Application of advanced very high resolution radiometer vegetation index to study atmosphere-biosphere exchange of CO/sub 2/

Journal Article · Fri Mar 20 04:00:00 EST 1987 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JD092iD03p02999· OSTI ID:6378171

Fung, I Y; Tucker, C J; Prentice, K C

Normalized difference vegetation indices derived from radiances measured by the Advanced Very High Resolution Radiometer aboard the NOAA 7 polar-orbiting satellite were used to prescribe the phasing of terrestrial photosynthesis. The satellite data were combined with field data on soil respiration and a global map of net primary productivity to obtain the seasonal exchange of CO/sub 2/ between the atmosphere and the terrestrial biosphere. The monthly fluxes of CO/sub 2/ thus obtained were employed as source/sink functions in a global three-dimensional atmospheric tracer transport model to simulate the annual oscillations of CO/sub 2/ in the atmosphere. Reasonable agreement was found between the simulated and observed annual cycles of atmospheric CO/sub 2/ at the locations of the remote monitoring stations. The results demonstrate that satellite data of high spatial and temporal resolution can be used to provide quantitative information about seasonal and longer-term variations of photosynthetic activity on a global scale. Atmospheric CO/sub 2/ observations and a three-dimensional atmospheric model have been used to validate the translation of the nondimensional satellite data into dimensional carbon fluxes. Direct calibration will require extensive ground truth and field measurements at ecosystem scales.

• Research Organization: NASA Goddard Space Flight Center Institute for Space Studies, NY
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6378171
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 92:D3; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR-BIOSPHERE INTERACTIONS
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON CYCLE
CARBON DIOXIDE
CARBON OXIDES
CARBON SINKS
CHALCOGENIDES
CHEMICAL REACTIONS
ECOLOGICAL CONCENTRATION
ENVIRONMENTAL TRANSPORT
MASS TRANSFER
MATHEMATICAL MODELS
MONTHLY VARIATIONS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
REMOTE SENSING
RESOLUTION
SATELLITES
SINKS
SOILS
SYNTHESIS
VARIATIONS