**Historical List of Atmosphere and Ocean Models at JNWPU/NMC/NCEP**

In compiling the list, there has been no intent to include the many
changes to individual models that have occurred through the years;
*e.g.* changes to numerics, physical processes, *etc*, as well as the
multitude of changes that have occurred in producing initial analyses
for the numerical models. There have been a number of other models, such
as the Coupled Ocean-Atmosphere Model (circa 1995), which have been run
routinely, but not as part of the \'operational suite\'. These are NOT
included either. Here, the intent is to show, in a chronological sense,
implementations of distinctively new operational models and, in some
instances, dates when forecast length has been increased to satisfy
other operational requirements. There is an attempt to record dates when
models went out of service, generally occurring when a new model was
implemented. However, there are exceptions (*e.g.* NGM continues to run
in support of MOS)! These will be noted as they are \'discovered\'! A
more detailed, highly informative, companion to these lists may be found
in a *Bulletin of the American Meteorological Society* paper,
co-authored by Kalnay, Lord and McPherson, entitled \'Maturity of
Operational Numerical Weather Prediction\', December 1998, p 2753.
Additional information regarding the \'early\' years may be found in NMC
Office Note 72, by Shuman, 1972, entitled \'The Research and Development
Program at the National Meteorological Center\'.

**JNWPU / NMC / NCEP Numerical Weather Prediction and Ocean Models
(1955-present)**

*Last changed 01/25/06*

<table>
<colgroup>
<col style="width: 6%" />
<col style="width: 6%" />
<col style="width: 13%" />
<col style="width: 10%" />
<col style="width: 5%" />
<col style="width: 10%" />
<col style="width: 9%" />
<col style="width: 10%" />
<col style="width: 10%" />
<col style="width: 7%" />
<col style="width: 4%" />
<col style="width: 4%" />
</colgroup>
<thead>
<tr class="header">
<th><h1 id="year"> Year </h1></th>
<th><strong>Type</strong></th>
<th><strong>Model</strong></th>
<th><p><strong>Horizontal</strong></p>
<p><strong>Resolution</strong></p></th>
<th><strong>Layers</strong></th>
<th><strong>Domain</strong></th>
<th><strong>Forecast length</strong></th>
<th><strong>Documentation</strong></th>
<th><strong>Computr</strong></th>
<th><strong>Bye</strong></th>
<th><strong>#/dy</strong></th>
<th></th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td>1955</td>
<td>R</td>
<td>Baroclinic</td>
<td>300 km</td>
<td>3</td>
<td>US</td>
<td>36 hrs</td>
<td>NAVAER</td>
<td>IBM701</td>
<td>10/57</td>
<td>1</td>
<td></td>
</tr>
<tr class="even">
<td>1955</td>
<td>R</td>
<td>Barotropic</td>
<td>600 km</td>
<td>1</td>
<td>N America+</td>
<td>72</td>
<td>“</td>
<td>“</td>
<td>10/57</td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>1956</td>
<td>R</td>
<td>Thermotropic</td>
<td>375 km</td>
<td>2</td>
<td>N America</td>
<td>36</td>
<td>“</td>
<td>“</td>
<td>10/57</td>
<td>1</td>
<td></td>
</tr>
<tr class="even">
<td>1957</td>
<td>H</td>
<td>Barotropic</td>
<td>381 km</td>
<td>1</td>
<td><p>NH Octagon</p>
<p>1977pts</p></td>
<td>72</td>
<td>JNWPUB #22</td>
<td>IBM704</td>
<td>6/93</td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1958</td>
<td>?</td>
<td>Baroclinic</td>
<td>?</td>
<td>2</td>
<td>“</td>
<td>36</td>
<td>JNWPUB #26</td>
<td>“</td>
<td>1/62</td>
<td>1</td>
<td></td>
</tr>
<tr class="even">
<td>1960</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td>IBM 7090</td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1962</td>
<td>H</td>
<td>Cressman filtered-equation</td>
<td>381 km</td>
<td>3</td>
<td>“</td>
<td>36</td>
<td><p>JNWPUB #34+NMC-TM22</p>
<p>(TPB105)</p></td>
<td><p>“</p>
<p>====</p></td>
<td><p>6/66</p>
<p>anl til Hough (1974)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1962</td>
<td></td>
<td>BarotropicEx</td>
<td>381 km</td>
<td>1</td>
<td>“</td>
<td>36-96</td>
<td></td>
<td>“</td>
<td>6/66</td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1962</td>
<td>H</td>
<td>Reed – Surface</td>
<td>381 km</td>
<td>2</td>
<td>“</td>
<td>36</td>
<td><p>NMC</p>
<p>-TM26</p></td>
<td>“</td>
<td>6/66</td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1963</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td>IBM 7094</td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1966</td>
<td>H</td>
<td>Primitive Equation (PE)</td>
<td>381 km</td>
<td>6</td>
<td>NH (53,57) points</td>
<td>36</td>
<td><p>Shuman,</p>
<p>Hovermale JAM,1968</p></td>
<td>CDC6600</td>
<td><p>8/80</p>
<p>(1/78)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1968</td>
<td>O+H</td>
<td>TDL’s Wave Model</td>
<td>381 km</td>
<td></td>
<td></td>
<td>36</td>
<td></td>
<td>“</td>
<td>‘86</td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1970</td>
<td>H</td>
<td>PE, Barotropic extension</td>
<td>381 km</td>
<td>1</td>
<td>NH</td>
<td>84-144</td>
<td></td>
<td>“</td>
<td><p>8/80</p>
<p>(1/78)</p></td>
<td>1</td>
<td></td>
</tr>
<tr class="even">
<td>1971</td>
<td>R</td>
<td>Limited-area Fine Mesh (LFM)</td>
<td>190.5 km</td>
<td>6</td>
<td>N America</td>
<td>24</td>
<td>TPB #67</td>
<td>“</td>
<td><p>2/96</p>
<p>(’75)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1972</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td><p>IBM</p>
<p>360-195</p></td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1974</td>
<td>G</td>
<td>PE</td>
<td>2.5 deg</td>
<td>8</td>
<td>Global</td>
<td>12 hr Final Analysis</td>
<td>TPB #115</td>
<td>“</td>
<td>‘76</td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1975</td>
<td>R</td>
<td>LFM</td>
<td>190.5 km</td>
<td>6</td>
<td>N America</td>
<td>36</td>
<td>TPB #129</td>
<td>“</td>
<td><p>2/96</p>
<p>(’76)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1976</td>
<td>R</td>
<td>LFM</td>
<td>“</td>
<td>6</td>
<td>“</td>
<td>48</td>
<td>TPB #162</td>
<td>“</td>
<td><p>2/96</p>
<p>(3/79)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1976</td>
<td>G</td>
<td>PE</td>
<td>2.5 deg</td>
<td>9</td>
<td>Global</td>
<td>12 hr Final Analysis</td>
<td>TPB #258</td>
<td>“</td>
<td>8/80</td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1977</td>
<td>G</td>
<td>PE</td>
<td>3.75 deg</td>
<td>3</td>
<td><p>Global to 48 hr</p>
<p>NH to252</p></td>
<td>252</td>
<td>TPB #215,#257</td>
<td>“</td>
<td>4/81</td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>1978</td>
<td>H</td>
<td>PE</td>
<td>190.5 km</td>
<td>7</td>
<td>NH (129,129) points</td>
<td>84</td>
<td>TPB #218</td>
<td>“</td>
<td>8/80</td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1978</td>
<td></td>
<td>Barotropic extension</td>
<td>?</td>
<td>1</td>
<td>NH</td>
<td>84-240</td>
<td>NMC Office Note 316</td>
<td>“</td>
<td>1/80</td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>1978</td>
<td>Hu</td>
<td>Moveable Fine Mesh</td>
<td>60 km</td>
<td>10</td>
<td>Window (50,50) points</td>
<td>48</td>
<td>TPB #259</td>
<td>“</td>
<td>‘88</td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1979</td>
<td>R</td>
<td>LFM-II</td>
<td>127 km</td>
<td>7</td>
<td>N America</td>
<td>48</td>
<td>TPB #255</td>
<td>“</td>
<td><p>2/96</p>
<p>(’81)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1980</td>
<td>H</td>
<td>PE extension using 4<sup>th</sup> order finite differencing</td>
<td>381 km</td>
<td>7</td>
<td>NH</td>
<td>60-144</td>
<td><p>TPB #272,#273</p>
<p>Office Note 316</p></td>
<td>“</td>
<td>8/80</td>
<td>1</td>
<td></td>
</tr>
<tr class="even">
<td>1980</td>
<td></td>
<td>Barotropic extension</td>
<td>?</td>
<td>1</td>
<td>NH</td>
<td>144-252</td>
<td>Office Note 316</td>
<td>“</td>
<td>8/80</td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>1980</td>
<td>G</td>
<td>Spectral</td>
<td>R30</td>
<td>12</td>
<td>Global</td>
<td>48</td>
<td>TPB #282</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’83)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1980</td>
<td>H</td>
<td>Spectral extension</td>
<td>R24</td>
<td>12</td>
<td>NH</td>
<td>48-144</td>
<td>Office Note 316</td>
<td>“</td>
<td>4/81</td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>1981</td>
<td>R</td>
<td>LFM-II 4<sup>th</sup> order</td>
<td>190.5 km</td>
<td>7</td>
<td>N America</td>
<td>48</td>
<td>TPB #300</td>
<td>“</td>
<td>2/96</td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1983</td>
<td>G</td>
<td>Spectral</td>
<td>R40</td>
<td>12</td>
<td>Global</td>
<td>240, 00Z</td>
<td></td>
<td>Cyber 205</td>
<td><h2 id="still">Still*</h2>
<p>(’85)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1985</td>
<td>G</td>
<td>Spectral</td>
<td>R40</td>
<td>18, 12 <strong>h2o</strong></td>
<td>Global</td>
<td><p>240,00Z</p>
<p>72,12Z</p></td>
<td>TPB #349</td>
<td>“</td>
<td><h2 id="still-1">Still*</h2>
<p>(’87)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1985</td>
<td>R</td>
<td>NGM</td>
<td>80 km</td>
<td>16</td>
<td>N America</td>
<td>48</td>
<td>TPB #345,#350</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1986</td>
<td>O+G</td>
<td>NOAA Ocean Wave (NOW)</td>
<td>2.5 deg</td>
<td>-</td>
<td>Global</td>
<td>72</td>
<td>TPB #364</td>
<td>“</td>
<td>10/94</td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1987</td>
<td>G</td>
<td>Spectral</td>
<td>T80</td>
<td>18</td>
<td>Global</td>
<td>240, 00Z</td>
<td></td>
<td>2<sup>nd</sup> C205</td>
<td><em><strong>Still*</strong></em> (’91)</td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1988</td>
<td>Hu</td>
<td>Quasi-Lagrangian Model(QLM)</td>
<td>40 km</td>
<td>10</td>
<td>Window (111,111) points</td>
<td>72</td>
<td>TPB #377</td>
<td>“</td>
<td>6/95</td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1990</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td>CrayYMP</td>
<td></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1991</td>
<td>G</td>
<td>Spectral</td>
<td>T126</td>
<td>18</td>
<td>Global</td>
<td>240, 00Z</td>
<td></td>
<td>“</td>
<td><h2 id="still-2">Still*</h2>
<p>(’93)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1992</td>
<td>E+G</td>
<td>ENSembles (ENS) - Spectral</td>
<td>T62</td>
<td>18</td>
<td>Global</td>
<td><p>240 :</p>
<p>3 mbrs</p></td>
<td>TPB #471</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’94)</p></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1993</td>
<td>R</td>
<td>ETA</td>
<td>80 km</td>
<td>38</td>
<td>N America+</td>
<td>48</td>
<td>TPB #412</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’95)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1993</td>
<td>G</td>
<td>Spectral</td>
<td>T126</td>
<td>28</td>
<td>Global</td>
<td>240, 00Z</td>
<td></td>
<td>“</td>
<td><h2 id="still-3">Still*</h2>
<p>(’00)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1994</td>
<td>R</td>
<td>Rapid Update Cycle (RUC)</td>
<td>60 km</td>
<td>25</td>
<td>CONUS+</td>
<td>12,evry3</td>
<td>TPB #416,#429</td>
<td>Cray C90</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’98)</p></td>
<td>8</td>
<td></td>
</tr>
<tr class="even">
<td>1994</td>
<td>O+G</td>
<td>WAM</td>
<td>2.5 deg</td>
<td>1</td>
<td>Global</td>
<td>72</td>
<td>TPB #426</td>
<td>“</td>
<td>3/00</td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1994</td>
<td>E+G</td>
<td>ENS-Spectral</td>
<td>T62</td>
<td>18</td>
<td>Global</td>
<td>384 hrs: 17 mbrs</td>
<td></td>
<td>“</td>
<td><h2 id="still-4">Still*</h2>
<p>(’00)</p></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1995</td>
<td>Hu</td>
<td>GFDL multi-nest</td>
<td>Atmosphr3 nests: 1, 1/3,1/6 dg</td>
<td>18</td>
<td>Window</td>
<td>78</td>
<td>TPB #424</td>
<td>“</td>
<td>6/01</td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>1995</td>
<td>R</td>
<td>Meso-ETA</td>
<td>29 km</td>
<td>50</td>
<td>N America+</td>
<td>33 at 3Z and 15Z</td>
<td></td>
<td>“</td>
<td>6/98</td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>1995</td>
<td>R</td>
<td>ETA</td>
<td>48 km</td>
<td>38</td>
<td>“</td>
<td>48</td>
<td></td>
<td>“</td>
<td><h2 id="still-5">Still*</h2>
<p>(’98)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>1997</td>
<td>R</td>
<td>RSM</td>
<td>10 km (20N)</td>
<td>28</td>
<td>Hawaii</td>
<td>48</td>
<td>TPB #444</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>1997</td>
<td>O+R</td>
<td>Sea-Ice Drift</td>
<td>List of ice-line points</td>
<td></td>
<td>Arctic, Antarctic</td>
<td>384</td>
<td>TPB #435</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>1998</td>
<td>R</td>
<td>ETA</td>
<td>32 km</td>
<td>45</td>
<td>N America+</td>
<td>48 (60 in Mar 00)</td>
<td><p>3Z – 33hrs</p>
<p>18Z-30hrs</p></td>
<td>“</td>
<td><h2 id="still-6">Still*</h2>
<p>(’99)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>1998</td>
<td>R</td>
<td>RUC</td>
<td>40 km</td>
<td>40</td>
<td>CONUS+</td>
<td>12,evry3 3,every1</td>
<td></td>
<td>“</td>
<td><h2 id="still-7">Still*</h2>
<p>(’02)</p></td>
<td>24</td>
<td></td>
</tr>
<tr class="odd">
<td>1999</td>
<td>R</td>
<td>ETA</td>
<td>32 km</td>
<td>45</td>
<td>N America+</td>
<td>48–0, 6, 12, 18Z</td>
<td></td>
<td>IBM-class8, phase 1</td>
<td><h2 id="still-8">Still*</h2>
<p>(’00)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2000</td>
<td>G</td>
<td>Spectral</td>
<td>T170/62</td>
<td>42/28</td>
<td>Global</td>
<td><p>384@0Z</p>
<p>84@6Z,12Z,18Z</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-9">Still*</h2>
<p>(3/02)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>2000</td>
<td>E+G</td>
<td>ENS-Spectral</td>
<td><p>T126</p>
<p>T62</p></td>
<td><p>28</p>
<p>18</p></td>
<td>Global</td>
<td><p>0-84</p>
<p>84-384:</p>
<p>23 mbrs</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-10">Still*</h2>
<p>(’04)</p></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2000</td>
<td>O+G</td>
<td>NOAA Wave Watch III</td>
<td>1.0 x 1.25 deg</td>
<td>1</td>
<td>Global</td>
<td><p>72 (orig)</p>
<p>then 126</p></td>
<td>TPB #453</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>2000</td>
<td>R</td>
<td>ETA</td>
<td>22 km</td>
<td>50</td>
<td>N America+</td>
<td>60 (84 in Mar 01)</td>
<td>48 hrs for 6 and 18Z</td>
<td>“</td>
<td><h2 id="still-11">Still*</h2>
<p>(’02)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2000</td>
<td>O+R</td>
<td>W. North Atlantic Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Atlantic</td>
<td><p>72 (orig)</p>
<p>then 126</p></td>
<td>TPB #459</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>2000</td>
<td>O+R</td>
<td>Alaska Wave</td>
<td>.50 x .25 deg</td>
<td>1</td>
<td>Alaskan Waters</td>
<td><p>72 (orig)</p>
<p>then 126</p></td>
<td>TPB #456</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>2001</td>
<td>Hu</td>
<td>GFDL/URI coupled</td>
<td><p>Atmos=</p>
<p>3 nests!</p>
<p>Ocean = 1/6 deg</p></td>
<td><p>A=18,</p>
<p>O= 23</p></td>
<td>Window</td>
<td>126</td>
<td>TPB #472b</td>
<td>IBM–class8, phase2</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>2001</td>
<td>O+R</td>
<td>N. Atlantic Hurricane Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Atlantic</td>
<td>72</td>
<td>TPB #478</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>2001</td>
<td>G+E</td>
<td><p>Seasonal Forecast Model</p>
<p>(SFM)</p></td>
<td>T62</td>
<td>28</td>
<td>Global</td>
<td><p>7 month:</p>
<p>20 mbrs</p></td>
<td>TPB #480</td>
<td>“</td>
<td>8/04</td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2001</td>
<td>E+R</td>
<td>Short-Range ENS forecast (SREF) –</td>
<td>48 km</td>
<td>(45-28)</td>
<td>N America</td>
<td><p>63:</p>
<p>15 mbrs</p></td>
<td></td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’05)</p></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2001</td>
<td>R</td>
<td>Hi-Res window (Eta)</td>
<td>10 km</td>
<td>50</td>
<td>1/3 CONUS; 6 nests/da</td>
<td>48</td>
<td></td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>2002</td>
<td>O+R</td>
<td>Princeton Ocean Model(POM)</td>
<td>Variable 10-20 km</td>
<td>19</td>
<td>Ocean off Eastern N America</td>
<td>48</td>
<td>TPB #489</td>
<td>“</td>
<td>12/05</td>
<td>1</td>
<td></td>
</tr>
<tr class="even">
<td>2002</td>
<td>O+R</td>
<td>E. North Pacific Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>East Pacific</td>
<td>126</td>
<td>TPB #491</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’03)</p></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>2002</td>
<td>G</td>
<td>Spectral</td>
<td>T170/62</td>
<td>42/28</td>
<td>Global</td>
<td>384: 4 times/dy</td>
<td></td>
<td>“</td>
<td><h2 id="still-12">Still*</h2>
<p>10/02</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2002</td>
<td>G</td>
<td>Spectral <em>aka</em> GFS (Global Fcst System)</td>
<td>T254/170/126</td>
<td>64/42/28</td>
<td>Global</td>
<td>“</td>
<td></td>
<td>“</td>
<td><h2 id="still-13">Still*</h2>
<p>5/05</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>2002</td>
<td>R</td>
<td>ETA, <em>aka</em> NAM</td>
<td>12 km</td>
<td>60</td>
<td>N America+</td>
<td>84</td>
<td></td>
<td>“</td>
<td><h2 id="still-14">Still*</h2></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2002</td>
<td>R</td>
<td>RUC</td>
<td>20 km</td>
<td>50</td>
<td>CONUS+</td>
<td><p>12,evry3</p>
<p>3,every1</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-15">Still*</h2>
<p>(’05)</p></td>
<td>24</td>
<td></td>
</tr>
<tr class="odd">
<td>2003</td>
<td><p>R+</p>
<p>NHy</p></td>
<td>Hi-Res Window (non-hydrostatic mesoscale)</td>
<td>8 km</td>
<td>60</td>
<td><p>1/3 CONUS:</p>
<p>use one of 6 diff domains</p></td>
<td>48</td>
<td></td>
<td><p>IBM-class9, phase 1:</p>
<p>frost/snow</p></td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’05)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2003</td>
<td><p>R+</p>
<p>NHy</p></td>
<td><p>Fire Weather (non-hydro,</p>
<p>mesoscale)</p></td>
<td>8 km</td>
<td>60</td>
<td><p>SDM gets</p>
<p>¼ Hi-Res Window</p></td>
<td>48</td>
<td></td>
<td>“</td>
<td><h2 id="still-16">Still*</h2></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>2003</td>
<td>Hu</td>
<td>GFDL/URI coupled</td>
<td><p>Atmos=</p>
<p>2 nests; 33/18 km;</p>
<p>Ocean = 1/6 deg</p></td>
<td><p>A=42,</p>
<p>O= 23</p></td>
<td>Window; 75x75 deg</td>
<td>126</td>
<td></td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’05)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2003</td>
<td>O+R</td>
<td>N. Atlantic Hurricane Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Atlantic</td>
<td>72</td>
<td>TPB #478</td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’05)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>2003</td>
<td>O+R</td>
<td>N. Pacific Hurricane Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Pacific</td>
<td>72</td>
<td><p>TPB MMAB</p>
<p>/2004-03</p></td>
<td>“</td>
<td><p><em><strong>Still*</strong></em></p>
<p>(’05)</p></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>20032004</td>
<td>O+G</td>
<td>NOAA Wave Watch III</td>
<td>1.0 x 1.25 deg</td>
<td>1</td>
<td>Global</td>
<td><p>168(’03)</p>
<p>180(’04)</p></td>
<td>TPB #494</td>
<td>“</td>
<td><h2 id="still-17">Still*</h2></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>20032004</td>
<td>O+R</td>
<td>W. North Atlantic Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Atlantic</td>
<td>168(’03)180(’04)</td>
<td>TPB #495</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>20032004</td>
<td>O+R</td>
<td>Alaska Wave</td>
<td>.50 x .25 deg</td>
<td>1</td>
<td>Alaskan Waters</td>
<td>168(’03)180(’04)</td>
<td>TPB #496</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>20032004</td>
<td>O+R</td>
<td>E. North Pacific Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>East Pacific</td>
<td>168(’03)180(’04)</td>
<td>TPB #491</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2004</td>
<td>E+G</td>
<td>ENS-Spectral</td>
<td><p>T126</p>
<p>T62</p></td>
<td>28</td>
<td>Global</td>
<td><p>0-180,</p>
<p>180-384:</p>
<p>45 mbrs</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-18">Still*</h2>
<p>8/05</p></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2004</td>
<td>R</td>
<td>Downscaled GFS with Eta extension (DGEX)</td>
<td>12 km</td>
<td>60</td>
<td>CONUS+Alaska</td>
<td>84-192 extenson</td>
<td></td>
<td>“</td>
<td><h2 id="still-19">Still*</h2></td>
<td>2</td>
<td></td>
</tr>
<tr class="even">
<td>2004</td>
<td>G+E</td>
<td>Climate Forecast System: CFS, replaces SFM</td>
<td>T62</td>
<td>64</td>
<td>Global</td>
<td><p>9-10 months:</p>
<p>60 mbrs</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-20">Still*</h2></td>
<td>2</td>
<td></td>
</tr>
<tr class="odd">
<td>2005</td>
<td>E+R</td>
<td>SREF</td>
<td>Variable 32-48 km</td>
<td>(60-28)</td>
<td>N America</td>
<td><p>87:</p>
<p>15 mbrs</p></td>
<td></td>
<td><p>IBM-class9, phase2:</p>
<p>blue/white</p></td>
<td><h2 id="still-21">Still*</h2></td>
<td></td>
<td></td>
</tr>
<tr class="even">
<td>2005</td>
<td>O+R</td>
<td>N. Atlantic Hurricane Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Atlantic</td>
<td>126</td>
<td>TPB #478</td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>4</td>
<td></td>
</tr>
<tr class="odd">
<td>2005</td>
<td>O+R</td>
<td>N. Pacific Hurricane Wave</td>
<td>.25 x .25 deg</td>
<td>1</td>
<td>North Pacific</td>
<td>126</td>
<td><p>TPB MMAB</p>
<p>/2004-03</p></td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2005</td>
<td>O+R</td>
<td>RTOFS_Atl, HYCOM, replace POM</td>
<td>Variable 4-15 km</td>
<td>26</td>
<td>20S-70N Atlantic Ocean</td>
<td>120 at 00 UTC</td>
<td><p>Being</p>
<p>Prepared</p></td>
<td>“</td>
<td><h2 id="still-22">Still*</h2></td>
<td>1</td>
<td></td>
</tr>
<tr class="odd">
<td>2005</td>
<td>G</td>
<td>GFS (spectral)</td>
<td>T382/190/</td>
<td>64</td>
<td>Global</td>
<td>384: 4 times/dy</td>
<td>Informal EMC <em>tpb</em></td>
<td>“</td>
<td><h2 id="still-23">Still*</h2></td>
<td>4</td>
<td></td>
</tr>
<tr class="even">
<td>2005</td>
<td>R</td>
<td>RUC</td>
<td>13 km</td>
<td>50</td>
<td>CONUS</td>
<td><p>12,evry3</p>
<p>9,every1</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-24">Still*</h2></td>
<td>24</td>
<td></td>
</tr>
<tr class="odd">
<td>2005</td>
<td><p>R+</p>
<p>NHy</p></td>
<td><p>Hi-Res Window:</p>
<p>WRF cores (nmm,arw)</p></td>
<td>5 km</td>
<td>35</td>
<td>1/3 CONUS+Alaska; 6 domains</td>
<td>48</td>
<td></td>
<td>“</td>
<td><h2 id="still-25">Still*</h2></td>
<td><p>1/ea</p>
<p>regn</p></td>
<td></td>
</tr>
<tr class="even">
<td>2005</td>
<td>E+G</td>
<td>ENS-Spectral</td>
<td>T126</td>
<td>28</td>
<td>Global</td>
<td><p>0-384:</p>
<p>45 mbrs</p></td>
<td></td>
<td>“</td>
<td><h2 id="still-26">Still*</h2></td>
<td></td>
<td></td>
</tr>
<tr class="odd">
<td>2005</td>
<td>Hu</td>
<td>GFDL/URI coupled</td>
<td><p>Atmos=</p>
<p>3 nests; 33,18,8kOcean = 1/6 deg</p></td>
<td><p>A=42,</p>
<p>O= 23</p></td>
<td>Window; 75x75 deg</td>
<td>126</td>
<td></td>
<td>“</td>
<td><em><strong>Still*</strong></em></td>
<td>4</td>
<td></td>
</tr>
</tbody>
</table>

## NOTES: 

## Bye = approximate date of model retirement

(mm,yy) or ('yy) is date that this version was retired!

##  Still\* = an operational version is still running in 2005

(mm,yy) or ('yy) is date that this version was retired!

#/**dy** = number of operational runs per day

**Contact** for information or corrections -- Kenneth Campana, NCEP/EMC

Email address: <kenneth.campana@noaa.gov>

**Reference Information** --

Bonner, W.D., 1989: NMC overview: recent progress and future plans,
*Weather and Forecasting*, 4, 275-285.

Kalnay, E., Lord, S.J. and R.D. McPherson, 1998: Maturity of operational
numerical weather prediction: medium range, *Bulletin of the American
Meteorological Society*, 79, 2753-2769.

Shuman, F.G., 1972: The research and development program at the National
Meteorological Center, *NMC Office Note* 72, 19 pages.

Shuman, F.G., 1989: History of numerical weather prediction at the
National Meteorological Center, *Weather and Forecasting*, 4, 286-296.

*Special Thanks* to current and former members of NMC/NCEP, in
alphabetical order: Thomas Black, Lawrence Burroughs, Kenneth Campana,
Geoffrey DiMego, Francis Hughes (Office Note 316), Robert Kistler,
Timothy Marchok, George VanDenberghe, Yuejian Zhu.

**Type** -

H = Hemispheric

G = Global

R = Regional

Hu = Hurricane

O = Ocean

E = Ensembles

NHy = Non-Hydrostatic

**Documentation** -

NAVAER = Numerical Weather Prediction, NAVAER 50-1P-541,

June 1956, published by direction of the Chief of Naval Operations

JNWPUB = Joint NWP Unit Bulletins (38 of them from 1955-1967),

some available from NOAA Library, Silver Spring, MD.

NMC-TM = National Meteorological Center Technical Memorandum,

> available from NOAA Central Library, 1315 East-West Highway, SSMC3,
> Silver Spring, MD 20910.

JAM = Journal of Applied Meteorology

NCEP Office Notes :

> available from National Centers for Environmental Prediction, Office
> of the Director, 5200 Auth Road, Camp Springs, MD 20746, OR

see http://wwwt.emc.ncep.noaa.gov/officenotes

TPB = NWS Technical Procedures Bulletins (continuation of the JNWPU

Bulletins), 1967+, available from NOAA Central Library,

> Silver Spring, MD, or Office of Services, NOAA/NWS,
>
> 1325 East-West Highway, Silver Spring, MD 20910.
>
> Some available on-line, see:
>
> <http://www.nws.noaa.gov/om/tpbpr.shtml>