Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia

In order to overview the impact of climate change on runoff from forested catchments over Asian countries, we collected water balance data from fifteen long-term catchment monitoring stations (total monitoring period 1975–2018, not continuous), spanning from Sabah, Malaysia (our southernmost site),...

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Main Authors: Nobuaki Tanaka, Lai, Yen-Jen, Sangjun Im, Maznah Mahali, Venus Tuankrua, Koichiro Kuraji, Fera Cleophas, Chatchai Tantasirin, Mie Gomyo, Tseng, Chun-Wei, Katsushige Shiraki, Norifumi Hotta, Yuko Asano, Hiroki Inoue, Anand Nainar
Format: Article
Language:English
English
Published: MDPI 2023
Subjects:
Online Access:https://eprints.ums.edu.my/id/eprint/42210/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/42210/2/FULL%20TEXT.pdf
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author Nobuaki Tanaka
Lai, Yen-Jen
Sangjun Im
Maznah Mahali
Venus Tuankrua
Koichiro Kuraji
Fera Cleophas
Chatchai Tantasirin
Mie Gomyo
Tseng, Chun-Wei
Katsushige Shiraki
Norifumi Hotta
Yuko Asano
Hiroki Inoue
Anand Nainar
author_facet Nobuaki Tanaka
Lai, Yen-Jen
Sangjun Im
Maznah Mahali
Venus Tuankrua
Koichiro Kuraji
Fera Cleophas
Chatchai Tantasirin
Mie Gomyo
Tseng, Chun-Wei
Katsushige Shiraki
Norifumi Hotta
Yuko Asano
Hiroki Inoue
Anand Nainar
author_sort Nobuaki Tanaka
collection UMS
description In order to overview the impact of climate change on runoff from forested catchments over Asian countries, we collected water balance data from fifteen long-term catchment monitoring stations (total monitoring period 1975–2018, not continuous), spanning from Sabah, Malaysia (our southernmost site), to Hokkaido, Japan (our northernmost site). We then employed an elasticity analysis to the dataset to examine how the annual runoff from each catchment responded to inter-annual fluctuations in annual rainfall and annual mean air temperature. As a result, we found that (1) the annual runoff was sensitive to annual rainfall for all the catchments examined. In addition, (2) the annual runoff from seven of the fifteen catchments was sensitive to inter-annual changes in the mean air temperature, which was likely due to changes in forest evapotranspiration. Three catchments, however, exhibited an increased runoff in a hot year. Finally, (3) the annual rainfall from the previous year (carry-over soil moisture) was important in explaining the variation in annual runoff in two tropical montane forest catchments. This study may serve as one of the pilot studies toward a comprehensive understanding of the climate elasticity of runoff in countries over Asia, because the examined catchments are unevenly and sparsely distributed over the area.
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spelling ums.eprints-422102024-12-10T06:59:04Z https://eprints.ums.edu.my/id/eprint/42210/ Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia Nobuaki Tanaka Lai, Yen-Jen Sangjun Im Maznah Mahali Venus Tuankrua Koichiro Kuraji Fera Cleophas Chatchai Tantasirin Mie Gomyo Tseng, Chun-Wei Katsushige Shiraki Norifumi Hotta Yuko Asano Hiroki Inoue Anand Nainar GB447 Climatic geomorphology QH1-(199.5) General Including nature conservation, geographical distribution In order to overview the impact of climate change on runoff from forested catchments over Asian countries, we collected water balance data from fifteen long-term catchment monitoring stations (total monitoring period 1975–2018, not continuous), spanning from Sabah, Malaysia (our southernmost site), to Hokkaido, Japan (our northernmost site). We then employed an elasticity analysis to the dataset to examine how the annual runoff from each catchment responded to inter-annual fluctuations in annual rainfall and annual mean air temperature. As a result, we found that (1) the annual runoff was sensitive to annual rainfall for all the catchments examined. In addition, (2) the annual runoff from seven of the fifteen catchments was sensitive to inter-annual changes in the mean air temperature, which was likely due to changes in forest evapotranspiration. Three catchments, however, exhibited an increased runoff in a hot year. Finally, (3) the annual rainfall from the previous year (carry-over soil moisture) was important in explaining the variation in annual runoff in two tropical montane forest catchments. This study may serve as one of the pilot studies toward a comprehensive understanding of the climate elasticity of runoff in countries over Asia, because the examined catchments are unevenly and sparsely distributed over the area. MDPI 2023 Article NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/42210/1/ABSTRACT.pdf text en https://eprints.ums.edu.my/id/eprint/42210/2/FULL%20TEXT.pdf Nobuaki Tanaka and Lai, Yen-Jen and Sangjun Im and Maznah Mahali and Venus Tuankrua and Koichiro Kuraji and Fera Cleophas and Chatchai Tantasirin and Mie Gomyo and Tseng, Chun-Wei and Katsushige Shiraki and Norifumi Hotta and Yuko Asano and Hiroki Inoue and Anand Nainar (2023) Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia. Atmosphere, 14. pp. 1-13. https://doi.org/10.3390/atmos14040629
spellingShingle GB447 Climatic geomorphology
QH1-(199.5) General Including nature conservation, geographical distribution
Nobuaki Tanaka
Lai, Yen-Jen
Sangjun Im
Maznah Mahali
Venus Tuankrua
Koichiro Kuraji
Fera Cleophas
Chatchai Tantasirin
Mie Gomyo
Tseng, Chun-Wei
Katsushige Shiraki
Norifumi Hotta
Yuko Asano
Hiroki Inoue
Anand Nainar
Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia
title Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia
title_full Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia
title_fullStr Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia
title_full_unstemmed Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia
title_short Climate elasticity of annual runoff: observation in fifteen forested catchments on a latitudinal gradient in east Asia
title_sort climate elasticity of annual runoff observation in fifteen forested catchments on a latitudinal gradient in east asia
topic GB447 Climatic geomorphology
QH1-(199.5) General Including nature conservation, geographical distribution
url https://eprints.ums.edu.my/id/eprint/42210/1/ABSTRACT.pdf
https://eprints.ums.edu.my/id/eprint/42210/2/FULL%20TEXT.pdf
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