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<div>Hi Martha,</div>
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<div>I have closed the heat budget for the global ocean using the nctiles output available on
<a href="ftp://ecco.jpl.nasa.gov/Version4/Release3">ftp://ecco.jpl.nasa.gov/Version4/Release3</a>/. The ratio of STD(tendency-convergences-forcing)/STD(tendency) is ~1e-7. </div>
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<div>Although the netCDF files are all in 64-bit precision, some of the original binary diagnostic outputs that were converted to the tiled netCDF files are in 32-bit precision. So apparently it is not necessary for the files to be in 64-bit precision to close
budgets. </div>
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<div>Release 3 has geothermal flux. See Section 4.2.1 (page 10) of Chris Piecuch’s
<a href="ftp://ecco.jpl.nasa.gov/Version4/Release3/doc/evaluating_budgets_in_eccov4r3.pdf">
note</a> on budget calculation. </div>
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<div>Regards,</div>
<div>Ou Wang</div>
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<span style="font-weight:bold">From: </span><<a href="mailto:ecco-support-bounces@mit.edu">ecco-support-bounces@mit.edu</a>> on behalf of Martha Buckley <<a href="mailto:marthabuckley@gmail.com">marthabuckley@gmail.com</a>><br>
<span style="font-weight:bold">Reply-To: </span>"ECCO support list, wider membership" <<a href="mailto:ecco-support@mit.edu">ecco-support@mit.edu</a>><br>
<span style="font-weight:bold">Date: </span>Tuesday, October 31, 2017 at 7:35 AM<br>
<span style="font-weight:bold">To: </span>"ECCO support list, wider membership" <<a href="mailto:ecco-support@mit.edu">ecco-support@mit.edu</a>><br>
<span style="font-weight:bold">Subject: </span>[ecco-support] Budgets in ECv4, release 3<br>
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<div dir="ltr">Hi all,
<div>I am trying to close mass, heat, and salt budgets in ECCo v4 release 3. I closed the budgets to machine precision ((tendancy - ocean convergences - surfaceFluxes)/tendancy ~ 1e-7)) for an older iteration. However, I unable to close the budgets to machine
precision for the files on the website for release3 (the budgets visually look fine though). </div>
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<div>I'm trying to figure out if I have a bug in my code or if something changed with the new output. A few questions:</div>
<div>(1) Are the files 64-bit precision, which is needed to close budgets? This seems to be the case since ncdump says the files are "double". </div>
<div>(2) Did anything change between "r2/iter3" and release3 that might explain this? </div>
<div>(3) Has anyone closed budgets for release3 using the nctiles output available on the ECCO website?</div>
<div>thanks,</div>
<div>Martha</div>
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-- <br>
<div class="gmail_signature" data-smartmail="gmail_signature">Martha W. Buckley<br>
<a href="mailto:marthabuckley@gmail.com" target="_blank">marthabuckley@gmail.com</a><br>
<a href="http://sites.google.com/site/marthabuckley/home" target="_blank">http://sites.google.com/site/marthabuckley/home</a><br>
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