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To operate with this icon first you need to select which output you want to produce by clicking the tab of the corresponding pane. In this icon the input panes contain identical sets of input parameters :
Data
Specifies the data required for the application. The icon field assist button provides a tailor made MARS request in case you need some guidance in the data specification. The requested data is Divergence in the Divwind pane, Vorticity in the Rotwind pane and both in the Uvwind pane. All input data are specified in spherical harmonics.
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this is roughly equivalent to a 
a
| Mathinline |
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\nabla^{2 \times mfltexp} |
Fltc
Specifies the value of the parameter fltc to be used in the smoothing filter. Only available if Smoothing set to Yes . The default value is 19.4.
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Specifies the value of the parameter mfltexp to be used in the smoothing filter. Only available if Smoothing set to Yes . The default value is 2, roughly equivalent to a 
a
| Mathinline |
|---|
\nabla^4 |