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Dallmeyer, Anne; Claussen, Martin; Fischer, Nils; Haberkorn, Kerstin; Wagner, Sebastian; Pfeiffer, Madlene; Jin, Liya; Khon, Vyacheslav; Wang, Yongbo; Herzschuh, Ulrike (2014): Holocene precipitation change in different monsoon sub-regions (time-slices and transient data) simulated by different global climate models, with links to model results. PANGAEA, https://doi.org/10.1594/PANGAEA.837442, Supplement to: Dallmeyer, Anne; Claussen, Martin; Fischer, Nils; Haberkorn, Kerstin; Wagner, Sebastian; Pfeiffer, Madlene; Jin, Liya; Khon, Vyacheslav; Wang, Y; Herzschuh, Ulrike (2015): The evolution of sub-monsoon systems in the Afro-Asian monsoon region during the Holocene– comparison of different transient climate model simulations. Climate of the Past, 11(2), 305-326, https://doi.org/10.5194/cp-11-305-2015

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Abstract:
The recently proposed global monsoon hypothesis interprets monsoon systems as part of one global-scale atmospheric overturning circulation, implying a connection between the regional monsoon systems and an in-phase behaviour of all northern hemispheric monsoons on annual timescales (Trenberth et al., 2000). Whether this concept can be applied to past climates and variability on longer timescales is still under debate, because the monsoon systems exhibit different regional characteristics such as different seasonality (i.e. onset, peak, and withdrawal). To investigate the interconnection of different monsoon systems during the pre-industrial Holocene, five transient global climate model simulations have been analysed with respect to the rainfall trend and variability in different sub-domains of the Afro-Asian monsoon region. Our analysis suggests that on millennial timescales with varying orbital forcing, the monsoons do not behave as a tightly connected global system. According to the models, the Indian and North African monsoons are coupled, showing similar rainfall trend and moderate correlation in rainfall variability in all models. The East Asian monsoon changes independently during the Holocene. The dissimilarities in the seasonality of the monsoon sub-systems lead to a stronger response of the North African and Indian monsoon systems to the Holocene insolation forcing than of the East Asian monsoon and affect the seasonal distribution of Holocene rainfall variations. Within the Indian and North African monsoon domain, precipitation solely changes during the summer months, showing a decreasing Holocene precipitation trend. In the East Asian monsoon region, the precipitation signal is determined by an increasing precipitation trend during spring and a decreasing precipitation change during summer, partly balancing each other. A synthesis of reconstructions and the model results do not reveal an impact of the different seasonality on the timing of the Holocene rainfall optimum in the different sub-monsoon systems. They rather indicate locally inhomogeneous rainfall changes and show, that single palaeo-records should not be used to characterise the rainfall change and monsoon evolution for entire monsoon sub-systems.
Source data set:
Fischer, Nils; Jungclaus, Johann H (2011): Evolution of the seasonal temperature cycle in a transient Holocene simulation: orbital forcing and sea-ice. Climate of the Past, 7, 1139-1148, https://doi.org/10.5194/cp-7-1139-2011
Haberkorn, Kerstin (2013): Reconstruction of the Holocene climate using an atmosphere–ocean-biosphere model and proxy data. PhD Thesis, University of Hamburg, urn:nbn:de:gbv:18-62566
Jin, Liya; Schneider, Birgit; Park, Wonsun; Latif, Mojib; Khon, Vyacheslav; Zhang, P X (2014): The spatial–temporal patterns of Asian summer monsoon precipitation in response to Holocene insolation change: a model-data synthesis. Quaternary Science Reviews, 85, 47-62, https://doi.org/10.1016/j.quascirev.2013.11.004
Pfeiffer, Madlene; Lohmann, Gerrit (2013): The last interglacial as simulated by an Atmosphere-Ocean General Circulation Model: Sensitivity studies on the influence of the Greenland Ice Sheet. In: Lohmann, Gerrit; Grosfeld, Klaus; Wolf-Gladrow, Dieter; Unnithan, Vikram; Notholt, Justus; Wegner, Anna (eds.), Earth System Science: Bridging the Gaps between Disciplines, SpringerBriefs in Earth System Sciences, Springer Berlin Heidelberg, Berlin, Heidelberg, 57-82, https://doi.org/10.1007/978-3-642-32235-8_3
Wagner, Sebastian; Widmann, Martin; Jones, Julie; Haberzettl, Torsten; Lücke, Andreas; Mayr, Christoph; Ohlendorf, Christian; Schäbitz, Frank; Zolitschka, Bernd (2007): Transient simulations, empirical reconstructions and forcing mechanisms for the Mid-holocene hydrological climate in southern Patagonia. Climate Dynamics, 29(4), 333-355, https://doi.org/10.1007/s00382-007-0229-x
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Reference of dataRef dataDallmeyer, Anne
2File contentContentDallmeyer, Anne
3CommentCommentDallmeyer, AnneName and resolution of model
4File nameFile nameDallmeyer, Anne
5File formatFile formatDallmeyer, Anne
6File sizeFile sizekByteDallmeyer, Anne
7Uniform resource locator/link to fileURL fileDallmeyer, Anne
Size:
76 data points

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