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  • 1
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    BOREAS RSS-2 Extracted Reflectance Factors Derived from ASAS Imagery (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOREAS RSS-2 team derived atmospherically corrected bidirectional reflectance factor means from multispectral, multiangle ASAS imagery for small homogeneous areas near several BOREAS sites. The ASAS imagery was acquired from the C-130 aircraft platform in 1994 and 1996. The data are stored in tabular ASCII files.
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL44 , Rept-2000-03136-0/VOL44 , NAS 1.15:209891/VOL44
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  • 2
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    BOREAS Level-3a Landsat TM Imagery: Scaled At-sensor Radiance in BSQ Format (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: For BOREAS, the level-3a Landsat TM data, along with the other remotely sensed images, were collected in order to provide spatially extensive information over the primary study areas. This information includes radiant energy, detailed land cover, and biophysical parameter maps such as FPAR and LAI. Although very similar in content to the level-3s Landsat TM products, the level-3a images were created to provide users with a more usable BSQ format and to provide information that permitted direct determination of per-pixel latitude and longitude coordinates. Geographically, the level-3a images cover the BOREAS NSA and SSA. Temporally, the images cover the period of 22-Jun-1984 to 30-Jul-1996. The images are available in binary, image-format files. With permission from CCRS and RSI, several of the full-resolution images are included on the BOREAS CD-ROM series. Due to copyright issues, the images not included on the CD-ROM may not be publicly available. See Sections 15 and 16 for information about how to acquire the data. Information about the images not on the CD-ROMs is provided in an inventory listing on the CD-ROMs.
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL96 , Rept-2000-03136-0/VOL96 , NAS 1.15:209891/VOL96
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  • 3
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    BOREAS Level-4b AVHRR-LAC Ten-Day Composite Images: At-sensor Radiance (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOReal Ecosystem-Atmosphere Study (BOREAS) Staff Science Satellite 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. Manitoba Remote Sensing Center (MRSC) and BOREAS Information System (BORIS) personnel acquired, processed, and archived data from the Advanced Very High Resolution Radiometer (AVHRR) instruments on the National Oceanic and Atmospheric Administration (NOAA-11) and -14 satellites. The AVHRR data were acquired by CCRS and were provided to BORIS for use by BOREAS researchers. These AVHRR level-4b data are gridded, 10-day composites of at-sensor radiance values produced from sets of single-day images. Temporally, the 10- day compositing periods begin 11-Apr-1994 and end 10-Sep-1994. Spatially, the data cover the entire BOREAS region. The data are stored in binary image format files.
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL102 , Rept-2000-03136-0/VOL102 , NAS 1.15:209891/VOL102
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  • 4
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    BOREAS RSS-3 Atmospheric Measurements from a Helicopter-Mounted Sunphotometer (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOREAS RSS-3 team collected and processed helicopter-based measurements of atmospheric conditions to estimates of aerosol optical thickness and atmospheric water vapor. The automatic sun-tracking photometer for helicopters was deployed during all three 1994 IFCs at numerous tower and auxiliary sites in both the NSA and the SSA. Six spectral channels (440, 540, 613, 670, 870, and 1030 nm) were chosen to span the visible and NIR wavelengths and to avoid gaseous absorption. One additional channel, 940 nm, was selected to measure the water column abundance above the helicopter platform. The data are stored in tabular ASCII files.
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL45 , Rept-2000-03136-0/VOL45 , NAS 1.15:209891/VOL45
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  • 5
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    BOREAS RSS-11 Ground Network of Sunphotometer Measurements (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOREAS RSS-11 team operated a network of five automated (Cimel) and two hand-held (Miami) solar radiometers from 1994 to 1996 during the BOREAS field campaigns. The data provide aerosol optical depth measurements, size distribution, phase function, and column water vapor amounts over points in northern Saskatchewan and Manitoba, Canada. The data are useful for the correction of remotely sensed aircraft and satellite images. The data are provided in tabular ASCII files.
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL58 , Rept-2000-03136-0/VOL58 , NAS 1.15:209891/VOL58
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  • 6
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    BOREAS RSS-18 Level-1B AVIRIS Imagery: At-Sensor Radiance in BIL Format (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: These data were collected and processed by the BOREAS RSS-18 team at NASA JPL. Data were acquired for BOREAS with NASA's AVIRIS. This optical sensor measures images that consist of spectra from 400 to 2500 nm at 10-nm sampling. These spectra are acquired as images with 20-meter spatial resolution, 11-km swath width and up to 800-km length. The measurements are spectrally, radiometrically, and geometrically calibrated. Spatially, the data are focused on the BOREAS NSA and SSA near Thompson, Manitoba, and Candle Lake, Saskatchewan, Canada, respectively. AVIRIS data were collected in 1994 during the Thaw campaign at the NSA and SSA, at the SSA in IFC-1, and at the NSA and SSA in both IFC-2 and IFC-3. In 1996, AVIRIS was deployed in the winter and summer campaigns in the SSA only. The data files are available on a CD-ROM (see document number 20010000884) or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL74 , Rept-2000-03136-0/VOL74 , NAS 1.15:209891/VOL74
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  • 7
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    BOREAS RSS-19 1996 CASI At-Sensor Radiance and Reflectance Images (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOREAS RSS-19 team collected CASI images from the Chieftain Navaho aircraft in order to observe the seasonal change in the radiometric reflectance properties of the boreal forest landscape. CASI was deployed as a site-specific optical sensor as part of BOREAS. The overall objective of the CASI deployment was to observe the seasonal change in the radiometric reflectance properties of the boreal forest landscape. In 1996, image data were collected with CASI on 15 days during a field campaign between 18-July and 01 -August, primarily at flux tower sites located at study sites near Thompson, Manitoba, and Prince Albert, Saskatchewan. A variety of CASI data collection strategies were used to meet the following scientific objectives: 1) canopy bidirectional reflectance, 2) canopy biochemistry, 3) spatial variability, and 4) estimates of up and downwelling PAR spectral albedo, as well as changes along transects across lakes at the southern site and transects between the NSA and SSA. The images are stored as binary image files. The data files are available on a CD-ROM (see document number 20010000884) or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL76 , Rept-2000-03136-0/VOL76 , NAS 1.15:209891/VOL76
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  • 8
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    BOREAS RSS-20 POLDER C-130 Measurements of Surface BRDF (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: This Boreal Ecosystem-Atmosphere Study (BOREAS) Remote Sensing Science (RSS)-20 data set contains measurements of surface bidirectional reflectance distribution function (BRDF) made by the polarization and Directionality of Earth reflectances (POLDER) instrument over several surface types (pine, spruce, fen) of the BOREAS southern study area (SSA) during the 1994 intensive field campaigns (IFCs). Single-point BRDF values were acquired either from the NASA Ames Research Center (ARC) C-130 aircraft or from a NASA Wallops Flight Facility (WFF) helicopter. A related data set collected from the helicopter platform is available as is POLDER imagery acquired from the C-130. The data are stored in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884) or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL78 , Rept-2000-03136-0/VOL78 , NAS 1.15:209891/VOL78
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  • 9
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    BOREAS RSS-20 POLDER Helicopter-Mounted Measurements of Surface BRDF (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOREAS HYD-9 team collected data on precipitation and strearnflow over portions of the NSA and SSA. This data set contains Cartesian maps of rain accumulation for I -hour and daily periods during the summer of 1994 over the SSA only (not the full view of the radar). A parallel set of 1-hour maps for the whole radar view has been prepared and is available upon request from the HYD-09 personnel. An incidental benefit of the areal selection was the elimination of some of the less accurate data,because for various reasons the radar rain estimates degrade considerably outside a range of about 100 km. The data are available in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884) or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL79 , Rept-2000-03136-0/VOL79 , NAS 1.15:209891/VOL79
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  • 10
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    BOREAS RSS-19 1994 Seasonal Understory Reflectance Data (2000)
    In:  CASI
    Details
    Publication Date: 2019-07-10
    Description: The BOREAS RSS-19 team collected airborne remotely sensed images and ground reflectance data for characterizing the radiometric properties of the boreal forest landscape. One objective of BOREAS is to further the understanding of the spectral bidirectional reflectance of typical boreal ecosystem stands in the visible/near-infrared regime. An essential input for any canopy BRDF model is an accurate estimate of the average understory reflectance, both for sunlit and shaded conditions. These variables can be expected to vary seasonally because of species-dependent differences in the phenological cycle of foliar display. In response to these requirements, the average understory reflectance for the flux tower sites of both the NSA (Thompson, Manitoba) and the SSA (Candle Lake, Saskatchewan) was observed throughout the year during five field campaigns. This was done by measuring the nadir reflectance (400 to 850 nm) of sunlit and shaded understory (vegetation and snow cover) along a surveyed LAI transect line (Chen, RSS-07) at each site near solar noon and documenting an average site reflectance. Comparisons between sites reveal differences in the green and infrared regions of the spectra, because of the differing species in the understory for each site. Temporal (seasonal) variation for each site was also observed (06-Feb-1994 to 16-Sep-1994), indicating the changing flora mixtures and changing spectral signatures as the understory matures during the growing season. The data are stored in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884) or from the Oak Ridge National Laboratory (ORNL) Distributed Active Archive Center (DAAC).
    Keywords: Earth Resources and Remote Sensing
    Type: NASA/TM-2000-209891/VOL77 , Rept-2000-03136-0/VOL77 , NAS 1.15:209891/VOL77
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