The Large data set

Question 1

When is the data for ?

Answer 1

May-Oct 1987 and 2015

Question 2

What are the 4 main variables ?

Answer 2

daily mean air temp
daily mean pressure
daily mean windspeed
rainfall (24hr total)

Question 3

What is daily mean air temp measured in ?

Answer 3

degrees celsius to 1dp

Question 4

What does the daily mean air temp range from ?

Answer 4

3 - 33

Question 5

What is daily mean pressure measured in ?

Answer 5

hPa (hectopascals) to whole number

Question 6

What does high pressure and low pressure mean ?

Answer 6

high = good weather
low = bad weather

Question 7

What is daily mean windspeed measured in ?

Answer 7

knots (Kn) to 1dp

Question 8

What is 1Kn in mph

Answer 8

1.15mph

Question 9

What is the Beaufort scale ?

Answer 9

0 = calm = <1Kn
1-3 = light/moderate = 1-10Kn
4 = fresh = 11-16Kn
5 = strong = 17-21Kn

Question 10

What are the UK only variables ?

Answer 10

daily total sunshine
daily max relative humidity
visibility
daily max gust
daily mean total cloud
daily mean wind direction and daily max gust direction

Question 11

What is daily total sunshine measured in ?

Answer 11

hrs to 1/10 of an hr

Question 12

What does daily total sunshine range from ?

Answer 12

0 and 16 hrs

Question 13

What is daily max relative humidity measured in ?

Answer 13

a %

Question 14

What does 100% mean for daily max relative humidity ?

Answer 14

air is fully saturated with water vapour

Question 15

What does 95% + mean for daily max relative humidity ?

Answer 15

mist and fog

Question 16

What is meant by visibility ?

Answer 16

how far can be seen horizontally

Question 17

What is visibility measured in ?

Answer 17

decameters (Dm) to 100

Question 18

What is mist in visibility ?

Answer 18

> 200 Dm

Question 19

What is fog in visibility ?

Answer 19

> 100 Dm

Question 20

What is meant by daily max gust ?

Answer 20

instantaneous speed in knots

Question 21

What is the range for daily max gust ?

Answer 21

8 - 50

Question 22

What is the max daily max gust ?

Answer 22

78kn in a storm

Question 23

What is daily mean total cloud measured in and what is the range ?

Answer 23

oktas
0-8

Question 24

What is daily mean wind direction and daily max gust direction ?

Answer 24

direction it comes from

Question 25

What is daily mean wind direction and daily max gust direction measured in ?

Answer 25

bearings to the nearest 10 degree also given in cardinal direction

Question 26

What is 0 written as in daily mean wind direction and daily max gust direction ?

Answer 26

360