-------- Original Message --------
909
NOUS41 KWBC 151858
PNSWSH
TECHNICAL IMPLEMENTATION NOTICE 09-03
NATIONAL WEATHER SERVICE HEADQUARTERS WASHINGTON DC
158 PM EDT THU JAN 15 2009
TO: SUBSCRIBERS:
-FAMILY OF SERVICES
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-WEB OPERATIONS CENTER
OTHER NWS PARTNERS...USERS AND EMPLOYEES
FROM: JORDAN ALPERT...ENVIRONMENTAL MODELING CENTER /EMC/
RICK HACKENBERG...NCEP CENTRAL OPERATIONS /NCO/
SUBJECT: OPERATIONAL IMPLEMENTATION ON FEBRUARY 14 2009 OF
HIGH AVAILABILITY APPLICATIONS FOR SERVING DATA FROM
THE NOAA OPERATIONAL MODEL ARCHIVE DISTRIBUTION SYSTEM
/NOMADS/ AT THE WEB OPERATIONS CENTER /WOC/
ON FRIDAY FEBRUARY 14 2009...THE NWS NATIONAL CENTERS FOR
ENVIRONMENTAL PREDICTION /NCEP/ WILL START PROVIDING HIGH
AVAILABILITY NOAA OPERATIONAL MODEL ARCHIVE AND DISTRIBUTION
SYSTEM /NOMADS/ APPLICATIONS FOR SERVING MODEL DATA ON THE
WOC SERVER.
NOMADS IS AN IMPORTANT COMPONENT OF NOAA'S INFORMATION DATA
BASE. NOMADS BEGAN AS A PILOT PROJECT DESIGNED TO PROVIDE A
SERVICE ORIENTED FRAMEWORK FOR:
- A DIGITAL ARCHIVE AND REAL TIME DISTRIBUTION OF NOAAS
OPERATIONAL WEATHER MODELS
- AN INNOVATIVE DATA ACCESS PHILOSOPHY TO PROMOTE
INTEROPERABLE ACCESS ACROSS THE GEOSCIENCES
- AN INTEGRATOR OF COMMON WEB SERVICES INFRASTRUCTURE TO
SUPPORT THE DISCOVERY...ACCESS...AND TRANSPORT OF DATA
- REAL-TIME AND RETROSPECTIVE FORMAT INDEPENDENT ACCESS TO
CLIMATE...OCEAN AND WEATHER MODEL DATA.
NWS RECEIVED FAVORABLE COMMENTS ON THE PROPOSAL TO PROVIDE
HIGH AVAILABILITY NOMADS APPLICATIONS FOR SERVING MODEL DATA
ON THE WOC SERVER. NCEP WILL INTRODUCE THE FOLLOWING NOMADS
WEB BASED ACCESS APPLICATIONS:
1. GRIB_FILTER: PROVIDES ACCESS TO BINARY GRIB DATA WITH
SUB-SETTING THROUGH TIME...SPACE AND VARIABLES USING
TRADITIONAL BUT ENHANCED FTP PROCESSES. DATA ARE PROVIDED IN
RAW GRIB FORMAT ONLINE AND RESULTS ARE REPACKAGED GRIB FILES
STREAMED TO THE USERS WORKSTATION. WEB INTERFACES
COMMUNICATE THE USERS REQUEST AND HTTP PROTOCOL IS USED TO
DELIVER RESULTS.
2. OPENDAP /GDS/DODS/ SERVER: THE OPEN SOURCE PROJECT FOR A
NETWORK DATA ACCESS PROTOCOL /OPENDAP/ IMPLEMENTED UNDER THE
GRADS DATA SERVER /GDS/ DISTRIBUTED OCEAN DATA SYSTEM /DODS/
PROVIDES SIMPLE FILE-LEVEL ACCESS/DOWNLOAD VALUES OF ENTIRE
FILES OR ONE OR MORE VALUES FROM THE MATRIX OF SERVER GRIB
DATA HOLDINGS.
THESE CHANGES ARE MADE TO ADDRESS A GROWING NEED FOR REMOTE
ACCESS TO HIGH VOLUME NWP MODEL DATA. A MORE DETAILED
DESCRIPTION OF THESE CHANGES IS ONLINE AT /USE LOWERCASE/:
HTTP://NOMADS.NCEP.NOAA.GOV/
AND VIA SERVICE DESCRIPTION DOCUMENT UNDER THE HEADING
SERVICE DOCUMENT AT THE ABOVE WEBSITE
FOR QUESTIONS ON NOMADS...PLEASE CONTACT:
NCEP NOMADS HIGH AVAILABILITY TECHNICAL SUPPORT:
NCEP NCO PMB HELPDESK
301-763-8000X7198
SCIENCE/DATA QUESTIONS:
JORDAN ALPERT
JORDAN.ALPERT@xxxxxxxx
301-763-8000X7205
NWS TECHNICAL IMPLEMENTATION NOTICES ARE ONLINE AT
/USE LOWERCASE/:
HTTP://WWW.WEATHER.GOV/OS/NOTIF.HTM
$$