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dc.contributor.author
Mitchell, Daniel
dc.contributor.author
AchutaRao, Krishna
dc.contributor.author
Allen, Myles
dc.contributor.author
Bethke, Ingo
dc.contributor.author
Beyerle, Urs
dc.contributor.author
Ciavarella, Andrew
dc.contributor.author
Forster, Piers M.
dc.contributor.author
Fuglestvedt, Jan
dc.contributor.author
Gillett, Nathan
dc.contributor.author
Haustein, Karsten
dc.contributor.author
Ingram, William
dc.contributor.author
Iversen, Trond
dc.contributor.author
Kharin, Viatcheslav
dc.contributor.author
Klingaman, Nicholas
dc.contributor.author
Massey, Neil
dc.contributor.author
Fischer, Erich M.
dc.contributor.author
Schleussner, Carl-Friedrich
dc.contributor.author
Scinocca, John
dc.contributor.author
Seland, Øyvind
dc.contributor.author
Shiogama, Hideo
dc.contributor.author
Shuckburgh, Emily
dc.contributor.author
Sparrow, Sarah
dc.contributor.author
Stone, Dáithi
dc.contributor.author
Uhe, Peter
dc.contributor.author
Wallom, David
dc.contributor.author
Wehner, Michael
dc.contributor.author
Zaaboul, Rashyd
dc.date.accessioned
2017-10-30T16:40:56Z
dc.date.available
2017-06-12T20:02:44Z
dc.date.available
2017-10-30T16:40:56Z
dc.date.issued
2017-02-08
dc.identifier.issn
1991-9603
dc.identifier.issn
1991-959X
dc.identifier.other
10.5194/gmd-10-571-2017
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/128890
dc.identifier.doi
10.3929/ethz-b-000128890
dc.description.abstract
The Intergovernmental Panel on Climate Change (IPCC) has accepted the invitation from the UNFCCC to provide a special report on the impacts of global warming of 1.5 °C above pre-industrial levels and on related global greenhouse-gas emission pathways. Many current experiments in, for example, the Coupled Model Inter-comparison Project (CMIP), are not specifically designed for informing this report. Here, we document the design of the half a degree additional warming, projections, prognosis and impacts (HAPPI) experiment. HAPPI provides a framework for the generation of climate data describing how the climate, and in particular extreme weather, might differ from the present day in worlds that are 1.5 and 2.0 °C warmer than pre-industrial conditions. Output from participating climate models includes variables frequently used by a range of impact models. The key challenge is to separate the impact of an additional approximately half degree of warming from uncertainty in climate model responses and internal climate variability that dominate CMIP-style experiments under low-emission scenarios. Large ensembles of simulations (>  50 members) of atmosphere-only models for three time slices are proposed, each a decade in length: the first being the most recent observed 10-year period (2006–2015), the second two being estimates of a similar decade but under 1.5 and 2 °C conditions a century in the future. We use the representative concentration pathway 2.6 (RCP2.6) to provide the model boundary conditions for the 1.5 °C scenario, and a weighted combination of RCP2.6 and RCP4.5 for the 2 °C scenario.
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Half a degree additional warming, prognosis and projected impacts (HAPPI): Background and experimental design
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
Geoscientific Model Development
ethz.journal.volume
10
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
Geosci. model dev.
ethz.pages.start
571
en_US
ethz.pages.end
583
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
010180250
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science::03777 - Knutti, Reto / Knutti, Reto
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02717 - Institut für Atmosphäre und Klima / Inst. Atmospheric and Climate Science::03777 - Knutti, Reto / Knutti, Reto
ethz.date.deposited
2017-06-12T20:03:34Z
ethz.source
ECIT
ethz.identifier.importid
imp5936554a7669737043
ethz.ecitpid
pub:191819
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-13T19:37:06Z
ethz.rosetta.lastUpdated
2018-11-05T23:53:01Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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