Comments on: Fossil Fuel Emissions Verification http://www.ramblemuse.com/rmtp/2008/05/26/fossil-fuel-emissions-verification/ Perspectives on Life, the Universe, and Everything from a Physicist, Massage Instructor, Father, Dancer, Runner, ... Mon, 01 Dec 2008 22:35:16 +0000 http://wordpress.org/?v=2.5.1 By: keg http://www.ramblemuse.com/rmtp/2008/05/26/fossil-fuel-emissions-verification/#comment-12576 keg Tue, 27 May 2008 14:04:53 +0000 http://www.ramblemuse.com/rmtp/?p=34#comment-12576 Hi Mike, The entire animation is over one week, based on model output from WRF-Chem every three hours. So what I first produced were 56 still images covering the week. There were other air basins in the data, but I focused on the LA and SF ones just for importance and visibility/display. Thus was supposed to be just an initial prototype, but became popular enough within the project that I ran it through review and release so we could distribute it. I'd done the stills to include in the project proposal for internal funding, but immediately was getting "suggestions" to animate it. So I just dragged it all into Premiere Elements, played with the display and dissolve times, and it came together. I hadn't done one with a time indicator, although we'd discussed it. At this point, I'm not at LLNL anymore and don't have access to IDL, so, at least for me, it's not a simple redo. At some point, I may try to do more with it using, perhaps, Python and <a href="http://www.vtk.org/" rel="nofollow">VTK</a>. After doing this animation, I'd been focusing more on the inversions methods and including C-13 and C-14 in those. The shifts you see, however, are all in the span of that first week in January 2006. The winds, taken, from one of the weather reanalyses. At one point, emissions from the SF basin split, with part going up the coast and part up the central valley. Also, at one point, the LA emissions came up the coast to SF while the SF emissions went up the coast to Eureka. Catching the offshore flow from LA underlined the importance of having a flask sampler on Catalina Island. It's timely research and the methodology could have uses far beyond just California. It's not clear what funding it will get, however. There's other inversion work on carbon dioxide occurring out there. Key words would be <a href="http://www.purdue.edu/transcom/published_presentations.php" rel="nofollow">TransCom</a> and <a href="http://www.esrl.noaa.gov/gmd/ccgg/carbontracker/" rel="nofollow">Carbon Tracker</a>. The strong points that LLNL has is the accuracy of measuring the isotopes at CAMS. Tom has also tied in with other people doing CO<sub>2</sub> measurements. Hi Mike,

The entire animation is over one week, based on model output from WRF-Chem every three hours. So what I first produced were 56 still images covering the week. There were other air basins in the data, but I focused on the LA and SF ones just for importance and visibility/display.

Thus was supposed to be just an initial prototype, but became popular enough within the project that I ran it through review and release so we could distribute it. I’d done the stills to include in the project proposal for internal funding, but immediately was getting “suggestions” to animate it. So I just dragged it all into Premiere Elements, played with the display and dissolve times, and it came together.

I hadn’t done one with a time indicator, although we’d discussed it. At this point, I’m not at LLNL anymore and don’t have access to IDL, so, at least for me, it’s not a simple redo. At some point, I may try to do more with it using, perhaps, Python and VTK. After doing this animation, I’d been focusing more on the inversions methods and including C-13 and C-14 in those.

The shifts you see, however, are all in the span of that first week in January 2006. The winds, taken, from one of the weather reanalyses. At one point, emissions from the SF basin split, with part going up the coast and part up the central valley. Also, at one point, the LA emissions came up the coast to SF while the SF emissions went up the coast to Eureka. Catching the offshore flow from LA underlined the importance of having a flask sampler on Catalina Island.

It’s timely research and the methodology could have uses far beyond just California. It’s not clear what funding it will get, however. There’s other inversion work on carbon dioxide occurring out there. Key words would be TransCom and Carbon Tracker. The strong points that LLNL has is the accuracy of measuring the isotopes at CAMS. Tom has also tied in with other people doing CO2 measurements.

]]> By: Mike Wofsey http://www.ramblemuse.com/rmtp/2008/05/26/fossil-fuel-emissions-verification/#comment-12575 Mike Wofsey Tue, 27 May 2008 12:36:29 +0000 http://www.ramblemuse.com/rmtp/?p=34#comment-12575 Hi Keith, I followed your link from the NASW site. This is an excellent animation, most interesting to me is how I can see the change of the emission flow as the temperature gradient between the land and the ocean shifts. But I can't tell if that gradient is over 24 hours or 365 days. Do you have a version that includes a time scale? Thanks. Hi Keith, I followed your link from the NASW site. This is an excellent animation, most interesting to me is how I can see the change of the emission flow as the temperature gradient between the land and the ocean shifts.

But I can’t tell if that gradient is over 24 hours or 365 days. Do you have a version that includes a time scale?

Thanks.

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