Delivered-To: igsmail@igscb.jpl.nasa.gov Date: Thu, 18 Dec 2003 13:24:42 +0100 (CET) From: Manuel Hernandez Pajares To: Subject: [IGSMAIL-4767]: IGS Ionospheric information Message-ID: Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 18 Dec 04:33:35 PST 2003 Message Number 4767 ****************************************************************************** Author: Manuel Hernandez-Pajares Dear Colleagues, There are several practical news about the IGS ionospheric products that I would like to comment briefly, due to its potential interest following the suggestions of several colleagues (I apologize if you receive this e-mail more than once): 1) As you might probably know, the IGS global TEC maps (with a resolution of 2 hours x 5 deg. x 2.5 deg. in UT x Lon.x Lat.) are available as an additional IGS official product since April 2003. They are being posted now at the official IGS servers such as CDDISA: ftp://cddisa.gsfc.nasa.gov/gps/products/ionex/ being the combined IGS and the analysis center ionex files stored in the corresponding year and day subdirectories. 2) The generation of a rapid IGS product with an intended latency of less than 24 hours has been started very recently in an initial testing phase (using an automatic software coded from scratch), following the suggestion of the IGS GB during the meeting at Nice, in April 2003. The corresponding rapid combined global TEC maps (with the same resolution than the final ones) can be accessed from the new unofficial rapid IGS server ftp://gage152.upc.es/rapid_iono_igs/ at UPC (please notice the the corresponding rapid IGS ionex files igrgDOY0.YYi.Z, for year YY and day of year DOY, are stored in the corresponding subdirectories for the year YEAR and day DOY). There are also additional information such as comparisons with JASON TEC (performed presently with a latency of about 40 hours) and movies which are stored in a provisional format (this can change during the next weeks). Moreover additional information can be incorporated during the next weeks as well. During the first week of generation of these preliminary rapid IGS maps, the combined product has been typically obtained by the noon (latencies of about 12 hours) with the two available ionospheric analysis centers (CODE and UPC). It is expected than two additional centers (JPL and ESA) will provide its rapid product for the rapid IGS combination during the next days or weeks. Additional information and several related links are provided now in a simple Web document at http://gage152.upc.es/~ionex3/igs_iono/igs_iono.html Don't hesitate to ask or suggest any related question about, which can be very helpful to improve the quality of the IGS ionospheric products. Best regards, Manuel ============================================================================ Manuel Hernandez-Pajares IGS Ionosphere WG chairman E-mail: manuel@mat.upc.es Res. group of Astronomy & GEomatics, UPC/gAGE http://maite152.upc.es/~manuel Jordi Girona 1-3, Mod. C-3 Campus Nord Tel./Fax 34-93-4016029/5981 E08034-Barcelona (Spain)