Chapter 1 - Large Data Set - Year 1

Question 1

What happened in October 1987?

Answer 1

The biggest storm in the UK for 300 years

Question 2

When was the big storm?

Answer 2

October 1987

Question 3

What does a northerly wind mean?

Answer 3

A wind that comes from the north

Question 4

What does clean the data mean?

Answer 4

Get rid of any anomalous results
Assume that tr = 0.025mm

Question 5

What does tr mean?

Answer 5

There wasn’t enough rainfall to justify measuring so there is no exact value
We say that this is 0.025mm of rain

Question 6

What is the problem of tr?

Answer 6

If there are a lot of them they could screw the data

Question 7

Where are the weather stations?

Answer 7

Leuchars
Leeming
Heathrow
Hurn
Camborne
Jacksonville
Beijing
Perth

Question 8

What is the most northern weather station in the UK?

Answer 8

Leuchars

Question 9

What is the most eastern weather station in the UK?

Answer 9

Heathrow

Question 10

What is the most southern weather station in the UK?

Answer 10

Camborne

Question 11

What is the most western weather station in the UK?

Answer 11

Camborne

Question 12

Which is more northern Beijing or Jacksonville?

Answer 12

Beijing

Question 13

What is the most southern weather station in the world?

Answer 13

Perth

Question 14

Describe Leuchars?

Answer 14

It has the lowest average temperatures and it is the most northern weather station

Question 15

What is special about Leeming?

Answer 15

It is dry and almost semi arid

Question 16

What is special about Heathrow?

Answer 16

It is far enough away from the city that the temperature isn’t raised by the “urban heat island” effect
It is below average rainfall of Great Britain
It has relatively hotter summer temperatures

Question 17

What is special about Hurn

Answer 17

Near to the coast
Rainfall well below the average

Question 18

What is special about Camborne?

Answer 18

It has the mildest and sunniest climate in the UK
In places it is sub-tropical due to its Southern nature and its proximity to the gulf stream
Rainfall is not uncommon
It doesn’t have extreme temperatures

Question 19

What is special about Beijing?

Answer 19

Due to the Monsoon season summers are humid
Cold windy but dry winters

Question 20

What is special about Jacksonville?

Answer 20

Humid subtropical climate
Winters are mild sunny and rarely sub zero

Summers are usually very hot humid and stormy, torrential downpours
High humidity which makes high heat indices common in the summer

Question 21

What is special about Perth?

Answer 21

Mediterranean climate
Winters are cool and wet
Summers are hot, dry and sunny

Question 22

What is wind speed measured in?

Answer 22

Knots
Or
The Beaufort Scale

Question 23

1kn =

Answer 23

1 knot = 1.15mph

Question 24

What are the numerical values in the Beaufort scale?

Answer 24

0 = calm <1kn
1-3 = Light 1-10kn
4 = moderate 11-16kn
5 = Fresh 17-21kn

Question 25

What does mean visibility mean?

Answer 25

How far can be seen into the horizon during daylight hours

Question 26

What is mean visibility measured in?

Answer 26

Dm

Question 27

1Dm

Answer 27

1Dm = 10 meters

Question 28

How can you describe wind direction?

Answer 28

Bearing
Compass points (eg NEN)

Question 29

What is pressure measured in?

Answer 29

hectopascal (hPa)

Question 30

What is the measurement of mean cloud cover?

Answer 30

Oktas meaning the number of 1/8th of the sky is covered

Question 31

How many different values does the Oktas have?

Answer 31

0-8 so 9 values

Question 32

What is humidity?

Answer 32

The % of air saturation with water vapour

Question 33

What is maximum gust?
What is it measured in?

Answer 33

The highest instantaneous wind speed

Measured in Kn

Question 34

What is total sunshine rounded to?

Answer 34

1/10 of an hour

Question 35

What is temperature measured in?

Answer 35

Celsius

Question 36

Why may a simple sample not work?

Answer 36

The isn’t data for all days