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SAFARI 2000 BRDF Measurements at Sua Pan and Skukuza, Dry Season 2000

Data Set Overview

Data setSAFARI 2000 BRDF Measurements at Sua Pan and Skukuza, Dry Season 2000
DOI10.3334/ORNLDAAC/779
Release date2005-02-25
ProjectSAFARI 2000 (S2K)
Time Period2000-08-25

Description

The Jet Propulsion Laboratory's (JPL) Portable Apparatus for Rapid Acquisition of Bidirectional Observation of the Land and Atmosphere (PARABOLA), version III, instrument collected radiance data covering both the upwelling and downwelling hemispheres at the Sua Pan salt playa in the Magkadigkadi region of Botswana and at the Skukuza tower site in the Kruger National Park, South Africa between August 25 and October 2, 2000 during in the SAFARI 2000 Dry Season Aircraft Campaign. PARABOLA III is a sphere-scanning radiometer that provides multi-angle measurements of sky and ground radiances on a spherical grid of 5 degrees in the zenith-to-nadir and azimuthal planes in eight spectral channels (444, 551, 581, 650, 860, 944, 1028, and 1650 nm). The experiment was designed to collect data necessary for multi-angle top-of-atmosphere radiance predictions for a vicarious calibration of the Multi-angle Imaging SpectroRadiometer (MISR) instrument aboard the Terra satellite. Four of the PARABOLA channels (444, 551, 650, and 860 nm) are similar to those of the MISR sensor. Measurements were made on cloud-free days of Terra satellite overpasses.Each data file contains radiance counts (ASCII integer values) for 8 bands for each 3-minute data collection. Zenith and azimuth angles are implied by radiance count positions in file. Additional files contain average dark current readings, empirically determined by covering the detectors. The data can be processed to radiance using a series of second order polynomial fit coefficients, provided in the documentation file, and dark current offset. Site-specific auxiliary information is also provided, for each date of PARABOLA data collection.

Documentation

Data set reference document

Citation

Helmlinger, M., W. Buermann, and F. Eckardt. 2005. SAFARI 2000 BRDF Measurements at Sua Pan and Skukuza, Dry Season 2000. ORNL DAAC, Oak Ridge, Tennessee, USA. http://dx.doi.org/10.3334/ORNLDAAC/779
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Project

SAFARI 2000 (S2K): The SAFARI 2000 project was an international science initiative to study the linkages between land and atmosphere processes in the southern African region. In addition, SAFARI 2000 examined the relationship of biogenic, pyrogenic, and anthropogenic emissions and the consequences of their deposition to the functioning of the biogeophysical and biogeochemical systems of southern Africa. This initiative, which was conducted in 1999-2001, was built around a number of ongoing, already-funded activities by NASA, the international community, and African nations in the southern African region.

Project data set list for SAFARI 2000 (S2K).

Companion Files

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  • sua_pan_skukuza_brdf_readme.pdf

Data Files

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Data File (Granule)File SizeDates
parabola_20000825.zip 5.7 MB 2000-08-25
parabola_20000827.zip 4.4 MB 2000-08-27
parabola_20000830.zip 5.5 MB 2000-08-30
parabola_20000901.zip 5.2 MB 2000-09-01
parabola_20000903.zip 3.9 MB 2000-09-03
parabola_20000904.zip 4.3 MB 2000-09-04
parabola_20000917.zip 3.1 MB 2000-09-17
parabola_20000923.zip 5.9 MB 2000-09-23
parabola_20000928.zip 5.5 MB 2000-09-28
parabola_20000930.zip 5.6 MB 2000-09-30
parabola_20001002.zip 5.7 MB 2000-10-02
parabola_dark_current.zip 1.6 MB 2000-08-25 - 2000-10-02
parabola_aux_info.csv 542 B 2000-08-25 - 2000-10-02

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Files related to this data set have been downloaded on 125 occasions since 2007-12-13, totaling 739 files.