NOTE: The nws-changes mailing list is no longer active. The list archives are made available for historical reasons.
796 NOUS01 KWBC 242029 MESSAGE 97-08 /COR/ PLEASE DISREGARD PREVIOUS MESSAGE NOUS97-08 SECTION 1. A GRID DEFINITION SECTION /GDS/ WILL NOT IMI NOT BE CONTAINED IN THE NEW PRODUCTS. NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION /NCEP/ WILL BE MOVING THE GENERATION OF THE 2.5X5 AND 5X5 DEG AVN/MRF INTERNATIONAL GRIB PRODUCTS FROM THEIR HITACHI /HDS/ MAINFRAME COMPUTER TO THE CRAY MAINFRAME ON TUES 4 MAR 1997. THESE PRODUCTS NOW BEING GENERATED DIRECTLY FROM THE CRAY FORECAST FILES WILL CONTAIN SEVERAL DIFFERANCES WHICH MUST BE NOTED. 1. PERIOD OF TIME /P1/ NOW OCCUPIES OCTETS 19 AND 20 INSTEAD OF OCTET 20. 2. OCTET 21 WILL NOW CONTAIN A 10 /HEXIDECIMAL 0A/ INDICATING THAT P1 OCCUPIES OCTETS 19 AND 20 PRODUCT VALID REFERENCE TIME /PLUS/ P1 AS CODE IN THE WMO GRIB STANDARDS. 3. OCTETS 10-12 WILL BE MODIFIED FOR 4 PARAMETER TYPES THESE ARE THE LEVEL INDICATORS / OCTET 10 / AND HEIGHT OF THE LEVEL OR LAYER / OCTETS 11-12/ AS SPECIFIED BY THE SPECTRAL GLOBAL MODEL. THE FIELDS CHANGED ARE - PARAMETER FROM TO SFC TEMP TO 2 METER TEMP 010000 690002 BOUNDARY LVL RELATIVE HUMIDITY 6C2164 741E00 BOUNDARY LVL U-WIND 6C0064 741E00 BOUNDARY LVL V-WIND 6C0064 741E00 NCEP APOLOGIZES FOR THE SHORT WARNING ON THESE CHANGES AND THE CONFUSION REGARDING THE GDS. THE HDS COMPUTER WILL BE REMOVED FROM SERVICE ON 10 MAR 1997. NCEP HAD NOT PLANNED TO CONVERT THESE PRODUCTS TO THE CRAY BUT WERE ASKED TO DO SO AS SOME OF THE SUBSCRIBERS HAVE NOT CONVERTED TO THE 1.25 DEG WAFS PRODUCTS. RTH WASHINGTON SENDS
nws-changes archives: