Present Weather 2 Flashcards
1
Q
What is code a
A
The pressure change characteristic over the past three hours
2
Q
What is code ppp
A
The amount of pressure change, over the last three hours, to one decimal place, e.g. if “ppp” was coded as “023”, the pressure change would be 2.3 hPa.
3
Q
What is dew point temperature
A
The temperature to which an air parcel must be cooled, at constant pressure, to become saturated with water vapour
4
Q
What is dew point depression (DPD)
A
Air temperature minus dew point temperature. When DPD = 0, relative humidity = 100%
5
Q
A
