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The bend in the front is called a wave on the front (or frontal wave). ... If enough precipitation evaporates back into the air, then fog or mist may occur. ... forms the upper level trough is located almost directly above the surface low and ... If the pool of cold air aloft becomes separated from the circumpolar ...
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geog-www.sbs.ohio-state.edu/courses/G620/hobgood/ASP620...
geog-www.sbs.ohio-state.edu/courses/G620/hobgood/ASP620Lecture10.ppt
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above, i.e. strong deformation decreasing over time to allow a wave to grow. .... level wind vectors in the initiation period of the frontal wave (Figs. l(b) to 5(b)) suggests ..... layer problems that could occur, especially over land. .... along-front stretching is directly proportional to the ageostrophic ...
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doi.wiley.com/10.1002/qj.49712454511
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Cyclogenesis can occur anywhere, but in middle and high latitudes, ... The development of a significant cyclone along the polar front depends on whether the initial wave is stable or unstable. Wave formation is more likely to occur on slowly moving or stationary fronts like the polar front than on rapidly moving fronts.
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www.tpub.com/weather2/4-23.htm
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orous short-wave trough aloft resulted in the outbreak of deep convection surrounding and rapid intensification ... mesoscale cyclogenesis to occur in polar air .... directly above the surface low center show that ..... the winds indicative of a warm front (Fig. 15a). Above the frontal zone, which is confined be- ...
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www.springerlink.com/index/FGEC8524ARJWTH3V.pdf
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band stressed by shading, (b) along frontal wind relative ... front, above the low-level PV-band, there is a deep column of moist tropospheric air ... features during this event of frontal cyclogenesis. ... is the marked anticyclonic curvature located aloft ... directly for the finer-scale wave-trains, so that the ...
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www.springerlink.com/index/WX80103311061383.pdf
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Cyclogenesis occurs along the southern coast of Japan when troughing is ... Cyclogenesis will usually occur when the short-wave, trough approaches ... Surface wind speeds. At frontal passage, vary directly with the width of frontal bands. ... Wind speeds aloft can double in 12 hours and increase to over 200 knots ...
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www.futenma.usmc.mil/wx/PUBS/Chapter%203%20Forecasting....
www.futenma.usmc.mil/wx/PUBS/Chapter%203%20Forecasting.doc
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On a surface weather map that shows an open wave cyclone, ... Directly behind the cold front it is cold and snowing. Still further behind the front the weather is cold and clearing. If the front is scheduled to pass your area in 6 hours, a persistence forecast for your area for 12 hours from now would be: ... cold air aloft...
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www.phys.ufl.edu/~selman/teaching/spring02/exams/exam3....
www.phys.ufl.edu/~selman/teaching/spring02/exams/exam3.html
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16. For cyclogenesis to occur along a frontal wave, the winds aloft directly above the wave should be: ... 20. When an upper-level low lies directly above a surface low:
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www-das.uwyo.edu/~geerts/atsc2000/archive/97sum/test3.h...
www-das.uwyo.edu/~geerts/atsc2000/archive/97sum/test3.html
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045. Predicting cyclogenesis ... The pressure at the surface directly relates to the mass of air in a vertical column above the surface. An increase in this ... When converging winds aloft forcefully put mass into a column of air, it creates net convergence and thereby increases the mass within the column. As the mass increases,
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www.fas.org/spp/military/docops/afwa/atmos-U3.htm
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