ABSTRACT
The strong angul
the period of coi
vegetation on re
emphasis given t
reflectances (cor
expresses bidirec
related to the opt
time profiles of
effects, this reflec
1 - INTRODUC1
Monitoring of ten
importance in sev
necessary for an
since vegetation c
air flow momenti
agricultural surve;
since primary prot
and trace gases. A
either natural or c
ecosystem dynami
Although
straightforward w;
visible and near ir
activity of the vej
vegetation cover,
reflectance in the
resolution compati
these reflectance n
1 to several thoust
satisfy the needs of
The only ;
High Resolution R;
AVHRR instrumen
Tucker et al., 1985
et al„ 1987). The v
Earth, which leads
directly comparable
1984; Gutman, 19‘
composition, and
corrections. Interar
Atmospheric correc
