NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Modeling Atmospheric CO2 Processes to Constrain the Missing SinkWe report on a NASA supported modeling effort to reduce uncertainty in carbon cycle processes that create the so-called missing sink of atmospheric CO2. Our overall objective is to improve characterization of CO2 source/sink processes globally with improved formulations for atmospheric transport, terrestrial uptake and release, biomass and fossil fuel burning, and observational data analysis. The motivation for this study follows from the perspective that progress in determining CO2 sources and sinks beyond the current state of the art will rely on utilization of more extensive and intensive CO2 and related observations including those from satellite remote sensing. The major components of this effort are: 1) Continued development of the chemistry and transport model using analyzed meteorological fields from the Goddard Global Modeling and Assimilation Office, with comparison to real time data in both forward and inverse modes; 2) An advanced biosphere model, constrained by remote sensing data, coupled to the global transport model to produce distributions of CO2 fluxes and concentrations that are consistent with actual meteorological variability; 3) Improved remote sensing estimates for biomass burning emission fluxes to better characterize interannual variability in the atmospheric CO2 budget and to better constrain the land use change source; 4) Evaluating the impact of temporally resolved fossil fuel emission distributions on atmospheric CO2 gradients and variability. 5) Testing the impact of existing and planned remote sensing data sources (e.g., AIRS, MODIS, OCO) on inference of CO2 sources and sinks, and use the model to help establish measurement requirements for future remote sensing instruments. The results will help to prepare for the use of OCO and other satellite data in a multi-disciplinary carbon data assimilation system for analysis and prediction of carbon cycle changes and carbodclimate interactions.
Document ID
20050180406
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Kawa, S. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Denning, A. S.
(Colorado State Univ. Boulder, CO, United States)
Erickson, D. J.
(Oak Ridge National Lab. TN, United States)
Collatz, J. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Pawson, S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
January 1, 2005
Subject Category
Meteorology And Climatology
Meeting Information
Meeting: The Orbiting Carbon Observatory Science Team Meeting
Location: Pasadena, CA
Country: United States
Start Date: March 21, 2005
End Date: March 23, 2005
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available