Large Data Set

What is a trace (tr)?

If the total rainfall collected is below 0.05mm

What is relative humidity?

How close the air is to being saturated with water vapour (as a percentage)

What relative humidities are associated with mist and fog?

95% and above

What is daily mean windspeed measured in?

Knots. 1 knot = 1.15 mph

What is the Beaufort scale?

System for estimating the windspeed based on visual observation of sea and land conditions.

How does the Beaufort scale range?

From 0 (calm) to 12 (hurricane)

How many knots is considered a level 12?

Above 64 (hurricane)

How many knots is considered a level 6?

22-27 (strong breeze - large branches in motion, whistling)

How many knots is considered a level 10?

48-55 (storm - trees are uprooted)

At what level on the Beaufort scale does danger start to arise?

Level 8 (Gale, 34-40 knots)

What is maximum gust?

The highest speed the wind reached that day

What is cloud cover?

A fraction of the sky thats covered by clouds. It is measured in eights.

What is the unit for cloud cover?

oktas

What is pressure measured in?

Hectopascals (100 pascals/1 millibar)

For the first two weeks of May 1987, what will daily total sunshine, daily mean windspeed and daily maximum gust be in the UK?

n/a

What are the five UK weather stations?

Camborne, Leuchars, Heathrow, Hurn, Leeming

What are the three overseas weather stations?

Beijing, Jacksonville, Perth