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Source code update

Tue, 05/20/2003 - 5:23am — srm
Hi, can anyone tell me if it's possible to have access to the last update (April) of source code (W2.f90 and W2_cvf.f90 files). And if possible, can it be done without a full model download from CE-QUAL-W2 web page? I have another question, what are the major differences between CE-QUAL-W2 and CE-QUAL-ICM? Thank's and regards, Sandra [addsig]
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Installation
Wed, 05/28/2003 - 9:00am — sbwqm

CE-QUAL-W2 hydrodynamics and water quality CE-QUAL-ICM water quality For details, you can search them on yahoo.[addsig]
Wed, 05/28/2003 - 2:49pm — Tom

The website allows just updating the executable. Go to http://www.ce.pdx.edu/w2 and go down the page until you see where you can download just the executable. The major difference between W2 and ICM is that ICM contains only water quality and has no hydrodynamics. Therefore, you must provide advection and diffusion from some other hydrodynamic model saved as output that is then used to drive ICM. Also, ICM can be used as either a 1D, 2D laterally averaged, 2D vertically averaged, or fully 3D model depending upon the hydrodynamic model used. It also has a fully predictive sediment diagenesis model, but it is only appropriate for estuarine applications. Finally, ICM has been used primarily in estuarine applications with only one freswater application to Lake Washington in the Pacific Northwest. There are also a number of differences in the water quality capabilities between the two with each model having its strong and weak points. Tom[addsig]
Thu, 05/29/2003 - 5:13am — srm

[quote]The website allows just updating the executable. Go to http://www.ce.pdx.edu/w2 and go down the page until you see where you can download just the executable. I already updated the executable from that page. But is it possible to access the source code's latest version? And thank you for clearing things abaut W2 and ICM. Regards, Sandra[addsig]
Fri, 05/30/2003 - 2:44pm — Tom

You'll have to download the whole package again, which is probably not a bad idea.[addsig]
Mon, 03/14/2005 - 9:02am — srm

Hi Tom, Can you tell me if there is any bibliographical reference where it relates the main differences in the water quality capabilities between the W2 and ICM models? Best Regards, Sandra
Mon, 03/14/2005 - 12:52pm — Tom

There isn't a reference that lists the differences. You would need to get a copy of the ICM user's manual and compare with W2's manual. The biggest difference is the use of organic matter in W2 and carbon and organic N & P in ICM. I believe Carl has put in bacteria, zooplankton, and macrophytes in ICM as well, but I don't know if these capabilities are in the release version. We have versions of W2 with zooplankton and macrophytes and these will be merged into the official release version in time for the next workshop. Another big difference between the two models is that Carl doesn't really care if the model can be used by anyone else or not. When I wrote the code for ICM, I tried to make it "user friendly" for the time (late 80's), but the code has not been updated in terms of making it easier to use, particularly with regards to dynamic array allocation available in F90/95. You have to have a Fortran compiler to apply the model.