Surface weather observing is a program of hourly and on-demand observations of the atmosphere, sky condition, present weather, temperature, wind, pressure and humidity, that is the backbone of the weather reporting and forecasting program.
(Surface weather; observing; ) (that; is; the backbone of the weather reporting and forecasting program) Context(that is,List([169, 176))):(Surface weather observing; is; a program of hourly and on-demand observations of the atmosphere, sky condition, present weather, temperature, wind, pressure and humidity)
that is,List([169, 176))
Surface weather that Surface weather observing
observing is is
the backbone of the weather reporting and forecasting program
a program of hourly and on-demand observations of the atmosphere, sky condition, present weather, temperature, wind, pressure and humidity