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    <p>The <b>MITgcm</b> (<b>MIT</b> <b>G</b>eneral <b>C</b>irculation
      <b>M</b>odel) is a numerical model designed for study of the
      atmosphere, ocean, and climate. Its non-hydrostatic formulation
      enables it to simulate fluid phenomena over a wide range of
      scales; its adjoint capability enables it to be applied to
      parameter and state estimation problems. By employing fluid
      isomorphisms, one hydrodynamical kernel can be used to simulate
      flow in both the atmosphere and ocean.</p>

    <p>You are welcome to <a href="http://mitgcm.org/source_code.html">
      download</a> and use MITgcm.</p>

    <p>Papers charting the development of MITgcm <a
      href="http://paoc.mit.edu/cmi/publications.htm">can be found here.
      </a></p>

    <hr align="center" size="1" width="75%" />

    <div class="c1"><br /><span class="c3"><b>News</b></span></div>
      
      <!--
      To add News items, please copy the following block outside these comments
      and replace the ===DATE=== and ===MESSAGE=== place-holders with your date
      and your text:
      
      <p><b>===DATE===&nbsp;:</b></p>
      <blockquote>
      ===MESSAGE===
      </blockquote>
      -->

      <p><b>March 19, 2007&nbsp;:</b></p>
      <blockquote>
      Breaking News:  The MITgcm is now able to generate Sea-Ice Donuts.
      In a push to move forward MITgcm on the path of fundamental science and climate
      understanding, David Ferreira and Jean-Michel Campin
      simulated a Sea-ice Donut using a coupled AquaPlanet configuration (see
      movie <A href=movies/Sea_Ice_Donut_x1.mpg>here</A>). 
      This experiment was initialized with  the T and S fields from
      a previous Aquaplanet run which has polar sea-ice caps. These
      caps are associated with salt-compensated temperature inversions in the upper
      ocean. The new run is initialized without sea-ice and within a month, large
      sea-ice caps grow over the poles, rejecting salt. This triggers convection which
      in turns brings relatively warm water to the surface and melts the ice close
      to the poles. Here we have a <A href=movies/Sea_Ice_Donut_x1.mpg>donut</A>. 
      Look out for that chapter on aqua-planets in the next IPCC report!
      </blockquote>

      <p><b>Feb 04, 2007&nbsp;:</b></p>
      <blockquote>
       News is back by popular request. New advection schemes are currently
       being tested. Some preliminary results from the new schemes can be seen 
       <A href=news/advection_testing_jan07/advection_testing.html>
       here.
       </A>
       The plots show a tracer being transported and stretched in the
       MITgcm advect_xz verification test. Both new schemes (OS7MP
       and Prather second-order scheme with limiting) have very low implied 
       diffusivity.
       We are currently evaluating the
       schemes to assess their implied diffusivity, with a bottle of 
       Jean-Michel's favorite Belgian
       beer going to the the least diffusive scheme - watch this space!
      </blockquote>

      <p><b>March 9, 2005&nbsp;:</b></p>
      <blockquote>
       A short article entitled 
       "NASA Supercomputer Improves Prospects for Ocean Climate Research"
       in the current EOS (volume 86, number 9, March 1 2005)
       gives a succinct overview of some of the advanced high-resolution
       state-estimation work being undertaken with MITgcm by members 
       of the ECCO consortium. The article describes 
       ground-breaking computational
       technologies that have enabled this work and outlines the future goals of
       this next generation planetary scale assimilation initiative. A pdf containing 
       the article can be found 
       <a href="http://mitgcm.org/articles/EOSecco.pdf">
       here.
       </a>
      </blockquote>
      
      <p><b>Sep 24, 2004&nbsp;:</b></p>
      <blockquote>
        MITgcm is now able to write and (to a lesser extent) read NetCDF files.
        The framework (the "MNC" package) has been tested by numerous developers
        on literally dozens of machines and, for the past month, has been a
        working part of our standard verification suite.  We encourage MITgcm
        users (especially new users) to try out the MNC package since the model
        output is now much easier to read and understand.  For further NetCDF
        information please see:
        <ul>
          <li><a href="http://mitgcm.org/cmi_redir.php/package_mnc">
              Manual entry for the MNC package.</a></li>
          <li>Directions <a 
              href="http://mitgcm.org/pipermail/mitgcm-support/2004-September/002589.html">
              from our email archives</a> and <a 
              href="http://mitgcm.org/mwiki/index.php/MNC_Package">from our 
              wiki</a> for installing NetCDF.</li>
          <li>The <a
              href="http://my.unidata.ucar.edu/content/software/netcdf/index.html">
              main NetCDF web site</a>.</li>
        </ul>
       </blockquote>
      
      <p><b>May 20, 2004 at 05:01 EDT&nbsp;:</b></p>
      <blockquote>
        Congratulations to Ed and Boo on the birth this
        morning of a 7lb 1oz, baby girl, 
        <a href="http://eddy.csail.mit.edu/gallery/Alex-Arrives">Alexandra Sophia</a>.
      </blockquote>
      
      <p><b>April 13, 2004&nbsp;:</b></p>
      <blockquote>
        A new movie by Dimitris Menemenlis and Chris Henze shows ice dynamics
        over the North Pole. The viscous-plastic behavior of ice sheets subject
        to wind forcing and ocean currents can be clearly seen in the
        translucent ice-sheet. The movie can be downloaded from <a
        href="movies/ice_03.mpg"> here</a> (this one is 91MB!).  A set of web
        pages with summary information regarding MITgcm simulations being
        carried out in the ECCO high resolution global ocean state estimation
        initiative can be found <a href="http://ecco.jpl.nasa.gov/cube_sphere">
          here</a>.
      </blockquote>

      <p><b>March 26, 2004 at 01:38 EST&nbsp;:</b></p>
      <blockquote>
        Congratulations to Alistair and Sonya on the birth this
        morning of a 7lb 3oz, 19.5 inches long baby girl, Ariane Jade.
      </blockquote>

      <p><b>January 22, 2004&nbsp;:</b></p>
      <blockquote>
        A spectacular movie by Chris Henze of NASA AMES beautifully captures an 
        eddy permitting expanded cube sphere MITgcm simulation being carried out, 
        as part of the <a href="http://www.ecco-group.org">ECCO</a> project, by 
        Dimitris Menemenlis and others at JPL with help from core MITgcm team members 
        and staff from NASA AMES. The animation 
        shows the speed of ocean currents at 15m depth from the simulation, it can be 
        downloaded <a href=news/cube_6.mpg>here</a> (its 47MB 
        but worth waiting for!). A second animation with different perspectives and 
        rotation can be downloaded <a href=news/cube_7.mpg>here</a>.
        As described <a href=news/agu_2004/menemenlis_et_al.pdf>here</a> Dimitris Menemenlis
        will be presenting aspects of this calculation at AGU in Portland.
        A list of some other AGU 2004 presentation abstracts related to MITgcm can be
        found <a href=news/agu_2004>here</a>.
      </blockquote>
            
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24
25	edhill	1.11	<p>The <b>MITgcm</b> (<b>MIT</b> <b>G</b>eneral <b>C</b>irculation
26			<b>M</b>odel) is a numerical model designed for study of the
27			atmosphere, ocean, and climate. Its non-hydrostatic formulation
28			enables it to simulate fluid phenomena over a wide range of
29			scales; its adjoint capability enables it to be applied to
30			parameter and state estimation problems. By employing fluid
31			isomorphisms, one hydrodynamical kernel can be used to simulate
32			flow in both the atmosphere and ocean.</p>
33	edhill	1.1
34	edhill	1.11	<p>You are welcome to <a href="http://mitgcm.org/source_code.html">
35			download</a> and use MITgcm.</p>
36
37			<p>Papers charting the development of MITgcm <a
38			href="http://paoc.mit.edu/cmi/publications.htm">can be found here.
39			</a></p>
40
41			<hr align="center" size="1" width="75%" />
42
43			<div class="c1"><br /><span class="c3"><b>News</b></span></div>
44	edhill	1.23
45	edhill	1.17	<!--
46			To add News items, please copy the following block outside these comments
47			and replace the ===DATE=== and ===MESSAGE=== place-holders with your date
48			and your text:
49	edhill	1.23
50			<p><b>===DATE=== :</b></p>
51			<blockquote>
52			===MESSAGE===
53			</blockquote>
54	edhill	1.17	-->
55	cnh	1.25
56	cnh	1.27	<p><b>March 19, 2007 :</b></p>
57			<blockquote>
58	cnh	1.28	Breaking News: The MITgcm is now able to generate Sea-Ice Donuts.
59	cnh	1.27	In a push to move forward MITgcm on the path of fundamental science and climate
60			understanding, David Ferreira and Jean-Michel Campin
61			simulated a Sea-ice Donut using a coupled AquaPlanet configuration (see
62			movie <A href=movies/Sea_Ice_Donut_x1.mpg>here</A>).
63			This experiment was initialized with the T and S fields from
64			a previous Aquaplanet run which has polar sea-ice caps. These
65			caps are associated with salt-compensated temperature inversions in the upper
66			ocean. The new run is initialized without sea-ice and within a month, large
67			sea-ice caps grow over the poles, rejecting salt. This triggers convection which
68			in turns brings relatively warm water to the surface and melts the ice close
69			to the poles. Here we have a <A href=movies/Sea_Ice_Donut_x1.mpg>donut</A>.
70			Look out for that chapter on aqua-planets in the next IPCC report!
71			</blockquote>
72
73	cnh	1.26	<p><b>Feb 04, 2007 :</b></p>
74			<blockquote>
75			News is back by popular request. New advection schemes are currently
76			being tested. Some preliminary results from the new schemes can be seen
77			<A href=news/advection_testing_jan07/advection_testing.html>
78			here.
79			</A>
80			The plots show a tracer being transported and stretched in the
81			MITgcm advect_xz verification test. Both new schemes (OS7MP
82			and Prather second-order scheme with limiting) have very low implied
83			diffusivity.
84			We are currently evaluating the
85			schemes to assess their implied diffusivity, with a bottle of
86			Jean-Michel's favorite Belgian
87			beer going to the the least diffusive scheme - watch this space!
88			</blockquote>
89
90	cnh	1.25	<p><b>March 9, 2005 :</b></p>
91			<blockquote>
92			A short article entitled
93			"NASA Supercomputer Improves Prospects for Ocean Climate Research"
94			in the current EOS (volume 86, number 9, March 1 2005)
95			gives a succinct overview of some of the advanced high-resolution
96			state-estimation work being undertaken with MITgcm by members
97			of the ECCO consortium. The article describes
98			ground-breaking computational
99			technologies that have enabled this work and outlines the future goals of
100			this next generation planetary scale assimilation initiative. A pdf containing
101			the article can be found
102			<a href="http://mitgcm.org/articles/EOSecco.pdf">
103			here.
104			</a>
105			</blockquote>
106	edhill	1.23
107			<p><b>Sep 24, 2004 :</b></p>
108	edhill	1.20	<blockquote>
109			MITgcm is now able to write and (to a lesser extent) read NetCDF files.
110			The framework (the "MNC" package) has been tested by numerous developers
111			on literally dozens of machines and, for the past month, has been a
112	edhill	1.22	working part of our standard verification suite. We encourage MITgcm
113			users (especially new users) to try out the MNC package since the model
114			output is now much easier to read and understand. For further NetCDF
115			information please see:
116	edhill	1.20	<ul>
117	edhill	1.24	<li><a href="http://mitgcm.org/cmi_redir.php/package_mnc">
118	edhill	1.23	Manual entry for the MNC package.</a></li>
119	edhill	1.24	<li>Directions <a
120	edhill	1.22	href="http://mitgcm.org/pipermail/mitgcm-support/2004-September/002589.html">
121	edhill	1.24	from our email archives</a> and <a
122			href="http://mitgcm.org/mwiki/index.php/MNC_Package">from our
123			wiki</a> for installing NetCDF.</li>
124	edhill	1.22	<li>The <a
125	edhill	1.23	href="http://my.unidata.ucar.edu/content/software/netcdf/index.html">
126	edhill	1.22	main NetCDF web site</a>.</li>
127	edhill	1.20	</ul>
128	cnh	1.25	</blockquote>
129	edhill	1.23
130			<p><b>May 20, 2004 at 05:01 EDT :</b></p>
131	cnh	1.18	<blockquote>
132			Congratulations to Ed and Boo on the birth this
133	edhill	1.19	morning of a 7lb 1oz, baby girl,
134			<a href="http://eddy.csail.mit.edu/gallery/Alex-Arrives">Alexandra Sophia</a>.
135	cnh	1.18	</blockquote>
136	edhill	1.17
137	edhill	1.23	<p><b>April 13, 2004 :</b></p>
138	edhill	1.17	<blockquote>
139			A new movie by Dimitris Menemenlis and Chris Henze shows ice dynamics
140			over the North Pole. The viscous-plastic behavior of ice sheets subject
141			to wind forcing and ocean currents can be clearly seen in the
142			translucent ice-sheet. The movie can be downloaded from <a
143			href="movies/ice_03.mpg"> here</a> (this one is 91MB!). A set of web
144			pages with summary information regarding MITgcm simulations being
145			carried out in the ECCO high resolution global ocean state estimation
146			initiative can be found <a href="http://ecco.jpl.nasa.gov/cube_sphere">
147	edhill	1.23	here</a>.
148	edhill	1.17	</blockquote>
149	cnh	1.12
150	edhill	1.23	<p><b>March 26, 2004 at 01:38 EST :</b></p>
151	cnh	1.15	<blockquote>
152	edhill	1.17	Congratulations to Alistair and Sonya on the birth this
153			morning of a 7lb 3oz, 19.5 inches long baby girl, Ariane Jade.
154	cnh	1.15	</blockquote>
155	cnh	1.12
156	edhill	1.23	<p><b>January 22, 2004 :</b></p>
157			<blockquote>
158			A spectacular movie by Chris Henze of NASA AMES beautifully captures an
159			eddy permitting expanded cube sphere MITgcm simulation being carried out,
160			as part of the <a href="http://www.ecco-group.org">ECCO</a> project, by
161			Dimitris Menemenlis and others at JPL with help from core MITgcm team members
162			and staff from NASA AMES. The animation
163			shows the speed of ocean currents at 15m depth from the simulation, it can be
164			downloaded <a href=news/cube_6.mpg>here</a> (its 47MB
165			but worth waiting for!). A second animation with different perspectives and
166			rotation can be downloaded <a href=news/cube_7.mpg>here</a>.
167			As described <a href=news/agu_2004/menemenlis_et_al.pdf>here</a> Dimitris Menemenlis
168			will be presenting aspects of this calculation at AGU in Portland.
169			A list of some other AGU 2004 presentation abstracts related to MITgcm can be
170			found <a href=news/agu_2004>here</a>.
171			</blockquote>
172
173	edhill	1.1	</body>
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