Delivered-To: igsmail@igscb.jpl.nasa.gov Message-Id: Date: Thu, 29 Jul 2004 07:44:37 -0700 To: igsmail@igscb.jpl.nasa.gov From: Tony Mannucci Subject: [IGSMAIL-4982]: First GPS occultations from GRACE Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: owner-igsmail Precedence: bulk ****************************************************************************** IGS Electronic Mail 29 Jul 07:45:18 PDT 2004 Message Number 4982 ****************************************************************************** Author: Tony Mannucci Dear Colleagues, It is my pleasure to announce we have processed the first atmospheric occultation profiles from the GRACE satellite. Please check the GENESIS web site for more information: http://genesis.jpl.nasa.gov I would like to thank everybody on the GPS Earth Observatory team at JPL for their participation in this successful first test of the GPS occultation capability onboard GRACE. Thanks also to the GRACE team for scheduling and operating the test. We are very encouraged by the results and look forward to exciting scientific contributions from the GRACE GPS occultation experiment. GPS Earth Observatory Team at JPL: Chi Ao Danan Dong George Hajj Byron Iijima Manuel de la Torre Juarez Da Kuang Tony Mannucci Tom Meehan Larry Young Special Thanks to: Willy Bertiger Gerhard Kruizinga Da Kuang Additional comments courtesy of George Hajj: The retrieval is completely independent of any model (we initialize the hydrostatic at 50km, with T=245K). Note the interesting sharp structure near the tropopause missed by the model (occultation number 1). Sincerely, Tony Mannucci Supervisor, Ionospheric and Atmospheric Remote Sensing Group Jet Propulsion Laboratory, California Institute of Technology Pasadena, CA --