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            "abstractNote": "With regards to the impacts of climate change on water resources, snowmelt dominated basins have been recognized as one of the most vulnerable regions throughout the world. The main reasons are that these basins are prone to be affected by both temperature and precipitation changes. The Metropolitan Region in Chile is located in one of these basins, the Maipo basin. This Region holds more than 40% of the population of the country and a comparable number in terms of contribution to the country's Gross Domestic Product (GDP). Projections of future climate conditions present a dire future for this basin. Precipitation levels are projected to decrease by around 20% by mid 21st century and temperature levels in the mountains are expected to increase by around 3–4 °C (DGF-CONAMA, 2007). These changes affect the Maipo river discharges, decreasing its magnitudes and even affecting its seasonality. These new hydroclimatologic conditions would affect the supply of water for both the residential and industrial sectors in the Region. Because this sector has the highest priority and water must be secured, utility companies use a very high exceedance probability (98%) for its operation. This paper shows how climate change impacts on the hydrological regime of the Maipo river have a direct economic impact on the cost of operation of the utility companies and thus has a negative effect on the consumer surplus of both residential and industrial water users. The economic impacts assessment is carried out by first establishing the change in hydrologic conditions in the natural water supplies in the basin and then relating these changes with changes in economic conditions by two of the main sectors using the water in the basin modeling their current and future probability density functions. We used a water market transaction methodology to determine these economic impacts.",
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            "abstractNote": "Abstract The Limarí River basin is one of the most important watersheds in north-central Chile (30°S). Its headwaters lie at the top of the subtropical Andes ( above sea level) and the river flows westward into the Pacific Ocean over a length of approximately 200 km. This basin has a marked snowmelt-driven hydrological regime and, in spite of the arid conditions that characterize this region, holds more than 50,000 ha of highly productive agricultural land thanks to its irrigation infrastructure and three interconnected reservoirs. Like many semiarid regions around the world, north-central Chile is expected to become warmer and drier during the 21st century as a consequence of ongoing anthropogenic climate change. The associated reduction in streamflow, changes in hydrograph timing, and enhanced evapotranspiration will undoubtedly threaten agriculture in the Limarí basin and elsewhere in semiarid Chile. In this paper, the effect of temperature and precipitation on surface hydrology, performance of water infrastructure, and irrigation coverage in the Limarí basin is investigated by using the water evaluation and planning (WEAP) model. WEAP was calibrated by using current climate and agriculture patterns, and then forced with a set of 30-year-long climate scenarios, each of them obtained by adding a temperature and precipitation perturbation to the historical time series. This delta approach allows (1) determination of the sensitivity of selected variables to climate change, and (2) obtaining a projection of the effects in irrigation coverage expected for the near and far future (2010–2040 and 2070–2100, respectively). Both aspects are investigated for agricultural districts with varying access to irrigation infrastructure and groundwater; this exercise highlights the relevance of added storage and innovative conjunctive use of surface and groundwater resources for improving the resilience and adaptability of irrigated agriculture in the face of a changing climate.",
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            "title": "Monitoring Snow-Cover Depletion by Coupling Satellite Imagery with a Distributed Snowmelt Model",
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            "title": "Climatic sensitivity of streamflow timing in the extratropical western Andes Cordillera",
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                    "creatorType": "author",
                    "firstName": "Gonzalo",
                    "lastName": "Cortés"
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                    "firstName": "Ximena",
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                    "firstName": "James",
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            "abstractNote": "Summary\nThis paper presents an analysis on the hydrological regimes from several rivers flowing from the western slope of the Andes Cordillera. We compiled a database of 40 unimpaired average monthly streamflow records located in central and southern Chile, spanning the region between latitudes 30°S and 40°S and the period between years 1961 and 2006. River categories encompass snowmelt, mixed and rainfall dominated watersheds. The water year hydrograph center of timing (CT) is used as an indicator of flow regime and as a proxy for streamflow distribution throughout the year. The CT for each river is correlated to local climatic variables such as seasonal temperature and precipitation, and to large-scale circulation indexes. We assess CT trends using the Mann–Kendall test for varying time windows within the study period. Overall results for the 1961–2006 period show a significant (95% confidence level) negative trend (CT date shifting towards earlier in the year) for 23 out of the 40 analyzed series. However, when studying time windows within the entire period there seems to be a break in the trend during the late 1970s, with positive or null changes for the latter half of the study period for most of the stations analyzed. We found that even though the CT is significantly correlated (r &gt; 0.5) to temperature indexes in the snowfed watersheds, there has been no significant change in CT timing for most of these watersheds despite documented warming on the region. CT for all types of watersheds present clear correlation to precipitation indexes (r &gt; 0.8), and we observed high and significant correlation between CT and ONI, SOI and MEI indexes for all the study region: higher (lower) precipitation amounts during El Niño (La Niña), rather than temperature variations, seem to be the most important factor controlling CT timing during these episodes. In order of importance, the CT showed higher correlation with annual precipitation amounts and timing, MEI, ONI and SOI, mean winter and spring temperature, and finally PDO. The detected trends are consistent only with trends in precipitation, as rivers that showed high correlation to temperature do not show any trend. These conclusions suggest that rivers on the region show a different response to temperature changes when compared to rivers of similar regime in the northern hemisphere, and that precipitation amount and timing are the source of most of the variability in streamflow timing for both snowmelt and rainfall dominated watersheds. Temperature induced variability in streamflow timing should be studied with more precise hydrological models, as the CT has a complex behavior due to multiple climatical dependencies. Studying such behavior using only historical data might be insufficient for drawing more precise conclusions.",
            "publicationTitle": "Journal of Hydrology",
            "publisher": "",
            "place": "",
            "date": "July 21, 2011",
            "volume": "405",
            "issue": "1–2",
            "section": "",
            "partNumber": "",
            "partTitle": "",
            "pages": "93-109",
            "series": "",
            "seriesTitle": "",
            "seriesText": "",
            "journalAbbreviation": "Journal of Hydrology",
            "DOI": "10.1016/j.jhydrol.2011.05.013",
            "citationKey": "",
            "url": "http://www.sciencedirect.com/science/article/pii/S0022169411003234",
            "accessDate": "2013-11-27T04:15:33Z",
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            "PMCID": "",
            "ISSN": "0022-1694",
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            "language": "",
            "libraryCatalog": "ScienceDirect",
            "callNumber": "",
            "rights": "",
            "extra": "",
            "tags": [
                {
                    "tag": "Andes Cordillera",
                    "type": 1
                },
                {
                    "tag": "Climate change",
                    "type": 1
                },
                {
                    "tag": "Hydroclimatology",
                    "type": 1
                },
                {
                    "tag": "Streamflow timing",
                    "type": 1
                },
                {
                    "tag": "Time series analysis",
                    "type": 1
                }
            ],
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            "dateModified": "2013-12-09T03:45:16Z"
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    },
    {
        "key": "53TCN3QQ",
        "version": 6,
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            "creatorSummary": "Vicuña et al.",
            "parsedDate": "2011-04-01",
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        "data": {
            "key": "53TCN3QQ",
            "version": 6,
            "itemType": "journalArticle",
            "title": "Climate change impacts on the hydrology of a snowmelt driven basin in semiarid Chile",
            "creators": [
                {
                    "creatorType": "author",
                    "firstName": "Sebastian",
                    "lastName": "Vicuña"
                },
                {
                    "creatorType": "author",
                    "firstName": "René D.",
                    "lastName": "Garreaud"
                },
                {
                    "creatorType": "author",
                    "firstName": "James",
                    "lastName": "McPhee"
                }
            ],
            "abstractNote": "In this paper we present an analysis of the direct impacts of climate change on the hydrology of the upper watersheds (range in elevation from 1,000 to 5,500 m above sea level) of the snowmelt-driven Limarí river basin, located in north-central Chile (30° S, 70° W). A climate-driven hydrology and water resources model was calibrated using meteorological and streamflow observations and later forced by a baseline and two climate change projections (A2, B2) that show an increase in temperature of about 3–4°C and a reduction in precipitation of 10–30% with respect to baseline. The results show that annual mean streamflow decreases more than the projected rainfall decrease because a warmer climate also enhances water losses to evapotranspiration. Also in future climate, the seasonal maximum streamflow tends to occur earlier than in current conditions, because of the increase in temperature during spring/summer and the lower snow accumulation in winter.",
            "publicationTitle": "Climatic Change",
            "publisher": "",
            "place": "",
            "date": "2011/04/01",
            "volume": "105",
            "issue": "3-4",
            "section": "",
            "partNumber": "",
            "partTitle": "",
            "pages": "469-488",
            "series": "",
            "seriesTitle": "",
            "seriesText": "",
            "journalAbbreviation": "Climatic Change",
            "DOI": "10.1007/s10584-010-9888-4",
            "citationKey": "",
            "url": "http://link.springer.com/article/10.1007/s10584-010-9888-4",
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            "ISSN": "0165-0009, 1573-1480",
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            "language": "en",
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