Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate

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Westerlies are the main climatic feature in the mid-latitudes of the Southern Hemisphere (SH), driving the amount and distribution of precipitation. Patagonia is a vast region in South America’s mid-latitudes, which encompasses 2 sub regions with highly distinct precipitation features. These two reg...

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Autores principales:	Agosta Scarel, Eduardo Andrés, Compagnucci, Rosa Hilda, Ariztegui, Daniel
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2015
Materias:	Geofísica Synoptic climatology Westerlies Patagonia Blocking flow Southern hemisphere Lakes
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/100840 https://ri.conicet.gov.ar/11336/38660 https://archive-ouverte.unige.ch/unige:46680 https://www.int-res.com/abstracts/cr/v62/n3/p219-240/
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-100840
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Geofísica Synoptic climatology Westerlies Patagonia Blocking flow Southern hemisphere Lakes
spellingShingle	Geofísica Synoptic climatology Westerlies Patagonia Blocking flow Southern hemisphere Lakes Agosta Scarel, Eduardo Andrés Compagnucci, Rosa Hilda Ariztegui, Daniel Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate
topic_facet	Geofísica Synoptic climatology Westerlies Patagonia Blocking flow Southern hemisphere Lakes
description	Westerlies are the main climatic feature in the mid-latitudes of the Southern Hemisphere (SH), driving the amount and distribution of precipitation. Patagonia is a vast region in South America’s mid-latitudes, which encompasses 2 sub regions with highly distinct precipitation features. These two regions include wet Western Patagonia extending from the Pacific coast to the Andean highs (i.e. maximum elevations), and dry Eastern Patagonia situated leeward of the Andes in the Argentine steppe plains. Patagonia is influenced by strong mid-latitude westerlies throughout the year. Westerlies have been considered the unique driver of climate both in Western and Eastern Pata gonia. This research is focused on the Lago Cardiel catchment area in central Eastern Patagonia. A significant link between precipitation in that region and local zonal moisture transport from the Atlantic was established. A fraction of intense precipitation was related to strong local westward moisture transport, partly as a consequence of slow-moving weather systems crossing over Patagonia. As long as a dipolar pattern of long-term precipitation anomaly was observed between dry central Western/Southern Patagonia and wet central Eastern Patagonia, it could be interpreted as due to enhanced synoptic easterly moisture flux from the Atlantic. Thus, the westerlies rule was broken at least under blocking-like flows, which induced moist easterlies. The relatively wet 1940s exemplified this phenomenon. Such a conceptual framework can be applied to palaeoclimatic proxy record reconstructions as well as to general circulation model (GCM) outcomes for the late and mid-Holocene.
format	Articulo Articulo
author	Agosta Scarel, Eduardo Andrés Compagnucci, Rosa Hilda Ariztegui, Daniel
author_facet	Agosta Scarel, Eduardo Andrés Compagnucci, Rosa Hilda Ariztegui, Daniel
author_sort	Agosta Scarel, Eduardo Andrés
title	Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate
title_short	Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate
title_full	Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate
title_fullStr	Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate
title_full_unstemmed	Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate
title_sort	precipitation linked to atlantic moisture transport: clues to interpret patagonian palaeoclimate
publishDate	2015
url	http://sedici.unlp.edu.ar/handle/10915/100840 https://ri.conicet.gov.ar/11336/38660 https://archive-ouverte.unige.ch/unige:46680 https://www.int-res.com/abstracts/cr/v62/n3/p219-240/
work_keys_str_mv	AT agostascareleduardoandres precipitationlinkedtoatlanticmoisturetransportcluestointerpretpatagonianpalaeoclimate AT compagnuccirosahilda precipitationlinkedtoatlanticmoisturetransportcluestointerpretpatagonianpalaeoclimate AT arizteguidaniel precipitationlinkedtoatlanticmoisturetransportcluestointerpretpatagonianpalaeoclimate
bdutipo_str	Repositorios
_version_	1764820440125014020

Precipitation linked to Atlantic moisture transport: clues to interpret Patagonian palaeoclimate

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