Assertion: water vapor's effect | /r/HasProperty | measured across over 4,000 reporting stations
Facets:
value: in the continental united states
type: LOCATION
Source sentences:
text: Researcher David J. Travis, an atmospheric scientist at the University of Wisconsin-Whitewater, wrote in the science journal Nature that the effect of the change in aircraft contrail formation during the three days after the September 11 attacks was observed in surface temperature change, measured across over 4,000 reporting stations in the continental United States.