large data set 1.5

Question 1

Name the 5 UK weather stations from North to South

Answer 1

• leuchars
• leeming
  -heathrow
  -hurn
  -cramborne

Question 2

Name the 3 international weather stations

Answer 2

-Jacksonville (Florida)
-Beijing
-Perth

Question 3

Daily mean temperature

Answer 3

in °C – this is the average of the hourly temperature readings during a 24-hour period.

Question 4

Daily total rainfall

Answer 4

including solid precipitation such as snow and hail, which is melted before being included in any measurements – amounts less than 0.05 mm are recorded as ‘tr’ or ‘trace’

Question 5

Daily total sunshine r

Answer 5

recorded to the nearest tenth of an hour

Question 6

Daily mean wind direction and windspeed

Answer 6

in knots, averaged over 24 hours from midnight to midnight. Mean wind directions are given as bearings and as cardinal (compass) directions. The
data for mean windspeed is also categorised according to the Beaufort scale

Question 7

Daily maximum gust

Answer 7

in knots – this is the
highest instantaneous windspeed recorded. The direction from which the maximum gust
was blowing is also recorded

Question 8

Daily maximum relative humidity

Answer 8

given as a percentage of air saturation with water vapour. Relative humidities above 95% give rise to misty and foggy conditions

Question 9

Daily mean cloud cover

Answer 9

measured in ‘oktas’ or eighths of
the sky covered by cloud

Question 10

Daily mean visibility

Answer 10

measured in decametres (Dm). This is the greatest horizontal distance at which an object can be seen in daylight

Question 11

Daily mean pressure

Answer 11

measured in hectopascals (hPa)