README -- describes contents of lightning_NOx_201311 27 May 2014 GEOS-Chem Support Team geos-chem-support@g.harvard.edu Summary: =============================================================================== In GEOS-Chem v9-01-01, the following updates were made that impact the emissions of lightning NOx: (1) Bug fix for incorrect cloud-top-height determination (2) Addition of updated vertical release profiles (cf. Ott et al 2010) (3) Removal of obsolete options from the source code (lightning_nox_mod.f) For detailed information about these updates, please see the document prepared by Lee Murray (ltmurray@seas.harvard.edu): L.T. Murray, Changes affecting lightning NOx emissions in GEOS-Chem v9-01-01, January 2011, (ltmurray@post.harvard.edu) http://acmg.seas.harvard.edu/geos/wiki_docs/emissions/LNOx-v9-01-01.Release.Notes.pdf Please also see this wiki post about GEOS-5.2.0 and OTD/LIS redistribution: http://wiki.seas.harvard.edu/geos-chem/index.php/Lightning_NOx_emissions#BETA_values_for_North_America_for_years_after_2008 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%% WHAT'S NEW IN DIRECTORY lightning_NOx_201311: %%% %%% %%% %%% This directory preserves all existing files in lightning_NOx_201101, %%% %%% with the exception of: %%% %%% %%% %%% (1) Obsolete file "OTD-LIS-Local-Redist.CTH.v5.geos5.7.2.2x25 file" %%% %%% has now been removed. %%% %%% %%% %%% (2) File "OTD-LIS-Local-Redist.CTH.v5.geosfp.2x25" from Lee Murray %%% %%% has now been added (dated 2014-01-15) %%% %%% %%% %%% (3) See Addendum dated 24 Apr 2014 below. %%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% File list: =============================================================================== README -- this file OTD-LIS-Local-Redist.CTH.v5.geos4.2x25 -- OTD/LIS local redistribution files for GEOS-4 meteorology OTD-LIS-Local-Redist.CTH.v5.geos5.1.0.2x25 -- OTD/LIS local redistribution files for GEOS-5.1.0 meteorology (i.e. for GEOS-5 files prior to 9/1/2008) OTD-LIS-Local-Redist.CTH.v5.geos5.2.0.2x25 -- OTD/LIS local redistribution files for GEOS-5.2.0 meteorology (i.e. for GEOS-5 files from 9/1/2008 onward) OTD-LIS-Local-Redist.CTH.v5.geosfp.2x25 -- OTD/LIS local redistribution files for GEOS-FP meteorology OTD-LIS-Local-Redist.CTH.v5.merra.2x25 -- OTD/LIS local redistribution files for MERRA meteorology light_dist.ott2010.dat -- File containing vertical probability functions from Ott et al 2010 References: =============================================================================== Allen, D.J., and K.E. Pickering, Evaluation of lightning flash rate parameterizations for use in a global chemical transport model, J Geophys Res, 107(D23), 4711, 2002 Allen D., K.E. Pickering, B. Duncan, M. Damon, Impact of lightning NO emissions on North American photochemistry as determined using the Global Modeling Initiative (GMI) model, J Geophys Res, 115, D22301, 2010 Ott L.E., K.E. Pickering, G.L. Stenchikov, D.J. Allen, A.J. DeCaria, B. Ridley, R.-F. Lin, S. Lang, W.-K. Tao, Production of lightning NOx and its vertical distribution calculated from three-dimensional cloud-scale chemical transport model simulations, J Geophys Res, 115, D04301, 2010 L.T. Murray, Changes affecting lightning NOx emissions in GEOS-Chem v9-01-01, January 2011, (ltmurray@post.harvard.edu) Pickering K.E., Y. Wang, W.-K. Tao, C. Price, J.-F. Müller, Vertical distributions of lightning NOx for use in regional and global chemical transport models, J Geophys Res, 103(D23), 31203-31216, 1998 Murray, L.T., J.A. Logan, D.J. Jacob, and R.C. Hudman, Spatial and interannual variability in lightning constrained by LIS/OTD satellite data for 1998-2006: implications for tropospheric ozone and OH, in preparation Price, C., and D.H. Rind, A simple lightning parameterization for calculating global lightning distributions, J Geophys Res, 97(D9), 9919-9933, 1992 Price, C., and D.H. Rind, What determines the cloud-to-ground lightning fraction in thunderstorms, Geophys Res Lett, 20(6), 463-466, 1993 Price, C., and D.H. Rind, Modeling global lightning distributions in a general circulation model, Mon Weather Rev, 122(8), 1930-1939, 1994 Sauvage B., R.V. Martin, A. van Donkelaar, X. Liu, K. Chance, L. Jaeglé, P. I. Palmer, S. Wu, and T.-M. Fu, Remote sensed and in situ constraints on processes affecting tropical tropospheric ozone. Atmos Chem Phys, 7, 815-838, 2007 Addendum (24 Apr 2014) =============================================================================== NOTE: We have added the file OTD-LIS-Local-Redist.CTH.v5.geosfp.2x25.v20140401 which contains OTD/LIS data based on GEOS-FP 2x25 met from Oct-Dec 2013. This will allow 1-year benchmark simulations for 2013 to finish normally without encountering the error trap. Original message from Lee Murray: I recently updated the files for another user who provided me the unconstrained lightning flashes. Swap out lightning_nox_mod.F with the attached one, and drop the bpch files in the lightning_NOx_201311 data directories. You should see about 6 Tg N a-1 globally. (Bob, I'm waiting for a user to provide me with the unconstrained nested flash rates for Oct-Dec 2013, before I push the update for the standard code, to reduce the number of data directory updates, unless enough users start requesting the global files). Lee