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<p>The <b>MITgcm</b> (<b>MIT</b> <b>G</b>eneral <b>C</b>irculation |
<p>The <b>MITgcm</b> (<b>MIT</b> <b>G</b>eneral <b>C</b>irculation |
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<b>M</b>odel) is a numerical model for |
<b>M</b>odel) is a numerical model designed for study of the |
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studying the ocean and atmosphere. It is capable of simulating these |
atmosphere, ocean, and climate. Its non-hydrostatic formulation |
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fluids at a wide range of scales and can resolve many different |
enables it to simulate fluid phenomena over a wide range of |
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processes. It has a non-hydrostatic capability (Marshall et al., JGR 1997a |
scales; its adjoint capability enables it to be applied to |
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& b) and uses the finite volume method to accurately represent the |
parameter and state estimation problems. By employing fluid |
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bottom boundary position (Adcroft et al., MWR 1998).<br /><br /></p> |
isomorphisms, one hydrodynamical kernel can be used to simulate |
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flow in both the atmosphere and ocean.</p> |
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<div class="c1"><span class="c3"><b>News</b></span></div> |
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<p>You are welcome to <a href="http://mitgcm.org/source_code.html"> |
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download</a> and use MITgcm.</p> |
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To add News items, please copy the following block outside these comments and |
<p>Papers charting the development of MITgcm <a |
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replace the ===DATE=== and ===MESSAGE=== place-holders with your date and your |
href="http://paoc.mit.edu/cmi/publications.htm">can be found here. |
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text: |
</a></p> |
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<p><b>===DATE=== :</b><br /></p> |
<hr align="center" size="1" width="75%" /> |
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<blockquote> |
<div class="c1"><br /><span class="c3"><b>News</b></span></div> |
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===MESSAGE===<br /><br /> |
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</blockquote> |
<!-- |
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To add News items, please copy the following block outside these comments |
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--> |
and replace the ===DATE=== and ===MESSAGE=== place-holders with your date |
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<p><b>December 9th 2003 :</b><br /></p> |
and your text: |
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<blockquote> |
<p><b>===DATE=== :</b></p> |
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The new continuous testing page at <a |
<blockquote> |
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href="http://mitgcm.org/testing.html"> |
===MESSAGE=== |
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http://mitgcm.org/testing.html</a> provides information on the status |
</blockquote> |
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of the latest development code. The page shows summary pass/fail |
--> |
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ratios for the MITgcm regression tests on various platforms. Details |
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on the platforms being tested and detailed information on the status |
<p><b>March 19, 2007 :</b></p> |
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of individual regression tests can be viewed from links on the test |
<blockquote> |
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page. <br /><br /> |
Breaking News: The MITgcm is now able to generate Sea-Ice Donuts. |
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</blockquote> |
In a push to move forward MITgcm on the path of fundamental science and climate |
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understanding, David Ferreira and Jean-Michel Campin |
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<p><b>October 27th 2003 :</b><br /></p> |
simulated a Sea-ice Donut using a coupled AquaPlanet configuration (see |
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movie <A href=movies/Sea_Ice_Donut_x1.mpg>here</A>). |
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<blockquote> |
This experiment was initialized with the T and S fields from |
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<b><a href="http://paoc.mit.edu/cmi/">MIT Climate Modeling Initiative |
a previous Aquaplanet run which has polar sea-ice caps. These |
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(CMI)</a></b> web pages introduce the MITgcm model, its |
caps are associated with salt-compensated temperature inversions in the upper |
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applications, and the development team.<br /><br /> |
ocean. The new run is initialized without sea-ice and within a month, large |
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</blockquote> |
sea-ice caps grow over the poles, rejecting salt. This triggers convection which |
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in turns brings relatively warm water to the surface and melts the ice close |
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<p><b>October 21st 2003 :</b><br /></p> |
to the poles. Here we have a <A href=movies/Sea_Ice_Donut_x1.mpg>donut</A>. |
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Look out for that chapter on aqua-planets in the next IPCC report! |
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<blockquote> |
</blockquote> |
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MITgcm and ECCO-JPL team <b><a |
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href="http://www.sgi.com/newsroom/press_releases/2003/october/linux.html"> |
<p><b>Feb 04, 2007 :</b></p> |
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feature as showcase application</a></b> in NASA-SGI large shared |
<blockquote> |
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memory system program.<br /><br /> |
News is back by popular request. New advection schemes are currently |
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</blockquote> |
being tested. Some preliminary results from the new schemes can be seen |
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<A href=news/advection_testing_jan07/advection_testing.html> |
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here. |
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</A> |
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The plots show a tracer being transported and stretched in the |
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MITgcm advect_xz verification test. Both new schemes (OS7MP |
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and Prather second-order scheme with limiting) have very low implied |
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diffusivity. |
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We are currently evaluating the |
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schemes to assess their implied diffusivity, with a bottle of |
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Jean-Michel's favorite Belgian |
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beer going to the the least diffusive scheme - watch this space! |
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</blockquote> |
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<p><b>March 9, 2005 :</b></p> |
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<blockquote> |
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A short article entitled |
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"NASA Supercomputer Improves Prospects for Ocean Climate Research" |
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in the current EOS (volume 86, number 9, March 1 2005) |
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gives a succinct overview of some of the advanced high-resolution |
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state-estimation work being undertaken with MITgcm by members |
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of the ECCO consortium. The article describes |
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ground-breaking computational |
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technologies that have enabled this work and outlines the future goals of |
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this next generation planetary scale assimilation initiative. A pdf containing |
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the article can be found |
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<a href="http://mitgcm.org/articles/EOSecco.pdf"> |
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here. |
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</a> |
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</blockquote> |
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<p><b>Sep 24, 2004 :</b></p> |
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<blockquote> |
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MITgcm is now able to write and (to a lesser extent) read NetCDF files. |
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The framework (the "MNC" package) has been tested by numerous developers |
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on literally dozens of machines and, for the past month, has been a |
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working part of our standard verification suite. We encourage MITgcm |
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users (especially new users) to try out the MNC package since the model |
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output is now much easier to read and understand. For further NetCDF |
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information please see: |
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<ul> |
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<li><a href="http://mitgcm.org/cmi_redir.php/package_mnc"> |
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Manual entry for the MNC package.</a></li> |
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<li>Directions <a |
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href="http://mitgcm.org/pipermail/mitgcm-support/2004-September/002589.html"> |
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from our email archives</a> and <a |
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href="http://mitgcm.org/mwiki/index.php/MNC_Package">from our |
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wiki</a> for installing NetCDF.</li> |
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<li>The <a |
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href="http://my.unidata.ucar.edu/content/software/netcdf/index.html"> |
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main NetCDF web site</a>.</li> |
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</ul> |
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</blockquote> |
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<p><b>May 20, 2004 at 05:01 EDT :</b></p> |
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<blockquote> |
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Congratulations to Ed and Boo on the birth this |
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morning of a 7lb 1oz, baby girl, |
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<a href="http://eddy.csail.mit.edu/gallery/Alex-Arrives">Alexandra Sophia</a>. |
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</blockquote> |
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<p><b>April 13, 2004 :</b></p> |
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<blockquote> |
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A new movie by Dimitris Menemenlis and Chris Henze shows ice dynamics |
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over the North Pole. The viscous-plastic behavior of ice sheets subject |
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to wind forcing and ocean currents can be clearly seen in the |
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translucent ice-sheet. The movie can be downloaded from <a |
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href="movies/ice_03.mpg"> here</a> (this one is 91MB!). A set of web |
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pages with summary information regarding MITgcm simulations being |
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carried out in the ECCO high resolution global ocean state estimation |
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initiative can be found <a href="http://ecco.jpl.nasa.gov/cube_sphere"> |
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here</a>. |
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</blockquote> |
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<p><b>March 26, 2004 at 01:38 EST :</b></p> |
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<blockquote> |
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Congratulations to Alistair and Sonya on the birth this |
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morning of a 7lb 3oz, 19.5 inches long baby girl, Ariane Jade. |
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</blockquote> |
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<p><b>January 22, 2004 :</b></p> |
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<blockquote> |
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A spectacular movie by Chris Henze of NASA AMES beautifully captures an |
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eddy permitting expanded cube sphere MITgcm simulation being carried out, |
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as part of the <a href="http://www.ecco-group.org">ECCO</a> project, by |
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Dimitris Menemenlis and others at JPL with help from core MITgcm team members |
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and staff from NASA AMES. The animation |
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shows the speed of ocean currents at 15m depth from the simulation, it can be |
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downloaded <a href=news/cube_6.mpg>here</a> (its 47MB |
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but worth waiting for!). A second animation with different perspectives and |
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rotation can be downloaded <a href=news/cube_7.mpg>here</a>. |
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As described <a href=news/agu_2004/menemenlis_et_al.pdf>here</a> Dimitris Menemenlis |
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will be presenting aspects of this calculation at AGU in Portland. |
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A list of some other AGU 2004 presentation abstracts related to MITgcm can be |
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found <a href=news/agu_2004>here</a>. |
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</blockquote> |
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</body> |
</body> |
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</html> |
</html> |
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