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Works (30)

Investigating adaptive hedging policies for reservoir operation under climate change impacts

Journal of Hydrology
2023-04 | Journal article
Part of ISSN: 0022-1694
Contributors: Umut Okkan; Okan Fistikoglu; Zeynep Beril Ersoy; Ahmad Tamim Noori
Source: Self-asserted source
Umut Okkan

Doğu Karadeniz Havzası Lokal Meteorolojik Değişkenleri İçin Bir Ölçek İndirgeme Uygulaması ve Senaryo Esaslı Öngörüler

Teknik Dergi
2022-11-01 | Journal article | Author
Part of ISSN: 1300-3453
Contributors: Sinan NACAR; Murat Kankal; Umut Okkan
Source: Self-asserted source
Umut Okkan

Projecting aridity from statistically downscaled and bias-corrected variables for the Gediz Basin, Turkey

Journal of Water and Climate Change
2022-08-01 | Journal article
Part of ISSN: 2040-2244
Part of ISSN: 2408-9354
Contributors: Umut Kirdemir; Umut Okkan; Okan Fistikoglu
Source: Self-asserted source
Umut Okkan

Farklı İklim Değişikliği Senaryoları için Doğu Karadeniz Bölgesindeki Meteorolojik Kuraklıkların Eğilim Analizi

Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi
2022-06-01 | Journal article | Author
Part of ISSN: 2536-4618
Contributors: Sinan NACAR; Murat Åžan; Murat Kankal; Umut Okkan
Source: Self-asserted source
Umut Okkan

Evaluation of the suitability of NCEP/NCAR, ERA-Interim and, ERA5 reanalysis data sets for statistical downscaling in the Eastern Black Sea Basin, Turkey

Meteorology and Atmospheric Physics
2022-04 | Journal article | Author
Part of ISSN: 0177-7971
Part of ISSN: 1436-5065
Contributors: Sinan NACAR; Murat Kankal; Umut Okkan
Source: Self-asserted source
Umut Okkan

DİNAMİK SU BÜTÇESİ MODELİNE DESTEK VEKTÖR REGRESYONU ENTEGRASYONU

UludaÄŸ University Journal of The Faculty of Engineering
2022-03-18 | Journal article
Part of ISSN: 2148-4147
Contributors: Zeynep Beril ERSOY; Umut OKKAN; Okan FISTIKOÄžLU
Source: Self-asserted source
Umut Okkan

Embedding machine learning techniques into a conceptual model to improve monthly runoff simulation: A nested hybrid rainfall-runoff modeling

Journal of Hydrology
2021-07 | Journal article | Author
Part of ISSN: 0022-1694
Contributors: Umut Okkan; Zeynep Beril Ersoy; Ahmet Ali Kumanlioglu; Okan Fistikoglu
Source: Self-asserted source
Umut Okkan

Estimation of the Monthly Mean Temperature Values of the Eastern Black Sea Basin with Statistical Downscaling Method Using EraInterim Re-analysis Data

Doğal Afetler ve Çevre Dergisi
2021-01-25 | Journal article | Author
Part of ISSN: 2528-9640
Contributors: Sinan NACAR; Murat Kankal; Umut Okkan
Source: Self-asserted source
Umut Okkan

General Review of Calibration Process of Nonlinear Muskingum Model and Its Optimization by Up-to-Date Methods

Advances in Environmental Engineering and Green Technologies
2020 | Book chapter
Part of ISSN: 2326-9162
Part of ISSN: 2326-9170
Contributors: Umut Kırdemir; Umut Okkan
Source: Self-asserted source
Umut Okkan

Questioning of empirically derived and locally calibrated potential evapotranspiration equations for a lumped water balance model

Water Supply
2020-05-01 | Journal article
Part of ISSN: 1606-9749
Part of ISSN: 1607-0798
Contributors: Umut Okkan; Huseyin Kiymaz
Source: Self-asserted source
Umut Okkan

Comparison of Standardized Runoff Index and Apportionment Entropy in Hydrological Drought Analysis of Susurluk Basin Flows

4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings
2019-07-26 | Conference paper
Contributors: Umut Okkan; Hatice Altun
Source: Self-asserted source
Umut Okkan

Experiment of Different Mutation Strategies in Differential Evolution Algorithm Employed for Calibration of a Lumped Water Balance Model

4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings
2019-07-26 | Conference paper
Contributors: Umut Okkan; Umut Kırdemir
Source: Self-asserted source
Umut Okkan

Sensitivity Analysis For Control Parameters Of Hybrid And Standard PSO Algorithms: Application Via A Rainfall-runoff Model Calibration

4th International Symposium on Innovative Approaches in Engineering and Natural Sciences Proceedings
2019-07-26 | Conference paper
Contributors: Umut Okkan; Umut Kırdemir
Source: Self-asserted source
Umut Okkan

Farklı yanlılık düzeltme yöntemlerinin istatistiksel ölçeğe indirgenmiş yağış projeksiyonlarına uygulanması

Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi
2019-06-28 | Journal article | Author
Part of ISSN: 1301-7985
Contributors: Umut Kirdemir; Umut Okkan
Source: Self-asserted source
Umut Okkan

Usage of Differential Evolution Algorithm in the Calibration of Parametric Rainfall-Runoff Modeling

Advances in Computational Intelligence and Robotics
2018 | Book chapter
Part of ISSN: 2327-0411
Part of ISSN: 2327-042X
Contributors: Umut Okkan; Nuray Gedik; Halil Uysal
Source: Self-asserted source
Umut Okkan

Investigation of the Behavior of an Agricultural-Operated Dam Reservoir Under RCP Scenarios of AR5-IPCC

Water Resources Management
2018-06 | Journal article
Part of ISSN: 0920-4741
Part of ISSN: 1573-1650
Source: Self-asserted source
Umut Okkan

Downscaling of monthly precipitation using CMIP5 climate models operated under RCPs

Meteorological Applications
2016-07 | Journal article
Part of ISSN: 1350-4827
Contributors: Umut Okkan; Umut Kirdemir
Source: Self-asserted source
Umut Okkan

Simulating Nature: a Philosophical Study of Computer-simulation Uncertainties and Their Role in Climate Science and Policy Advice

Journal of the Royal Statistical Society Series A: Statistics in Society
2015-10-01 | Journal article
Part of ISSN: 0964-1998
Part of ISSN: 1467-985X
Contributors: Umut Okkan; Gül İnan
Source: Self-asserted source
Umut Okkan

Statistical downscaling of monthly reservoir inflows for Kemer watershed in Turkey: use of machine learning methods, multiple GCMs and emission scenarios

International Journal of Climatology
2015-09 | Journal article
Part of ISSN: 0899-8418
Contributors: Umut Okkan; Gul Inan
Source: Self-asserted source
Umut Okkan

Assessing the effects of climate change on monthly precipitation: Proposing of a downscaling strategy through a case study in Turkey

KSCE Journal of Civil Engineering
2015-05 | Journal article
Part of ISSN: 1226-7988
Part of ISSN: 1976-3808
Contributors: Umut Okkan
Source: Self-asserted source
Umut Okkan

Bayesian Learning and Relevance Vector Machines Approach for Downscaling of Monthly Precipitation

Journal of Hydrologic Engineering
2015-04 | Journal article
Part of ISSN: 1084-0699
Part of ISSN: 1943-5584
Contributors: Umut Okkan; Gul Inan
Source: Self-asserted source
Umut Okkan

Relevance vector machines approach for long-term flow prediction

Neural Computing and Applications
2014-11 | Journal article
Part of ISSN: 0941-0643
Part of ISSN: 1433-3058
Contributors: Umut Okkan; Zafer Ali Serbes; Pijush Samui
Source: Self-asserted source
Umut Okkan

Evaluating climate change effects on runoff by statistical downscaling and hydrological model GR2M

Theoretical and Applied Climatology
2014-07 | Journal article
Part of ISSN: 0177-798X
Part of ISSN: 1434-4483
Contributors: Umut Okkan; Okan Fistikoglu
Source: Self-asserted source
Umut Okkan

The combined use of wavelet transform and black box models in reservoir inflow modeling

Journal of Hydrology and Hydromechanics
2013-06-01 | Journal article
Part of ISSN: 0042-790X
Contributors: Umut Okkan; Zafer Ali Serbes
Source: Self-asserted source
Umut Okkan

Wavelet neural network model for reservoir inflow prediction

Scientia Iranica
2012-12 | Journal article
Part of ISSN: 1026-3098
Contributors: U. Okkan
Source: Self-asserted source
Umut Okkan

Rainfall-runoff modeling using least squares support vector machines

Environmetrics
2012-09 | Journal article
Part of ISSN: 1180-4009
Contributors: Umut Okkan; Zafer Ali Serbes
Source: Self-asserted source
Umut Okkan

Using wavelet transform to improve generalization capability of feed forward neural networks in monthly runoff prediction

Scientific Research and Essays
2012-05-09 | Journal article
Part of ISSN: 1992-2248
Contributors: Umut Okkan
Source: Self-asserted source
Umut Okkan

Application of Levenberg-Marquardt Optimization Algorithm Based Multilayer Neural Networks for Hydrological Time Series Modeling

An International Journal of Optimization and Control: Theories & Applications (IJOCTA)
2011-06-30 | Journal article
Part of ISSN: 2146-5703
Part of ISSN: 2146-0957
Contributors: Umut OKKAN
Source: Self-asserted source
Umut Okkan

Statistical Downscaling of Monthly Precipitation Using NCEP/NCAR Reanalysis Data for Tahtali River Basin in Turkey

Journal of Hydrologic Engineering
2011-02 | Journal article
Part of ISSN: 1084-0699
Part of ISSN: 1943-5584
Contributors: Okan Fistikoglu; Umut Okkan
Source: Self-asserted source
Umut Okkan

Simulation of Temperature and Precipitation under the Climate Change Scenarios

Artificial Intelligence
Book chapter
Contributors: Umut Okkan; Gul Inan
Source: Self-asserted source
Umut Okkan