As part of the Montreal Protocol, the WMO is required to “convene appropriate panels of experts [who] will report their conclusions” at least every four years. The Executive Summary of the “2022” Scientific Assessment was just released. The full report will be released in the coming months.

“Measurements show unambiguous increases in upper stratospheric ozone for 2000–2020 outside of the polar regions.”

“Recovery of Antarctic stratospheric ozone continues to progress.”

“No statistically significant signature of recovery in Arctic stratospheric ozone over the 2000–2021 period has yet been detected.”

“The impending loss of vertically resolved, global spaceborne measurements of ozone-related atmospheric constituents (e.g., reactive chlorine, water vapor, and long-lived transport tracers) will impede the ability to monitor and explain changes in the stratospheric ozone layer in the future.”