Applied - Large Data Set Flashcards
List the places in the UK in order from North - South
- Leuchars
- Leeming
- Heathrow
- Hurn
- Camborne
List the places outside of the UK
- Perth - Australia
- Beijing - China
- Jacksonville - North America
What are the two time periods?
May - October 1987
May - October 2015
Key facts need to know - Daily Mean Air Temperature
Units - Degrees Celius (1dp)
Hourly temperature - 0900-0900 GMT
Key facts need to know - Daily Total Rainfall
Units - mm (1dp)
24 hours of rain starting 0900 GMT
Trace of rain (tr) less than 0.05mm
Key facts need to know - Daily total sunshine
Units - hours (1dp)
Key facts need to know - Daily maximum relative humidity
It is the measure of how close air is to being saturated with water vapour.
Units - % (nearest integer)
If reading above 95% associated with mist and fog
Key facts need to know - Daily mean wind speed and direction
Units - Knots (1Kn = 1.15mph) nearest integer
Beaufort conversion (calm, light) discrete
Direction measured in degrees (nearest 10) and cardinal direction
Averaged for the 24 hours (0000 GMT)
Key facts need to know - Daily Maximum Gust and Direction
Units - Knots and Beaufort conversion
Maximum instaneous speed over the 24 hours
Key facts need to know - Cloud Cover
It is a discrete variable
Measure in Oktas (eighths of the sky covered by cloud)
Key facts need to know - Daily Mean Visibility
If data is unavailable ‘ - ‘
Measured in decametres (1Dm = 10m) Measured horizontally
Key facts need to know - Daily Mean Pressure
Units Hectopascals (1hPa = 100Pa = 1 millibar)
What happened in 15-16 October in the UK
Giant storm
South of England affected
Variables screwed - wind, gust and rainfall
What should you do to the data before taking samples?
Make sure data is cleaned - remove any n/a or ‘ - ‘
Which variables are missing for the first half of May 1987 in the UK cities?
- Total daily sunshine
- Mean wind speed
- Maximum gust
