Block 2 ATSC 231 Practice Questions and
Answers
What is the purpose of the Surface Analysis Chart? - Answer-analyzed charts of surface of
surface wx observations (land, ship, buoy)
What is an isobar? - Answer-lines of constant pressure, depict on sea level pressure
What is a troph? - Answer-an...
What type of analysis are on surface analysis chart? - Answer✔✔-frontal and isobaric
What is the relationship between isobar, pressure gradient, wind direction and speed? -
Answer✔✔-The pressure gradient causes low pressure systems to spin counter clockwise, thus
making wind counter clockwise. Isobars indicate wind direction and speed, intensity of pressure
systems.
What are the two types of metar displays at AWC? - Answer✔✔-interactive and static
When are surface visibilities rounded on a station model? - Answer✔✔-0, 1/16, 1/8, 3/16, 1/4,
3/8- 0.3
1/2-0.5
3/4-0.8
1 1/2, 1 3/4- 2
2 1/2 , 3- 3
Sky condition on station model? - Answer✔✔-m- missing
open square- clr
open circle - skc
open with half line- few
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