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titleQuestions

How does the timing and distribution of the precipitation from the forecast compare to the observations shown in the paper by Pantillon?

Suggested plots for discussion

The following is a list of parameters and plots that might be useful to produce for later group discussion. Choose a few plots and use both the HRES forecast and the analyses.

For help on how to save images, see the beginning of this tutorial.

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titleIsobaric maps
  • MSLP + 10m winds :                                           interesting for Nadine's tracking and primary circulation
  • MSLP + relative humidity at 700hPa + vorticity at 850hPa 850hPa  : low level signature of Nadine and disturbance associated with the cutoff low, with mid-level humidity of the systems.
  • Geopotential + temperature at 500hPa :            large scale patterns, mid-troposphere position of warm Nadine and the cold Atlantic cutoff
  • Geopotential + temperature at 850hPa :            lower level conditions, detection of fronts
  • 320K potential vorticity (PV) + MSLP,
  • 500hPa relative vorticity (see Fig. 14 in Pantillon) :     upper level conditions, upper level jet and the cutoff signature in PV

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Horizontal maps (analysis + forecast) :.
2 : MSLP + relative humidity at 700hPa + 850 absolute vorticity --> Signatures at low levels of Nadine and disturbance associated with the cutoff low.  Mid level humidity of the systems.
3 : Equivalent potential temperature at 850 hPa  + winds at 850 hPa + vertical velocity at 600hPa + MSLP in background --> focussing on the moist and warm air in the lower levels and the vertival motion. There should not be a strong horizontal temperature gradient around Nadine, the winds should be stronger for Nadine than for the cutoff.

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