Analisis Pengaruh Suhu Permukaan Laut Pesisir Provinsi Bali terhadap Curah Hujan di Pulau Bali dengan Data dari Stasiun Pengamat Cuaca

Agustin, Alifah Ike (2023) Analisis Pengaruh Suhu Permukaan Laut Pesisir Provinsi Bali terhadap Curah Hujan di Pulau Bali dengan Data dari Stasiun Pengamat Cuaca. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Curah hujan dipengaruhi oleh beberapa hal salah satunya suhu permukaan laut atau sering disebut dengan SPL. Provinsi Bali memiliki luas perairan pesisir yaitu ±9.150 km² di mana wilayah pesisir merupakan daerah peralihan antara ekosistem darat dan laut yang dipengaruhi oleh perubahan di darat dan laut sehingga berdampak pada perubahan iklim di daratan dan pesisir, termasuk suhu permukaan laut dan curah hujan. Sebelumnya telah dilakukan kajian terkait pengaruh suhu permukaan laut terhadap curah hujan di perairan Bali dan diperoleh hasil korelasi negatif atau berbalik arah. Dari kajian ini, diperoleh hipotesis awal bahwa pengaruh suhu permukaan laut terhadap curah hujan di daratan Bali akan bernilai positif. Penelitian ini bertujuan untuk mengetahui pengaruh suhu permukaan laut pesisir Provinsi Bali terhadap curah hujan di Pulau Bali dengan menggunakan data dari 4 titik pos hujan yang tersebar merata di Pulau Bali. Selain itu, penelitian ini juga bertujuan untuk membuktikan hipotesis awal yang digunakan. Dari penelitian yang telah dilakukan diperoleh hasil bahwa korelasi suhu permukaan laut pesisir Provinsi Bali terhadap curah hujan di Pulau Bali sebesar 0.748. Angka ini tergolong korelasi kuat yang menunjukkan hubungan positif atau searah yang membuktikan bahwa hipotesis awal ialah benar. Artinya semakin tinggi suhu permukaan laut pesisir Provinsi Bali, maka semakin tinggi pula curah hujan di Pulau Bali. Sementara itu pengaruh suhu permukaan laut pesisir Provinsi Bali terhadap curah hujan di Pulau Bali sebesar 55.9%. Sedangkan sisanya atau 44.1% dipengaruhi oleh faktor lainnya. Selain itu, juga diperoleh persebaran nilai suhu permukaan laut dan nilai curah hujan di Bali yang cenderung meningkat pada awal dan akhir tahun serta cenderung menurun pada pertengahan tahun. Hal ini berkaitan dengan angin muson yang mempengaruhi terjadinya 2 musim di Indonesia, yaitu musim penghujan yang terjadi pada bulan Oktober hingga Maret serta musim kemarau yang terjadi pada bulan April hingga September.
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Rainfall is influenced by several things, one of which is sea surface temperature or often referred to as SST. The Province of Bali has a coastal water area of ±9,150 km² where the coastal area is a transitional area between land and sea ecosystems that are affected by changes in land and sea that have an impact on climate change on land and coasts, including sea surface temperature and rainfall. Previously, a study was carried out regarding the effect of sea surface temperature on rainfall in Bali waters and obtained negative correlation results or reversed direction. From this study, the initial hypothesis was obtained that the effect of sea surface temperature on rainfall in mainland Bali would be positive. This study aims to determine the effect of coastal sea surface temperature in Bali Province on rainfall on Bali Island by using data from 4 rain posts that are evenly distributed on Bali Island. In addition, this study also aims to prove the initial hypothesis used. From the research that has been done, the results show that the correlation of coastal sea surface temperature in Bali Province to rainfall on Bali Island is 0.748. This figure is classified as a strong correlation which indicates a positive or unidirectional relationship which proves that the initial hypothesis is true. This means that the higher the sea surface temperature of the coast of Bali Province, the higher the rainfall on the island of Bali. Meanwhile, the effect of the coastal sea surface temperature of the Province of Bali on rainfall on the island of Bali is 55.9%. While the rest or 44.1% is influenced by other factors. In addition, the distribution of sea surface temperature values and rainfall values in Bali is also obtained which tends to increase at the beginning and end of the year and tends to decrease in the middle of the year. This is related to the monsoon winds which affect the occurrence of 2 seasons in Indonesia, namely the rainy season which occurs from October to March and the dry season which occurs from April to September.

Item Type:	Thesis (Masters)
Additional Information:	RSG 551.577 Agu a-1 2023
Uncontrolled Keywords:	Bali, Curah Hujan, Himawari-8, SPL, Rainfall, Himawari-8, Sea Surface Temperature
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G70.217 Geospatial data G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis
Depositing User:	Alifah Ike Agustin
Date Deposited:	30 Jul 2023 01:46
Last Modified:	15 Dec 2023 06:53
URI:	http://repository.its.ac.id/id/eprint/99979

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