{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T06:09:09Z","timestamp":1772258949688,"version":"3.50.1"},"posted":{"date-parts":[[2019,2,15]]},"group-title":"Atmospheric Dynamics\/Terrestrial Archives\/Centennial-Decadal","reference-count":0,"publisher":"Copernicus GmbH","license":[{"start":{"date-parts":[[2019,2,15]],"date-time":"2019-02-15T00:00:00Z","timestamp":1550188800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Abstract. Modern precipitation anomalies in the Altiplano region of South America are closely linked to the strength of the South American Summer Monsoon (SASM) which is influenced by large-scales climate components sourced in the tropics such as latitudinal shifts of the Intertropical Convergence Zone (ITCZ) and El Ni\u00f1o-Southern Oscillation (ENSO). However, the timing, direction and spatial extent of precipitation changes prior to the instrumental period are still largely unknown, preventing a better understanding of the long-term drivers of the SASM and their effects over the Altiplano. Here we present a detailed pollen reconstruction from a sedimentary sequence covering the period between 4500\u20131000\u2009cal\u2009yr\u2009BP in Lago Chungar\u00e1 (18\u00b0\u2009S; 4570\u2009masl), a high elevation lake in the southwestern margin of the Altiplano where precipitation is delivered almost exclusively during the mature phase of the SASM in the austral summer. We distinguish three well-defined centennial-scale anomalies, with dry conditions between 4100\u20133300 and 1600\u20131000\u2009cal\u2009yr\u2009BP, and a conspicuous humid interval between 2400\u20131600\u2009cal\u2009yr\u2009BP; which resulted from weakening and strengthening of the SASM respectively. Comparisons with other climate reconstructions from the Altiplano, the Atacama Desert, the Tropical Andes and the southwestern Atlantic coast reveal that \u2013 unlike the modern climatological controls \u2013 past precipitation anomalies at Lago Chungar\u00e1 were largely decoupled from north-south shifts in the ITCZ and ENSO. A regionally coherent pattern of centennial-scale SASM variations and a significant latitudinal gradient in precipitation responses suggest the contribution of an extra-tropical moisture source for the SASM, with significant effects over precipitation variability in the Southern Altiplano.<\/jats:p>","DOI":"10.5194\/cp-2019-13","type":"posted-content","created":{"date-parts":[[2019,2,15]],"date-time":"2019-02-15T02:13:37Z","timestamp":1550196817000},"source":"Crossref","is-referenced-by-count":0,"title":["Centennial-scale precipitation anomalies in the southern Altiplano\n(18\u00b0\u2009S) suggest an extra-tropical driver for the South American\nSummer Monsoon during the late Holocene"],"prefix":"10.5194","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-6682-8092","authenticated-orcid":false,"given":"Ignacio A.","family":"Jara","sequence":"first","affiliation":[]},{"given":"Antonio","family":"Maldonado","sequence":"additional","affiliation":[]},{"given":"Leticia","family":"Gonz\u00e1lez","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7245-9863","authenticated-orcid":false,"given":"Armand","family":"Hern\u00e1ndez","sequence":"additional","affiliation":[]},{"given":"Alberto","family":"S\u00e1ez","sequence":"additional","affiliation":[]},{"given":"Santiago","family":"Giralt","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2928-2836","authenticated-orcid":false,"given":"Roberto","family":"Bao","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2214-7057","authenticated-orcid":false,"given":"Blas","family":"Valero-Garc\u00e9s","sequence":"additional","affiliation":[]}],"member":"3145","container-title":[],"original-title":[],"link":[{"URL":"https:\/\/www.clim-past-discuss.net\/cp-2019-13\/cp-2019-13.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,2,1]],"date-time":"2025-02-01T01:26:07Z","timestamp":1738373167000},"score":1,"resource":{"primary":{"URL":"https:\/\/cp.copernicus.org\/articles\/15\/1845\/2019\/cp-15-1845-2019-discussion.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,2,15]]},"references-count":0,"URL":"https:\/\/doi.org\/10.5194\/cp-2019-13","relation":{"has-comment":[{"id-type":"doi","id":"10.5194\/cp-2019-13-AC1","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/cp-2019-13-AC2","asserted-by":"subject"}],"has-review":[{"id-type":"doi","id":"10.5194\/cp-2019-13-RC1","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/cp-2019-13-RC2","asserted-by":"subject"}],"is-preprint-of":[{"id-type":"doi","id":"10.5194\/cp-15-1845-2019","asserted-by":"subject"},{"id-type":"doi","id":"10.5194\/cp-15-1845-2019","asserted-by":"object"}]},"subject":[],"published":{"date-parts":[[2019,2,15]]},"subtype":"preprint"}}