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تجزیه و تحلیل وضعیت جوی در سال زراعی 93-94 /فصل دوم( دي- بهمن-اسفند)

وضعیت
موضوع بسته شده است.
A

Amir Mohsen

متخصص بخش هواشناسی


 [h=3]Warm Fronts

  • Warm front- a front in which warm air replaces cooler air at the surface.


  • Some of the characteristics of warm fronts include the following:
    • The slope of a typical warm front is 1:200 (more gentle than cold fronts).
    • Warm fronts tend to move slowly.
    • Warm fronts are typically less violent than cold fronts.
    • Although they can trigger thunderstorms, warm fronts are more likely to be associated with large regions of gentle ascent (stratiform clouds and light to moderate continuous rain).
    • Warm fronts are usually preceded by cirrus first (1000 km ahead), then altostratus or altocumulus (500 km ahead), then stratus and possibly fog.
    • Behind the warm front, skies are relatively clear (but change gradually).
    • Warm fronts are associated with a frontal inversion (warm air overrunning cooler air).

  • If a warm front exists on a weather map, it will be northeast of the cold front and often, to the east of a surface low pressure area.


  • Clouds and precipitation are quite prevalent to the north of the warm front. This results from the fact that low-level southerly winds in the "warm sector" of the cyclone rise up and over the cooler, more dense air at the surface located north of the warm front. The lifting leads to saturation, cloud formation, and, ultimately, to some form of precipitation.
 
A

Amir Mohsen

متخصص بخش هواشناسی
EurAfricaL_plot_weather_map.jpg
 
B

babak2006

کاربر ويژه
جای بسی خوشحالی است دراخرین ماه زمستان هرچهارگوشه ایران سفید و پر برقه وبا توجه به سرمای بعد برف این برف درکوهستان ها دخیره بسیارخوبی خواهد شد
 
وضعیت
موضوع بسته شده است.
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