Faglige interesser
- Klimamodellering
- Økonomiske konsekvenser av klimaendringer
Bakgrunn
- 2018 - nå: PhD-stipendiat, Universitetet i Oslo
- 2016 - 2018: Master i meteorologi, Inst. for geofag, Universitetet i Oslo
Emneord:
Klimamodellering,
Økonomiske konsekvenser,
NorESM
Publikasjoner
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Bjordal, Jenny; Storelvmo, Trude & Smith Jr., Anthony A
(2022).
Quantifying uncertainty about global and regional economic impacts of climate change.
Environmental Research Letters.
ISSN 1748-9326.
17(9).
doi:
10.1088/1748-9326/ac8ab1.
Fulltekst i vitenarkiv
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Bjordal, Jenny; Storelvmo, Trude; Alterskjær, Kari & Carlsen, Tim
(2020).
Equilibrium climate sensitivity above 5 °C plausible due to state-dependent cloud feedback.
Nature Geoscience.
ISSN 1752-0894.
13,
s. 718–721.
doi:
10.1038/s41561-020-00649-1.
Fulltekst i vitenarkiv
Vis sammendrag
The equilibrium climate sensitivity of Earth is defined as the global mean surface air temperature increase that follows a doubling of atmospheric carbon dioxide. For decades, global climate models have predicted it as between approximately 2 and 4.5 °C. However, a large subset of models participating in the 6th Coupled Model Intercomparison Project predict values exceeding 5 °C. The difference has been attributed to the radiative effects of clouds, which are better captured in these models, but the underlying physical mechanism and thus how realistic such high climate sensitivities are remain unclear. Here we analyse Community Earth System Model simulations and find that, as the climate warms, the progressive reduction of ice content in clouds relative to liquid leads to increased reflectivity and a negative feedback that restrains climate warming, in particular over the Southern Ocean. However, once the clouds are predominantly liquid, this negative feedback vanishes. Thereafter, other positive cloud feedback mechanisms dominate, leading to a transition to a high-sensitivity climate state. Although the exact timing and magnitude of the transition may be model dependent, our findings suggest that the state dependence of the cloud-phase feedbacks is a crucial factor in the evolution of Earth’s climate sensitivity with warming.
Se alle arbeider i Cristin
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Bjordal, Jenny; Storelvmo, Trude & Smith, Jr, Anthony A.
(2022).
The climate casino: Winners and losers in a warmer world.
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Bjordal, Jenny; Storelvmo, Trude & Smith, Jr, Anthony A.
(2022).
The climate casino: Winners and losers in a warmer world.
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Bjordal, Jenny; Storelvmo, Trude & Smith, Jr, Anthony A.
(2021).
Economic winners and losers in a warmer world -
Uncertainties in regional economic impacts of climate change.
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Bjordal, Jenny; Storelvmo, Trude & Smith, Jr, Anthony A.
(2019).
Climate change modelling and prediction of economic impact.
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Bjordal, Jenny; Storelvmo, Trude & Smith, Jr, Anthony A.
(2019).
Climate change modelling and prediction of economic impact.
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Bjordal, Jenny
(2017).
Sample Seismic from PCube Prior Model -
Report after summer internship.
Norsk Regnesentral.
Se alle arbeider i Cristin
Publisert
19. nov. 2018 14:46
- Sist endret
12. aug. 2020 10:51