Content-Transfer-Encoding: 7bit Message-Id: <625F01D2-EF23-4426-A559-2E87D4B5CFE0@nasa.gov> Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed To: IGSMail From: Carey Noll Subject: [IGSMAIL-5597]: New troposphere product available Date: Wed, 25 Apr 2007 15:08:17 -0400 Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 25 Apr 12:02:39 PDT 2007 Message Number 5597 ****************************************************************************** Author: Sung Byun/JPL Dear Colleagues: We have added a new set of IGS troposphere products, a comparison between the new IGS trop product and each AC's submitted products by ground station. Each ground station has one file per year. The file content is a simple time series of troposphere comparison results. The file looks like this: # cal_tm gps_tm AC bias(mm) sdev(mm) 2006-12-26 14072 eur -2.7 4.0 2006-12-27 14073 eur -2.9 4.3 2006-12-27 14073 jpl 6.1 6.6 2006-12-28 14074 eur -1.2 1.9 The first column is calendar time, the second is GPS time, and the third is the AC. The fourth and the fifth columns are the daily bias and the standard deviation WRT the new IGS trop product in that order. We also provide the station-based comparison plot for the entire comparison time series. There are now quite a few troposphere related products comprising both the new and legacy procedure. So it would be more appropriate to improve the organization of these products. At the CDDIS the IGS troposphere product files are archived with the following directory structure. ftp://cddis.gsfc.nasa.gov/pub/gps/products/troposphere/cmp (comparison of new and AC submitted product) /gps/products/troposphere/new (new product) /gps/products/troposphere/old (legacy product, including NRT files) /gps/products/troposphere/rpt (reports) /gps/products/troposphere/sta (ground station comparison files) /gps/products/troposphere/sub (troposphere AC submission files) The previous directory structure will remain online for the near future using links to the new directory structure. Best, Sung ----- Ms. Carey Noll Manager, Crustal Dynamics Data Information System (CDDIS) Secretary, ILRS Central Bureau NASA GSFC Code 690.5 Greenbelt, MD 20771 USA E-mail: Carey.Noll@nasa.gov Voice: (301) 614-6542 Fax: (301) 614-6015 WWW: http://cddis.gsfc.nasa.gov