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Models and Measurements Intercomparison 2Models and Measurement Intercomparison II (MM II) summarizes the intercomparison of results from model simulations and observations of stratospheric species. Representatives from twenty-three modeling groups using twenty-nine models participated in these MM II exercises between 1996 and 1999. Twelve of the models were two- dimensional zonal-mean models while seventeen were three-dimensional models. This was an international effort as seven were from outside the United States. Six transport experiments and five chemistry experiments were designed for various models. Models participating in the transport experiments performed simulations of chemically inert tracers providing diagnostics for transport. The chemistry experiments involved simulating the distributions of chemically active trace cases including ozone. The model run conditions for dynamics and chemistry were prescribed in order to minimize the factors that caused differences in the models. The report includes a critical review of the results by the participants and a discussion of the causes of differences between modeled and measured results as well as between results from different models, A sizable effort went into preparation of the database of the observations. This included a new climatology for ozone. The report should help in evaluating the results from various predictive models for assessing humankind perturbations of the stratosphere.
Document ID
20000024739
Acquisition Source
Langley Research Center
Document Type
Conference Proceedings
Authors
Park, Jae H. (NASA Langley Research Center Hampton, VA United States)
Ko, Malcolm K. W. (Atmospheric and Environmental Research, Inc. Cambridge, MA United States)
Jackman, Charles H. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Plumb, R. Alan (Massachusetts Inst. of Tech. Cambridge, MA United States)
Kaye, Jack A. (NASA Headquarters Washington, DC United States)
Sage, Karen H. (Science Applications International Corp. Hampton, VA United States)
Date Acquired
September 7, 2013
Publication Date
September 1, 1999
Subject Category
Geophysics
Report/Patent Number
NASA/TM-1999-209554
L-17895
NAS 1.15:209554
Funding Number(s)
PROJECT: RTOP 622-57-72-70
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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