摘要：The Famine Early Warning System Network (FEWS NET) provides monitoring and
early warning support to decision makers responsible for responding to famine
and food insecurity. FEWS NET transforms satellite remote sensing data into
rainfall and vegetation information that can be used by these decision makers. The
National Aeronautics and Space Administration has recently funded activities
to enhance remote sensing inputs to FEWS NET. To elicit Earth observation
requirements, a professional review questionnaire was disseminated to FEWS NET
expert end-users; it focused upon operational requirements to determine additional
useful remote sensing data and, subsequently, to assess whether such data would
be beneficial as FEWS NET biophysical supplementary inputs. The review was
completed by over 40 experts from around the world. Reviewers were asked to
evaluate the relative importance of environmental variables and spatio-temporal
requirements for Earth science data products, in particular for rainfall and vegetation
products. The results showed that spatio-temporal resolution requirements are
complex and need to vary according to place, time, and hazard; that high resolution
remote sensing products continue to be in demand; and that rainfall and vegetation
products are valued as data that provide actionable food security information.
