Large Data Set Flashcards
(15 cards)
What is daily total rainfall measured in
mm
What is daily mean temperature measured in
Degrees celcius
What is daily total sunshine measured in
Hours
What is daily maximum relative humidity
The percentage of air saturation with water vapour
What is daily maximum relative humidity measured in
Percentages
What is the unit for the daily mean windspeed
Knots / kn (nautical mile per hour)
What is 1 kn equivalent to
1.15 mph
What are the units for wind and gust direction
In bearings degrees, in cardinal directions
What is the Beaufort scale
0 - calm < 1kn
1-3 - light 1-10kn
4 - moderate 11-16kn
5- fresh - 17-21kn
What is visibility
How far can be seen into the horizon during daylight hours
What is the unit for visibility
In decametres
1Dm = 10m
What is daily mean pressure measured in
In hectoPascals (hPa)
What is daily mean total cloud cover measured in
In oktas
The number of 1/8ths of the sky is covered
0/8 - 8/8
What does n/a mean
Not available
What does tr mean
Trace
<0.05mm
