS), and a laser aerosol spectrometer (LAS)--comprise the AMP package. The AMP payload provides size distributions with up to one-second time resolution for dry aerosol particles between 0.003...

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