Large data set

What are the 5 UK weather stations?

1. Leuchars

2. Leeming

3. Heathrow

4. Hurn

5. Camborne

What are the 3 overseas weather stations?

1. Jacksonville, USA

2. Beijing, China

3. Perth, Australia

Units for daily mean temperature

Degrees celsius

Amount of rainfall below which the day is recorded as ‘tr’

0.05mm

What is daily total sunshine recorded to?

Nearest 10th of an hour

What are daily mean windspeed and maximum gust measured in?

Knots

1 knot =

1.15 mph

4 terms of the Beaufort scale

1. Calm (0 & <1 knot)

2. Light (1-3 & 1-10 knots)

3. Moderate (4 & 11-16 knots)

4. Fresh (5 & 17-21 knots)

Relative humidities above this give rise to misty and foggy conditions

95%

What is daily mean cloud cover measured in?

Oktas (8ths of sky covered by cloud)

What is daily mean visibility measured in?

Decameters (Dm) - the greatest hz distance @ which an object can be seen in daylight

What is daily mean pressure measured in?

Hectopascals (hPa)

What happened in mid-October 1987 that may skew some UK data?

The great storm of 1987 - wind speeds increased; south particularly affected

Data cleaning

Considering and removing from calculations days that have missing recordings - not every day has a recording for every variable