The Upper Stratospheric Solar Cycle Ozone Response

Autor: Daniel R. Marsh, Fiona Tummon, William T. Ball, Douglas E. Kinnison, Daniel J. Mortlock, Justin Alsing, Joanna D. Haigh, Eugene Rozanov
Přispěvatelé: Natural Environment Research Council (NERC), Science and Technology Facilities Council, Science and Technology Facilities Council (STFC)
Rok vydání: 2019
Předmět:
Zdroj: Geophysical Research Letters, 46 (3)
ISSN: 1944-8007
0094-8276
DOI: 10.1029/2018gl081501
Popis: The solar cycle (SC) stratospheric ozone response is thought to influence surface weather and climate. To understand the chain of processes and ensure climate models adequately represent them, it is important to detect and quantify an accurate SC ozone response from observations. Chemistry climate models (CCMs) and observations display a range of upper stratosphere (1–10 hPa) zonally averaged spatial responses; this and the recommended data set for comparison remains disputed. Recent data‐merging advancements have led to more robust observational data. Using these data, we show that the observed SC signal exhibits an upper stratosphere U‐shaped spatial structure with lobes emanating from the tropics (5–10 hPa) to high altitudes at midlatitudes (1–3 hPa). We confirm this using two independent chemistry climate models in specified dynamics mode and an idealized timeslice experiment. We recommend the BASICv2 ozone composite to best represent historical upper stratospheric solar variability, and that those based on SBUV alone should not be used. ISSN:0094-8276 ISSN:1944-8007
Databáze: OpenAIRE