Large-data Set Flashcards
What are the UK locations?
. Leuchars
. Leeming
. Heathrow
. Hurn
. Camborne
What type of variables are in the LDS?
discrete variables
What are the dates, years and months in the LDS?
1 May - 31st October (184 days)
1987 and 2015
What are the 14 variables for the UK locations?
. Daily mean temperature
. Daily total rainfall
. Daily total sunshine
. Daily maximum relative humidity
. Daily mean visibility
. Daily mean cloud coverage
. Daily mean pressure
. Daily maximum gust
. Daily mean wind speed
. Daily mean windspeed (Beaufort conversion)
. Daily mean wind direction (bearing)
. Daily mean wind direction (cardinal direction
. Daily max gust direction
. Daily max gust direction
What are the 5 overseas variables?
. Daily mean temperature
. Daily total rainfall
. Daily mean pressure
. Daily mean windspeed
. Daily mean windspeed (Beaufort conversion)
Which variable has trace values and how is this dealt with in calculations? Where doesn’t trace appear?
Rainfall - 0.05mm
Take as 0.025mm in calculations (cleaning the data)
Trace doesn’t appear in overseas locations
How are the units for daily man temperature?
°C
What are the units for total rainfall?
mm
What are the units for total sunshine?
Hours
What max humidity level is associated with mist and fog?
Above 95%
What is the unit for mean visibility and how can it be converted?
Decimetres (Dm)
1Dm = 10m
What is the unit for cloud coverage and what is the scale?
Oktas measured from 0-8 (1/9 probability of any one measure)
What are the units for daily mean pressure?
hPa
How is windspeed and gust measured?
Knots
How many different outcomes are there for cardinal directions?
16 - (N, NNE, NNW, NNS, S, SSE…)