large data set Flashcards
(14 cards)
daily mean windspeed and daily maximum gust speed
> measured in kn (knots)
mean can be quantitative: light, moderate, fresh (beaufort conversion)
max gust is greatest instantaneous speed
n/a is no measurement
daily mean windspeed and max gust speed DIRECTION
> measured as bearing in deg to nearest 10
cardinal direction is NWSE and can be upto three letters eg NNE NEE or NE or N
visibility
> measured in dam (decameters) furthest horizontal distance visible.
“-“ indicates n/a
daily mean humidity
> % of how much water vapour could be in air
if greater than 95% indicates mist or fog
daily mean pressure
> measured in hPa (hecto Pascals)
small range
daily mean air temp
> measured in degrees C 1dp
n/a = no measurement
daily total rainfall
> in mm to 1dp
tr indicates less than 0.05 mm
includes hail and snow
daily total sunshine
> measured in hours and tenths
max is 15, min is 0
n/a is no measure
cloud cover
> measured in eights so 9 values 0-8
8 is the max, 0 is the min
beaufort conversion
light, moderate, fresh
uk locations n-s
Leuchars, Leeming, Heathrow, Hurn, Camborne
international locations, and hemisphere
Beijing U, Jacksonville U, Perth L
months and years included
May- Oct
2015, 1987
international data
daily mean temperature, daily total rainfall, daily mean
windspeed (incl beaufort conv) and daily mean pressure.
