Details

Autor(en) / Beteiligte

• Morgenstern, Olaf
• O'Connor, Fiona M
• Johnson, Ben T
• Zeng, Guang
• Mulcahy, Jane P
• Williams, Jonny
• Teixeira, Joao
• Michou, Martine
• Nabat, Pierre
• Horowitz, Larry W
• Naik, Vaishali
• Sentman, Lori T
• Deushi, Makoto
• Bauer, Susanne E
• Tsigaridis, Kostas
• Shindell, Drew T
• Kinnison, Douglas E

Titel

Reappraisal of the Climate Impacts of Ozone‐Depleting Substances

Ist Teil von

• Geophysical research letters, 2020-10, Vol.47 (20), p.n/a

Ort / Verlag

Goddard Space Flight Center: Wiley / American Geophysical Union

Erscheinungsjahr

2020

Link zum Volltext

Quelle

Wiley Online Library

Beschreibungen/Notizen

• We assess the effective radiative forcing due to ozone‐depleting substances using models participating in the Aerosols and Chemistry and Radiative Forcing Model Intercomparison Projects (AerChemMIP, RFMIP). A large intermodel spread in this globally averaged quantity necessitates an “emergent constraint” approach whereby we link the radiative forcing to ozone declines measured and simulated during 1979–2000, excluding two volcanically perturbed periods. During this period, ozone‐depleting substances were increasing, and several merged satellite‐based climatologies document the ensuing decline of total‐column ozone. Using these analyses, we find an effective radiative forcing of −0.05 to 0.13 W m−2. Our best estimate (0.04 W m−2) is on the edge of the “likely” range given by the Fifth Assessment Report of IPCC of 0.03 to 0.33 W m−2 but is in better agreement with two other literature results.