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Group VG Task 1

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visda edited this page Sep 8, 2014 · 1 revision

Participants:

  • Sonification: Visda, Robert, Hanns Holger, Tony, Doon, Holger
  • Climate Science: Georg, Martin, Andrea, Satya

Data file(s):

Temperature:

We use near surface temperature data in monthly means (one value/ month) over 156 years in the past (1850 - 2005) and 295 years in the future (2006 - 2300). The first two files include 73 latitudes, and 144 longitudes, and the second two(zonal data) with only 18 latitudes.

  • 25_tas_Amon_MPI-ESM-LR_historical_r1i1p1_185001-200512.nc
  • 25_tas_Amon_MPI-ESM-LR_rcp45_r1i1p1_200601-230012.nc
  • ZON_tas_Amon_MPI-ESM-LR_historical_r1i1p1_185001-200512.nc
  • ZON_tas_Amon_MPI-ESM-LR_rcp45_r1i1p1_200601-230012.nc

Precipitation:

We use precipitation data in monthly means (one value/ month) over 156 years in the past (1850 - 2005) and 295 years in the future (2006 - 2300). The first two files include 73 latitudes, and 144 longitudes, and the second two(zonal data) with only 18 latitudes.

  • 25_pr_Amon_MPI-ESM-LR_historical_r1i1p1_185001-200512.nc
  • 25_pr_Amon_MPI-ESM-LR_rcp45_r1i1p1_200601-230012.nc
  • ZON_pr_Amon_MPI-ESM-LR_historical_r1i1p1_185001-200512.nc
  • ZON_pr_Amon_MPI-ESM-LR_rcp45_r1i1p1_200601-230012.nc

Task:

scanning temperature data and precipitation data and listen to both simultaneously to find different patterns in various geographical regions

  • make decisions on how to read through data dimensions (time[monthly means, anomalies, ...], latitude, longitude/zonal mean)
  • chose specific regions or global data
  • find metaphoric sonification designs to distinguish between temperature and precipitation
  • compare the zonal data sets to full data sets

Brainstorming:

Decisions made:

  • Physical time = sonification time
  • we restrict ourselves to smaller regions
  • panning from left to right
  • parameterizing granular synthesis

mapping strategy:

Here are the ideas that were discussed in the group but we didn't have enough time to get them all implemented.

  • pitch + amplitude: precipitation level
  • density : fix
  • upward glissandi for north, downward glissandi south
  • panorama: for east - west
  • noise gate to display only data above a certain threshold (you need to calculate this anomaly depending on your grid)

Description of Sonification approach:

The sonification approach for this task was parameter mapping using granular synthesis. Each grain is a random spot and resampling the data space that way.

Audio files:

Sonification Patches:

Discussion and Conclusion:

The climate scientists suggests to combine multiple parameters since one parameter alone doesn't represent extreme scenarios in climate. Precipitation is not linearly distributed and we have only a few outliers and it sound pretty uniform in one area.

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