20070621: GFS-based MOS and LAMP

[Linda Miller]

NOUS41 KWBC 212856 
PNSWSH

TECHNICAL IMPLEMENTATION NOTICE 07-42
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
1225 PM EDT THU JUN 21 2007

TO:       	FAMILY OF SERVICES /FOS/ SUBSCRIBERS... NOAA 
          	WEATHER WIRE SERVICE /NWWS/ SUBSCRIBERS...
          	EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
          	/EMWIN/ SUBSCRIBERS...NOAAPORT SUBSCRIBERS    
          	...OTHER NATIONAL WEATHER SERVICE /NWS/
		CUSTOMERS AND PARTNERS...NWS EMPLOYEES

FROM:     	PAUL HIRSCHBERG
    		SCIENCE PLANS BRANCH CHIEF
	    	OFFICE OF SCIENCE AND TECHNOLOGY /OST/

SUBJECT:	CHANGES TO GFS-BASED MOS AND LAMP PRODUCTS EFFECTIVE 
                SEPTEMBER 11 2007

REFER TO:	TECHNICAL IMPLEMENTATION NOTICE /TIN/07-34
	     	TRANSMITTED ON MAY 8 2007

EFFECTIVE TUESDAY SEPTEMBER 11 2007...BEGINNING WITH THE 1200 
UNIVERSAL COORDINATED TIME /UTC/ CYCLE...THE NWS WILL MAKE THREE 
CHANGES TO THE GLOBAL FORECAST SYSTEM /GFS/ -BASED MODEL OUTPUT 
STATISTICS /MOS/ SYSTEM.  ONE OF THESE CHANGES IS TO THE GFS-
BASED LOCALIZED AVIATION MOS PROGRAM /LAMP/ PRODUCTS.

CHANGE 1:

STATIONS WILL BE ADDED TO THE GFS-BASED MOS VISIBILITY... 
OBSTRUCTION TO VISION AND PROBABILITY OF PRECIPITATION 
CHARACTERISTIC GUIDANCE FOR THE 0000...0600...1200...AND 1800 
CYCLES.  THIS WILL BRING THE NUMBER OF STATIONS WITH GUIDANCE 
FOR THESE ELEMENTS TO 1593.  A LIST OF THE STATIONS AVAILABLE IN 
THE MOS GUIDANCE IS AVAILABLE AT /USE LOWER CASE LETTERS/:

     HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP/STADRG.HTML

GFS-LAMP WILL BEGIN PRODUCING VISIBILITY...CONDITIONAL 
VISIBILITY...AND OBSTRUCTION TO VISION GUIDANCE AT THESE 
STATIONS FOR THE 0000...0600...1200...AND 1800 UTC CYCLES...AND 
PRECIPITATION CHARACTERISTIC GUIDANCE FOR ALL EIGHT CYCLES.  A 
FULL DESCRIPTION OF THIS CHANGE IS AVAILABLE AT /USE LOWER CASE 
LETTERS/:

HTTP://WWW.NWS.NOAA.GOV/MDL/LAMP/GFSLAMP/DOCS/CHANGE_NOTICE_0620
2007.SHTML

THESE CHANGES WILL SLIGHTLY ALTER THE FORMAT OF THE MAV AND LAV 
TEXT PRODUCTS BECAUSE NEW LINES CONTAINING THIS GUIDANCE WILL BE 
ADDED TO THE EXISTING BULLETINS TO ACCOMMODATE THESE CHANGES.  
THE COMMUNICATION IDENTIFIERS FOR THE TEXT AND BUFR PRODUCTS 
AFFECTED BY THIS CHANGE ARE SHOWN IN TABLE 1 BELOW.  

CHANGE 2:

THE CLIMATOLOGICAL MAXIMUM AND MINIMUM TEMPERATURE VALUES 
CURRENTLY INCLUDED IN THE GFS-BASED MOS EXTENDED-RANGE MEX TEXT 
PRODUCTS WILL BE REPLACED WITH CLIMATOLOGICAL VALUES DERIVED 
FROM THE GRIDDED PARAMETER-ELEVATION REGRESSIONS ON INDEPENDENT 
SLOPES MODEL /PRISM/ NORMALS. THIS DATA IS AVAILABLE COURTESY 
OF A COOPERATIVE VENTURE BETWEEN OREGON STATE UNIVERSITY AND THE 
UNITED STATES DEPARTMENT OF AGRICULTURE-NATURAL RESOURCES 
CONSERVATION SERVICE.  THE PRISM NORMALS ARE CREATED USING DATA 
FROM 1971 TO 2000.  CLIMATOLOGICAL MAXIMUM AND MINIMUM 
TEMPERATURES WILL BE AVAILABLE FOR ALL SITES IN THE MEX TEXT 
PRODUCT THAT ARE LOCATED IN THE CONTIGUOUS UNITED STATES AND 
ALASKA.  THE COMMUNICATION IDENTIFIERS FOR THE MEX TEXT PRODUCTS 
ARE SHOWN IN TABLE 2 BELOW.  

CHANGE 3:

THE 12-HR MEAN TOTAL SKY COVER GUIDANCE CURRENTLY AVAILABLE IN 
THE GFS-BASED MOS EXTENDED-RANGE 0000 UTC MEX TEXT PRODUCTS 
LABELED AS CLD WILL BE REPLACED WITH 12-HR MEAN OPAQUE SKY COVER 
GUIDANCE.  THE CLD LABEL WILL NOT CHANGE.  THIS NEW GUIDANCE IS 
DERIVED FROM THE GFS MOS 3-HOURLY OPAQUE CLOUD GUIDANCE 
DESCRIBED IN TIN 07-34 AND WILL BE AVAILABLE FOR ALL 1593 
STATIONS IN THE MEX TEXT PRODUCT AT BOTH THE 0000 AND 1200 UTC 
CYCLES.  THE COMMUNICATION IDENTIFIERS FOR THE MEX TEXT PRODUCTS 
ARE SHOWN IN TABLE 2 BELOW. 


TABLE 1.  COMMUNICATION IDENTIFIERS FOR THE GFS-BASED MOS AND 
LAMP TEXT AND BUFR PRODUCTS AFFECTED BY STATION UPDATES.  NOTE 
THAT THE 69 NEW STATIONS ARE CURRENTLY IN THE BUFR PRODUCTS.  
THE ONLY CHANGE WILL BE THAT THE GUIDANCE VALUES FOR THE 
ELEMENTS LISTED ABOVE WILL NO LONGER BE SET TO MISSING.

WMO HEADING    AWIPS ID         WMO HEADING    

MOS TEXT PRODUCTS               MOS BUFR PRODUCTS	
FOUS21 KWNO    MAVNE1           JSML31 KWNO                           
FOUS22 KWNO    MAVSE1           JSML32 KWNO       
FOUS23 KWNO    MAVNC1           JSML33 KWNO
FOUS24 KWNO    MAVSC1           JSML34 KWNO
FOUS25 KWNO    MAVRM1           JSML35 KWNO
FOUS26 KWNO    MAVWC0           JSML36 KWNO
FOAK37 KWNO    MAVAJK           JSML37 KWNO

LAMP TEXT PRODUCT               LAMP BUFR PRODUCTS
FOUS11 KWNO    LAVUSA           JSMF11 KWNO
                                JSMF12 KWNO     
                                JSMF13 KWNO     
                                JSMF14 KWNO     
                                JSMF15 KWNO     
                                JSMF16 KWNO     
                                JSMF17 KWNO    

TABLE 2.  COMMUNICATION IDENTIFIERS FOR THE GFS-BASED MOS MEX 
EXTENDED-RANGE PUBLIC WEATHER TEXT PRODUCTS AFFECTED BY CHANGES 
2 AND 3.

WMO HEADING    AWIPS ID   	

FEPA20 KWNO    MEXPA0
FEUS21 KWNO    MEXNE1 		 
FEUS22 KWNO    MEXSE1  		 
FEUS23 KWNO    MEXNC1         	
FEUS24 KWNO    MEXSC1         	
FEUS25 KWNO    MEXRM1         	
FEUS26 KWNO    MEXWC0         	
FEAK37 KWNO    MEXAJK
FEAK38 KWNO    MEXAFC
FEAK39 KWNO    MEXAFG
		

FOR QUESTIONS ABOUT THE MOS GUIDANCE...PLEASE CONTACT:

     REBECCA COSGROVE
     MDL/SILVER SPRING MARYLAND
     PHONE:  301-713-0023 EXT. 124
     E-MAIL: REBECCA.COSGROVE at NOAA.GOV

LINKS TO THE MOS PRODUCTS...ALONG WITH DESCRIPTIONS...CAN BE 
FOUND AT /USE LOWER CASE LETTERS/:
  
     HTTP://WWW.NWS.NOAA.GOV/MDL/SYNOP

FOR QUESTIONS ABOUT THE LAMP GUIDANCE...PLEASE CONTACT:

     JUDY GHIRARDELLI
     MDL/SILVER SPRING MARYLAND
     PHONE:  301-713-0056 EXT. 194
     E-MAIL: JUDY.GHIRARDELLI at NOAA.GOV

LINKS TO THE GFS-LAMP PRODUCTS...ALONG WITH DESCRIPTIONS...CAN 
BE FOUND AT /USE LOWER CASE LETTERS/:

     HTTP://WWW.NWS.NOAA.GOV/MDL/LAMP

THIS AND OTHER NWS TECHNICAL IMPLEMENTATION NOTICES ARE 
AVAILABLE ON THE INTERNET AT /USE LOWER CASE LETTERS/:

     HTTP://WWW.NWS.NOAA.GOV/OM/NOTIF.HTM

$$


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