The Large Data Set Flashcards
Name the five UK weather stations from most to least northerly.
Leuchars, Leeming, Heathrow, Hurn, Camborne
Which months are the data from?
May to October
Which years are the data from?
1987 and 2015
Name the three overseas weather stations and which country they’re in.
Beijing, China
Jacksonville, USA
Perth, Australia
How is daily maximum temperature recorded (2 details)?
In degrees Celsius and to 1d.p.
How is daily total rainfall recorded (1detail)?
In millimetres
What does ‘tr’ mean and how to you use it?
Trace (less than 0.05)
Use 0.025
How is daily total sunshine recorded?
In hours and to 1 d.p.
How is daily maximum relative humidity recorded?
As percentages
What is daily maximum relative humidity?
How close the air is to being saturated with water vapour.
What percentage of relative humidity is associated with mist and fog?
Over 95%
How is daily mean wind speed recorded?
Knots
What is the equivalent of 1 knot in mph?
1.15 mph
What is daily maximum gust?
The maximum instantaneous speed that occurred over a 24hr period.
How is daily mean wind direction calculated?
The mean direction of the wind is calculated each hour, then the most frequently recorded direction is used.
How is daily mean wind direction recorded?
Degrees relative to true north.
How is cloud cover recorded?
Oktas
What does cloud cover represent?
The fraction of the celestial dome covered by cloud.
How is visibility measured?
Horizontally
How is visibility recorded?
Metres
How is pressure recorded?
Hectopascals
What is the equivalent of 1 bar in millibars?
1000 millibars
What is the equivalent of 1 millibar in hectopascals?
1 hectopascal
