#1. The airmass which originates at sea in high Latitudes is called
Polar maritime originates over cold oceans in high latitudes.
#2. The airmass which originates over equatorial region is
Equatorial airmass is warm and moist due to high evaporation over oceans.
#3. If the advancing cold front is colder than the cool air mass of the warm front, the advancing cold undercuts and lifts both the warm and cool air masses of the warm front. This is
This is a cold occlusion because the advancing cold front undercuts both air masses.
#4. The airmass which originated over land area located in polar region is:
Polar continental airmass is cold and dry as it originates over polar land.
#5. If a warm airmass overtakes a cold air mass, it is called
When warm air overtakes cold air, it forms a warm front.
#6. At warm front
Warm air rises over cold air forming sloping frontal clouds.
#7. The conditions are always unstable at a
Cold fronts lift warm air rapidly causing instability.
#8. Sometime Line squall about 100-300 km ahead of a
Line squalls occur ahead of a cold front.
#9. Precipitation occurs over a belt of 30-50 km on both sides of front
Warm fronts produce precipitation over a wide area (30-50 km).
#10. Cold front moves at _____ the speed of a warm front moves
Cold fronts move roughly twice as fast as warm fronts.
#11. Line Squalls occur _____ of cold front
Line squalls typically form ahead of the cold front.
#12. Front are associated with
Fronts are features of extra-tropical cyclones in mid-latitudes.
#13. CB, Roll-type clouds, SC, AC with embedded CB are associated
These clouds are typical of cold front activity.
#14. The surface of discontinuity between the Polar Ely and the temperate Wly is called
Polar front separates cold polar air and warm temperate air.
#15. The air mass which originated from sea area located in lower Lat is
Tropical maritime air is warm and moist.
#16. WDs approach India as
Western Disturbances approach India as occluded fronts.
#17. Maximum WDs occur in
Most WDs occur during winter months.
#18. Ahead of a warm front the surface wind
Wind typically backs and weakens ahead of a warm front.
#19. On approach of a Warm Front temperature
Temperature rises gradually approaching a warm front.
#20. CI, CS, AS, NS, ST in sequence are associated with the front
Cloud sequence CI → ST is typical for warm fronts.
#21. During the passage of a Cold Front winds
Cold front passage brings sudden squally winds.
#22. Visibility is poor in a Warm Front
Visibility decreases ahead and during the warm front passage.
#23. Fog occurs in Cold Front
Fog is common during the passage of a cold front.
#24. WD is a ______ front
Western Disturbances are associated with cold fronts.
#25. FZRA and FZFG occur ______ of a warm front
Freezing rain/fog occurs ahead of a warm front.
#26. Precipitation ceases after the passage of a front
After a cold front passes, precipitation usually stops.
#27. During the approach of a Warm Front wind
Wind backs during approach of warm front.
#28. A WD with two or more closed isobars, at 2 hPa interval, it is termed as
It is called a Western Cyclone.
#29. A WD originate over
WDs originate over Mediterranean, Caspian and Black Sea regions.
#30. Induced lows develop to the _____ of a WD
Induced lows develop to the North of a WD.
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