Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology
This study investigates the spatio-temporal distribution and trends of seasonal rainfall for different meteorological sub-divisions (MSDs) of India using statistical analysis and the innovative trend analysis (ITA) method. The gridded dataset of daily rainfall for 120 years from 1901 to 2020 was obt...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-08-01
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| Series: | Water Supply |
| Subjects: | |
| Online Access: | http://ws.iwaponline.com/content/22/8/6909 |
| _version_ | 1811183344852926464 |
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| author | Abhilash Singh Chauhan Rajesh Kumar Singh Maurya Alka Rani Anurag Malik Ozgur Kisi Abhishek Danodia |
| author_facet | Abhilash Singh Chauhan Rajesh Kumar Singh Maurya Alka Rani Anurag Malik Ozgur Kisi Abhishek Danodia |
| author_sort | Abhilash Singh Chauhan |
| collection | DOAJ |
| description | This study investigates the spatio-temporal distribution and trends of seasonal rainfall for different meteorological sub-divisions (MSDs) of India using statistical analysis and the innovative trend analysis (ITA) method. The gridded dataset of daily rainfall for 120 years from 1901 to 2020 was obtained from the India Meteorological Department (IMD) and analysed using statistical results of mean rainfall, standard deviation, coefficient of variation, skewness, kurtosis, maximum seasonal rainfall, percent deviation of rainfall, number of rainy days, rainfall intensity, rainfall categorization, trend detection, and cross-correlation coefficients. The period was divided into three quad-decadal times (QDT) of 40 years each (i.e., 1901–1940: QDT1, 1941–1980: QDT2, and 1981–2020: QDT3). A general decrease in the number of rainfall events was observed in all the seasons except for a few MSDs of northwest India showing a rise throughout the pre-monsoon season in recent times (QDT3). Significant trends were detected using the ITA method in seasonal rainfall in nearly all the MSDs of India. Our findings are highlighting the qualitative and quantitative characteristics of seasonal rainfall dynamics at the MSDs level which will be useful for comprehending the rainfall dynamics as impacted by climate change and climate variability in India, and may further lead the policymakers and stakeholders for making the best use of available water resources.
HIGHLIGHTS
Spatio-temporal distribution and performance of rainfall was explored.;
Spatial variability in timeseries was identified.;
Innovative trend analysis on rainfall was performed for each season to see the impact of climate change and climate variablity.;
Number of rainy days and rainfall intensity was analysed for each season.;
Findings highlight the qualitative and quantitative aspects of seasonal rainfall dynamics.; |
| first_indexed | 2024-04-11T09:46:19Z |
| format | Article |
| id | doaj.art-5d86aaca5a65410dac6d6115df758725 |
| institution | Directory Open Access Journal |
| issn | 1606-9749 1607-0798 |
| language | English |
| last_indexed | 2024-04-11T09:46:19Z |
| publishDate | 2022-08-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Supply |
| spelling | doaj.art-5d86aaca5a65410dac6d6115df7587252022-12-22T04:30:58ZengIWA PublishingWater Supply1606-97491607-07982022-08-012286909694410.2166/ws.2022.291291Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodologyAbhilash Singh Chauhan0Rajesh Kumar Singh Maurya1Alka Rani2Anurag Malik3Ozgur Kisi4Abhishek Danodia5 Department of Agricultural Meteorology, CCS Haryana Agricultural University, Hisar, Haryana 125004, India School of Earth Ocean and Climate Sciences, Indian Institute of Technology (IIT), Bhubaneswar, Odisha, India Division of Soil Physics, ICAR-Indian Institute of Soil Science, Bhopal, Madhya Pradesh 462038, India Punjab Agricultural University, Regional Research Station, Bathinda, Punjab, India Department of Civil Engineering, University of Applied Sciences, Lübeck 23562, Germany Agriculture & Soils Department, Indian Institute of Remote Sensing (IIRS), Dehradun, India This study investigates the spatio-temporal distribution and trends of seasonal rainfall for different meteorological sub-divisions (MSDs) of India using statistical analysis and the innovative trend analysis (ITA) method. The gridded dataset of daily rainfall for 120 years from 1901 to 2020 was obtained from the India Meteorological Department (IMD) and analysed using statistical results of mean rainfall, standard deviation, coefficient of variation, skewness, kurtosis, maximum seasonal rainfall, percent deviation of rainfall, number of rainy days, rainfall intensity, rainfall categorization, trend detection, and cross-correlation coefficients. The period was divided into three quad-decadal times (QDT) of 40 years each (i.e., 1901–1940: QDT1, 1941–1980: QDT2, and 1981–2020: QDT3). A general decrease in the number of rainfall events was observed in all the seasons except for a few MSDs of northwest India showing a rise throughout the pre-monsoon season in recent times (QDT3). Significant trends were detected using the ITA method in seasonal rainfall in nearly all the MSDs of India. Our findings are highlighting the qualitative and quantitative characteristics of seasonal rainfall dynamics at the MSDs level which will be useful for comprehending the rainfall dynamics as impacted by climate change and climate variability in India, and may further lead the policymakers and stakeholders for making the best use of available water resources. HIGHLIGHTS Spatio-temporal distribution and performance of rainfall was explored.; Spatial variability in timeseries was identified.; Innovative trend analysis on rainfall was performed for each season to see the impact of climate change and climate variablity.; Number of rainy days and rainfall intensity was analysed for each season.; Findings highlight the qualitative and quantitative aspects of seasonal rainfall dynamics.;http://ws.iwaponline.com/content/22/8/6909indiainnovative trend analysisrainfallrainy daysspatio-temporal analysis |
| spellingShingle | Abhilash Singh Chauhan Rajesh Kumar Singh Maurya Alka Rani Anurag Malik Ozgur Kisi Abhishek Danodia Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology Water Supply india innovative trend analysis rainfall rainy days spatio-temporal analysis |
| title | Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology |
| title_full | Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology |
| title_fullStr | Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology |
| title_full_unstemmed | Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology |
| title_short | Rainfall dynamics observed over India during last century (1901–2020) using innovative trend methodology |
| title_sort | rainfall dynamics observed over india during last century 1901 2020 using innovative trend methodology |
| topic | india innovative trend analysis rainfall rainy days spatio-temporal analysis |
| url | http://ws.iwaponline.com/content/22/8/6909 |
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