NOUS41 KWBC 301938



Technical Implementation Notice 14-06

National Weather Service Headquarters Washington DC

240 PM EST Thu Jan 30 2014


To:        Subscribers:

           -Family of Services

           -NOAA Weather Wire Service

           -Emergency Managers Weather Information Network


           Other NWS Partners, Users and Employees


From:      Hendrik Tolman

           Chief, Marine Modeling and Analysis Branch

           NCEP/Environmental Modeling Center


Subject:   Discontinuation of RTOFS-ET-WPA: Episodic Tracer

           For Western Pacific Effective March 4, 2014


Effective on or about Tuesday, March 4, 2014, the National

Centers for Environmental Prediction (NCEP) will discontinue the

Real-Time Ocean Forecast System (RTOFS) Episodic Tracer for

Western Pacific, (RTOFS-ET-WPA) ocean tracer model, and cease

dissemination of the output products.


The RTOFS-ET-WPA was implemented in July 2012 to model the

contamination created by the Fukushima nuclear power plant

disaster after the tsunami of March 11, 2011.  The implementation

charter for this model stated that it would be discontinued after

dispersion of the material reached a level of concentration

comparable to that of the background contamination levels in the

Pacific Ocean. That condition has been met so this model is being

turned off.


The RTOFS-ET-WPA output had been made available only on the NCEP

FTP server at:


and on the NOMADS server at:


with filenames such as rtofs_et_WPAb_3dz*.nc


For questions regarding this change, please contact:


    Hendrik Tolman

    NCEP/EMC/Marine Modeling and Analysis Branch

    College Park, Maryland

    Phone: 301-683-3748




NWS National Technical Implementation Notices are online at: