tag:blogger.com,1999:blog-2313427464944392482.post8639887949047555254..comments2024-03-25T05:30:23.847+11:00Comments on HotWhopper: Chaotic weather and climate constraints gets Willis Eschenbach wonderingSouhttp://www.blogger.com/profile/08818999735123752034noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-2313427464944392482.post-72346721338990739282015-05-27T19:28:14.481+10:002015-05-27T19:28:14.481+10:00" As a result, it is not always possible to c..." As a result, it is not always possible to complete the final algebraic step for nonlinear problems." - it is never. Numerical calculations will do fine however.cRR Kampenhttps://www.blogger.com/profile/07571285063752477448noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-25690454318176418682015-05-27T03:18:19.907+10:002015-05-27T03:18:19.907+10:00I guarantee airplane wings aren't analytically...I guarantee airplane wings aren't analytically solved either -- it's also done in simulation. If these people were as sceptical of engineering simulations as they claim to be in climate science, they'd never leave their tent.numerobisnoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-34172648922591910252015-05-27T03:14:06.011+10:002015-05-27T03:14:06.011+10:00I suggest Willis start with Kowalik and Murty chap...I suggest Willis start with <a href="http://www.amazon.com/Numerical-Modeling-Dynamics-Advanced-Engineering/dp/9810213336" rel="nofollow">Kowalik and Murty</a> chapter 2.2.Chase Shttps://www.blogger.com/profile/04659478289426350280noreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-35494932795684228422015-05-27T00:20:16.855+10:002015-05-27T00:20:16.855+10:00"Well-posed BVPs do get solved all the time i..."Well-posed BVPs do get solved all the time in areas like designing wings for aircraft, geophysics and electrostatics. Real science (where there’s a problem if the wings fall off, you drill in the wrong place, or your industrial painting doesn’t work), rather than climate pseudoscience (where observations are never matched to projections)."<br /><br />I see our geophysicist secret is well kept, everyone thinks we give "good" results :] <br /><br />Joke aside : no. Geophysics tackle with serious problems : <br />- the complexity of the underground<br />- the difficulty to get a 3D picture out of basically 2D measurements (or 3D sparse measurements if you drill)<br />Sometimes, with enough simplifications, you are able to solve well-defined BVP (for example, Earth eigenfrequencies). Sometimes even with simplifications you are not able to solve them exactly (gravimetry) <br /><br />Obviously the commentor is not learned in geosciences, that means that he put this example for a specific reason - I'd venture ideology ... bratislanoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-51428137173089624662015-05-26T22:44:05.232+10:002015-05-26T22:44:05.232+10:00"Willis wrote about two different boundaries...."Willis wrote about two different boundaries. In one he quoted an extract about a free boundary in a simple climate model "being the interface between ice‐covered and ice-free areas". In another he quoted from Roger Pielke Sr that "The boundaries in the context of climate prediction are the ocean surface and the land surface".<br /><br />Willis asks who is right - either or both?"<br /><br />Oh FFS. And this clown is one of their "experts"?Contrail Chooknoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-71454364642130264872015-05-26T22:12:39.527+10:002015-05-26T22:12:39.527+10:00Nice post Sou. I can see how the comment on nonlin...Nice post Sou. I can see how the comment on nonlinear systems would get a non-expert excited - it appears really damning to someone who has no experience solving these kinds of physical problems.<br /><br />Reading your stuff on chaos and climate got me thinking - I wonder if it's possible to design a model of planetary orbits that would generate chaotic and unpredictable seasons? i.e. can one design an orbital system that generates a Game of Thrones world? [I would say Aldiss or Park, but they have regular yet very long seasons...]Captain Flashheartnoreply@blogger.comtag:blogger.com,1999:blog-2313427464944392482.post-3796174314954307972015-05-26T22:05:37.177+10:002015-05-26T22:05:37.177+10:00I think it's extremely important to restate th...I think it's extremely important to restate that these people truly believe they know more than the scientists. NWychanoreply@blogger.com