Directional reflectance factor distributions for cover types of Northern Africa

D.S. Kimes, W.W. Newcomb, C.J. Tucker, I.S. Zonneveld, W. van Wijngaarden, J. de Leeuw, G.F. Epema

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Abstract

Directional reflectance factors that spanned the entire exitance hemisphere were collected on the ground throughout the morning period for common cover types in Tunisia, Africa. NOAA 7/8 AVHRR bands 1 (0.58–0.68 μm) and 2 (0.73–1.1 μm) were used in data collection. The cover types reported were a plowed field, annual grassland, steppe grassland, hard wheat, salt plain, and irrigated wheat. Several of these cover types had geometric structures that are extreme as compared to those reported in the literature. Comparisons were made between the dynamics of the observed reflectance distributions and those reported in the literature. It was found that the dynamics of the measured data could be explained by a combination of soil and vegetation scattering components. The data and analysis further validated physical principles that cause the reflectance distribution dynamics as proposed by field and simulation studies in the literature. Finally, the normalized difference transformation [(Band 2 − Band 1)/(Band 1 + Band 2)], which is useful in monitoring vegetation cover, generally decreased the variation in signal with changing view angle. However, several exceptions were noted.
Original languageEnglish
Pages (from-to)1-19
JournalRemote sensing of environment
Volume18
Issue number1
DOIs
Publication statusPublished - 1985

Fingerprint

Northern Africa
reflectance
wheat
grassland
annual grasslands
Advanced very high resolution radiometers (AVHRR)
Tunisia
steppes
vegetation cover
steppe
AVHRR
grasslands
scattering
Scattering
Salts
salt
salts
Soils
vegetation
Monitoring

Keywords

  • NRS
  • ADLIB-ART-1767

Cite this

Kimes, D. S., Newcomb, W. W., Tucker, C. J., Zonneveld, I. S., van Wijngaarden, W., de Leeuw, J., & Epema, G. F. (1985). Directional reflectance factor distributions for cover types of Northern Africa. Remote sensing of environment, 18(1), 1-19. https://doi.org/10.1016/0034-4257(85)90034-3
Kimes, D.S. ; Newcomb, W.W. ; Tucker, C.J. ; Zonneveld, I.S. ; van Wijngaarden, W. ; de Leeuw, J. ; Epema, G.F. / Directional reflectance factor distributions for cover types of Northern Africa. In: Remote sensing of environment. 1985 ; Vol. 18, No. 1. pp. 1-19.
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abstract = "Directional reflectance factors that spanned the entire exitance hemisphere were collected on the ground throughout the morning period for common cover types in Tunisia, Africa. NOAA 7/8 AVHRR bands 1 (0.58–0.68 μm) and 2 (0.73–1.1 μm) were used in data collection. The cover types reported were a plowed field, annual grassland, steppe grassland, hard wheat, salt plain, and irrigated wheat. Several of these cover types had geometric structures that are extreme as compared to those reported in the literature. Comparisons were made between the dynamics of the observed reflectance distributions and those reported in the literature. It was found that the dynamics of the measured data could be explained by a combination of soil and vegetation scattering components. The data and analysis further validated physical principles that cause the reflectance distribution dynamics as proposed by field and simulation studies in the literature. Finally, the normalized difference transformation [(Band 2 − Band 1)/(Band 1 + Band 2)], which is useful in monitoring vegetation cover, generally decreased the variation in signal with changing view angle. However, several exceptions were noted.",
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Kimes, DS, Newcomb, WW, Tucker, CJ, Zonneveld, IS, van Wijngaarden, W, de Leeuw, J & Epema, GF 1985, 'Directional reflectance factor distributions for cover types of Northern Africa' Remote sensing of environment, vol. 18, no. 1, pp. 1-19. https://doi.org/10.1016/0034-4257(85)90034-3

Directional reflectance factor distributions for cover types of Northern Africa. / Kimes, D.S.; Newcomb, W.W.; Tucker, C.J.; Zonneveld, I.S.; van Wijngaarden, W.; de Leeuw, J.; Epema, G.F.

In: Remote sensing of environment, Vol. 18, No. 1, 1985, p. 1-19.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Directional reflectance factor distributions for cover types of Northern Africa

AU - Kimes, D.S.

AU - Newcomb, W.W.

AU - Tucker, C.J.

AU - Zonneveld, I.S.

AU - van Wijngaarden, W.

AU - de Leeuw, J.

AU - Epema, G.F.

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AB - Directional reflectance factors that spanned the entire exitance hemisphere were collected on the ground throughout the morning period for common cover types in Tunisia, Africa. NOAA 7/8 AVHRR bands 1 (0.58–0.68 μm) and 2 (0.73–1.1 μm) were used in data collection. The cover types reported were a plowed field, annual grassland, steppe grassland, hard wheat, salt plain, and irrigated wheat. Several of these cover types had geometric structures that are extreme as compared to those reported in the literature. Comparisons were made between the dynamics of the observed reflectance distributions and those reported in the literature. It was found that the dynamics of the measured data could be explained by a combination of soil and vegetation scattering components. The data and analysis further validated physical principles that cause the reflectance distribution dynamics as proposed by field and simulation studies in the literature. Finally, the normalized difference transformation [(Band 2 − Band 1)/(Band 1 + Band 2)], which is useful in monitoring vegetation cover, generally decreased the variation in signal with changing view angle. However, several exceptions were noted.

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Kimes DS, Newcomb WW, Tucker CJ, Zonneveld IS, van Wijngaarden W, de Leeuw J et al. Directional reflectance factor distributions for cover types of Northern Africa. Remote sensing of environment. 1985;18(1):1-19. https://doi.org/10.1016/0034-4257(85)90034-3