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Alevel Maths > Large data set > Flashcards

Large data set Flashcards

1
Q

What are the five UK weather stations?

A 
Camborne
Heathrow
Hurn
Leeming
Leuchars
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2
Q

What are the overseas weather stations?

A

Beijing
Jacksonville
Perth

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3
Q

What are the time periods given

A

May-october 1987

May-october 2015

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4
Q

Where is Jacksonville

A

North east of Floria in USA. Close to the sea.

Northern hemisphere.

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5
Q

Where is Beijing

A

North east of China

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6
Q

Where is leuchars

A
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7
Q

Where is Perth

A

Southern hemisphere in australia

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8
Q

Where is leeming

A
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9
Q

What is daily maximum temperature measured in

A

Degrees Celsius

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10
Q

What does n/a mean

A

That the reading is not available

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11
Q

Where is heathrow

A
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12
Q

What does a negative value indicate

A

Temperatures less than 0

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13
Q

What is total daily rainfall measure in

A

Millimetres

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14
Q

Where is hurn

A
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15
Q

What does tr stand for

A

Trace of rain

When total amount of rainfall is less than 0.05mm

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16
Q

Where is camborne

A
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17
Q

What are the LDS 11 variables

A 
Daily mean temperature 
Daily total rainfall
Daily total sunshine 
Daily maximum relative humidity 
Daily mean windspeed
Daily maximum gust
Daily mean wind direction
Daily maximum gust direction
Cloud cover
Visibility
Pressure
18
Q

How is daily total sunshine measures

A

Measured in hours to one decimal place

19
Q

For daily total sunshine what does 4.5 mean

A

4.5 hours

4 hours 30 minutes

20
Q

What is relative humidity

A

A measure of the saturation of water vapour in the atmosphere. Higher relative humidities indicates that the air contains more water vapour

21
Q

How are the values given for daily max relative humidity

A

As a percentage

22
Q

What does it mean if a value is above 95% for relative humidity

A

Associated with mist and fog

23
Q

How is pressure recorded

A

hectopascal (hPa) = 100 pascals
Pressure in meteorology is bar
1 bar =1000 millibars = 1 hectopascal

24
Q

What does it mean if relative humidity is 100%

A

The air is fully saturated and condensation occurs

25
Q

How is visibility measured and with what units

A

Measured horizontally, units are metres

N/A represented by /

26
Q

How is daily mean wind speed measured

A

In knots

27
Q

What is one knot in miles per hour

A

1.15 miles per hour

28
Q

What is cloud cover

A

This is a measure of the fraction of the celestial dome covered by cloud

29
Q

How is daily mean wind speed recorded

A

Using Beaufort scale

30
Q

How is cloud cover measured

A

It is measured in eigths, the technical unit is the okta

31
Q

What is a Beaufort scale

A

A non numerical and empirical scale that maps wind speeds to a number

32
Q

What is daily max gust

A

Max instantaneous speed that occured over a 24 hour period.

33
Q

What does a value of 0 oktas represent of cloud coverage

A

0 oktas represents a clear sky

8 oktas means complete overcast

34
Q

How is daily max gust measured

A

In knots

35
Q

What is the daily maximum gust direction

A

This is the direction the wind was blowing in the hour the corresponding daily maximum gust occurred

36
Q

What is daily mean wind direction

A

The value is given in degrees relative to true north
Corresponding cardinal direction is also given.
Values are rounded to nearest degrees

37
Q

How is daily maximum gust direction measured

A

Values given in degrees relative to true north

The corresponding cardinal direction also given

38
Q

What do your expect at Jacksonville

A

High temperatures
More rainfall that in the uk
Moderate wind speeds

39
Q

What do you expect at Beijing

A

High temperatures - similar to Jacksonville
Expect lower average temp than Jacksonville
More variation in tell

40
Q

What is expected in Perth in terms of weather

A

Southern hemisphere means seasons reversed
June-august winter
Located near sea so high windspeeds expected

Alevel Maths (1 decks)

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