1. summary: Global sulfur emissions at 0m and 100m. from 19900115-20951015. One time sample on the 15th day of Jan, Apr, Jul, and Oct every 15 years. 2. created by: Dani Bundy Coleman, bundy@ucar.edu 3. date and time SOx_emissions_48x96_L2_c040817.nc: Aug 17 2004 4. platform: eldo (Sun) 5. dataset format: netCDF 6. endian: N/A 7. archival copy location: 8. creation details Aug 17, 2004 yorick script to convert 1x1 deg netcdf file to T31 netcdf http://www.cgd.ucar.edu/cms/bundy/ccsm/sulfur/dms/cv_dms_T31.i 9. derived from: Original README: DMS emission inventories for the WCRP model simulations Geert-Jan Roelofs IMAU, Utrecht University The Netherlands phone: +31 (0)30 2532821 email: roelofs@phys.uu.nl This memo describes the compilation of the DMS inventories supplied for use in the WCRP/IGAC model simulations at the workshop "A comparison of the performance of large scale models in simulating atmospheric sulphate aerosols" (COSAM) to be held 19-21 October, 1998 in Halifax, Canada. The DMS emission database has been compiled by Kettle et al. (1996). DMS surface concentrations were recalculated using the parameterization for gas flux from the ocean by Liss and Merlivat (1986) and monthly averaged ECMWF wind fields from Trenberth et al. (1989). The resolution of the emission inventory is 1 x 1 degree, with longitude from 179.5 W to 179.5 E (360) and latitude from 89.5 S to 89.5 Ni (180). Emissions are in micromoles/day/m2. The following table presents a summary of the DMS emission estimates in the inventory (The last column assumes a month length of 30 days) month micromoles/day Tg S/mnth - - - - - - - - - - - - - - - - - - 1 2.93855e+15 2.82 2 1.68300e+15 1.61 3 1.75429e+15 1.68 4 1.30515e+15 1.25 5 1.21689e+15 1.17 6 1.30128e+15 1.25 7 1.44087e+15 1.38 8 1.42310e+15 1.37 9 1.25946e+15 1.21 10 1.04357e+15 1.00 11 1.95036e+15 1.87 12 2.36849e+15 2.27 The annually and globally integrated DMS flux is appr. 18.9 Tg S/yr. References: A. J. Kettle, M. O. Andreae, D. Amouroux, G. Helas, S. Rapsomanikis, G. Roberts, G. Schebeske, G. Uher, T. Bates, H. Bingemer, R. Staubes, R. Boniforti, P. Matrai, A. R. McTaggart, N. Mihalopoulos, B. C. Nguyen, J. P. Putaud, and S. Turner, A preliminary global data base of sea surface dimethyl sulfide measurements and a simple model to predict sea surface dimethyl sulfide as a function of latitude, longitude, and month, EOS, 77, 417, 1996 Kevin E. Trenberth, William G. Large, and Jerry G. Olson, The effective drag coefficient for evaluating wind stress over the oceans, Journal of Climate, 2, 1507-1516, 1989 Peter S. Liss and Liliane Merlivat, "Air-sea exchange rates: introduction and synthesis", in The Role of Air-Sea Exchange in Geochemical Cycling, ed by P. Buat-Menard, pp. 113-127, 1986, D. Reidel Publishing Company 10. code, scripts, namelists, etc, used to create this file Scripts used by Brian Eaton to convert original data from Steve Smith to netcdf. Available from Dani Bundy Coleman bundy@ucar.edu by request. fortran program to read original file dms2nc.mk dms2nc.F Put DMS data from Geert-Jan Roelofs into netCDF file. units for emissions in each grid cell are micromoles/day/m2 Rotate data to begin a greenwich and convert units to kg DMS/m2/s yorick script cv2T62.i Read 1x1 deg data. Do area weighted binning of the data to T62 and write to netCDF output. (cv_dms_T31.i above is a modified version of this)