Large Data set

UK locations north to south

Leuchars

Leeming

Heathrow

hurn

Camborne

Abroad places and what countries they are in

NORTHERN HEMISPHERE

Jacksonvillle, USA

China, Beijing

SOURHERN HEMISPHERE

Perth, Australia

when do we have data from

May-Oct

1987 + 2015

which UK locations are coastal and what does this mean

Camborne

Leuchars

Means they’re windier

If temp increases

sunshine increases

rainfall decreases

wind speed decreases

As we move further north may to Oct

Temp decreases

Rainfall increases

Max hours of sunshine increases

Avg number hours sunshine decreases

daily mean temperature

measured in degrees celcuis

rounded to 1dp

avg of the hourly temp readings during a 24h period

typical - 5-24

daily total rainfall

includes solid precipitation like snow and hail which is melted before measured

measured in mm

0-20mm

Not symmertricsk many 0 and tr values

what is tr

amounts less than 0.05mm recorded as tr/trace

daily total sunshine

hours

Recorded to nearest 10th of an hour

0-14 hours

Cloud cover

Measured in oktas/ eigths of the sky covered by cloud

0-8

Uses intergers

Humidity

%

Given as % of air saturation with water vapour

770-100%

Uses intergers

Relative humidities above 95% cause mist and foggy conditions

Daily mean visibility

Decametres

How far you can see

200-4,000dm

1Dm =10m

Rounded to nearest 100

Daily mean pressure

How much atmosphere is pushing down

hPa (hectopascals)

990 - 1040hPa

Integers

Cleaning data

If we see tr we can replace it with 0 or 0.025

If we see n/a we need to remove this data

knot (kn)

is a nautical mile per hour

1kn = 1.15mph

Daily mean wind speed (quantitative)

averages over 24hours from midnight to midnight

knots (kn)

3-10kn

Intergers only

Daily mean wind speed (qualitative)

Beaufort conversion

Includes - calm, light, moderate, fresh

Most days are light

Typical light to moderatE

Beaufort conversion

Daily max gust

Strongest gust that day

kn (knots)

8-50kn

Intergers only

Wind/gust direction (bearings)

Which direction wind is blowing from

10 to 360 degreees

Multiples of 10 only

Wind/gust direction (cardinal)

Which direction wind is blowing FROM

Compass direction

E.g.. N, SW, ENE

specia stuff about Jacksonville, Florida, USA

Hot summers

Hurricanes in October (but mean windsprrd still relatively low in our data)

Facts about Perth Australia

Flipped seasons

Facts ABT Beijing China

Hotter wetter summers

Colder winters

Wind speed abroad

Rounded to 1dp

Beaufort conversions abroad

Mostly light

Notable instances

Great storm of 1987 - happened 15Th-16th Oct

Brought heavy rain and wind speeds

IN UK

trace

rainfall recorded less than 0.05mm

Higher pressure associated with

Good weather

Lower pressure associated with

Rain,cold and cloud