Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed

Rainfed farming is vulnerable to climate variability, which changes rainfall patterns. Rainfall variability disrupts rainfed rice cultivation because a change in rainfall will affect the rice crop calendar. An analysis of long-term trends over a specific area is required to understand rainfall varia...

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Main Authors: Trinugroho, Muchamad Wahyu, Arif, Sigit Supadmo, Susanto, Sahid, Nugroho, Bayu Dwi Apri, Prabowo, Abi
Format: Article
Language:English
Published: Department of Soil Science, Faculty of Agriculture, Universitas Sebelas Maret 2022
Subjects:
Online Access:https://repository.ugm.ac.id/278813/1/Changes-in-Rainfall-Pattern-in-Bengawan-Solo-SubWatershedSains-Tanah.pdf
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author Trinugroho, Muchamad Wahyu
Arif, Sigit Supadmo
Susanto, Sahid
Nugroho, Bayu Dwi Apri
Prabowo, Abi
author_facet Trinugroho, Muchamad Wahyu
Arif, Sigit Supadmo
Susanto, Sahid
Nugroho, Bayu Dwi Apri
Prabowo, Abi
author_sort Trinugroho, Muchamad Wahyu
collection UGM
description Rainfed farming is vulnerable to climate variability, which changes rainfall patterns. Rainfall variability disrupts rainfed rice cultivation because a change in rainfall will affect the rice crop calendar. An analysis of long-term trends over a specific area is required to understand rainfall variability. The aim of this study was to assess climate variability in terms of rainfall magnitude and frequency by analyzing spatial and temporal rainfall trends in Bengawan Solo Sub-Watershed as well as the rainfed rice production. Daily rainfall data from 10 rain gauge stations over the sub-watershed area from the years 1975 to 2020 were used. The data was managed and collected by the Bengawan Solo Watershed authority. Pearson, Mann-Kendall, and Sen’s Slope tests were applied to assess the recorded data correlation, rainfall trends, and magnitude of trends into annual, monthly, and 10-day. The findings of the study indicated the spatial and temporal inhomogeneous rainfall pattern for all locations for 10-day, monthly and annual patterns. The mountainous regions at Tawang Mangu and Ngrambe stations tend to experience an upward trend (positive magnitude), while the coastal regions at Nglirip and Bojonegoro stations have a downward trend(negative magnitude). Those trends also confirmed that coastal regions would be drier than mountainous regions in the future. Understanding this rainfall trend can assist with rainfed farming strategic planning
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spelling oai:generic.eprints.org:2788132023-11-01T07:11:10Z https://repository.ugm.ac.id/278813/ Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed Trinugroho, Muchamad Wahyu Arif, Sigit Supadmo Susanto, Sahid Nugroho, Bayu Dwi Apri Prabowo, Abi Horticultural Production Rainfed farming is vulnerable to climate variability, which changes rainfall patterns. Rainfall variability disrupts rainfed rice cultivation because a change in rainfall will affect the rice crop calendar. An analysis of long-term trends over a specific area is required to understand rainfall variability. The aim of this study was to assess climate variability in terms of rainfall magnitude and frequency by analyzing spatial and temporal rainfall trends in Bengawan Solo Sub-Watershed as well as the rainfed rice production. Daily rainfall data from 10 rain gauge stations over the sub-watershed area from the years 1975 to 2020 were used. The data was managed and collected by the Bengawan Solo Watershed authority. Pearson, Mann-Kendall, and Sen’s Slope tests were applied to assess the recorded data correlation, rainfall trends, and magnitude of trends into annual, monthly, and 10-day. The findings of the study indicated the spatial and temporal inhomogeneous rainfall pattern for all locations for 10-day, monthly and annual patterns. The mountainous regions at Tawang Mangu and Ngrambe stations tend to experience an upward trend (positive magnitude), while the coastal regions at Nglirip and Bojonegoro stations have a downward trend(negative magnitude). Those trends also confirmed that coastal regions would be drier than mountainous regions in the future. Understanding this rainfall trend can assist with rainfed farming strategic planning Department of Soil Science, Faculty of Agriculture, Universitas Sebelas Maret 2022 Article PeerReviewed application/pdf en https://repository.ugm.ac.id/278813/1/Changes-in-Rainfall-Pattern-in-Bengawan-Solo-SubWatershedSains-Tanah.pdf Trinugroho, Muchamad Wahyu and Arif, Sigit Supadmo and Susanto, Sahid and Nugroho, Bayu Dwi Apri and Prabowo, Abi (2022) Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed. SAINS TANAH – Journal of Soil Science and Agroclimatology, 19 (2). pp. 249-260. ISSN 356-1424 http://jurnal.uns.ac.id/tanah https://dx.doi.org/10.20961/stjssa.v19i2.61640
spellingShingle Horticultural Production
Trinugroho, Muchamad Wahyu
Arif, Sigit Supadmo
Susanto, Sahid
Nugroho, Bayu Dwi Apri
Prabowo, Abi
Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed
title Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed
title_full Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed
title_fullStr Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed
title_full_unstemmed Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed
title_short Changes in Rainfall Pattern in Bengawan Solo Sub-Watershed
title_sort changes in rainfall pattern in bengawan solo sub watershed
topic Horticultural Production
url https://repository.ugm.ac.id/278813/1/Changes-in-Rainfall-Pattern-in-Bengawan-Solo-SubWatershedSains-Tanah.pdf
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