Difference between revisions of "Meteorology"

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* {{cmd|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website|screenshots/viz.php|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.
* {{cmd|v.vol.rst}} - useful for 3D spline interpolation between sparse data points. See the Slovakia 3D precipitation voxel isosurfaces screenshot on the {{website|screenshots/viz.php|visualization screenshots}} page. Tutorial can be found in the [http://www.grassbook.org/data_menu2nd.php GRASS book 2nd Ed.], chapter 7.
== Conventions ==
Wind meteo data usually follow a convention different from the GRASS one. First, the wind direction expresses the direction which wind blows FROM and not TO (as a non meteorologist might expect). Second, the code expressing the directions differs from the one adopted by GRASS (for aspect, flow direction, etc.).





Revision as of 08:36, 19 June 2014

Meteorology

GRASS used together with R-stats provides a powerful toolset to analyse meteorological time series and to perform spatio-temporal interpolation.


d.rast.arrow at work
  • r.series - useful for time series analysis of raster data.
  • v.surf.rst - useful for 2D spline interpolation between sparse data points.


Conventions

Wind meteo data usually follow a convention different from the GRASS one. First, the wind direction expresses the direction which wind blows FROM and not TO (as a non meteorologist might expect). Second, the code expressing the directions differs from the one adopted by GRASS (for aspect, flow direction, etc.).