the$universe$in$a$(pre.y$big)$boxsitn.hms.harvard.edu/wp-content/uploads/2013/04/... · if we broke...
TRANSCRIPT
![Page 1: The$Universe$in$a$(Pre.y$Big)$Boxsitn.hms.harvard.edu/wp-content/uploads/2013/04/... · If we broke the whole atmosphere into One cubic foot blocks, (150,000,000,000,000,000,000 blocks)](https://reader033.vdocuments.site/reader033/viewer/2022050315/5f77f01e03a59a65d648a548/html5/thumbnails/1.jpg)
The$Universe$in$a$(Pre.y$Big)$Box:From$Cells$to$Galaxies$Using$Super?Computers
Part%II
%10%to%10%million%meters:%Weather,$Climate$and$the$Earth$System$in$Supercomputers
Michael$Long
Thursday, October 25, 12
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Thursday, October 25, 12
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Essen%ally,*all*models*are*wrong,*but*some*are*useful. !"George"Box,"1987
Thursday, October 25, 12
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Thursday, October 25, 12
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Tonight:$Mostly$cloudy,$with$a$low$around$44.$Southeast$wind$around$5$mph
Thursday, October 25, 12
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ENIAC:$U.S.$Army$Photo/K.$Kempf,$"Historical$Monograph:$Electronic$Computers$Within$the$Ordnance$Corps"Thursday, October 25, 12
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Tonight:$Mostly$cloudy,$with$a$low$around$44.$Southeast$wind$around$5$mph
Thursday, October 25, 12
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Photo:$Jon$McLean/JMP$Studio$LLCThursday, October 25, 12
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Thursday, October 25, 12
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Atmosphere*Rendered*as*a*30D*grid
Thursday, October 25, 12
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Atmosphere*Rendered*as*a*30D*grid
Image"adapted"from"Wikicommons
Thursday, October 25, 12
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If we broke the whole atmosphere into One cubic foot blocks, (150,000,000,000,000,000,000 blocks)
a basic weather prediction One second into the future:
iPhone:World’s Fastest Computer:
(16 million times as powerful as an iPhone)
5 million years100 days
Note:$TheoreUcal$Fastest$Speed
Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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If we broke the whole atmosphere into One cubic YARD blocks, (19,000,000,000,000,000,000 blocks)
a basic weather prediction One second into the future:
14 days
Note:$TheoreUcal$Fastest$Speed
World’s Fastest Computer:
Thursday, October 25, 12
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If we broke the whole atmosphere into 1000 cubic feet blocks, a basic weather prediction One second into the future:
World’s Fastest Computer:2.5 hours
Note:$TheoreUcal$Fastest$Speed
Thursday, October 25, 12
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10 seconds
Note:$TheoreUcal$Fastest$Speed
World’s Fastest Computer:
If we broke the whole atmosphere into 1,000,000 cubic feet blocks, a basic weather prediction One second into the future:
Thursday, October 25, 12
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10 seconds
Note:$TheoreUcal$Fastest$Speed
World’s Fastest Computer:
If we broke the whole atmosphere into 1,000,000 cubic feet blocks, a basic weather prediction 15 MINUTES into the future:
Thursday, October 25, 12
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Current Weather Forecast Models:
On$a$moderately$size$computer$systemApproximately$1000$Parallel$Processors
40-day future prediction in one day
Thursday, October 25, 12
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Questions?
Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Thursday, October 25, 12
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Courtesy:$NASAThursday, October 25, 12
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Courtesy:$NOAA/NaUonal$Hurricane$CenterThursday, October 25, 12
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Thursday, October 25, 12