Valley-mountain circulation associated with precipitation formation in the tropical Andes (Rio Santa Basin)

Rosales, Alan Jesús García

doi:10.11606/d.14.2019.tde-14052019-124449

Cited by 2 publications

(2 citation statements)

References 61 publications

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“…This period was chosen because of the availability of in situ station data and also corresponds to a year with annual precipitation values close to the mean precipitation of the 1965-2014 period as calculated from 10 long-term stations among the ones used in this study and in [13]. We tested different parametrization schemes using the WRF-6 km domain to identify the most appropriate setup to describe the observed diurnal cycle of precipitation during March 2013 [55]. We chose the WRF-6 km configuration that presents lesser errors (in terms of bias, root mean square error, mean absolute error, and diurnal cycle phase and amplitude) to reproduce precipitation characteristics compared to in situ observations to provide boundary conditions to WRF-2 km simulation.…”

Section: Wrf Simulationsmentioning

confidence: 99%

Valley–Mountain Circulation Associated with the Diurnal Cycle of Precipitation in the Tropical Andes (Santa River Basin, Peru)

et al. 2022

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The Cordillera Blanca (central Andes of Peru) represents the largest concentration of tropical glaciers in the world. The atmospheric processes related to precipitations are still scarcely studied in this region. The main objective of this study is to understand the atmospheric processes of interaction between local and regional scales controlling the diurnal cycle of precipitation over the Santa River basin located between the Cordillera Blanca and the Cordillera Negra. The rainy season (December–March) of 2012–2013 is chosen to perform simulations with the WRF (Weather Research and Forecasting) model, with two domains at 6 km (WRF-6 km) and 2 km (WRF-2 km) horizontal resolutions, forced by ERA5. WRF-2 km precipitation shows a clear improvement over WRF-6 km in terms of the daily mean and diurnal cycle, compared to in situ observations. WRF-2 km shows that the moisture from the Pacific Ocean is a key process modulating the diurnal cycle of precipitation over the Santa River basin in interaction with moisture fluxes from the Amazon basin. In particular, a channeling thermally orographic flow is described as controlling the afternoon precipitation along the Santa valley. In addition, in the highest parts of the Santa River basin (in both cordilleras) and the southern part, maximum precipitation occurs earlier than the lowest parts and the bottom of the valley in the central part of the basin, associated with the intensification of the channeling flow by upslope cross-valley winds during mid-afternoon and its decrease during late afternoon/early night.

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Section: Wrf Simulationsmentioning

confidence: 99%

Valley–Mountain Circulation Associated with the Diurnal Cycle of Precipitation in the Tropical Andes (Santa River Basin, Peru)

et al. 2022

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“…According to Gonzalo [9] and Calvo [10], he mentions that a series can be non-stationary and stationary, the latter being the one that must be constant in the mean and in the variance. [11] All-time series must comply with the process of identification, estimation, validation and prediction, estimation, validation and prediction.…”

Section: Methodsmentioning

confidence: 99%

Determination of the Real Dotation and Forecast of the Potable Water System in the Huancavelica City, Peru

Bizarro¹,

Espinoza²,

Vera³

et al. 2019

JESE-A

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The research entitled, "Determination of the Real Dotation and Forecast of the Potable Water System in the Huancavelica city-Peru", has as objective to determine and analyze the actual endowment and prognosis of the drinking water system in the city of Huancavelica. The city of Huancavelica has a population of approximately 50,000.00 inhabitants and 10,680.00 users of drinking water and sewerage according to the source Companies Providing This Service, the same one that is located in the western chain and central saw range of Perú and belongs to a cold climate. The sample was extracted through Companies Providing This Service EMAPA Huancavelica SA (Anonymous Society), which corresponds to 1,296 data from the consumption of water in cubic meters of each dwelling located in the various categories of each sector. The results obtained from the research indicate that the category that consumed more water during the period 2004-2018 was the domestic category, the same one that had an average of 1,152,123 cubic meters, this is due to the population growth of each year. On the other side, the category that consumed the least water was the social category, the average consumption of which was 11,903.47 cubic meters. In addition, the greatest variability in water consumption is in the state category, the total variation being equal to 21.6%. In the Huancavelica city, water consumption has a growing trend and to predict the volume of drinking water consumption by 2030, water consumption was transformed by first differences, using the ARIMA (Autoregressive Integrated Moving Average) model for total consumption model (0-1-1) (2-0-0)-12 and for the domestic consumption the ARIMA model (0-1-2) (0-0-2)-12. On the other hand, water consumption was analyzed on a monthly basis in which there is greater variability for the months June-6 and December-12. It was taken into account for the calculation of the endowment the domestic consumption, having values ranging from 6.45 L/inhab/day until 1,460 L/inhab/day, which reflects a considerable variation to consider. The average value in the spring station is 109.44 L/inhab/day, in the summer station it is 116.93 L/inhab/day, in the autumn station it is 117.17 L/inhab/day and in the winter station it is 108.48 L/inhab/day. Also, the average minimum endowment equal to 7.66 L/inhab/day was obtained, the average maximum endowment is of 569.03 L/inhab/day and the actual endowment 113.01 L/inhab/day. Finally, it is concluded that the estimated average actual endowment for the Huancavelica city, that is to say, 113.01 L/inhab/day, is much less than that indicated in the Norma OS.100 of the Basic Considerations of Sanitary Infrastructure Design of the RNE (Reglamento Nacional de Edificaciones), the same one that mentions the endowment equal to 180 L/inhab/day for cold climates, which means a reduction of costs in the dimensioning of hydraulic structures and sanitation and drinking water works.

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Valley-mountain circulation associated with precipitation formation in the tropical Andes (Rio Santa Basin)

Cited by 2 publications

References 61 publications

Valley–Mountain Circulation Associated with the Diurnal Cycle of Precipitation in the Tropical Andes (Santa River Basin, Peru)

Valley–Mountain Circulation Associated with the Diurnal Cycle of Precipitation in the Tropical Andes (Santa River Basin, Peru)

Determination of the Real Dotation and Forecast of the Potable Water System in the Huancavelica City, Peru

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