Counterintuitively, the atmospheric temperature dropped to normal levels much more quickly at the larger impact sites than at the smaller sites: at the larger impact sites, temperatures were elevated over a region wide, but dropped back to normal levels within a week of the impact. At smaller sites, temperatures 10 K (10 °C; 18 °F) higher than the surroundings persisted for almost two weeks. Global stratospheric temperatures rose immediately after the impacts, then fell to below pre-impact temperatures 2–3 weeks afterwards, before rising slowly to normal temperatures.
counterintuitively the atmospheric temperature dropped to normal levels much more quickly at the larger impact sites than at the smaller sites at the larger impact sites temperatures were elevated over a region wide but dropped back to normal levels within a week of the impact at smaller sites temperatures 10 k (10 °c; 18 °f) higher than the surroundings persisted for almost two weeks global stratospheric temperatures rose immediately after the impacts then fell to below pre-impact temperatures 2–3 weeks afterwards before rising slowly to normal temperatures