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Northern Hemisphere Monsoon Response to Mid‐Holocene Orbital Forcing and Greenhouse Gas‐Induced Global Warming
Author(s) -
D'Agostino Roberta,
Bader Jürgen,
Bordoni Simona,
Ferreira David,
Jungclaus Johann
Publication year - 2019
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2018gl081589
Subject(s) - climatology , holocene , northern hemisphere , monsoon , orbital forcing , environmental science , climate model , global warming , precipitation , greenhouse gas , climate change , coupled model intercomparison project , forcing (mathematics) , atmospheric sciences , geology , oceanography , geography , meteorology , insolation
Precipitation and circulation patterns of Northern Hemisphere monsoons are investigated in Coupled Model Intercomparison Project phase 5 simulations for mid‐Holocene and future climate scenario rcp8.5. Although both climates exhibit Northern Hemisphere warming and enhanced interhemispheric thermal contrast in boreal summer, changes in the spatial extent and rainfall intensity in future climate are smaller than in mid‐Holocene for all Northern Hemisphere monsoons except the Indian monsoon. A decomposition of the moisture budget in thermodynamic and dynamic contributions suggests that under future global warming, the weaker response of the African, Indian, and North American monsoons results from a compensation between both components. The dynamic component, primarily constrained by changes in net energy input over land, determines instead most of the mid‐Holocene land monsoonal rainfall response.