UCX chemistry mechanism

NOTE: Page under construction!

On this page, we provide information about the Universal tropospheric-stratospheric Chemistry eXtension (UCX) mechanism in GEOS-Chem. UCX combines both tropospheric and stratospheric reactions into a single chemistry mechanism. It was developed by Sebastian Eastham, Debra Eisenstein, and Steven Barrett and Debra Eisenstein at the Laboratory for Aviation and the Environment at the Massachusetts Institute of Technology.

Overview

Please see the following manuscript, which describes the UCX mechanism in more detail:

1. Eastham, S.D., D.K. Weisenstein, S.R.H. Barrett, Development and evaluation of the unified tropospheric-stratospheric chemistry extension (UCX) for the global chemistry-transport model GEOS-Chem, Atmos. Env., submitted, 2013. (Article) (Supplementary Information)
2. Technical Note: The GEOS-Chem Unified Tropospheric-Stratospheric Chemistry Extension (UCX): Interim Distribution, September 2013 (Article)

Provisional code

Steven Barrett wrote:

As a few people have asked for the code for the strat chem version of GEOS-Chem, we've posted it as a simple compressed file here as a temporary location so they can use it right away until it gets integrated into the main code.

[Until UCX gets implemented into the standard GEOS-Chem code], we'll just keep track of any fixes/issues that come up until then. Feel free to point people who might be interested to download it, and there's associated documentation (including the manuscript as an appendix).