Rainfall trend analysis using Mann-Kendall and Sen’s slope estimator test in West Kalimantan

Aditya, Fanni; Gusmayanti, Evi

doi:10.1088/1755-1315/893/1/012006

Cited by 46 publications

(30 citation statements)

References 26 publications

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“…The Mann-Kendall method requires no knowledge of the sequence distribution and can effectively reduce the impact of missing time series data and outliers on the research results. Therefore, this method is introduced to complete the Sen series distribution significance test [42][43][44].…”

Section: Sen-mann-kendall Methodsmentioning

confidence: 99%

Impacts of Climate Change and Land Use/Cover Change on the Net Primary Productivity of Vegetation in the Qinghai Lake Basin

Zhang

Yuan

Yang

et al. 2023

IJERPH

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The Qinghai Lake Basin acts as a natural barrier, preventing the western desert from spreading eastward. This is an important link in preserving the ecological stability of the northeastern region of the Qinghai–Tibet Plateau (QTP). Therefore, quantitative research into the net primary productivity (NPP) of vegetation and its driving force in the Qinghai Lake Basin is required. The effects of land use/cover change (LUCC) and climate change on NPP in the Qinghai Lake Basin were studied using R-contribution ratio and partial correlation analysis methods using MOD17A3H products, Land Use/Land Cover (LULC) data, and meteorological data. (1) The LULC of the Qinghai Lake Basin showed a trend that "the area of grassland, cultivated land, and unused land continued to decrease, while the area of other LULC types increased" from 2000 to 2020, according to the study's findings. Grassland, water bodies, construction land, and unused land dominated the mutual transformation of LULC types. (2) The NPP of the basin showed a growing trend, with a growth rate of 3.93 gC·m–2·a–1 before 2010 and 0.88 gC·m–2·a–1 after 2010. Significant regional heterogeneity was found in NPP, with gradients decreasing from southeast to northwest. (3) The impact of LUCC on overall NPP changes had gradually increased. Climate change has been the primary driver of NPP changes in the Qinghai Lake Basin over the last 20 years.

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Section: Sen-mann-kendall Methodsmentioning

confidence: 99%

Impacts of Climate Change and Land Use/Cover Change on the Net Primary Productivity of Vegetation in the Qinghai Lake Basin

Zhang

Yuan

Yang

et al. 2023

IJERPH

View full text Add to dashboard Cite

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“…To ensure that the median slope is statistically distinct from zero, the confidence interval of Q med for a certain probability would be computed. Nowadays, this indicator is widely used [65][66][67][68][69] due to its capacity for meteorological variable trend predictions and assessments.…”

Section: Sen's Slope Estimatormentioning

confidence: 99%

Assessment of Urbanization-Induced Land-Use Change and Its Impact on Temperature, Evaporation, and Humidity in Central Vietnam

Nguyen

Tran

Grodzka-Łukaszewska

et al. 2022

Water

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In the present day, the acceleration of urban surface heat impacts resulting from urbanization and industrialization is critical for citizens and municipal governments in developing-country cities. The previous key findings have indicated the association between urban surface heat and the following areas: forests, mixed agricultural land, built-up area, and water bodies. This study was motivated by a lack of knowledge regarding the variation of temperature, evaporation, and humidity in Central Vietnam’s major region. The non-parametric Mann–Kendall test, Sen’s slope estimator, and Landsat image analysis were employed to determine the trend and statistical significance of the variables across the 42-year study period for Da Nang city and Quang Nam province. Our results show that Da Nang city has a consistent trend with a high correlation between temperature, evaporation, and relative humidity, whereas Quang Nam province showed an inverse relationship between temperature and relative humidity since the beginning of the regional urbanization. The maximum, minimum, and mean temperatures have increased by at least 0.29 °C in Quang Nam province and 0.71 °C in Da Nang city since 2000. Between 1979 and 2021, the frequency of days with temperatures exceeding 35°C has increased by two and seven days during the past decade at the meteorological stations in Da Nang and Tam Ky, respectively. The temperature in Da Nang city varied from 31.80°C to 32.82°C with high temperatures concentrated in urbanized regions with less coverage of small trees, plants, and water bodies. Thus, the results of this study will serve as a scientific basis for decision-makers and regional officials for land-use management and to increase community awareness of sustainable planning, particularly in Da Nang city and Quang Nam province in Central Vietnam.

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“…Analisis magnitudo kecenderungan nilai IIE dilakukan menggunakan metode Sen's Slope [27]. Keunggulan Sen's Slope dibandingkan regresi linier yaitu pengujiannya tidak dipengaruhi oleh banyaknya pencilan (outlier) dan kesalahan data [28]. Dalam pengujian ini, kecenderungan diasumsikan linier dan mewakili perubahan waktu.…”

Section: Perhitungan Magnitudo Perubahan Nilai Indeks Iklim Ekstremunclassified

Analisis Kecenderungan Hujan Ekstrem Berbasis Indeks Iklim Ekstrem Periode Tahun 1990-2019 di Kalimantan Barat

2022

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Perubahan iklim dapat meningkatkan peluang kejadian cuaca/iklim ekstrem. Salah satu dampak cuaca/iklim ekstrem adalah bencana hidrometeorologi, termasuk banjir. Banjir merupakan bencana paling banyak terjadi di Kalimantan Barat periode tahun 1998-2019. Salah satu faktor pemicu terjadinya banjir ialah hujan ekstrem. Durasi, intensitas, maupun frekuensi hujan ekstrem dapat diidentifikasi menggunakan Indeks Iklim Ekstrem (IIE) parameter hujan. Informasi terkait kecenderungan hujan ekstrem diperlukan untuk mendukung pembangunan berbagai sektor, terutama mitigasi bencana hidrometeorologi. Oleh sebab itu tujuan penelitian ini menganalisis kecenderungan hujan ekstrem berdasarkan delapan jenis nilai IIE di Kalimantan Barat. Data yang digunakan adalah data curah hujan harian periode tahun 1990-2019 pada 14 lokasi di Kalimantan Barat. Data curah hujan harian digunakan untuk menghitung nilai IIE menggunakan perangkat lunak RClimDex. Analisis kecenderungan menggunakan metode Uji Mann-Kendall, dengan tingkat kepercayaan ditentukan sebesar 95%. Hasil menunjukkan telah terjadi kecenderungan nilai IIE secara signifikan pada empat lokasi penelitian. Nilai Consecutive Dry Day (CDD) mengalami kecenderungan menurun di Bengkayang mengindikasikan hari kering cenderung terakumulasi pada suatu waktu yang relatif lebih singkat. Kemudian di Sekayam, Kabupaten Sanggau nilai CDD meningkat, namun Consecutive Wet Day menurun mengindikasikan periode jeda hujan semakin meningkat, namun hujan menjadi lebih lebat. Nilai Max 5-day precipitation amount meningkat di Sungai Raya, Kabupaten Kubu Raya terkait dengan perubahan tutupan lahan yang terjadi secara drastis. Nilai Annual total wet days precipitation dan Number of days above 50 mm di Karangan, Kabupaten Landak meningkat bersesuaian dengan kejadian banjir yang juga meningkat.

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Rainfall trend analysis using Mann-Kendall and Sen’s slope estimator test in West Kalimantan

Cited by 46 publications

References 26 publications

Impacts of Climate Change and Land Use/Cover Change on the Net Primary Productivity of Vegetation in the Qinghai Lake Basin

Impacts of Climate Change and Land Use/Cover Change on the Net Primary Productivity of Vegetation in the Qinghai Lake Basin

Assessment of Urbanization-Induced Land-Use Change and Its Impact on Temperature, Evaporation, and Humidity in Central Vietnam

Analisis Kecenderungan Hujan Ekstrem Berbasis Indeks Iklim Ekstrem Periode Tahun 1990-2019 di Kalimantan Barat

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