Summary:

The main goal of this study was to analyze the possibility of estimating combustion completeness based on fire-induced spectral reflectance changes of surface features by the development of relationships between combustion completeness and pre-fire to post-fire spectral reflectance changes, in the green, red, and near-infrared spectral domains (equivalent to Landsat ETM+ channels 2, 3, and 4). Experimental burns were carried out in the Western Province of Zambia in dambos (hydromorphic grasslands) and miombo woodlands during the SAFARI 2000 Third Intensive Field Campaign in August and September of 2000.

This data set contains three sets of measurements:

• Reflectance measurements from a FieldSpec UV/VNIR Spectroradiometer along burned and unburned woodland transects, in pre- and post-fire woodland and dambo plots, and for pure spectra of soil, vegetation, and charcoal;
• Reflectance and transmittance measurements of both upper and lower leaf faces for three tree species (Julbernardia globiflora, Isoberlinia angolensis, and Brachystegia spiciformis) using an External Integrating Sphere connected to the FieldSpec Spectroradiometer; and
• Calculations that integrate pre- and post-fire biomass measurements with pre- and post-fire reflectance in ETM+ channel 2, 3, and 4 wavelengths to estimate combustion completeness.

The data are stored as .csv format files. Additional information about the data format, study area, instrumentation, and results is found in the companion file: http://daac.ornl.gov/daacdata/safari2k/remote_sensing/pre_post_fire_refl/comp/pre_post_fire_refl_readme.pdf.

Data Citation:

Cite this data set as follows:

Silva, J. M. N., J. M. C. Pereira, and A. C. L. Sa. 2004. SAFARI 2000 Pre- and Post-fire Reflectance near Kaoma, Zambia, Dry Season 2000. Data set. Available on-line [http://daac.ornl.gov/] from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. doi:10.3334/ORNLDAAC/757.

References:

Sa, A. C. L., J. M. C. Pereira, and J. M. N. Silva. 2003. Estimation of combustion completeness based on fire-induced spectral reflectance changes in a dambo grassland in the Western Province, Zambia. International Journal of Remote Sensing, SAFARI 2000 Special Issue (in press).

Data Format:

This data set contains three sets of measurements: reflectance measurements from the FieldSpec Radiometer; reflectance and transmittance measurements from the Integrating Sphere; and measurements that integrate biomass data with spectral data. The data files from each instrument are listed in the table below:

The data are stored in .csv format. In the FieldSpec files, the first column in each file is wavelength, in microns, and the rest of the columns are fractional reflectance (multiply by 100 to get percent). In the Integrating Sphere Files, the first column in each file is wavelength, in nanometers, and the rest of the columns are either percent reflectance or transmittance. The file comparing biomass, spectra, and combustion completeness provides: pre- and post-fire biomass weight (grams); pre- and post-fire reflectance in ETM+ channel 2, 3, and 4 wavelengths (percent); and combustion completeness (percent).

Additional information about the data format, study area, instrumentation, and results is found in the companion file: http://daac.ornl.gov/daacdata/safari2k/remote_sensing/pre_post_fire_refl/comp/pre_post_fire_refl_readme.pdf.

Document Information:

2004/8/9

Document Review Date:

2004/8/9

Document Curator:

webmaster@www.daac.ornl.gov

Document URL: