ArticleScientific reports2024
Zonal control on Holocene precipitation in northwestern Madagascar based on a stalagmite from Anjohibe.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 8 citations in OpenAlex.
- Mid-Holocene aridity recorded in pygmy hippo and giant tortoise bone from southwest Madagascar.Proceedings. Biological sciences · 2025Article
- Patterns of late Holocene and historical extinctions on Madagascar.Cambridge prisms. Extinction · 2025Review
- Atlantic Ocean thermal forcing of Central American rainfall over 140,000 years.Nature communications · 2024Article
- Holocene palaeoclimate.Scientific reports · 2024Article
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Authors and funding
8 authors at 5 institutions in 3 countries.
Funding
Abstract
The Malagasy Summer Monsoon is an important part of the larger Indian Ocean and tropical monsoon region. As the effects of global warming play out, changes to precipitation in Madagascar will have important ramifications for the Malagasy people. To help understand how precipitation responds to climate changes we present a long-term Holocene speleothem record from Anjohibe, part of the Andranoboka cave system in northwestern Madagascar. To date, it is the most complete Holocene record from this region and sheds light on the nature of millennial and centennial precipitation changes in this region. We find that over the Holocene, precipitation in northwestern Madagascar is actually in phase with the Northern Hemisphere Asian monsoon on multi-millennial scales, but that during some shorter centennial-scale events such as the 8.2 ka event, Anjohibe exhibits an antiphase precipitation signal to the Northern Hemisphere. The ultimate driver of precipitation changes across the Holocene does not appear to be the meridional migration of the monsoon. Instead, zonal sea surface temperature gradients in the Indian Ocean seem to play a primary role in precipitation changes in northwestern Madagascar.
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