caa a22 4500 605473625 CHVBK 20210128100343.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00382-014-2221-6 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2221-6 Impact of the soil hydrology scheme on simulated soil moisture memory [Elektronische Daten] [Stefan Hagemann, Tobias Stacke] Soil moisture-atmosphere feedback effects play an important role in several regions of the globe. For some of these regions, soil moisture memory may contribute significantly to the state and temporal variation of the regional climate. Identifying those regions can help to improve predictability in seasonal to decadal climate forecasts. In order to accurately simulate soil moisture memory and associated soil moisture-atmosphere interactions, an adequate representation of soil hydrology is required. The present study investigates how different setups of a soil hydrology scheme affect soil moisture memory simulated by the global climate model of the Max Planck Institute for Meteorology, ECHAM6/JSBACH. First, the standard setup is applied in which soil water is represented by a single soil moisture reservoir corresponding to the root zone. Second, a new five layer soil hydrology scheme is introduced where not only the root zone is differentiated into several layers but also layers below are added. Here, three variants of the new scheme are utilized to analyse how different characteristics of the soil hydrology and the associated fluxes influence soil moisture memory. Soil moisture memory of the different setups is analysed from global ECHAM6/JSBACH simulations forced by observed SST. Areas are highlighted where the regional climate seems to be sensitive to the improved representation of soil hydrology in the new setup and its variants. Results indicate that soil moisture memory is generally enlarged in regions during the dry season where a soil moisture buffer is present below the root zone due to the 5-layer scheme. This effect is usually enhanced when this buffer is increased. Memory tends to be weakened (strengthened) where bare soil evaporation is increased (decreased), especially in semi-arid regions and wet seasons. For some areas, this effect is compensated by a decreased (increased) transpiration. Springer-Verlag Berlin Heidelberg, 2014 Soil moisture nationallicence Large-scale hydrology nationallicence Climate modelling nationallicence Soil moisture memory nationallicence Land surface processes nationallicence Hagemann Stefan Max Planck Institute for Meteorology, Bundesstr. 53, 20146, Hamburg, Germany aut Stacke Tobias Max Planck Institute for Meteorology, Bundesstr. 53, 20146, Hamburg, Germany aut Climate Dynamics Springer Berlin Heidelberg 44/7-8(2015-04-01), 1731-1750 0930-7575 44:7-8<1731 2015 44 382 https://doi.org/10.1007/s00382-014-2221-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-014-2221-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hagemann Stefan Max Planck Institute for Meteorology, Bundesstr. 53, 20146, Hamburg, Germany aut NATIONALLICENCE 700 1- Stacke Tobias Max Planck Institute for Meteorology, Bundesstr. 53, 20146, Hamburg, Germany aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 44/7-8(2015-04-01), 1731-1750 0930-7575 44:7-8<1731 2015 44 382