Large Data Set Flashcards
What years does the large data set have?
1987 and 2015
What months are there data for?
May to October
What places in the UK are there data for?
Leuchars, Leeming, Heathrow, Hurn, Cambourne
What places globally are there data for?
Jacksonville, Perth, Beijing
What is the daily mean temperature measured in?
°C
What time is the daily mean temperature measured from?
0900 - 0900 (24 hrs)
Expected reading for daily mean temperature
8-30°C
What is the daily mean rainfall measured in?
mm
What time is the daily mean temperature measured from?
0900 - 0900 (24 hrs)
Expected reading for daily mean rainfall?
40-60 mm
What does tr mean (daily mean rainfall)?
tr - trace
less than 0.05mm
What is the daily total sunshine measured in?
hours
Expected reading for daily total sunshine?
0-24 hours
What is it called when the reading is +95% (daily maximum relative humidity)?
mist or fog
What is the daily maximum relative humidity measured in?
% (percentage)
What are the four types of wind readings?
mean wind speed
max gust
mean wind direction
max gust direction
What is wind speed and wind direction measured in/by?
knots
degrees NESW
Expected reading for wind speed?
0 - 20 knots
How is visibility measured?
visiometer (2015)
visual observers
In metres
What is visibility?
distance an object can be seen in daylight or by the illumination of the moon
Expected reading for visibility?
reasonable distance in metres (dm)
What is pressure measured in?
Pascal (Pa)
Millibar (mb)
Expected reading for daily mean pressure?
900 - 1100 hPa
What is daily mean total cloud measured in?
oktas (1/8th - probability is 1/9)
Expected reading for daily mean total cloud?
Between 0-8 oktas
