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Savo, Valentina [1], Bailey, Joseph [2], Kohfeld, Karen [2], Sillmann, Jana [3], Lepofsky, Dana [4].

Local Observations of Rainfall Changes.

Climate change is a global problem with complex impacts on ecosystems and societies. The livelihoods of many communities that rely on local environments for their food and culture depend on predictable cycles of rains and seasons. We collated the observations by subsistence-oriented communities of climate change at the global level from more than 1000 studies. These communities are observing multiple changes in precipitation regimes, including enhanced drought and more extreme precipitation events. These have detrimental impacts on agriculture and other subsistence activities. Our comparison shows impressive matches between human observations and instrumental measures that inform global assessments of changes in drought and extreme rainfall.  However, some observed changes are not well captured by rainfall metrics and provide new insights on how regional rainfall changes are affecting communities. Some changes, such as disruptions to the seasonal cycles of rainfall, are of great concern for local communities but are yet not well studied. Our results show that climate change is having more disruptive effects at a local level than is highlighted by scientific research on climate and that local observations can make important contributions to understanding how climate change is affecting the lives of many subsistence-oriented communities.


1 - Simon Fraser University, Hakai Institute; Department of Archeology, 8888 University Drive, Burnaby, BC, V5A1S6, Canada
2 - Simon Fraser University, School of Resource and Environmental Management, 8888 University Drive, Burnaby, BC, V5A1S6, Canada
3 - Center for International Climate and Environmental Research – Oslo, Pb. 1129 Blindern, Oslo, N-0318 , Norway
4 - Simon Fraser University, Department of Archeology, 8888 University Drive, Burnaby, BC, V5A1S6, Canada

Keywords:
Climate Change
Rainfall
Food
Agriculture
Subsistence-oriented communities
Global analysis.

Presentation Type: Oral Presentation
Number:
Abstract ID:35
Candidate for Awards:None