20070621: GFS-based MOS and LAMP

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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@xxxxxxxx
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@xxxxxxxx
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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