NOUS41 KWBC 091950

PNSWSH

 

Service Change Notice 17-68

National Weather Service Headquarters Silver Spring MD

350 PM EDT Fri Jun 9 2017

 

To:        Subscribers:

           -NOAA Weather Wire Service

           -Emergency Managers Weather Information Network

           -NOAAPORT

           Other NWS Partners, Users and Employees

 

From:      Dave Myrick

           NWS Office of Science and Technology Integration

 

Subject:   Upgrade to Global (multi_1) Wave Model Point Data

           on NOAAPORT and Web Services: Effective July 19, 2017

 

Effective on or about Wednesday, July 19, 2017, beginning with

the 1200 Coordinated Universal Time (UTC) run, the National

Centers for Environmental Prediction (NCEP) will upgrade the

Global Wave Model to update existing buoy points and add new ones

on both NOAAPORT and NCEP web services.

 

NOAAPORT/SBN Data Point Additions:

The point output data from the multi_1 model are being expanded

to include new points. For the detailed list of the coordinates,

station names and corresponding WMO headers view Table 1 in the

PDF below:

 

http://www.nco.ncep.noaa.gov/pmb/changes/docs/Multi_1_table_2017.pdf

 

The following changes only apply to products available on the

NCEP dissemination sites:

 http://nomads.ncep.noaa.gov/pub/data/nccf/com/wave/prod/

 ftp://ftp.ncep.noaa.gov/pub/data/nccf/com/wave/prod/

 http://www.ftp.ncep.noaa.gov/data/nccf/com/wave/prod/

 

Boundary Data Point Addition:

The point output data for applications, such as downstream

boundary conditions, delivered from output of the multi_1 model

are being modified to add user-requested points. For the detailed

list of the coordinates, station names of the excluded points see

Table 2 in the PDF above.

 

Boundary Data Point Removal:

The point output data for applications, such as downstream

boundary conditions, delivered from output of the multi_1 model

are being modified to remove redundant or obsolete points. For

the detailed list of the coordinates, station names of the

excluded points see Table 3 in the PDF above.

 

These changes apply to file names on the NCEP web services with

the following pattern:

 1. multi_1.YYYYMMDD/bulls.tCCz/*

 2. multi_1.YYYYMMDD/[akw|enp|wna|nww3].tCCz.FILE

Where FILE is: bull_tar; cbull_tar; csbull.tar and spec_tar.gz

Where YYYY is year, MM is month, DD is day, and CC is cycle

 

Sample data feed is available here:

ftp://polar.ncep.noaa.gov/waves/ftp_m1grib/multi_1.latest_run/

 

Details about the NCEP Multi-grid Wave Model are online at:

http://polar.ncep.noaa.gov/waves/index2.shtml

 

Any questions, comments or requests regarding this implementation

should be directed to the contacts below.  We will review any

feedback and decide whether to proceed.

 

For questions regarding these model changes, please contact:

 

Henrique Alves

NCEP/Marine Modeling and Analysis Branch

NCWCP

College Park, Maryland

301-683-3762

henrique.alves@noaa.gov

 

For questions regarding the data flow aspects of this data,

please contact:

 

Carissa Klemmer

NCEP/NCO Dataflow Team Lead

College Park, Maryland

301-683-0567

ncep.list.pmb-dataflow@noaa.gov

 

National Service Change Notices are online at:

 

http://www.weather.gov/om/notif.htm

 

NNNN