subdaily

metadata

property	value
name	subdaily
original name	synop
description	SYNOP reports, made at their native three-hourly interval.

datasets

data

metadata

property	value
name	data
original name	synop
grouped	True
periods	historical

parameters

name	original name	description	unit
wind_direction	dd	Direction the wind is blowing from, clockwise from true north.	degree
wind_speed	ff	Mean speed of the wind over the period.	meter_per_second
wind_gust_max	raf10	Speed of the strongest gust of the period.	meter_per_second
temperature_air_mean_2m	t	Mean air temperature at 2 m above ground.	degree_kelvin
temperature_dew_point_mean_2m	td	Dew point at 2 m above ground, the temperature at which the air would become saturated.	degree_kelvin
temperature_air_min_2m_last_24h	tn24	Minimum air temperature at 2 m above ground over the preceding 24 hours.	degree_kelvin
temperature_air_max_2m_last_24h	tx24	Maximum air temperature at 2 m above ground over the preceding 24 hours.	degree_kelvin
humidity	u	Relative humidity of the air, the fraction of the moisture it could hold at that temperature.	percent
visibility_range	vv	Horizontal distance at which an object can still be made out.	meter
cloud_cover_total	n	Fraction of the sky covered by cloud of any kind.	percent
pressure_air_site	pres	Air pressure as measured at station height.	pascal
pressure_air_sea_level	pmer	Air pressure reduced to mean sea level, so that stations at different heights compare.	pascal
precipitation_height_last_1h	rr1	Depth of precipitation collected over the preceding hour.	millimeter
precipitation_height_last_3h	rr3	Depth of precipitation collected over the preceding 3 hours.	millimeter
precipitation_height_last_6h	rr6	Depth of precipitation collected over the preceding 6 hours.	millimeter
precipitation_height_last_12h	rr12	Depth of precipitation collected over the preceding 12 hours.	millimeter
precipitation_height_last_24h	rr24	Depth of precipitation collected over the preceding 24 hours.	millimeter