large data set

where are the UK weather stattions?

Camborne, Hurn, Heathrow, Leeming, Leuchars

where are the overseas weather stations?

Beijing, Jacksonville, Perth

which years does it cover?

1987 and 2015

which months does it cover?

May to October

what is recorded in UK weather stations?

• mean temp

• total rainfall

• total sunshine

• max humidity

• mean windspeed

• max gust

• mean wind direction

• max gust direction

• cloud cover

• pressure

• visibility

what is recorded in overseas weather stations?

• mean temp

• total rainfall

• mean pressure

• mean windspeed

daily mean temp

degrees celsius

daily total rainfall

millimetres (mm)

trace/tr is when there was less than 0.05 - should be changed to 0 when cleaning

daily total sunshine

hours (hrs)

amount of bright sunshine recorded

daily maximum relative humidity

percentage (%)

how close the air is to being saturated with water vapour

above 95% - mist and fog

daily mean windspeed

knots (kn)

1kn - 1.15mph

also uses the Beaufort scale from 0 (calm) to 12 (hurricane)

light (1-3)

moderate (4)

fresh (5)

daily maximum gust

knots (kn)

1kn - 1.15mph

also uses the discrete Beaufort scale from 0 (calm) to 12 (hurricane)

light (1-3)

moderate (4)

fresh (5)

daily mean wind direction

degrees from true north

if blowing FROM this south, this would be 180

also listed as cardinal directions - NSEW

daily maximum gust direction

degrees from true north

if blowing FROM this south, this would be 180

also listed as cardinal directions - NSEW

cloud cover

in eights (Oktas)

discrete scale from 0 (completely clear) to 8 (completely overcast)

how much of the sky is covered in clouds

pressure

hectopascals (hPa)

1hPa - 100Pa

visibility

decametres (Dm)

1Dm - 10m

defined by the greatest distance at which an object can be seen and recognized in daylight

what does n/a or a - mean

data not available, when cleaning data, these should be removed

which data has n/a

• sunshine

• windspeed

• max gust

what happened in October 1987 in the UK

a storm - higher rainfall