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• Weather characteristics

  • Windier
  • Wetter
  • Darker
  • Colder
  • Calmer
  • Drier
  • Brighter
  • Hotter
• We only have data for May to October. We have data from 1987 and 2015, so can compare the same month in two different years.
• Locations (alphabetical order except H and H switch)

  • Camborne (coastal – windier)
  • Hurn
  • Heathrow
  • Leeming
  • Leuchars (coastal – windier)
• If the temperature increases

  • The amount of sunshine increases
  • The amount of rainfall increases
  • The windspeed increases
• As we move further north, during May to October

  • The temperature decreases
  • The amount of rainfall increases
  • The maximum hours of sunshine decreases
• Measurement

  • Daily mean temperature
  • Daily total rainfall
  • Daily total sunshine
  • Cloud cover
  • Humidity
  • Daily mean visibility
  • Daily mean pressure
• Daily mean temperature

  How hot it is/ measured in degrees / ranges between 5 - 24 degrees
• Daily total rainfall

  How much it rained: measured in mm / ranges between 0 - 20mm / not symmetrical many 0 and tr values
• Daily total sunshine

  How many hours of sunshine / measures in hours / ranges between 0 - 14 hrs / more sun in the summer
• Cloud cover

  How much of the sky is covered in clouds/ measured in oktas / ranges from 0 to 8 / measured in integers measures what fraction of the sky is covered.
• Humidity

  How much water vapour is in the air / above 95% is associated with fog / measured in % / between 70 - 100 %
• Daily mean visibility

  How far you can see / measured in Dm ( 1Dm=10m )/ ranges between 200 - 4000 Dm / round to the nearest 100
• Daily mean pressure

  How much the atmosphere is pushing down / Measured in hPa / ranges between 990 to 1040 hPa / intergers
• 'tr' means there was a trace of water in the measuring instrument – it is used for values of rainfall, 0 < 𝑟 ≤ 0.05
• We can 'clean' data, which means replacing 'tr' with either 0 mm or 0.025 mm.
• If we have n/a in any of our data, we cannot use it. Cleaning it means to remove that entry.
• Wind measurements

  • Daily mean windspeed
  • Windspeed, Beaufort conversion
  • Daily maximum gust
  • Wind/gust direction (bearings)
  • Wind/gust direction (cardinal)
• Daily mean windspeed

  How windy it is / measured in kn (knots) / ranges between 3 - 10 kn / integers only
• Windspeed, Beaufort conversion

  Qualitative (Light to Moderate) / Most days are light
• Daily maximum gust

  The strongest gust of wind that day / measured in kn / ranges between 8 - 50 kn
• Wind/gust direction (bearings)

  Which direction the wind is blowing from / measured in degrees / ranges between 10 - 360 degrees / multiples of 10 only
• Wind/gust direction (cardinal)

  Which direction the wind is blowing from (compass direction)
• Jacksonville, Florida, USA has hot summers and hurricanes in October (but mean windspeed still relatively low in our data)
• Perth, Australia has flipped seasons
• Beijing, China has hotter, wetter summers and colder winters
• International Measurements

  • Daily mean temperature
  • Daily total rainfall
  • Daily mean pressure
  • Daily mean windspeed
  • Windspeed, Beaufort conversion