508
Table 19.2 Science and Applications Traceability Matrix (SATM) for the SBG plant functional trait designated observable. This matrix relates the science
question and objective to its targeted observable and then defines the objectives for the instrument (e.g., spectral resolution) and mission (e.g., revisit time)
needed to achieve the targeted observable
Question
Earth science objective
Priority
Geophysical
observable
Measurement
parameters
Method
Data
source
Targeted
observable
What are the structure,
function, and biodiversity
of Earth’s ecosystems,
and how and why are
they changing in time and
space?
Quantify the distribution
of the functional traits,
functional types, and
composition of terrestrial
and shallow aquatic
vegetation … spatially
and over time
Very important
DESIGNATED
program
element
Chemical and
morphological
properties of
vegetation
Spectral radiance
(10 nm)
380–2500 nm.
Pixel size 30–45 m
Revisit <15 days
Signal to noise
>400:1
High-fidelity
imaging
spectrometer,
150–200 km
swath from low
Earth orbit
SBG
Functional traits
of terrestrial
vegetation
D. Schimel et al.