Large Data Set Flashcards
What are the dates the large data set records?
May-October in 1987 and 2015
What are the 5 UK locations
Leuchars (Scotland), Camborne (Cornwall), Heathrow (Greater London), Hurn (South West England), and Leeming (North Yorkshire)
What are the three overseas locations?
Jacksonville (Florida), Beijing (China capital), Perth (Capital of Western Australia)
Daily mean air temperature - what are its units, to what degree of accuracy, and when are the readings taken?
24 hour period (0900 to 0900), degrees Celsius, to 1 decimal place
Daily total rainfall.
Measured in mm (to one dp), for 24 hours starting at 0900.
What is a tr, or trace amount of rain?
Any amount of daily rainfall less than 0.05mm
Daily total sunshine
Measured in hours to 1 dp
Maximum relative humidity
Given as a percentage to the nearest integer
What is a reading above 95% humidity associated with?
Mist and fog
Daily mean wind speed and direction
Mean is measured in knots, and given to the nearest integer. Its direction is measured in degrees to the nearest 10, and is given as a cardinal direction (eg north). Averaged for 24 hours starting at 0000.
How to convert knots to mph
1kn=1.15mph
Daily maximum gust and direction
Same units as daily wind speed and direction. The maximum instantaneous wind speed over the 24 hours.
Cloud coverage
Measures in Oktas (8ths of sky covered in cloud)
Daily mean visibility
Measured in decametres
What is a decametre
1Dm = 10 metres horizontally