Large Data Set Flashcards

1
Q

What are the five UK weather stations in order of South to North?

A

Camborne
Hurn
Heathrow
Leeming
Leuchars

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2
Q

What are the three overseas weather stations?

A

Bejing
Jacksonville
Perth

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3
Q

What is unique about Perth?

A

It’s in the southern hemisphere so winter is June to August

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4
Q

What two time periods are measured in the large data set?

A

May to October 1987
May to October 2015

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5
Q

What is Daily Mean Temperature measured in?

A

Degrees Celsius

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6
Q

What is Daily Total Rainfall measured in?

A

Millimetres

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7
Q

What is the upper band for a trace amount of rainfall ?

A

0.05 mm

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8
Q

What is Daily Total Sunshine measured in?

A

Hours to one decimal place

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9
Q

What does Daily Maximum Relative Humidity measure?

A

The saturation of water vapour in the atmosphere

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10
Q

What are values above 90% in Daily Maximum Relative Humidity associated with?

A

Fog and Mist

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11
Q

What are values of 100% in Daily Maximum Relative Humidity associated with?

A

Air is fully saturated and condensation can occur

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12
Q

What is Daily Mean Windspeed measured in?

A

Knots

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13
Q

What is the conversion from Knots to Miles per hour?

A

1 Knot = 1.5 Mile per Hour

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14
Q

What is the Beaufort Scale?

A

The conversion of windspeed to qualitative data including fresh, light and moderate

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15
Q

What is Daily Maximum Gust measured in?

A

Maximum speed over a 24hr period and is measured in knots

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16
Q

What is Daily Mean Wind Direction measured in?

A

Degrees relative to True North and the Cardinal Direction (values are rounded to the nearest ten degrees)

17
Q

When measuring the direction of wind how do you choose direction?

A

The direction it is blowing from

18
Q

How is the Daily Maximum Gust Direction measured?

A

The direction the wind was blowing in the hour the maximum gust occurred

19
Q

What is the Daily Maximum Gust Direction measured in?

A

Degrees relative to true north and Cardinal Direction

20
Q

How is Cloud Cover measured ?

A

The fraction of the celestial dome is covered by clouds in eighths

21
Q

What is Cloud Cover measured in?

A

Oktas with 0 oktas representing a clear sky and 8 representing complete overcast

22
Q

How is Visibility measured ?

A

Horizontally

23
Q

What is Visibility measured in?

A

Decametres

24
Q

What is different about how unavailable data is recorded for Visibility?

A

It is recorded by a dash whereas the others are recorded with n/a

25
What is Pressure measured in?
Hectopascals
26
What is the 2015 temperature and windspeed range for Camborne?
Temperature: 10 - 20 Windspeed: 3 - 18
27
What is the 2015 temperature and windspeed range for Heathrow?
Temperature: 8 - 29 Windspeed: 3 - 19
28
What is the 2015 temperature and windspeed range for Hurn?
Temperature: 6 - 24 Windspeed: 2 - 19
29
What is the 2015 temperature and windspeed range for Leeming?
Temperature: 4 - 23 Windspeed: 3 - 17
30
What is the 2015 temperature and windspeed range for Leuchars?
Temperature: 4 - 19 Windspeed: 3 - 23
31
Why does Heathrow have the highest temperature of UK stations ?
Heathrow has the biggest UK airport
32
Why does Leuchars have the highest windspeed values ?
There is the effect of the sea breeze
33
What is expected of Jacksonville compared to the UK?
High temperatures and more rainfall and moderate wind speeds
34
What is expected of Bejing compared to the UK?
High and varied temperatures (not as high as Jacksonville)
35
What is expected of Perth compared to the UK?
Seasons are reversed and high wind speeds
36
Why is it hard to use random sampling on the large data set?
Some values are missing