Hydrological Modelling In Arid And Semi-arid Areas Pdf

hydrological modelling in arid and semi-arid areas pdf

File Name: hydrological modelling in arid and semi-arid areas .zip
Size: 1591Kb
Published: 07.04.2021

Understanding of hydrological processes, including consideration of interactions between vegetation growth and water transfer in the root zone, underpins efficient use of water resources in arid-zone agriculture. Models can be categorized into three classes: 1 regional distributed hydrological models with various land uses, 2 groundwater-soil-plant-atmosphere continuum models that neglect lateral water fluxes, and 3 coupled models with groundwater flow and unsaturated zone water dynamics. This review highlights, in addition, future research challenges in modeling arid-zone agricultural systems, e.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI:

UC Santa Barbara

Despite the high accuracy of the model, the lack of rainfall data at short time scales hour and less than hour restricted implementation of the model especially for long time simulations. Some studies use simple division for daily rainfall disaggregation into the hourly values to provide data requirements of HSPF model. In simple division, each rainfall event is divided into 24 pulse stochastically and the peak flows may not properly being simulated due to the lower rainfall intensities.

In this study, random parameter Bartlett—Lewis rectangular pulse BLRP model was implemented to disaggregate daily rainfall time series into the hourly values and the results compared with that of simple division. The calibrated model was then implemented to disaggregate daily rainfall data into the hourly values. To compare two disaggregation approaches, daily stream flow simulation by HSPF model is initialized in 2 scenarios by applying the hourly rainfall data resulted from two disaggregation methods.

The results indicated that while using the simple division method leads to the underestimation of peak flows, using the BLRP model improved peak flow simulations.

This study indicated usability of the BLRP model for rainfall disaggregation in arid and semi-arid regions with limited fine scale precipitation data availability. This is a preview of subscription content, access via your institution. Rent this article via DeepDyve. Abdellatif M, Atherton W, Alkhaddar R Application of the stochastic model for temporal rainfall disaggregation for hydrological studies in north western England.

J Hydroinf 15 2 — Tarbiat Modarres University, Tehran. Google Scholar. J hydrol — AJCC — Model development. J Am Water Resour Assoc 34 1 — Agr Water Manag — Water Resour Res 30 12 — IAHS Publ. J Hydrol Eng 13 6 — J Hydrol NZ. Debele B, Srinivasan R, Yves Parlange J Accuracy evaluation of weather data generation and disaggregation methods at finer timescales. Adv Water Resour — In: Singh VP ed Computer models of watershed hydrology. Water Resources Publications Highlands Ranch, pp — JWSC 21 2 — J Hydrol — FAO Report on the agro-ecological zones project.

World Soil Resources Report n. J Am Water Resour As 33 2 — Hamon RW Estimating potential evapotranspiration. Water Sci Technol — Hoseini M Effect of land use changes on water balance and suspended sediment yield of Taleghan catchment, Iran. Hydrocomp Inc Hydrocomp water quality operations manual. Hydrocomp, Inc, Palo Alto. J Environ Sci Heal A 42 11 — Water Environ Res 79 6 — Jebari S Water erosion modelling using fractal rainfall disaggregation, a study in semiarid Tunisia.

J Hydrol 1—4 — J Hydrol. Koutsoyiannis D A stochastic disaggregation method for design storm and flood synthesis. Water Resour Res — Koutsoyiannis D, Onof C Rainfall disaggregation using adjusting procedures on a Poisson cluster model. European Geosciences Union, Vienna, p Water Resour 41 5 — J Hydrol —— Rango A, Martinec J Revisiting the degree-day method for snowmelt computations. Water Resour Bull 31 4 — JRWM 66 3 — J Geophys Res — Hydrol Sci J 53 5 — J Hydrol Eng 14 8 — JWSS 19 73 : 73— Trans ASAE 47 4 : — Hydrol Sci J — J Am Water Resour As 41 2 — Singh Vijay P Kinematic wave modeling in water resources.

Wiley, New York. Clim Change — Taylor KE Summarizing multiple aspects of model performance in a single diagram. Harper and Row, New York. Download references. The authors would like to thank Iran Ministry of Power for their kind help and technical support for providing the data for this study. Correspondence to Esmaeel Dodangeh. Reprints and Permissions.

Dodangeh, E. Usability of the BLRP model for hydrological applications in arid and semi-arid regions with limited precipitation data. Earth Syst. Download citation. Received : 03 March Accepted : 28 April Published : 13 May Issue Date : June Search SpringerLink Search. Immediate online access to all issues from Subscription will auto renew annually.

References Abdellatif M, Atherton W, Alkhaddar R Application of the stochastic model for temporal rainfall disaggregation for hydrological studies in north western England. Acknowledgements The authors would like to thank Iran Ministry of Power for their kind help and technical support for providing the data for this study.

View author publications. Rights and permissions Reprints and Permissions. About this article. Cite this article Dodangeh, E.

We apologize for the inconvenience...

This dissertation employs hydrologic modeling to assess probable impacts of changes in vegetation cover and in the channel network on streamflow and floodplain groundwater levels in the Baviaanskloof catchment, South Africa. The Baviaanskloof serves as a case study of a semi-arid, mountainous, meso-scale catchment that has been subject to agricultural land use and is regionally important for water supply. In this catchment livestock grazing has resulted in a loss of subtropical thicket cover on hillslopes and the channel network in the central valley has become increasingly connected and incised. In order to build an appropriate model of the Baviaanskloof, streamflow, groundwater, surface runoff, and soil moisture data were analyzed for diagnostic patterns that revealed information about hydrologic connectivity at different spatial and temporal scales. Critical results of these analyses were that: a the central valley alluvial aquifer is recharged by subsurface flows from surrounding mountain areas following two major pathways, a likely interflow contribution following large rainfall events and a more temporally consistent contribution from the bedrock aquifer, and b the dominant direction of exchange of water between the alluvial aquifer and the main floodplain channel regularly fluctuates between losing and gaining.

Despite the high accuracy of the model, the lack of rainfall data at short time scales hour and less than hour restricted implementation of the model especially for long time simulations. Some studies use simple division for daily rainfall disaggregation into the hourly values to provide data requirements of HSPF model. In simple division, each rainfall event is divided into 24 pulse stochastically and the peak flows may not properly being simulated due to the lower rainfall intensities. In this study, random parameter Bartlett—Lewis rectangular pulse BLRP model was implemented to disaggregate daily rainfall time series into the hourly values and the results compared with that of simple division. The calibrated model was then implemented to disaggregate daily rainfall data into the hourly values. To compare two disaggregation approaches, daily stream flow simulation by HSPF model is initialized in 2 scenarios by applying the hourly rainfall data resulted from two disaggregation methods.

Irrigated agriculture is a key activity in water resources management at the river basin level in arid and semi-arid areas, since this sector consumes the largest part of the water resources overall. The current study proposes a methodology to evaluate the water footprint WF of the irrigated agriculture sector at the river basin level, through a simulation of the anthropised water cycle combining a hydrological model and a decision support system. The main difference from the approaches that have already been used is that the new methodology includes the limitations of the system for the exploitation of water resources where the irrigated areas are located, and it considers the hydrological principles governed by the law of continuity of mass.

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. Understanding the mechanism of complicated hydrological processes is important for sustainable management of water resources in an arid area.

Rehana, G. Sireesha Naidu, N. Monish, U.

Access options

Despite the high accuracy of the model, the lack of rainfall data at short time scales hour and less than hour restricted implementation of the model especially for long time simulations. Some studies use simple division for daily rainfall disaggregation into the hourly values to provide data requirements of HSPF model. In simple division, each rainfall event is divided into 24 pulse stochastically and the peak flows may not properly being simulated due to the lower rainfall intensities. In this study, random parameter Bartlett—Lewis rectangular pulse BLRP model was implemented to disaggregate daily rainfall time series into the hourly values and the results compared with that of simple division. The calibrated model was then implemented to disaggregate daily rainfall data into the hourly values. To compare two disaggregation approaches, daily stream flow simulation by HSPF model is initialized in 2 scenarios by applying the hourly rainfall data resulted from two disaggregation methods. The results indicated that while using the simple division method leads to the underestimation of peak flows, using the BLRP model improved peak flow simulations.

In order to overcome this, new models with distinct representations of hydrological processes continue to be developed, incorporating spatial data and geoprocessing tools. It is a conceptual model developed with the purpose of contributing mainly to the hydrological modeling of basins inserted in semi-arid regions.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. DOI:

С шифровалкой все в полном порядке - как. Бринкерхофф хотел было уже взять следующий документ, но что-то задержало его внимание. В самом низу страницы отсутствовала последняя СЦР. В ней оказалось такое количество знаков, что ее пришлось перенести в следующую колонку.

Затем облокотился о плиту, поправил широкие серые брюки и крахмальную рубашку. - И долго ты собираешься здесь сидеть.

4 COMMENTS

Biopopoppi

REPLY

Sharma, Director of the National Institute of Hydrology, India, and a member of the GWADI Steering Committee. Access. PDF; Export citation.

Villette B.

REPLY

Simon haykin communication systems 4th edition pdf download opel astra service manual pdf

Nazar C.

REPLY

Lonely planet japan pdf download deseo veronica a fleitas pdf

Debbie P.

REPLY

Arid and semi-arid regions are defined as areas where water is at its most scarce. The hydrological regime in these areas is extreme and highly variable, and.

LEAVE A COMMENT