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20 Terms
where are the UK weather stattions?
Camborne, Hull, 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)
1 knot is 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)
1 knot is 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 is 10m
defined by the greatest distance at which an object can be seen and recognized in daylight
what does n/a or a - mean
this means a reading is 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