Skip to Main content Skip to Navigation
Journal articles

The effects of anthropogenic and volcanic aerosols and greenhouse gases on twentieth century Sahel precipitation

Abstract : There is little scientific consensus on the importance of external climate forcings—including anthropogenic aerosols, volcanic aerosols, and greenhouse gases (GHG)—relative to each other and to internal variability in dictating past and future Sahel rainfall. We address this query by relating a 3-tiered multi-model mean (MMM) over the Climate Model Intercomparison Project phase 5 "twentieth century" and pre-Industrial control simulations to observations. The comparison of single-forcing and historical simulations highlights the importance of anthropogenic and volcanic aerosols over GHG in generating forced Sahel rainfall variability in models. However, the forced MMM only accounts for a small fraction of observed variance. A residual consistency test shows that simulated internal variability cannot explain the residual observed multidecadal variability, and points to model deficiency in simulating multidecadal variability in the forced response, internal variability, or both.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03726978
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Thursday, July 28, 2022 - 9:36:18 AM
Last modification on : Tuesday, August 2, 2022 - 4:03:33 AM

File

s41598-020-68356-w.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Rebecca Jean Herman, Alessandra Giannini, Michela Biasutti, Yochanan Kushnir. The effects of anthropogenic and volcanic aerosols and greenhouse gases on twentieth century Sahel precipitation. Scientific Reports, 2020, 10, ⟨10.1038/s41598-020-68356-w⟩. ⟨insu-03726978⟩

Share

Metrics

Record views

0

Files downloads

0