Life time of soil moisture perturbations in a coupled land-atmosphere simulation

Stacke, Tobias; Hagemann, Stefan

doi:10.5194/esd-7-1-2016

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Life time of soil moisture perturbations in a coupled land-atmosphere simulation

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Stacke, Tobias
Terrestrial Hydrology, The Land in the Earth System, MPI for Meteorology, Max Planck Society;

/persons/resource/persons37170

Hagemann, Stefan
Terrestrial Hydrology, The Land in the Earth System, MPI for Meteorology, Max Planck Society;

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http://cera-www.dkrz.de/WDCC/ui/Compact.jsp?acronym=DKRZ_lta_756
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esd-7-1-2016.pdf
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2016_stacke_esd.zip
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引用

Stacke, T., & Hagemann, S. (2016). Life time of soil moisture perturbations in a coupled land-atmosphere simulation. Earth System Dynamics, 7, 1-19. doi:10.5194/esd-7-1-2016.

引用: https://hdl.handle.net/11858/00-001M-0000-002A-E4A5-7

要旨

This study evaluates the lifetime of soil moisture perturbations using an atmosphere-land GCM. We find memory of up to 9 months for root zone soil moisture. Interactions with other surface states result in significant but short-lived anomalies in surface temperature and more stable anomalies in leaf carbon content. As these anomalies can recur repeatedly, e.g. due to interactions with a deep-soil moisture reservoir, we conclude that soil moisture initialization may impact climate predictions.