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A LEO Hyperspectral Mission Implementation for Global Carbon Cycle ObservationsFor both terrestrial and ocean carbon cycle science objectives, high resolution (less than l0 nm) imaging spectrometers capable of acquiring multiple regional to global scale observations per day should enable the development of new remote sensing measurements for important but as yet unobservable variables, with the overall goal of linking both terrestrial and ocean carbon cycle processes to climate variability. For terrestrial research, accurate estimates of carbon, water and energy (CWE) exchange between the terrestrial biosphere and atmosphere a needed to id- the geographical locations and temporal dynamics of carbon sources/sinks and to improve regional climate models and climate change assessments. It is an enormous challenge to estimate CWE exchange from the infrequent temporal coverage and sparse spectral information provided by most single polar-orbiting, earth-looking satellite. The available satellite observations lack a sufficient number of well-placed narrow bands from which to derive spectral indices that capture vegetation responses to stress conditions associated with down-regulation of photosynthesis. Physiological status can best be assessed with spectral indices based on continuous, narrow bands in the visible/near infrared spectra, as can seasonal and annual terrestrial productivity. For coastal and ocean constituents, narrow-band observations in the ultraviolet and visible are essential to investigate the variability, dynamics and biogeochemical cycles of the world's coastal and open ocean regions, which will in turn help in measuring ocean productivity and predicting the variability of ocean carbon uptake and its role in climate change.
Document ID
20040070760
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Gervin, Janette C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Esper, Jaime
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
McClain, Charles R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Hall, Forrest G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Middleton, Elizabeth M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Gregg, Watson W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mannino, Antonio
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Knox, Robert G.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Huemmrich, K. Fred
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: IGARSS 2004: 2004 IEEE international Geoscience and Remote Sensing Symposium
Location: Anchorage, AK
Country: United States
Start Date: September 20, 2004
End Date: September 24, 2004
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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