--- cited_by: [] datasets: - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'ABSTRACT: The Landsat Ecosystem Disturbance Adaptive Processing System (LEDAPS) is a NASA project to map disturbance, regrowth, and permanent forest conversion across the continent (Masek et al., 2006). The LEDAPS processes Landsat imagery to surface reflectance, using atmospheric correction routines developed for the Terra MODIS instrument (Vermote et al., 1997). The original LEDAPS software was developed at NASA GSFC by Eric Vermote, Nazmi Saleous, Jonathan Kutler, and Robert Wolfe with support from the NASA Terrestrial Ecology program (PI: Jeff Masek). This version was adapted by Dr. Feng Gao. It is a stand-alone version of Landsat 1T calibration, TOA reflectance, cloud masking, and atmospheric correction preprocessing chain. This software is designed to work with the standard web-enabled EROS L1T product for Landsat-5 and Landsat-7. Version 2, the latest version, was updated to support both old and new metadata formats for Landsat L1T products. This change was necessitated when USGS EROS changed their metadata format in August 2012. The source code, installation and run instructions, and required ancillary data files are provided. Ancillary data for 1980 to 2010 are NCEP (National Centers for Environmental Prediction) water vapor data and TOMS (Total Ozone Mapping Spectrometer) ozone data. The 2011 and 2012 ancillary data additions are also provided. To update your existing ancillary data, you only need to download recent updates.The ancillary data are updated and maintained on a monthly basis by the Hydrology and Remote Sensing Laboratory, USDA-ARS by Feng Gao [ftp://hrsl.arsusda.gov/pub/fgao/Ledaps/ ].' description_attribution: http://daac.ornl.gov//MODELS/guides/LEDAPS_V2.html display_name: 'LEDAPS Calibration, Reflectance, Atmospheric Correction Preprocessing Code, Version 2' doi: 10.3334/ORNLDAAC/1146 end_time: 2012-12-31T00:00:00 identifier: nasa-ornldaac-1146 lat_max: 90 lat_min: -90 lon_max: 180 lon_min: -180 name: 'LEDAPS Calibration, Reflectance, Atmospheric Correction Preprocessing Code, Version 2' native_id: LEDAPS_PREPROCESSING_TOOL_V2 processing_level: ~ publication_year: ~ release_dt: 2013-01-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1980-01-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-ornldaac-1146 url: http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1146 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'ABSTRACT: 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 deviation, and coefficient of variation for 1979-1989. The PAR estimates were derived from the global gridded ultraviolet reflectivity data product (average of 360, 380 nm) from the Nimbus-7 Total Ozone Mapping Spectrometer (TOMS). Image mask data are provided for identifying the boreal forest zone, and ocean/land and snow/ice covered areas. The data are available as binary image format data files. Companion files include example thumbnail images that may be viewed and the image data files downloaded using a convenient viewer utility.' description_attribution: http://daac.ornl.gov//BOREAS/guides/RSS10_PAR_TOMS.html display_name: BOREAS RSS-10 TOMS Circumpolar One-Degree PAR Images doi: 10.3334/ORNLDAAC/443 end_time: 1989-09-30T00:00:00 identifier: nasa-ornldaac-443 lat_max: 65.5 lat_min: 41.5 lon_max: 180 lon_min: -180 name: BOREAS RSS-10 TOMS Circumpolar One-Degree PAR Images native_id: BOREAS_RSS10TOM processing_level: ~ publication_year: ~ release_dt: 1999-01-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1979-05-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-ornldaac-443 url: http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=443 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'ABSTRACT: This data set contains atmospheric chemistry and meteorological data from the NASA Transport and Atmospheric Chemistry near the Equator-Atlantic (TRACE-A) field study. The NASA TRACE-A study took place in August 1992 to determine the cause and source of high concentrations of ozone that accumulate over the Atlantic ocean between southern Africa and South America during the months of August through October. The processed, quality controlled and integrated data in the documented Pre-LBA Data sets were originally published as a set of three CD-ROMs (Marengo and Victoria, 1998) but have now been archived individually.' description_attribution: http://daac.ornl.gov//LBA/guides/Pre_LBA_TRACE-A.html display_name: Pre-LBA TRACE-A Data doi: 10.3334/ORNLDAAC/920 end_time: 1992-10-26T00:00:00 identifier: nasa-ornldaac-920 lat_max: -4 lat_min: -40 lon_max: 40 lon_min: -125 name: Pre-LBA TRACE-A Data native_id: LBA_TRACE-A processing_level: ~ publication_year: ~ release_dt: 2009-01-01T00:00:00 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-08-18T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-ornldaac-920 url: http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=920 variables: ~ version: ~ vertical_extent: ~ display_name: nimbus-7/total-ozone-mapping-spectrometer href: http://52.38.26.42:8080/platform/nimbus-7/instrument/total-ozone-mapping-spectrometer.yaml instrument_identifier: total-ozone-mapping-spectrometer location: ~ parents: [] platform_identifier: nimbus-7 type: instrument_instance uri: /platform/nimbus-7/instrument/total-ozone-mapping-spectrometer