Operational implementation of Great Lakes (GRL) waves model.

Adding buoy 44027 to WNA and NAH models.

Added points MFR51 through MFR63 to ENP and NPH models (ftp site only).

Experimental Great Lakes Waves web site opened to the public.

Capping the drag coeffcient to 0.0025 for more realistic stresses and wave growth in extreme wind conditions. This impacts wave growth in Hurricane conditions only.

First EGOWaFS web page openend to the public.

Operational implementation of the Ensemble GLobal Operational Wave Forecast System (EGOWaFS).

Time resolution of NAH model GRIB files set to 1h (was 3h).

Adding point 46089 to the ENP and NPH models. Adding points 41040, 41041, 41100, 41101, 42055, 42056, 42057 and 42058 to WNA and NAH models.

Adding point WRB07 to the WNA and NAH models.

Adaptation of NWW3 wave model suite to new GFS atmospheric model resolution of T382.

Data added to AWIPS for output points: 46087, NEWGUINE_S, GYX01, MIA01, MIA02, MLB01, OPCP01 through OPCP13 and OPCA01 through OPCA09.

Inclusion of links to grid preprocessor input files, bathymetric grids and obstructions grids via the implementations page in the NWW3 web site.

Buoy/output point changes/updates: Buoy 42001 repositioned according to NDBC specifications for redeployment. New output points added: buoy 46087 (Juan de Fuca strait: ENP/NPH), NEWGUINE_S (South of New Guinea: GLOBAL), GYX01 (Portland/Gray, ME: WNA/NAH).

Forecast range of hurricane-generated wave models (NAH and NPH) extended to 126h. Affects field outputs on web only and point outputs on web and AWIPS.

Blending package in NAH and NPH hurricane-generated wave models upgraded to improve/correct blending of multiple simultaneous GFDL model runs to GFS winds.

Forecast range of model data available on AWIPS extended to 180h. All models except hurricane-generated wave models NAH and NPH.

Web-browser access to point output bulletins changed from ftp to http protocol on text and tabular data interfaces.

Buoy 44141 repositioned according to Environment Canada specifications for redeployment.

Changes to hurricane-generated wave models (NAH and NPH): refraction time step reduced from 3600 to 1800 sec (corrects numerical noise in nearshore areas); averaging parameter for aleviation of garden sprinkler effect increased from 2.0 to 4.0.

Adding output points MIA01, MIA02, MLB01 and JAX02 to WNA and NAH models.

Adding 13 output points OPCP01 through OPCP13 to ENP and NPH models.

Adding 9 output points OPCA01 through OPCA09 to WNA and NAH models.

Implementation of new look onto NWW3 web site.

adding data assimilation of buoy and ERS2 altimeter data into global model.

Extending forecast horizon of NWW3, AKW WNA and ENP models to 180h. (March 10, 2004: on web site)

Adding buoy 46086 to ENP and NPH models. Adding buoys 42041 and 41013 and output points EYW01 and EYW02 to WNA and NAH models. (Web site only.)

Placed WNA and NAH data for 44018 , BOX01 and CAR01 back on AWIPS. These data points had accidentally been dropped from AWIPS on July 29. The data were available on the web site for this period.

Operational implementation of NPH model. NPH data has been added to the operational web page on Aug. 13, and is scheduled for removal from the experimental page in the middle of September.

Replacing defunct station DSLN7 with its NDBC replacement 41025 in WNA and NAH models (web and AWIPS). Adding buoy 46015 to ENP model (web site only).

Adding output point 62001 to global model (web only)

Add point SGX01 to ENP model, replacing old SAN_DIEGO point from global model.

Making four cycles per day official by adding 06z and 18z product generation to SBN data stream. Extending forecast horizon of all models except NAH to 7 days. Removing temporary output points at west coast from global model (SAN_DIEGO, SM_BASIN, CONCEPTION, SAN_MARTIN, MONTEREY, PT_REYES, PT_ARENA, MENDOCINO, BLANCO, COLUMBIA and FLATTERY). All these output points are superseded by NDBC buoy locations resolved by the ENP model. Adding SBN GRIB transmission for ENP model. Updating SBN headers for bulletins in AWIPS. Removing typographical error from bulletins.

Reopen experimental pages with NPH model and global model with data assimilation.

Add new NDBC buoy location 46080 and 46082 to AKW and ENP models. Add point CAR01 to NAH and WNA models (web site only as of Feb. 19).

Replace WFO output point OKX01 with new NDBC buoy location 44017. Buoy 44017 will replace OKX01 on AWIPS directly, using the same header.

Upgrade of atmospheric model to higher resolution of T254L64. This system is now called the Global Forecast System or GFS.

Adding buoy 44018 and point BOX01 to WNA and NAH model. Adding point HNL12 to ENP model. Adding points MIDWAY, FF_SHOALS, JOHNSTON, NAURU, TARAWA, FUNAFUTI, NUKUNONO, PAPEETE, RAROTONGA, NIUE, TONGATAPU, NADI, PORT_VILA and NOUMEA to NWW3 model. Position of buoy 42002 updated in NWW3, WNA and NAH models.

Updating historical data with results of WAVEWATCH III version 2.22. Adding ENP model to historical data site.

Going to running the model four times per day (00z, 06z, 12z and 18z cycles). Hindcasts in text products and maps now only go back 6 hours previous to hindcast. GRIB output interval remains at 3 hours.

Changing to WAVEWATCH III version 2.22 for all models and extendig ENP domain to 60.5^oN, with following changes to output points:

Point JAX01 in the WNA and NAH model replaced by NDBC buoy 41012 (same AWIPS header). Point 46003 in NWW3 and AKW model removed (replacement point 46066 introduced earlier). Point OAHU in NWW3 removed (replaced by HNL points in ENP as introduced earlier). Added buoy 46072 to AKW model and buoy 46084 to AKW and ENP models.

Changed some island output points in Pacific. These points were all centered at non-resolved islands. Because these islands are now treated at a sub-grid level, some output points need to be moved, if the obstruction at the surrounding grid points is notable. These changes are considered to be temporarily, and final changes to the output points will be addressed after further discussion with the regional WFOs.

GUAM

Moved to 143.75^oE 12.00^oN

SAIPAN

Moved to 147.50^oE 16.00^oN

PALAU

Moved to 136.25^oE 9.00^oN

CHUUK

Moved to 152.50^oE 8.00^oN

POHNPEI

Moved to 157.50^oE 7.00^oN

MAJURO

Moved to 171.25^oE 8.00^oN

ENEWETAK

Moved to 163.75^oE 13.00^oN

PAGO_PAGO

Moved to 168.75^oW 15.00^oS

Start of display of the model results with the WAVEWATCH III version 2.22 on the experimental page.

Restart NAH model with hourly GFDL wind fields and modified blending scheme.

Update all AWIPS bulletin headers, including bulletins for locations previously not send .

ENP model moved to operational web page. Experimental web page disabled for rebuilding.

Operational implementation of ENP model (except for SBN transmissions). Until further notice, this model will remain on the experimental page.

Add output point 46066 to NWW3 and AKW to replace 46003.

Add TPC output points to NWW3 model, buoy 46083 to AKW model, and TPC output points to WNA/NAH model (web site only).

Modified array sizes in several executables and added output of additional boundary data in preparation for internal implementation of ENP model.

ENP experimental model made available to public.

NAH model completely removed from experimental page, start of testing ENP model on experimental page as inhouse model.

OKX01 and CHS01 output points added to WNA and NAH model (web site only).

NAH model moved from experimental to operational web pages.

Addition of output points JAX01, ILM01 and ILM02 to WNA model and web page. Addition to SBN/AWIPS will follow later.

Operational implementation of NAH model. Includes AWIPS GRIB messages,(to be available in AWIPS build 5.2.1). Text bulletins for AWIPS will follow later.

Add 72-120h GRIB fields for NWW3, AKW and WNA model to SBN transmissions (to be available in AWIPS 5.1.2).

Add bulletin files of all models to SBN / AWIPS (to be available in AWIPS 5.1.1).

North Atlantic Hurricane (NAH) wave model approved for operational implementation.

Added selected hurricane model results (NAH) to historical archive.

Start producing compressed format bulletins for future inclusion in AWIPS (now internal NCEP use only).

Moved output locations 42039 and 42040 in WNA model.

Fixed year 2001 rollover bug.

Operations shifted from phase 1 IBM RS6000 SP to phase 2 IBM RS6000 SP.

Added output point AGULHAS_FA to NWW3 model.

cgi version of interactive data page replaced by JavaScript version to reduce work loads on our web server.

Experimental hurricane wave model web pages opened to public.

Validation pages for AKW and WNA model, and historical data archive added to web pages.

Shifted output location 42019 in WNA model from 95.0W to 95.4W after similar change in buoy location after buoy was redeployed by NDBC.

Compressed postscript graphics removed from web page (large resource sink, negligible usage).

Addtion of output points for Puerto Rico in WNA model, and for Brazilian coast in NWW3 model.

Extend forecast for all models to 126h, increase time resolution of GRIB files to 3h.

Bug fix for re-initializing wave field after prolonged calm (seeding algorithm). Reduction of bottom friction by factor 2 for NWW3 and AKW and by a factor 4 for WNA.

Wind field plots added to all views on web page.

OSO / SBN data transmision switched from old WAM models to new NWW3 models.

The old experimental web page has been shut down, and now is fully replaced by the present web page.

Spectral resolution of GDAS and AVN wind fields increased to T170.

IBM computer on which this model has been running accepted for operational use.

Added several Tropical Pacific output points to the global model, removed error in boundary data transfer to regional models.

No model results and/or validation results available . All models are temporarily shut down due to physical move of computer to new facility.

Western North Atlantic (WNA) regional model approved for operational implementation.

Present web pages made available to public.

Global and regional wave models (AKW, WNA) internally implemented on the IBM RS6000 SP.

Alaskan Waters (AKW) regional model approved for operational implementation.

Global model approved for operational implementation on new class VIII computer system.

Start of continuous forecasts with parallel version of the global model. Validation results for the global model are available from this date.