Spatial and Temporal Analysis of El Niño Impact on Land and Forest Fire in Kalimantan and Sumatra

Agromet

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Title Spatial and Temporal Analysis of El Niño Impact on Land and Forest Fire in Kalimantan and Sumatra
Spatial and Temporal Analysis of El Niño Impact on Land and Forest Fire in Kalimantan and Sumatra
 
Creator Nurdiati, Sri
Sopaheluwakan, Ardhasena
Septiawan, Pandu
 
Subject drought
empirical orthogonal function
fire regime
hotspots
singular value decomposition
drought
empirical orthogonal function
fire regime
hotspots
singular value decomposition
 
Description Land and forest fires in Kalimantan and Sumatra, Indonesia occurred annually at different magnitude and duration. Climate and sea interaction, like El Niño, influences the severity of dry seasons preceding the fires. However, research on the influence of El Niño intensity to fire regime in Kalimantan and Sumatra is limited. Therefore, this study aims to analyze the spatial and temporal patterns of the effects of El Niño intensity on land and forest fires in fire-prone provinces in Indonesia. Here, we applied the empirical orthogonal function analysis based on singular value decomposition to determine the dominant patterns of hotspots and rainfall data that evolve spatially and temporally. For analysis, the study required the following data: fire hotspots, dry-spell, and rainfall for period 2001-2019. This study revealed that El Niño intensity had a different impacts for each province. Generally, El Niño will influence the severity of forest fire events in Indonesia. However, we found that the impact of El Niño intensity varied for Kalimantan, South Sumatra, and Riau Province. Kalimantan was the most sensitive province to the El Niño event. The duration and number of hotspots in Kalimantan increased significantly even in moderate El Niño event. This was different for South Sumatra, where the duration and number of hotspots only increased significantly when a strong El Niño event occurred.
Land and forest fires in Kalimantan and Sumatra, Indonesia occurred annually at different magnitude and duration. Climate and sea interaction, like El Niño, influences the severity of dry seasons preceding the fires. However, research on the influence of El Niño intensity to fire regime in Kalimantan and Sumatra is limited. Therefore, this study aims to analyze the spatial and temporal patterns of the effects of El Niño intensity on land and forest fires in fire-prone provinces in Indonesia. Here, we applied the empirical orthogonal function analysis based on singular value decomposition to determine the dominant patterns of hotspots and rainfall data that evolve spatially and temporally. For analysis, the study required the following data: fire hotspots, dry-spell, and rainfall for period 2001-2019. This study revealed that El Niño intensity had a different impacts for each province. Generally, El Niño will influence the severity of forest fire events in Indonesia. However, we found that the impact of El Niño intensity varied for Kalimantan, South Sumatra, and Riau Province. Kalimantan was the most sensitive province to the El Niño event. The duration and number of hotspots in Kalimantan increased significantly even in moderate El Niño event. This was different for South Sumatra, where the duration and number of hotspots only increased significantly when a strong El Niño event occurred.
 
Publisher PERHIMPI (Indonesian Association of Agricultural Meteorology)
 
Date 2021-01-25
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://journal.ipb.ac.id/index.php/agromet/article/view/31804
10.29244/j.agromet.35.1.1-10
 
Source Agromet; Vol. 35 No. 1 (2021): JUNE 2021; 1-10
2655-660X
0126-3633
10.29244/j.agromet.35.1
 
Language eng
 
Relation http://journal.ipb.ac.id/index.php/agromet/article/view/31804/21024
 
Rights Copyright (c) 2021 Sri Nurdiati, Ardhasena Sopaheluwakan, Pandu Septiawan
https://creativecommons.org/licenses/by-nc/4.0
 

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