Effects of Land Cover Change and Deforestation on Rainfall and Surface Temperature in  New Capital City of Indonesia

Safitri, Ramadani; Marzuki, Marzuki; Shafii, Mohammad Ali; Muharsyah, Robi; Ramadhan, Ravidho

doi:10.29303/jppipa.v8i6.2182

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…In DJF and SON, the trend of CDD slightly decreases indicating more days with no rainfall in the seasons. Previous studies reported decreased trends of extreme rainfall over the IKN using 20-year of combined satellite and rainfall datasets 8,9 which contrast with our findings. The difference result occurs might be due to a longer dataset (43 years) of surface rainfall that we used in this study.…”

Section: Rainfall Distributioncontrasting

confidence: 99%

“…A previous study utilized satellite and three rain gauges data to analyze the trend of heavy rainfall characteristics over IKN between 2016-2020 and found that the trends slightly decrease 8 . Another study examined changes in land cover and deforestation affecting surface temperatures and extreme rainfall using several satellites during 2001-2020 and found that extreme number of very wet days (R95p), consecutive dry days (CDD), and max 1-day precipitation (RX1day) have decreased 9 . Former studies mostly used satellite data to analyze extreme rainfall over the IKN.…”

Section: Introductionmentioning

confidence: 99%

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Drought index analysis on the Nusantara Capital City of Indonesia (IKN)

Sapan,

Winarno,

Meliani

et al. 2024

Eighth Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet

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The Indonesian Government have decided to relocate the capital city of Indonesia from DKI Jakarta to East Kalimantan Province in 2024. This new capital city of Indonesia called Nusantara Capital City (IKN) presents strategic issues regarding the lack of water availability and hydrometeorological disasters. Continuing the previous study about statistical comparison of rainfall extremes between Jakarta and IKN, this study on drought in IKN aims to investigate the water availability's condition by using drought index associated with rainfall intensity and number of no rain days. We analyze the trend of consecutive dry days (CDD), The highest one-day rainfall (RX1day), and Simple Precipitation Intensity (SDII) indices yearly and seasonally. The ground-based daily rainfall data at Sepinggan, Samarinda, Penajam Paser Utara, Balikpapan, and Sepaku during 1979-2022 (42 years) are used in this study. The Mann-Kendall method is carried out to detect the trend of each index. The preliminary results show that in general CDD shows no trend tendency over all stations. However, we found a tendency of a decrease CDD in Dec-Feb (DJF) and Sep-Oct (SON) indicating these periods have generally have no rainy days overall resulting in decreasing CDD relative to other seasons. However, the CDD tends to show a slight increase trend between 1980 and 2009. In 1997, the CDD index was exceptionally high coincided with El Nino event. In contrast, the SDII and RX1day tend to increase in Jun-Aug (JJA). This study has found that the yearly decreasing trend of CDD does not simply conclude that there is no contribution of CDD to drought events. Instead, the drought might be more related to high occurrence of CDD influenced by large scale events depending on season and topography. This research has provided basis knowledge about CDD associated with drought and should be beneficial to develop strategic plan for water availability and its impact on the forest fire mitigation management as well as reducing the hydrometeorological disasters which commonly occur over IKN and its surrounding areas.

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Section: Rainfall Distributioncontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Drought index analysis on the Nusantara Capital City of Indonesia (IKN)

Sapan,

Winarno,

Meliani

et al. 2024

Eighth Geoinformation Science Symposium 2023: Geoinformation Science for Sustainable Planet

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“…This can cause an increase in surface runoff and a decrease in groundwater recharge [49]. A significant decrease in vegetated land area is observed every year in the IKN area during last 20 years, followed by an increase in residential land and buildings (built-up area) and agricultural land [21]. This indicates deforestation and urbanization, which may cause a decrease in precipitation amount in the IKN.…”

Section: Resultsmentioning

confidence: 99%

“…Because rain in Kalimantan is influenced by atmospheric moisture content from the Pacific Ocean, the El Niño-Southern Oscillation (ENSO) also modulates extreme rain in Kalimantan [20]. In addition to climate change, deforestation and land-use change in Kalimantan have also contributed to the increase in extreme rainfall events [21]. The Madden-Julian Oscillation (MJO) can also significantly affect extreme rainfall events in Kalimantan.…”

Section: Introductionmentioning

confidence: 99%

Changes in Extreme Rainfall in New Capital of Indonesia (IKN) Based on 20 Years of GPM-IMERG Data

Marzuki,

Ramadhan,

Yusnaini

et al. 2023

Trends Sci

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The Indonesian government has decided to relocate the nation’s capital city from Jakarta on Java to the Nusantara Capital (IKN) on Kalimantan for political, socioeconomic, and infrastructure reasons, among others, including the threat of flood, earthquake, and land subsidence in Jakarta. However, IKN remains susceptible to hydro-meteorological disasters due to its equatorial location and high yearly rainfall amounts. In this article, we investigated changes in extreme rainfall in the IKN area over the last 20 years (2001- 2020) based on Integrated Multi-Satellite Retrievals for GPM (IMERG) version 6 data. Overall, extreme rain in the IKN area, especially in the Sepaku and Semboja sub-districts, has slightly declined in the last 2 decades, as shown by negative and positive Sen’s slopes of precipitation amount-based indices and the consecutive dry days (CDD), respectively. A decrease was also observed in RX1 day (annual maximum 1-day precipitation) and SDII (annual total rainfall divided by the number of wet days in the year) indices. This indicates that the IKN area is getting drier and could impact the availability of clean water in the future by increasing the intensity and duration of the drought. While the total amount of precipitation has decreased over the past 2 decades, there has been an increase in the intensity of more extreme precipitation events. This is evident from the rise in precipitation frequency-based indices (annual count of days with rainfall exceeding certain thresholds), such as R20mm and R50mm. The RX5day index (maximum 5-day precipitation) has also shown an increase. These changes increase the risk of flooding, so it is crucial to implement appropriate measures to mitigate the risk of floods in the IKN area. HIGHLIGHTS Extreme rain in the IKN area, especially in Sepaku and Semboja sub-districts, has slightly declined in the last 20 years. Increases were observed in the consecutive dry days (CDD) and some precipitation frequency-based indices. It is important to take appropriate measures to reduce the risk of floods and drought in the IKN areas. GRAPHICAL ABSTRACT

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“…This occurs due to an increase in the intensity of the greenhouse effect caused by the presence of gases in the atmosphere that absorb heat rays, especially infrared rays emitted by the earth. Global warming as a result of increasing concentrations of greenhouse gases, which trigger climate change, has become a global concern in recent decades (Safitri et al, 2022). This phenomenon has gained considerable attention due to the potential negative impacts of climate change on various economic sectors, which can threaten human life.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Education and Student Action: Understanding Student Contributions to Addressing Climate Change

Damanik,

Saliman

2023

jppipa, pendidikan ipa, fisika, biologi, kimia

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This study aimed to identify new factors in sustainable education that are able to motivate students for action related to climate change, and to evaluate the influence of the student movement for climate change on student actions. This research was conducted through a literature review research method. This research provides an explanation of existing findings and data. The results show that formal education in schools and social activities, such as interactions between students, can form a culture that supports sustainable collective action. An evaluation of the student movement in climate change mitigation, including activities such as recycling and waste collection, provides insight into its positive impact. This research contributes to designing educational approaches that motivate and evaluate student action on climate.

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Effects of Land Cover Change and Deforestation on Rainfall and Surface Temperature in New Capital City of Indonesia

Cited by 7 publications

References 11 publications

Drought index analysis on the Nusantara Capital City of Indonesia (IKN)

Drought index analysis on the Nusantara Capital City of Indonesia (IKN)

Changes in Extreme Rainfall in New Capital of Indonesia (IKN) Based on 20 Years of GPM-IMERG Data

Sustainable Education and Student Action: Understanding Student Contributions to Addressing Climate Change

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