pm2.5 visualization

PM2.5 Interpolation andVisualization based on Wind Fieldsked2016/05/152016/06/13 update

pm2.5pm2.5pm2.5*

Our systemPM2.5http://www.cmlab.csie.ntu.edu.tw/~ked/pm25.htm

PM2.5 + radarhttp://www.cmlab.csie.ntu.edu.tw/~ked/pm25_4.htm

Why a different PM2.5 vis. system

2016/04/12

*

The visualization of PSI result

2016/04/12

PSI*

The visualization of 2016/04/20

PSI1989PM2.5PSI*

The visualization of PSI resultAveraged index

2016/04/12

12*

The visualization of PSI resultAveraged indexSparse distribution

2016/04/12

*

Other systems for PM2.5

http://env.g0v.tw/air/2016/04/15

pm2.5g0v

*

Other systems for PM2.5

http://env.g0v.tw/air/http://env.childgrowth.info/air/2016/04/15

*

Other systems for PM2.5

http://env.childgrowth.info/air/ 2015.03.17

2, 3*

How to interpolate the sparse data

*

Wind & PM2.5

2015.03.17

*

Wind & PM2.5

2016.01.01

*

Our system2016/04/15

pm2.5*

Our system

2016/04/22

*

OutlineSystem descriptionData captureInterpolationRenderingConclusions

outline*

OutlineSystem descriptionData captureInterpolationRenderingConclusions

FeaturesInterpolation based on winds x 3D interactionx Auto-renewal

33D*

ArchitectureOur serverNCEPCapture PM 2.5InterpolateCapture wind field & height field

serverserverNCEPpm2.5serverpm2.5

National center for environmental prediction *

ArchitectureWeb browserOur serverNCEPCapture PM 2.5InterpolateGet dataVisualize &updateCapture wind field & height field

browser*

OutlineSystem descriptionData captureInterpolationRenderingConclusions

*

PM2.5 data

Location ?

pm2.5*

PM2.5 data + coordinate

*

Data of NCEP

ncep

13*

.grib2 format records

Ncep.grib2.grib2record.grib2*

How to read .grib2 fileRefer to https://www.google.com.tw/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjCvc7I2Y3MAhVKGJQKHVC4AxgQFgglMAA&url=http%3A%2F%2Fjou-p3.as.ntu.edu.tw%2FP3%2Ffile%2Fteaching%2Ff1386923093.pdf&usg=AFQjCNF0Z5dLY08WxC5pl_0BUxfTvxUvuQ&sig2=eLDe7X0wv0Ol1KG_Dnr9YQ

.grib2*

.grib2 format regular data

https://www.google.com.tw/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjCvc7I2Y3MAhVKGJQKHVC4AxgQFgglMAA&url=http%3A%2F%2Fjou-p3.as.ntu.edu.tw%2FP3%2Ffile%2Fteaching%2Ff1386923093.pdf&usg=AFQjCNF0Z5dLY08WxC5pl_0BUxfTvxUvuQ&sig2=eLDe7X0wv0Ol1KG_Dnr9YQ

.grib2regular*

OutlineSystem descriptionData captureInterpolationRenderingConclusions

*

Vector field

.grib2regular data*

Streamline

streamlinestreamlineparticlestreamline*

Streamlines

streamline*

Flow in the field

particle*

Flow in the field

particleparticle*

Transition

1/35/91/9

particle*

Transition intensity decay

1/3 x 1/25/9 x 1/21/9 x 1/21/2

particleparticle*

Transition matrixRefers to the stochastic process in which the transition probabilities depend only on the current state

1/3 x 1/25/9 x 1/21/9 x 1/21/2

transition matrixparticle*

Irreducible, aperiodic, recurrent

Stationary Markov chain

Markov chainpm2.5Markov chaintransition matrix3particle*

Stationary Markov chain

transition matrixparticle*

OutlineSystem descriptionData captureInterpolationRenderingConclusions

rendering*

ImplementationJavascript + webgl

javascriptwebgl*

RenderingTaiwanPM2.5Wind vector

3pm2.5*

Scientific visualization"its infovis when the spatial representation is chosen, and its scivis when the spatial representation is given

-- wikipedia

scientific visualizationSciVisinfoVissciVis*

Volume rendering

3volume rendering*

Volume rendering

*

Billboard

http://www.markmark.net/clouds/

billboardingpm2.5billboarding*

OutlineSystem descriptionData captureInterpolationRenderingConclusions

*

Case 2016.03.14""

*

Case 2016.04.08

pm2.5*

Thx.PM2.5

pm2.5*

Update

Streamlines for wind fieldWeather radar for rainfall

Anaglyph 3D

Streamline placementRefer to

Weather radar dataDownload from

Thx.

pm2.5pm2.5pm2.5**PSI*PSI1989PM2.5PSI*12**pm2.5g0v

**2, 3****pm2.5**outline*33D*serverserverNCEPpm2.5serverpm2.5

National center for environmental prediction *browser**pm2.5**ncep

13*Ncep.grib2.grib2record.grib2*.grib2*.grib2regular**.grib2regular data*streamlinestreamlineparticlestreamline*streamline*particle*particleparticle*particle*particleparticle*transition matrixparticle*Markov chainpm2.5Markov chaintransition matrix3particle*transition matrixparticle*rendering*javascriptwebgl*3pm2.5*scientific visualizationSciVisinfoVissciVis*3volume rendering**billboardingpm2.5billboarding***pm2.5*pm2.5*