Total column ozone trends from the NASA Merged Ozone time series 1979 to 2021 showing latitude-dependent ozone recovery dates (1994 to 1998)

Herman, Jay; Ziemke, Jerald; McPeters, Richard

doi:https://doi.org/10.5194/amt-16-4693-2023

Articles | Volume 16, issue 20

https://doi.org/10.5194/amt-16-4693-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-16-4693-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 20

Research article

|

16 Oct 2023

Research article |

| 16 Oct 2023

Total column ozone trends from the NASA Merged Ozone time series 1979 to 2021 showing latitude-dependent ozone recovery dates (1994 to 1998)

Jay Herman, Jerald Ziemke, and Richard McPeters

Data sets

SBUV Merged Ozone Data Set (MOD) S. M. Frith, P. K. Bhartia, L. D. Oman, N. A. Kramarova, R. D. McPeters, and G. J. Labow https://acd-ext.gsfc.nasa.gov/Data_services/merged/

MOD latitude band average time series J. Herman and L. Huang https://avdc.gsfc.nasa.gov/pub/DSCOVR/JayHerman/MOD_Ozone_Trends/

Short summary

Fourier series multivariate linear regression trends (% per decade) in ozone were estimated from the Merged Ozone Data Set (MOD) from 1979 to 2021 in two different regimes, from 1979 to T_A (the date when ozone stopped decreasing) and T_A to 2021. The derived T_A is a latitude-dependent date, ranging from 1994 to 1998. T_A(θ) is a marker for photochemistry dynamics models attempting to represent ozone change over the past 42 years.