ECMWF analysis plots for CARIBIC flight 340 from Vancouver to Frankfurt on 19-20 April 2011


Trajectories

5-day backward: All // 0-1h / 1-2h / 2-3h / 3-4h / 4-5h / 5-6h / 6-7h / 7-8h / 8-9h / 9-10h
8-day backward WAS: 01 /02 /03 /04 /05 /06 /07 /08 /09 /10 /11 /12 /13 /14 /15 /16 /17 /18 /19 /20 /21 /22 /23 /24 /25 /26 /27 /28 /29 /30 /31 /32 /33 /34 /35 /36 /37 /38 /39 /40 /41 /42 /43
8-day backward WAS volume: 01 /02 /03 /04 /05 /06 /07 /08 /09 /10 /11 /12 /13 /14 /15 /16 /17 /18 /19 /20 /21 /22 /23 /24 /25 /26 /27 /28 /29 /30 /31 /32 /33 /34 /35 /36 /37 /38 /39 /40 /41 /42 /43
2-day forward: All



"Surface" maps
Level (hPa) - - - - - - -
11042000+006 Total CC Low CC Medium CC High CC H2O column 6hr LS Prec 6hr Con Prec

Pressure level maps
Level (hPa) 250 250 250 250 500 250 500 250 700
11042006 PV Z Wind W W Spec hum RH RH EpotT

Vertical X-sections
Pressure versus time PV Eq pot T Spec hum RH Wetb potT U V W Cloud water Cloud ice Cloud cover


Note that there is a problem with the determination of the ECMWF tropopause at around 5h, esp. with the static tropopause which may be undefined in a deep trough/fold over Greenland.
Furthermore, there is a large and fast fluctuation in the temperature observed by CARIBIC in the stratosphere at 05h24 - is it real ? perhaps a gravity wave? There are also flucttuations in pressure and altitude at around this time (turbulence?).

ECMWF and measured parameters as a function of UT
P P+tropop. geop.Z+tropop. PV PV+tropop. Pott.T Pott.T+tropop. T T+tropop. Wind speed Wind dir w=dp/dt H2O mix.ratio RH Cloud cover Liquid/Ice water
Model data interpolated along track: file1 (meteo)// file2 (clouds) // file3 (tropopause)