Modeling Spatiotemporal Changes in Rainfall for Use in Dynamic and Distributed Rainfall-Runoff Models

Parsamehr, Amir Hossein; Salajegheh, Ali; Khalighi, Shahram; Ahmadaali, Khaled

doi:10.22059/jrwm.2023.360794.1712

Document Type : Research Paper

Authors

Department of Reclamation of Arid and Mountainous Region, Faculty of Natural Resources, University of Tehran, Tehran, Iran

10.22059/jrwm.2023.360794.1712

Abstract

Aim: The aim of this study is to propose an approach for modeling spatiotemporal changes in rainfall that can be used as input for rainfall-runoff models.
Research Method: To achieve this, rainfall data from four rain gauge stations in the Paskouhak catchment were used. Five parameters, including elevation, slope, aspect, longitude, and latitude, were identified. The different combinations of these five parameters were prioritized using the gamma test in WinGammaTM software. After the use of different regression models, the best model was selected based on evaluation criteria such as R2, RMSE, and the Taylor diagram. A raster map of a selected rainfall event was drawn in the Arc GIS environment. Finally, using the proposed approach of relative equations, the spatiotemporal changes in rainfall were modeled.
Results: The results showed that using a second-degree nonlinear model and parameters of elevation and latitude, it is possible to accurately obtain the spatial distribution of rainfall in the form of a regular pixel grid (100 square meters) with high precision (R2=0.917 and RMSE=0.2277).
Conclusion: In different rainfall events in small catchment areas, the variation in rainfall in each pixel is almost constant relative to other pixels, including the rain gauge station, the proposed approach in this study can model the spatiotemporal changes of each rainfall event as a three-dimensional matrix in the study area. The approach can be valuable in predicting potential flood events and in water resource management and planning. However, further research is required to validate the results and test the approach in other areas.

Keywords

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Journal of Range and Watershed Managment

Modeling Spatiotemporal Changes in Rainfall for Use in Dynamic and Distributed Rainfall-Runoff Models

References

References

Alijani, B., & Zahedi, M. (2002). Statistical and synoptic analysis of Azarbaijan area rainfall. Iranian Journal of Research in Geography, 65, 202-217. (In Persian).

Ayoubi Ayoublu, S., Vafakhah, M., & Pourghasemi, H. (2022). Flood Risk Assessment using Multi-Criteria Decision-Making Models (MCDM) and Data Mining Methods (Case Study: Shiraz District 4). Journal of Water and Soil Science, 26 (3), 247-265. (In Persian).

Ghayur, H. A., & Masoudiyan, S. A. (1996). An spatial analysis of elevation – precipitation models (Case study: Iran). Geographic Researches, 41, 124-143. (In Persian).

Houghton, J. G. (1979). A Model for Orographic Precipitation in the North-Central Great Basin. Monthly Weather Review, 107, 1462-1475.

Loukas, A., & Quick, M. C. (1996). Effect of climate change on hydrologic regime of two climatically different watersheds. Journal of Hydrologic Engineering, 1(2), 77-87.

Nouri, M., & Salmasi, F. (2019). Predicting seepage of earth dams using artificial intelligence techniques. Irrigation Sciences and Engineering (scientific journal of agriculture), 42(1), 83-97. (In Persian).

Panahi, H., Asadi, S. (2018). Prediction of Nano-Droplet Spreading on the Surface using the Multivariate Non-Linear Regression. Advanced Materials and New Coatings, 7(26), 1881-1886. (In Persian).

Sigaroodi, S. K., Chen, Q., Ebrahimi, S., Nazari, A., and Choobin, B. (2014). Long-term precipitation forecast for drought relief using atmospheric circulation factors: a study on the Maharloo Basin in Iran, Hydrology and Earth System Sciences, 18, 1995–2006.

Storr, D., & Ferguson, H. L. (1972, July). The distribution of precipitation in some mountainous Canadian watersheds, Paper presented in WMO Symposium on Distribution of Precipitation in Mountainous Areas, Geilo, Norway.

Withmore, J. S. (1972). The variation of mean annual rainfall with altitude and locality in South Africa, as determined by multiple curvilinear regression analysis, Distribution of precipitation in mountainous area, WMO Publication, 326.

Zahedi, M., Sari Sarraf, B., & Jamee, J. (2007). The Analysis of Spatio-Temporal Variations of Temperature in the North –West of Iran. Geography and development, 10, 183-198. (In Persian).

Volume 77, Issue 1
April 2024
Pages 33-49

Modeling Spatiotemporal Changes in Rainfall for Use in Dynamic and Distributed Rainfall-Runoff Models

References

References

Alijani, B., & Zahedi, M. (2002). Statistical and synoptic analysis of Azarbaijan area rainfall. Iranian Journal of Research in Geography, 65, 202-217. (In Persian).

Ayoubi Ayoublu, S., Vafakhah, M., & Pourghasemi, H. (2022). Flood Risk Assessment using Multi-Criteria Decision-Making Models (MCDM) and Data Mining Methods (Case Study: Shiraz District 4). Journal of Water and Soil Science, 26 (3), 247-265. (In Persian).

Ghayur, H. A., & Masoudiyan, S. A. (1996). An spatial analysis of elevation – precipitation models (Case study: Iran). Geographic Researches, 41, 124-143. (In Persian).

Houghton, J. G. (1979). A Model for Orographic Precipitation in the North-Central Great Basin. Monthly Weather Review, 107, 1462-1475.

Loukas, A., & Quick, M. C. (1996). Effect of climate change on hydrologic regime of two climatically different watersheds. Journal of Hydrologic Engineering, 1(2), 77-87.

Nouri, M., & Salmasi, F. (2019). Predicting seepage of earth dams using artificial intelligence techniques. Irrigation Sciences and Engineering (scientific journal of agriculture), 42(1), 83-97. (In Persian).

Panahi, H., Asadi, S. (2018). Prediction of Nano-Droplet Spreading on the Surface using the Multivariate Non-Linear Regression. Advanced Materials and New Coatings, 7(26), 1881-1886. (In Persian).

Sigaroodi, S. K., Chen, Q., Ebrahimi, S., Nazari, A., and Choobin, B. (2014). Long-term precipitation forecast for drought relief using atmospheric circulation factors: a study on the Maharloo Basin in Iran, Hydrology and Earth System Sciences, 18, 1995–2006.

Storr, D., & Ferguson, H. L. (1972, July). The distribution of precipitation in some mountainous Canadian watersheds, Paper presented in WMO Symposium on Distribution of Precipitation in Mountainous Areas, Geilo, Norway.

Withmore, J. S. (1972). The variation of mean annual rainfall with altitude and locality in South Africa, as determined by multiple curvilinear regression analysis, Distribution of precipitation in mountainous area, WMO Publication, 326.

Zahedi, M., Sari Sarraf, B., & Jamee, J. (2007). The Analysis of Spatio-Temporal Variations of Temperature in the North –West of Iran. Geography and development, 10, 183-198. (In Persian).

Volume 77, Issue 1April 2024Pages 33-49

Volume 77, Issue 1
April 2024
Pages 33-49