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-------- Original Message -------- A new message, "Update of WVSS Installations," was posted on the ESRL/GSD AMDAR Information Forum (http://amdar.noaa.gov/oper/forum/) by Dave Helms on 18 Oct 11, 9:03 MT The message reads as follows: ===================================================================== Hi All: As of today, the Water Vapor Sensing System (WVSS)is flying on the following aircraft: United Parcel Service: 25 B757-200 Southwest Airlines: 29 B737-300 These 54 aircraft are generating about 20,000 observations per day (about 500 soundings/day) which are available on AWIPS and in operational NCEP NAM model. With the pending certification of the B737-700 aircraft, we hope to grow the WVSS fleet to 92 aircraft by this time next year. WVSS data are generally as good or better than radiosonde humidity observations, per NCEP/NCO (Brad Ballish) inter-comparison statistics. The current exception is GSD tail #1370; this UPS aircraft is scheduled for depot repair and its WVSS unit will be swapped while the aircraft is in the maintenance facility. The original design requirement for WVSS was to operate without additional calibration and maintenance for 2+ years. With the first WVSS sensors were installed over 2 years ago, most are meeting this availability specification for their entire duty cycle. ===================================================================== This is an automatically-generated notice. If you'd like to be removed from the mailing list, please visit the ESRL/GSD AMDAR Information Forum at (http://amdar.noaa.gov/oper/forum/) and use the '(un)subscribe' option to remove your name, or send your request directly to (aircraft_request.gsd@xxxxxxxx). If you wish to respond to this message, please post your response directly to the board--please do not reply to this message.
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