11. THE ROLE OF REMOTE SENSING IN LAND SURFACE
EXPERIMENTS WITHIN BAHC AND ISLSCP
93
different, yet complementary perspective. Several further related program
elements are briefly summarized in Section 5, which is followed by a brief
review of long-term global aspects (Section 6). An example of land-surface
experiments and related data needs and potential is given in Section 7.
Remote sensing requirements are summarized in Section 8.
2.
IGBP-BAHC (BIOSPHERIC ASPECTS OF THE
HYDROLOGICAL CYCLE)
The objective of BAHC is centered on the question “How do changes in
biospheric processes interact with global and regional climates,
hydrological processes and water resources, when driven by changes in
atmospheric composition and land cover?”
The basic tasks defined for BAHC are
to determine the biospheric controls on the hydrological cycle through
experiments and modeling of energy and water fluxes in the soilvegetation-atmosphere system at all spatial and temporal scales;
to develop appropriate data sets that describe the interactions between
the terrestrial biosphere and the physical Earth system, and that can be
used for testing and validation of model simulations of these
interactions.
Currently a new program structure is being implemented consisting of the
following key themes
1.
2.
3.
4.
5.
6.
Investigate energy, water and carbon fluxes at the patch scale
(FLUXNET)
Evaluate the role of below-ground processes
Parameterizations of land-atmosphere interactions
Land use-climate interactions at the regional scale
Global terrestrial vegetation-climate interactions
Influence of climate change and human activities on mobilization and
transport of matter through riverine systems
Mountain hydrology and ecology
Contribute to development and production of global data sets
7.
8.
and crosscutting issues:
A. Integrated terrestrial system experiments–Design, priorities, plans, target
areas
B. Analyze impacts of environmental change and climate variability on
water and land systems
Although remote sensing data are needed and being used in all of these,
there is particular emphasis on two components.
EXPERIMENTS WITHIN BAHC AND ISLSCP
93
different, yet complementary perspective. Several further related program
elements are briefly summarized in Section 5, which is followed by a brief
review of long-term global aspects (Section 6). An example of land-surface
experiments and related data needs and potential is given in Section 7.
Remote sensing requirements are summarized in Section 8.
2.
IGBP-BAHC (BIOSPHERIC ASPECTS OF THE
HYDROLOGICAL CYCLE)
The objective of BAHC is centered on the question “How do changes in
biospheric processes interact with global and regional climates,
hydrological processes and water resources, when driven by changes in
atmospheric composition and land cover?”
The basic tasks defined for BAHC are
to determine the biospheric controls on the hydrological cycle through
experiments and modeling of energy and water fluxes in the soilvegetation-atmosphere system at all spatial and temporal scales;
to develop appropriate data sets that describe the interactions between
the terrestrial biosphere and the physical Earth system, and that can be
used for testing and validation of model simulations of these
interactions.
Currently a new program structure is being implemented consisting of the
following key themes
1.
2.
3.
4.
5.
6.
Investigate energy, water and carbon fluxes at the patch scale
(FLUXNET)
Evaluate the role of below-ground processes
Parameterizations of land-atmosphere interactions
Land use-climate interactions at the regional scale
Global terrestrial vegetation-climate interactions
Influence of climate change and human activities on mobilization and
transport of matter through riverine systems
Mountain hydrology and ecology
Contribute to development and production of global data sets
7.
8.
and crosscutting issues:
A. Integrated terrestrial system experiments–Design, priorities, plans, target
areas
B. Analyze impacts of environmental change and climate variability on
water and land systems
Although remote sensing data are needed and being used in all of these,
there is particular emphasis on two components.