Extreme hurricane rainfall affecting the Caribbean mitigated by the Paris Agreement goals
Name
L_Vosper_2020_Environ._Res._Lett._15_104053.pdf
Description
Published version
Size
1.7 MB
Format
Unknown
Checksum (MD5)
7a0682a82aace32c48629f6784df0c00
Author(s)
Vosper, E. L.
Mitchell, D. M.
Emanuel, Kerry Andrew
Date Issued
2020
Journal
Environmental Research Letters
Publisher
IOP Publishing
Version
Final published version
Abstract
© 2020 The Author(s). Hurricanes are among the most impactful extreme weather events affecting small island states such as the Caribbean and require long-term planning for community and infrastructure resilience. By coupling an offline dynamical hurricane model to the output of a large ensemble of global climate model simulations from the Half a degree of Additional warming Prognosis and Projected Impacts (HAPPI) project, we assess how the impacts of hurricanes may change under the Paris Climate goals. Specifically, we concentrate on hurricane rainfall over particular regions, with both the mobility and intensity of a hurricane being key drivers of local level impacts. For example, Hurricane Dorian (2019) caused widespread devastation when it stalled over Bahamas as a category 5 storm. We show that since 1970 only one other hurricane stalled at this strength: Hurricane Mitch (1998). Due to a combination of increased stalling and precipitation yield under a warmer world, our analysis indicates a greater likelihood of extreme hurricane rainfall occurring in the Caribbean under both Paris Agreement scenarios of 1.5 ◦C and 2 ◦C Global Warming goals, compared to present climate projections. Focusing on specific hurricane events, we show that a rainfall event equal in magnitude to Hurricane Maria is around half as likely to occur under the 1.5 ◦C Paris Agreement goal compared to a 2 ◦C warmer climate. Our results highlight the need for more research into hurricanes in the Caribbean, an area which has traditionally received far less attention than mainland USA and requires more comprehensive infrastructure planning.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1748-9326/AB9794
