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Info

Please enter the folder 'openifs_2019training' to begin working.


Note

If the plotting produces thick contour lines and large labels, ensure that the environment variable LC_NUMERIC="C" is set before starting metview.

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Begin by entering the folder labelled 'Analysis':

Task 1: Mean-sea-level pressure and track

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Enter the folder 'HRES_forecast' in the 'openifs_2018'training folder to begin.

Recap

The ECMWF operational deterministic forecast is called HRES. At the time of this case study, the model ran with a spectral resolution of T1279, equivalent to 18km grid spacing.

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Key parameters: MSLP and z500.  We suggest concentrating on viewing these fields. If time, visualize other parameters (e.g. PV320K).

Available plot types

Enter the folder 'ENS' in the openifs_training folder to begin.

Panel


this will plot (a) the mean of the ensemble forecast, (b) the ensemble spread, (c) the HRES deterministic forecast and (d) the control forecast.

 this plots all of the ensemble forecasts for a particular field and lead time. Each forecast is shown in a stamp sized map. Very useful for a quick visual inspection of each ensemble forecast.

this useful macro allows two individual ensemble forecasts to be compared to the control forecast. As well as plotting the forecasts from the members, it also shows a difference map for each.

this will plot the difference between the ensemble control, ensemble mean or an individual ensemble member and the HRES forecast for a given parameter.


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Enter the folder 'Clusters' in the openifs_2018training folder to begin working.

Task 1: Create your own clusters

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Various methods for presenting the forecast error are used in the tasks below.  The clusters created in the previous exercise can also be used.

Enter the 'Forecast errors' folder in the openifs_2018training folder to start work on this exercise.

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Info

The macros described in this tutorial can write PostScript and GIF image files to the 'figures' directory in the 'openifs_2019training' folder.

To save the images, use the 'Execute' menu option on the icon, rather than 'Visualise'. The 'okular' command can be used to view the PDF & gif images.

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