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Historical Tropospheric and Stratospheric Ozone Radiative Forcing Using the CMIP6 Database
Author(s) -
ChecaGarcia Ramiro,
Hegglin Michaela I.,
Kinnison Douglas,
Plummer David A.,
Shine Keith P.
Publication year - 2018
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1002/2017gl076770
Subject(s) - stratosphere , ozone layer , environmental science , atmospheric sciences , shortwave , coupled model intercomparison project , ozone , longwave , climatology , forcing (mathematics) , radiative forcing , tropospheric ozone , quasi biennial oscillation , northern hemisphere , ozone depletion , troposphere , radiative transfer , climate model , meteorology , aerosol , climate change , physics , geology , quantum mechanics , oceanography
We calculate ozone radiative forcing (RF) and stratospheric temperature adjustments for the period 1850–2014 using the newly available Coupled Model Intercomparison Project phase 6 (CMIP6) ozone data set. The CMIP6 total ozone RF (1850s to 2000s) is 0.28 ± 0.17 W m −2 (which is 80% higher than our CMIP5 estimation), and 0.30 ± 0.17 W m −2 out to the present day (2014). The total ozone RF grows rapidly until the 1970s, slows toward the 2000s, and shows a renewed growth thereafter. Since the 1990s the shortwave RF exceeds the longwave RF. Global stratospheric ozone RF is positive between 1930 and 1970 and then turns negative but remains positive in the Northern Hemisphere throughout. Derived stratospheric temperature changes show a localized cooling in the subtropical lower stratosphere due to tropospheric ozone increases and cooling in the upper stratosphere due to ozone depletion by more than 1 K already prior to the satellite era (1980) and by more than 2 K out to the present day (2014).