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Change the value of "plot1" again to animate the PV at 320K. | Code Block |
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plot1=["pv320K"] |
You might add the mslp or z500 fields to this plot e.g. | Code Block |
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plot1=["z500.s","pv320K","mslp"] |
Note that the fields are plotted in the order specified in the list! |
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| borderColor | green |
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| borderStyle | dotted |
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| Expand |
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| title | Additional task: Changing the map geographical area |
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| Changing the map geographical area
Right-click on an_1x1.mv icon and select 'Edit'. In the edit window that appears | Panel |
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| bgColor | white |
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| titleBGColor | lightlightgrey |
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| title | Two map types are available covering a different area |
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| Code Block |
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| language | bash |
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| title | Changing geographical area |
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| #Map type: 0=Atl-an, 1: Atl-fc, 2: France
mapType=0 |
With mapType=0 , the map covers a large area centred on the Atlantic suitable for plotting the analyses and track of the storm (this area is only available for the analyses). With mapType=1 , the map also covers the Atlantic but a smaller area than for the analyses. This is because the forecast data in the following exercises does not cover as large a geographical area as the analyses. With mapType=2 , the map covers a much smaller region centred over France. |
Change, mapType=0 to mapType=1 then click the play button  Image Modified at the top of the window. Repeat using mapType=2 to see the smaller region over France. These different regions will be used in the following exercises. Animate the storm on this smaller geographical map. |
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| Expand |
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| title | Additional task: Wind fields, sea surface temperature (SST)Changing the map geographical area |
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The an_2x2.mv icon plots up to 4 separate figures on a single frame.Changing the map geographical area
Right-click on the an_2x21x1.mv icon icon and select the select 'Edit' menu item.. In the edit window that appears | Panel |
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| bgColor | white |
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| titleBGColor | lightlightgrey |
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| title | Two map types are available covering a different area |
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| Multiple plots per page | #Define plot list (min 1- max 4)
plot1=["mslp"]
plot2=["wind10"]
plot3=["speed500","z500"]
plot4=["sst"] |
Click the play button Image Removed at the top of the window to run this macro with the existing plots as shown above. Each plot can be a single field or overlays of different fields. Wind parameters can be shown either as arrows or as wind flags ('barbs') by adding '.flag' to the end of variable name e.g. "wind10.flag". | Info |
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Animating. If only one field on the 2x2 plot animates, make sure the menu item 'Animation -> Animate all scenes' is selected. Plotting may be slow depending on the computer used. This reads a lot of data files. |
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| Q. What do you notice about the SST field? |
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| Changing geographical area |
| #Map type: 0=Atl-an, 1: Atl-fc, 2: France
mapType=0 |
With mapType=0 , the map covers a large area centred on the Atlantic suitable for plotting the analyses and track of the storm (this area is only available for the analyses). With mapType=1 , the map also covers the Atlantic but a smaller area than for the analyses. This is because the forecast data in the following exercises does not cover as large a geographical area as the analyses. With mapType=2 , the map covers a much smaller region centred over France. |
Change, mapType=0 to mapType=1 then click the play button Image Added at the top of the window. Repeat using mapType=2 to see the smaller region over France. These different regions will be used in the following exercises. Animate the storm on this smaller geographical map. |
| Expand |
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| title | Additional task: Wind fields, sea surface temperature (SST) |
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Wind fields, sea surface temperature (SST)
The an_2x2.mv icon plots up to 4 separate figures on a single frame. Right-click on the an_2x2.mv |
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icon and select the 'Edit' menu item. | Code Block |
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| language | bash |
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| title | Multiple plots per page |
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| #Define plot list (min 1- max 4)
plot1=["mslp"]
plot2=["wind10"]
plot3=["speed500","z500"]
plot4=["sst"] |
Click the play button Image Modified at the top of the window to run this macro with the existing plots as shown above. Each plot can be a single field or overlays of different fields. Wind parameters can be shown either as arrows or as wind flags ('barbs') by adding '.flag' to the end of variable name e.g. "wind10.flag". | Info |
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Animating. If only one field on the 2x2 plot animates, make sure the menu item 'Animation -> Animate all scenes' is selected. Plotting may be slow depending on the computer used. This reads a lot of data files. |
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| Q. What do you notice about the SST field? |
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Exercise 2: Operational ECMWF HRES forecast
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For those interested: The code that computes the clusters can be found in the Python script: aux/cluster.py. This uses the 'ward' cluster method from SciPy. Other cluster algorithms are available. See http://docs.scipy.org/doc/scipy/reference/generated/scipy.cluster.hierarchy.linkage.html#scipy.cluster.hierarchy.linkage The python code can be changed to a different algorithm or the more adventurous can write their own cluster algorithm! |
Exercise
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5: Assessment of forecast errors
In this exercise, the analyses covering the forecast period are now available to see how Nadine and the cut-off low actually behaved.
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