Using human observations with instrument-based metrics to understand changing rainfall patterns

Savo, V., Kohfeld, K. E., Sillmann, J., Morton, C., Bailey, J., Haslerud, A. S., Le Quéré, C. ORCID: https://orcid.org/0000-0003-2319-0452 and Lepofsky, D. (2024) Using human observations with instrument-based metrics to understand changing rainfall patterns. Nature Communications, 15. ISSN 2041-1723

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Abstract

Shifting precipitation regimes are a well-documented and pervasive consequence of climate change. Subsistence-oriented communities worldwide can identify changes in rainfall patterns that most affect their lives. Here we scrutinize the importance of human-based rainfall observations (collated through a literature review spanning from 1994 to 2013) as climate metrics and the relevance of instrument-based precipitation indices to subsistence activities. For comparable time periods (1955-2005), changes observed by humans match well with instrumental records at same locations for well-established indices of rainfall (72% match), drought (76%), and extreme rainfall (81%), demonstrating that we can bring together human and instrumental observations. Many communities (1114 out of 1827) further identify increased variability and unpredictability in the start, end, and continuity of rainy seasons, all of which disrupt the cropping calendar, particularly in the Tropics. These changes in rainfall patterns and predictability are not fully captured by existing indices, and their social-ecological impacts are still understudied.

Item Type: Article
Additional Information: Funding information: V.S. was supported by the Government of Canada/avec l’appui du gouvernement du Canada, the Tula Foundation (Heriot Bay, BC, Canada) through the Hakai Institute (Heriot Bay, BC, Canada) and the Department of Education Science, University Roma Tre. K.E.K. was supported by the NSERC Canada Research Chair programme and NSERC Discovery Grant R832686. J.S. and A.S.H. were supported by the Research Council of Norway grant 244551/E10 (CiXPAG). J.S. further acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy - EXC 2037: “CLICCS-Climate, Climatic Change, and Society” - Project Number: 390683824, contribution to the Center for Earth System Research and Sustainability (CEN) of Universität Hamburg. C.L.Q. was supported by the UK Royal Society (Grant RP\R1\191063).
Faculty \ School: Faculty of Science > School of Environmental Sciences
University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups: University of East Anglia Schools > Faculty of Science > Tyndall Centre for Climate Change Research
Faculty of Science > Research Centres > Tyndall Centre for Climate Change Research
Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences
Depositing User: LivePure Connector
Date Deposited: 12 Nov 2024 14:31
Last Modified: 12 Nov 2024 14:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/97652
DOI: 10.1038/s41467-024-53861-7

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