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Oscar Molina
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Journal article
Published: 23 December 2019 in Water
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There is a lack of information about the effect of climate change on the water budget for the eastern side of Colombia, which is currently experiencing an increased pressure on its water resources due to the demand for food, industrial use, and human demand for drinking and hygiene. In this study, the lumped model BROOK90 was utilized with input based on the available historical and projected meteorological data, as well as land use and soil information. With this data, we were able to determine the changes in the water balance components in four different regions, representing four different water districts in Eastern Colombia. These four regions reflect four different sets of climate and geographic conditions. The projected data were obtained using the Statistical Downscaling Model (SDSM), in which two global climate models were used in addition to two different climate scenarios from each. These are the Representative Concentration Pathways (RCP) RCP 2.6 and RCP 8.5. Results showed that the temporal and spatial distribution of water balance components were considerably affected by the changing climate. A reduction in the generated streamflow for all of the studied regions is shown and changes in the evapotranspiration and stored water were varied for each region according to both the climate scenario as well as the characteristics of soil and land use for each area. The results of spatial change of the water balance components showed a direct link to the geography of each region. Soil moisture was reduced considerably in the next decades, and the percentage of decrease varied for each scenario.

ACS Style

Oscar Molina; Thi Thanh Luong; Christian Bernhofer. Projected Changes in the Water Budget for Eastern Colombia Due to Climate Change. Water 2019, 12, 65 .

AMA Style

Oscar Molina, Thi Thanh Luong, Christian Bernhofer. Projected Changes in the Water Budget for Eastern Colombia Due to Climate Change. Water. 2019; 12 (1):65.

Chicago/Turabian Style

Oscar Molina; Thi Thanh Luong; Christian Bernhofer. 2019. "Projected Changes in the Water Budget for Eastern Colombia Due to Climate Change." Water 12, no. 1: 65.

Journal article
Published: 20 December 2019 in Water
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Regions located on the eastern side of Colombia are vulnerable to climate change due to the high diversity of fauna and flora located there, the potentially direct impact on agricultural activities, as well as the pressure on water resources. Limited research and work have been conducted to accurately create a description of the climate of these specific regions. The characteristics of the available records, which is valuable information, together with complementary data can be used to simulate the impacts of climate change and the effects it has on the water cycle. A description of the climate for the eastern region of Colombia was made and historical daily records from 669 hydrometeorological stations were considered in order to analyze the robustness and spatial distribution of the data. According to the available data, four of the water districts that compose the eastern region of the country were selected to show both a representative analysis of the climate variability and a consistency analysis using a cross-correlation procedure. A high percentage of missing values was found in the available records; however, with regards to the climatological analysis for the period from 1980 to 2015, 40% of missing values or less seems to be a good threshold for the datasets to be used. Temperature records show monthly small variations and a decreasing average rate from lower to higher elevations, i.e., 5 °C every 1000 m. Precipitation shows different patterns according to the region with monomodal and bimodal patterns. Correlations between datasets of the same region are positive and a significant correlation is obtained with temperature for stations at similar elevations or those located close to each other, and low correlations of precipitation are found. These data records are considered a good source of input data which could be used to perform further analysis such as a climate downscaling procedure, as well as a potential water budget approach for the four studied regions.

ACS Style

Oscar Molina; Christian Bernhofer. Assessment of Regional and Historical Climate Records for a Water Budget Approach in Eastern Colombia. Water 2019, 12, 42 .

AMA Style

Oscar Molina, Christian Bernhofer. Assessment of Regional and Historical Climate Records for a Water Budget Approach in Eastern Colombia. Water. 2019; 12 (1):42.

Chicago/Turabian Style

Oscar Molina; Christian Bernhofer. 2019. "Assessment of Regional and Historical Climate Records for a Water Budget Approach in Eastern Colombia." Water 12, no. 1: 42.