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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	<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
34	<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
45	<!--
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
50	<p><b>===DATE=== :</b></p>
51	<blockquote>
52	===MESSAGE===
53	</blockquote>
54	-->
55
56	<p><b>March 19, 2007 :</b></p>
57	<blockquote>
58	Breaking News: The MITgcm is now able to generate Sea-Ice Donuts
59	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	<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	<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
107	<p><b>Sep 24, 2004 :</b></p>
108	<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	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	<ul>
117	<li><a href="http://mitgcm.org/cmi_redir.php/package_mnc">
118	Manual entry for the MNC package.</a></li>
119	<li>Directions <a
120	href="http://mitgcm.org/pipermail/mitgcm-support/2004-September/002589.html">
121	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	<li>The <a
125	href="http://my.unidata.ucar.edu/content/software/netcdf/index.html">
126	main NetCDF web site</a>.</li>
127	</ul>
128	</blockquote>
129
130	<p><b>May 20, 2004 at 05:01 EDT :</b></p>
131	<blockquote>
132	Congratulations to Ed and Boo on the birth this
133	morning of a 7lb 1oz, baby girl,
134	<a href="http://eddy.csail.mit.edu/gallery/Alex-Arrives">Alexandra Sophia</a>.
135	</blockquote>
136
137	<p><b>April 13, 2004 :</b></p>
138	<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	here</a>.
148	</blockquote>
149
150	<p><b>March 26, 2004 at 01:38 EST :</b></p>
151	<blockquote>
152	Congratulations to Alistair and Sonya on the birth this
153	morning of a 7lb 3oz, 19.5 inches long baby girl, Ariane Jade.
154	</blockquote>
155
156	<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
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