Large Data Set Flashcards
What are the five UK weather stations in order of South to North?
Camborne
Hurn
Heathrow
Leeming
Leuchars
What are the three overseas weather stations?
Bejing
Jacksonville
Perth
What is unique about Perth?
It’s in the southern hemisphere so winter is June to August
What two time periods are measured in the large data set?
May to October 1987
May to October 2015
What is Daily Mean Temperature measured in?
Degrees Celsius
What is Daily Total Rainfall measured in?
Millimetres
What is the upper band for a trace amount of rainfall ?
0.05 mm
What is Daily Total Sunshine measured in?
Hours to one decimal place
What does Daily Maximum Relative Humidity measure?
The saturation of water vapour in the atmosphere
What are values above 90% in Daily Maximum Relative Humidity associated with?
Fog and Mist
What are values of 100% in Daily Maximum Relative Humidity associated with?
Air is fully saturated and condensation can occur
What is Daily Mean Windspeed measured in?
Knots
What is the conversion from Knots to Miles per hour?
1 Knot = 1.5 Mile per Hour
What is the Beaufort Scale?
The conversion of windspeed to qualitative data including fresh, light and moderate
What is Daily Maximum Gust measured in?
Maximum speed over a 24hr period and is measured in knots
What is Daily Mean Wind Direction measured in?
Degrees relative to True North and the Cardinal Direction (values are rounded to the nearest ten degrees)
When measuring the direction of wind how do you choose direction?
The direction it is blowing from
How is the Daily Maximum Gust Direction measured?
The direction the wind was blowing in the hour the maximum gust occurred
What is the Daily Maximum Gust Direction measured in?
Degrees relative to true north and Cardinal Direction
How is Cloud Cover measured ?
The fraction of the celestial dome is covered by clouds in eighths
What is Cloud Cover measured in?
Oktas with 0 oktas representing a clear sky and 8 representing complete overcast
How is Visibility measured ?
Horizontally
What is Visibility measured in?
Decametres
What is different about how unavailable data is recorded for Visibility?
It is recorded by a dash whereas the others are recorded with n/a
What is Pressure measured in?
Hectopascals
What is the 2015 temperature and windspeed range for Camborne?
Temperature: 10 - 20
Windspeed: 3 - 18
What is the 2015 temperature and windspeed range for Heathrow?
Temperature: 8 - 29
Windspeed: 3 - 19
What is the 2015 temperature and windspeed range for Hurn?
Temperature: 6 - 24
Windspeed: 2 - 19
What is the 2015 temperature and windspeed range for Leeming?
Temperature: 4 - 23
Windspeed: 3 - 17
What is the 2015 temperature and windspeed range for Leuchars?
Temperature: 4 - 19
Windspeed: 3 - 23
Why does Heathrow have the highest temperature of UK stations ?
Heathrow has the biggest UK airport
Why does Leuchars have the highest windspeed values ?
There is the effect of the sea breeze
What is expected of Jacksonville compared to the UK?
High temperatures and more rainfall and moderate wind speeds
What is expected of Bejing compared to the UK?
High and varied temperatures (not as high as Jacksonville)
What is expected of Perth compared to the UK?
Seasons are reversed and high wind speeds
Why is it hard to use random sampling on the large data set?
Some values are missing
