Fig. 2: Trends in HCl+ClONO2 from ACE-FTS as a function of latitude and altitude. | Communications Earth & Environment

Fig. 2: Trends in HCl+ClONO2 from ACE-FTS as a function of latitude and altitude.

From: Chlorinated very short-lived substances offset the long-term reduction of inorganic stratospheric chlorine

Fig. 2

Trends are for 2004-2 to 2020-12. The magenta boxes mark the approximate regions of 3- and 5.5-year-old air at mid-latitudes (35°–55° in each hemisphere; older air is at higher altitudes for a fixed latitude). The height of each box is 3 km, corresponding to the vertical resolution of the AoA observations. A Trends calculated with a standard MLR. B Trends calculated with the N2O MLR, which uses N2O as a proxy for dynamical variability. Hatching denotes statistically insignificant trends at the 2σ level.

Back to article page