Fig. 5
Estimated construction and destruction dates for the n = 2,121 CAFOs detected in California. CAFOs are detected in 2017 imagery; imagery is then traced forward and backward in time to estimate construction and destruction dates. Each panel represents facilities that have similar construction and destruction profiles: “Construction Bounds Only” indicates the facility was built after the first available imagery and exists through the last available imagery (2022); “Destruction Bounds Only” contains facilities that existed before the first available imagery and ceased to exist at some point during available imagery; “Neither” captures facilities that existed before first available imagery and in last available imagery; “Both” has facilities that were built after our first available imagery and no longer exist at some point in available imagery. Gray shading to the left indicates time periods when facilities may have existed, but we do not have available imagery to check this. Within each panel, CAFOs with the same construction / destruction profiles are grouped into a single line, with line weight indicating the total number of CAFOs in that grouping. Green dashed lines represent the time range between the lower and upper bounds on the construction date based on available imagery; red dashed lines represent the time range between lower and upper bounds on the destruction date. Time between the upper bound of construction and lower bound of destruction (if relevant) is represented by a solid line, indicating the period of time in which we are most confident that the facility existed. For CAFOs with no evident destruction event, the terminus of the solid line has no dashed red bounds.The largest grouping of CAFOs is those that have a construction upper bound in 1998, with no construction lower bound (i.e. detected in all available imagery) and no evidence of destruction.
