INVESTIGADORES
GARIBOTTI irene Adriana
congresos y reuniones científicas
Título:
Present and past climatic variability across the Argentinean Andes: Current studies in the context of CRNII-47 (Changes in the Hydrological Cycle in the America Cordillera)
Autor/es:
VILLALBA, R.; MASIOKAS, M.H.; LASCANO, M.; BONINSEGNA, J.A.; GARIBOTTI, I.A.; FLAMENCO, E.; DELGADO, S.; MORALES, M.; GIL MONTERO, R.; FERRERO, E.; SRUR, A.M.; CASTELLER, A.; PAOLINI, L.
Lugar:
Mendoza, Argentina
Reunión:
Simposio; Simposio sobre Cambio Climático: Organizando la Ciencia para la Cordillera Americana; 2006
Resumen:
In many areas of Western Argentina, mountain regions provide water that sustains adjacent arid lowland communities. Future changes in the amount, seasonality and quality of that water will be critical determinants of human activities in these areas. The recognition of key scientific gaps in our understanding of climate variability across the Southern Andes is essential for reaching a comprehensive view of the regional water cycle dynamics and providing critical data about present and future water resources. This presentation summarizes the current research conducted at Department of Dendrochronology and Environmental History of IANIGLA intended to reach a long-term view of the dynamics of the water cycle across the Argentinean Andes. These activities include:             -Characterization of the long-term trends in instrumental records including precipitation in the Central and Patagonian Andes and regional river discharges.             -Identification of regional and hemispheric forcings of hydroclimatic variability across the Andes during the 20th century.             -Assessment of changes in streamflow seasonality in response to climate variability.             -Consolidation and expansion of tree-ring chronologies at high altitude in the Puna, Prepuna and Yungas of Northwestern Argentina: e.g. Polylepis tarapacana, Prosopis ferox and Juglans australis to increase the network coverage of these chronologies in subtropical South America.             -Exploratory survey of tree species useful for dendrochronology in the xeric, low elevation subtropical Chaco formation.             -Dendroglaciological and lichenometric studies to document past glacial variations across Patagonia.             -New collections and updating of old tree-ring chronologies sensitive to precipitation and temperature variations in Patagonia.             -Reconstruction of snow avalanche history in Southern Patagonia based on tree-ring records.             -Assessment of the impact of climate variations on forest dynamics and socio-economic activities across the Argentinean Andes.