Assessment of changes in monthly streamflow using innovative polygon trend analysis in the South Indian Rivers

Gupta, Neha; Chavan, Sagar Rohidas

doi:10.1007/s12517-023-11767-6

Cited by 3 publications

(4 citation statements)

References 95 publications

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“…The IPTA method enables the detection of monthly and seasonal transitions and exhibits greater sensitivity in identifying monthly trends. By analyzing partial trend sequences instead of monotonic trend sequences, IPTA provides insights into both the quantitative and qualitative aspects of internal temporal variability [23,40]. Additionally, the IV-ITA method proves useful in examining potential positive and negative extremes by separately analyzing values in the low and high categories.…”

Section: Discussionmentioning

confidence: 99%

“…Studies using the IPTA method have been conducted globally in regions with various climates. For instance, Gupta and Chavan [23] analyzed monthly stream flows from 1970 to 2018 using the IPTA method in basins with different climatic characteristics in South India. They observed an increase in the average monthly flow during low-flow months in some sub-basins of the Mahanadi River in a tropical monsoon climate.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies utilizing statistical and graphical methods have investigated global changes in hydrological regimes, confirming behavioral shifts [4,[21][22][23][24][25][26][27][28]. Li et al [4] observed declining trends in annual discharge in the Songhua River Basin post-1990.…”

Section: Introductionmentioning

confidence: 92%

“…Akçay et al [22] found notable decreasing trends in monthly stream flows in Turkey's Eastern Black Sea Basin, particularly in summer. Gupta and Chavan [23] observed various trends in monthly streamflow values across four major river basins in southern India. Malani and Yadav [25] identified a significant decrease in daily runoff in the Upper Tapi Basin, India.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Combined Seasonal Mann–Kendall and Innovative Approach for the Trend Analysis of Streamflow Rate in Two Croatian Rivers

Yıldız,

Di Nunno,

Đurin

et al. 2024

Water

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Climate change profoundly impacts hydrological systems, particularly in regions such as Croatia, which is renowned for its diverse geography and climatic variability. This study examined the effect of climate change on streamflow rates in two Croatian rivers: Bednja and Gornja Dobra. Using seasonal Mann–Kendall (MK) tests, overall streamflow trends were evaluated. Additionally, innovative polygon trend analysis (IPTA), innovative visualization for innovative trend analysis (IV-ITA), and Bayesian changepoint detection and time series decomposition (BEAST) algorithms were used to assess the trends’ magnitudes and transitions. The seasonal MK analysis identified significant decreasing trends, primarily during summer. The results of IPTA and IV-ITA revealed consistent decreasing trends throughout most months, with a notable increase in September, especially at high flow values. The rivers’ behavior differed between the first and second halves of the month. BEAST analysis detected abrupt changes, including earlier shifts (1951–1968) in the Bednja and more recent ones (2013–2015) in both the Bednja and, to a lesser extent, the Gornja Dobra rivers. This comprehensive approach enhances our understanding of long-term streamflow trends and short-term fluctuations induced by climate change.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Combined Seasonal Mann–Kendall and Innovative Approach for the Trend Analysis of Streamflow Rate in Two Croatian Rivers

Yıldız,

Di Nunno,

Đurin

et al. 2024

Water

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Trends of meteorological and hydrological droughts and associated parameters using innovative approaches

Abu Arra,

Alashan,

Şişman

2024

Journal of Hydrology

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Innovative and polygonal trend analysis of temperature in agro climatic zones of India

Singh,

Sah,

Das

et al. 2024

Sci Rep

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Understanding the long-term trends in temperature is crucial for assessing the impacts of climate change on agriculture, human and animal health, and natural habitats. An in-depth analysis of long-term spatio-temporal trends of monthly maximum and minimum temperatures along with Diurnal Temperature Range (DTR) from 1951 to 2022 in various Agro-Climatic Zones (ACZs) of India was performed using newly introduced Innovative Polygonal Trend Analysis (IPTA) and Innovative Trend Analysis (ITA) along with traditional Mann-Kendall (MK) or modified Mann-Kendall (m-MK) tests. The MK/m-MK and IPTA assessments detected significant trends in 44.6% and 86% of the time series data, respectively, while the ITA method detected significant trends in every time series data. The southern, western, and central parts of India are consistently experiencing rising monthly maximum and minimum temperatures. The western dry region, Central Plateau & Hills, East Coast Plains & Hills, Gujarat Plains & Hills, West Coast Plains & Hills, Southern Plateau & Hills, Western Plateau & Hills and Eastern Himalayan Region predominantly show increasing trends in both maximum and minimum temperatures in all months. The Indo-Gangetic Plains (Middle, Trans, Upper and Lower) exhibit decreasing trends in maximum temperatures during January, February, May, and June. The DTR showed increasing trends in the northern and western parts, while it has increasing trends in the central and southern parts of the country. The results of this study provide valuable information to assist in precise and informed decision-making on agricultural resource management and socio-economic policies. Supplementary Information The online version contains supplementary material available at 10.1038/s41598-024-78597-8.

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Assessment of changes in monthly streamflow using innovative polygon trend analysis in the South Indian Rivers

Cited by 3 publications

References 95 publications

A Combined Seasonal Mann–Kendall and Innovative Approach for the Trend Analysis of Streamflow Rate in Two Croatian Rivers

A Combined Seasonal Mann–Kendall and Innovative Approach for the Trend Analysis of Streamflow Rate in Two Croatian Rivers

Trends of meteorological and hydrological droughts and associated parameters using innovative approaches

Innovative and polygonal trend analysis of temperature in agro climatic zones of India

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