RUC20 grid availability
Inventory of all RUC files from NCEP at http://www.nco.ncep.noaa.gov/pmb/products/ruc2
All RUC GRIB and BUFR data available from NCEP ftp site at: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/ruc/prod/
For almost all RUC data, go to ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/ruc/prod/ruc2a.yyyymmdd/, ****** OR ******* FOR RUC analyses at 0000 and 1200 UTC that use complete raob data: ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/ruc/prod/ruc2b.yyyymmdd/,WARNING: the RUC analyses files in the ruc2a directories are "early look" analyses missing most of the raob data. (Forgive us that such analyses even exist, considering the endless problems they have created.)
where yyyy=year, mm=month, dd=day, One finds the following classes of files, with the following filenames and subdirectories of form RUC native (hybrid) level files -------------------------------- ruc2.thhz.bgrb20anl ruc2.thhz.bgrb20fhh RUC native output on hybrid levels at 20km resolution anl=analysis, and fhh=forecast time hh hours after initial. These are ~52Mb in size. I believe these are the bgrb files at full 20km50L resolution. For variables included, see see http://ruc.fsl.noaa.gov/ruc2vars.html ruc2.thhz.bgrbanl ruc2.thhz.bgrbfhh same as above but thinned to 40km output grid. NOTE: THESE 40KM NATIVE GRIDS NOW HAVE 50 LEVELS INSTEAD OF 40. Also, they have the same 38 2-d variables as from the RUC40 but also 8 extra 2-d variables. Isobaric grid files --------------------- ruc2.thhz.pgrb20anl ruc2.thhz.pgrb20fhh anl=analysis, and fhh=forecast time in hours. isobaric 25mb plus 88 2-d fields files are about 28Mb. These are the native horizontal grid (20km spacing) and 37 isobaric levels, plus sfc fields. ruc2.thhz.pgrbanl ruc2.thhz.pgrbfhh Same as above except for 40km output thinned from 20km grids These files are about 7Mb. Besides the anal, there are 1,2,3,6,9,12h fcsts. pgrb = RUC isobaric output Surface grid files ------------------ ruc2.thhz.sgrb20anl ruc2.thhz.sgrb20fhh anl=analysis, and fhh=forecast time in hours. 20km 'surface' files - 25 2-d fields - sfc, precip, prec type, stability, etc. These files average about 1.7Mb, xcpt for the .anl which are closer to 1.4Mb. ruc2.thhz.sgrbanl ruc2.thhz.sgrbfhh same as above but thinned to 40km output grid These files are about 420Kb, xcpt for the .anl files, which are ~350Kb. BUFR sounding files ------------------- Stations files with hourly output -------------------------------- bufrsnd.thhz This subdirectory contains BUFR sndgs for hour hhz. Files are of form bufr.nnnnnn.yyyymmddhh, where nnnnnn = 6-digit stn number (see sm info on Eta BUFR sndgs in ~jmbrown/ncep_news/eta for station details), yyyy=year, mm=month of year, dd=day of month, hh=hour of day in UTC. There is one of these files for each initial time for each stn. There is hourly output for a number of variables, including all variables needed for a sounding, also the RUC hydrometeor mixing ratios. Also precip, stability, surface, soil, etc. size - 15 KB for 3h fcsts - 26 KB for 12h fcsts Note that these files have, according to note frm Geoff Maniken, all our soil levels in them. Since we have one more than Eta, Geoff sez "All of the mnemonics are exactly the same between the two models [RUC20 and Eta, but the RUC does indeed have an extra soil layer, and this must be accounted for in unpacking tables." ruc2.thhz.class1.bufr.tm00 monolithic BUFR sndg file, about 16Mb. ------------------------- all stations, all output times from a given RUC analysis/model run As with the files in the bufrsnd.thhz subdirectory, these files at the 3-h syn times are longer (15863Kb) than at the other times (4888Kb). They all have the tm00 suffix. AWIPS output files ------------------ ruc2.thhz.grb2anl ruc2.thhz.grb2fhh anl=analysis, and fhh=forecast time in hours. AWIPS output files for thinned 40km RUC grid - 236 grid These are gnly just under 1.4Mb each. Forecast times are 1,2,3,6,9,12h. g236xtrn = FAA output extracted from pgrb FAA output files ---------------- ruc.thhz.g236xtrn.anl ruc.thhz.g236xtrn.fhh anl=analysis, and fhh=forecast time hh hours after initial. For FAA usage. output files on AWIPS 236 grid (equivalent to 40km RUC grid) (not sure if these are also used for AWIPS) Subset of RUC isobaric (pgrb) files, includes some isobaric as well as 2-d variables (e.g., sfc, precip, etc.) These are about 6.5mb in size. Files exist for 0 (anl), 1,2,3,4,5,6,7,8,9,12h fcsts.