Large Data Set

Where are the locations for the LDS?

(5 in the UK, 3 abroad)

1. Camborne

2. Heathrow

3. Hurn

4. Leeming

5. Leuchars

6. Beijing

7. Jacksonville

8. Perth

Where is Jacksonville?

Jacksonville, Florida, USA, SE (by the sea)

expect high temperatures, more rainfall here than in the UK and moderate windspeeds

Where is Perth?

Perth, Western Australia, Australia, W - SOUTHERN HEMISPHERE

Expect high windspeeds and low temperatures (winter)

Where is Beijing?

Beijing, Capital of China, NW (ish)

High temperatures are expected here with values similar to Jacksonville

Where is Heathrow?

Heathrow, London, UK, S, inland

Where is Leeming?

Leeming, North Yorkshire, UK, Midlands

Where is Camborne?

Camborne, Cornwall, UK, S

Where is Leuchars?

Leuchars, Fife, Scotland, UK

Where is Hurn?

Hurn, Hampshire, Dorset, England, UK

What are the weather variables?

• Daily mean temperature

• Daily total rainfall

• Daily total sunshine

• Daily maximum relative humidity

• Daily mean windspeed, daily maximum gust, daily mean wind direction and daily maximum gust direction

• Cloud cover

• Visibility

• Pressure

Pressure units

Hectopascal (hPa) - equivalent to 1 mb

Visibility unit

Decametres (dam)

Cloud cover units

Oktas (eighths)

(0→ clear, 8→ completely overcast)

Wind speed units

Knots

(Daily mean speed averaged over 24hours from 00:00 GMT)

Daily total sunshine unit

Hours and tenths

Daily maximum relative humidity unit

Percentage, %

Daily total rainfall unit

Millimetres (mm)

(Daily totals refer to 24hour periods, commencing at 09:00 GMT)

Daily mean temperature unit

Degrees and tenths, Degree Celsius (C )

What does ‘tr’ stand for?

If the amount of rainfall recorded is less than 0.05mm, it is recorded as ‘tr’. This stands for a trace (tr) of rain. If a reading is not available, it is recorded as ‘n/a’

What are values above 95% associated with?

Mist and fog

If the relative humidity is 100%, then the air is fully saturated and condensation can occur.

Daily mean wind direction unit

Degrees, relative to true north

Values rounded to the nearest 10 degrees

Daily maximum gust direction unit

Degrees, relative to true north

Blowing in the hour the corresponding daily maximum gusts occurred

When was the data collected?

May-October 1987

May-October 2015