摘要：Representing the dynamic character of Vegetation in
global climate modelling is a challenging task. We
present a new Instrumentation approach in the form of
APEX, an airborne imaging spectrometer to address
the key variables and processes relevant for monitoring
the biogeophysical and biochemical parameters
at the local, regional and national scale. We are able
to demonstrate that a large number of relevant processes and variables have been monitored successfully
using imaging spectrometers. In particular, the accuracy of the variable retrieval using this observational
approach has much improved and the quantification
of the interaction of the radiation field with Vegetation has been made possible. The airborne instrument
APEX will be made available to the scientific Community in early 2005, whereas it's space successor SPECTRA is scheduled for launch in 2008. The inclusion
of the spectro-directional and thermal components
will contribute toward minimizing retrieval uncertainties. Until these instruments are introduced into the
market, there is enough time to develop the necessary
products and to inform the scientific Community about
the new possibilities.
