From gdimego@ncep.noaa.gov Fri Oct 22 12:04:17 1999 Received: from ncar.UCAR.EDU (ncar.ucar.edu [128.117.64.4]) by niwot.scd.ucar.edu (8.9.1a/8.9.1) with ESMTP id MAA25572 for ; Fri, 22 Oct 1999 12:04:15 -0600 (MDT) Received: from niwot.scd.ucar.edu (niwot.scd.ucar.edu [128.117.8.223]) by ncar.UCAR.EDU (8.9.1a/) with ESMTP id MAA11393; Fri, 22 Oct 1999 12:04:13 -0600 (MDT) Received: from ncar.UCAR.EDU (ncar.ucar.edu [128.117.64.4]) by niwot.scd.ucar.edu (8.9.1a/8.9.1) with ESMTP id MAA25568 for ; Fri, 22 Oct 1999 12:04:12 -0600 (MDT) Received: from hadrian.ncep.noaa.gov (mx.wwb.noaa.gov [140.90.193.131]) by ncar.UCAR.EDU (8.9.1a/) with ESMTP id MAA11222; Fri, 22 Oct 1999 12:03:40 -0600 (MDT) Received: from ncep.noaa.gov (collins.wwb.noaa.gov [140.90.192.70]) by hadrian.ncep.noaa.gov (8.8.8/8.8.8) with ESMTP id OAA02873; Fri, 22 Oct 1999 14:05:23 -0400 Message-ID: <3810A8FB.A59DB765@ncep.noaa.gov> Date: Fri, 22 Oct 1999 14:12:11 -0400 From: Geoff DiMego Organization: NOAA/NWS/NCEP/EMC X-Mailer: Mozilla 4.7 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 Subject: 32 km Eta runs available on web Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Length: 2554 Status: RO X-Status: X-Keywords: EMC has begun twice daily real-time runs of a full resolution 32 km Eta Model prediction and Eta Data Assimilation System (EDAS) on the developmental SGI Origin 2000 computer system. With the inoperable status of the Cray C-90, resulting in a degraded Eta (no EDAS and run at 80 km) backup version run operationally on a Cray J-90, the entire suite of codes/scripts (preprocessing, analysis, prediction model, postprocessing) was ported to the Origin 2000. The purpose of this work is two-fold: 1) Continue to provide the highest quality mesoscale guidance to the field (if logistically possible). 2) Maintain the fully cycled EDAS (unbroken since June 1998 on the Cray C-90). The cycled EDAS has led to a reduction in model biases of soil moisture, 2-m specific humidity, and skin temperature. To maintain these positive benefits it is considered crucial to maintain the self-cycling of soil temperature/moisture in the EDAS. After preliminary testing, the Origin 2000 EDAS/Eta-32 began realtime forecasts at 0000 UTC 10/15/99. The Eta-32 forecast runs at the same speed as it did on the Cray C-90 and finishes 30-60 minutes before the Eta-80 backup on the Cray J-90. Because of this result, NCO personnel are currently working on a robust interface which will substitute Origin 2000 Eta-32 output for Eta-80 output if it is available in time. If these logistical problems can be overcome, then all output files from the Origin 2000 Eta-32 will be used in the NCEP Early suite instead of those from the Eta-80. This would eliminate both sources of current degradation of the early Eta runs at 00z and 12z, i.e. resolution and lack of an EDAS. The one exception is the hourly forecast station profiles in BUFR. The BUFR sounding output from the Origin 2000 run is not produced due to time constraints and must continue to come from the J-90 backup run of the 80 km Eta. Web sites have been setup in the meantime to view the 32 km runs, they can be found at: http://sgi62.wwb.noaa.gov:8080/ETA32/ (CONUS) http://sgi62.wwb.noaa.gov:8080/ETA32AK/ (ALASKA) http://sgi62.wwb.noaa.gov:8080/ETA32EPAC/ (East Pacific) In the near future, we will create a web page showing forecast height errors compared among the Eta-80 backup, the Eta-32 Origin run, and the AVN and will attempt to compute them from all the previous runs that have been made (hopefully). This will be setup at: http://sgi62.wwb.noaa.gov:8080/ZVERIF_ETA32/ These efforts have been largely due to Eric Rogers with help form Matt Pyle, Dennis Keyser and Bill Collins.