Attendees also discussed complicated problems, including
hydroclimatic responses to situations where anomalous events like the 2015 — 2016 El Niño are superimposed onto long - term heterogeneous ocean - warming patterns.
Although important differences must be acknowledged — for example, the causes and the amplitudes of the warming, and the probable impacts of land cover change on temperatures — the medieval droughts can provide some direct evidence of the Southwest
hydroclimatic response to warming and a plausible, but conservative, worst - case scenario to be considered in sustainable water - resource planning.