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Journal articles on the topic 'ENSO [El Nino-Southern Oscillation]'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 March 2023

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1

Aprilia, Bunga, Marzuki Marzuki, and Imam Taufiq. "Prediksi El Nino Southern Oscillation (ENSO) Menggunakan Jaringan Saraf Tiruan (JST)-Backpropagation." Jurnal Fisika Unand 9, no. 4 (2021): 421–27. http://dx.doi.org/10.25077/jfu.9.4.421-427.2020.

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Penelitian ini bertujuan untuk memprediksi nilai indeks ENSO yaitu Sea Surface Temperature (Nino 1.2, Nino 3, Nino 3.4 dan Nino 4), Southern Oscillation Index (SOI) dan Multivariate ENSO Index versi 2 (MEI.v2) yang diambil dari tahun 1979-2018. Prediksi dilakukan dengan menggunakan metode JST-backpropagation dengan memvariasikan learning rate dan momentum. Semua indeks menghasilkan nilai akurasi prediksi ENSO yang tinggi, namun indeks Nino 4 merupakan indeks yang memiliki akurasi tertinggi karena nilai Mean Square Error (MSE) pelatihan dan pengujiannya yang relatif lebih kecil dibandingkan den

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2

Lou, Ying Jun, Li Na Lu, and Li Jie Zhu. "The Effect of ENSO on Wheat Futures Based on EMD and GARCH Model." Applied Mechanics and Materials 40-41 (November 2010): 866–72. http://dx.doi.org/10.4028/www.scientific.net/amm.40-41.866.

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At present, most of the studies on the relationship between El Nino Southern Oscillation and agricultural futures focus on perceptual analyses and directly data analysis, and these discussions are usually limited to futures price. This article uses EMD algorithm to decompose Wheat futures prices and denoised ENSO index, and finally gets the negative relationship between El Nino Southern Oscillation and wheat Futures prices. Then, this article conducts the comparative analysis of operation performance based on El Niño Southern Oscillation, finding that this mode of operation can greatly increas

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3

Muza, Olivia. "El Nino-Southern Oscillation Influences on Food Security." Journal of Sustainable Development 10, no. 5 (2017): 268. http://dx.doi.org/10.5539/jsd.v10n5p268.

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El-Nino Southern Oscillation (ENSO) is the most recurrent change in climate impacting agriculture productivity and food security. This study investigates ENSO impacts on four cereal crops (maize, millet, sorghum and wheat) using crop production and climate datasets spanning the years 1960-2015. The results of this study reveal that during El Nino (La Nina) maize, sorghum and wheat production decreases (increases) while that of millet increases (decreases). Even though, the correlation is statistically significant for maize only, the outcome is a call to review the macro-food policy taking into

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Hashidu, U. S., and S. I. Badaru. "Relationship between El-Niño southern oscillation and rainfall in Sudano-Sahelian Region of Northern Nigeria." JOURNAL OF AGRICULTURAL ECONOMICS, ENVIRONMENT AND SOCIAL SCIENCES 7, no. 2 (2021): 211–16. http://dx.doi.org/10.56160/jaeess202172019.

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El Nino Southern-Oscillation (ENSO) refers to the cycle of coherent and sometimes very strong variations in the sea surface temperature (SST), convective rainfall, surface pressure and atmospheric circulation across the equatorial Pacific Ocean. The research investigated the relationship between ENSO and rainfall across the Sudano-Sahelian region of northern Nigeria. Rainfall data for seven (7) locations were sourced from the Nigerian Meteorological Agency (NIMET) covering the period from 1950 to 2019 and El-Nino Southern Oscillation (ENSO) data which comprised of Southern Oscillation Index (S

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5

Muhammad, Fadhlil Rizki, Yudha Kristanto, and Imam Wahyu Amanullah. "Karakteristik Madden-Julian Oscillation (MJO) Ketika El-Nino Southern Oscillation (ENSO)." Wahana Fisika 2, no. 2 (2017): 76. http://dx.doi.org/10.17509/wafi.v2i2.9376.

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Perkembangan peristiwa El-Nino Southern Oscillation (ENSO) menunjukkan peran penting bagi Madden-Julian Oscillation (MJO). Variasi angin permukaan (UWND) dan konveksi (OLR) intramusiman yang merupakan komponen dari variabilitas MJO sangat berinteraksi dengan komponen ENSO dalam skala waktu dan ruang. Penelitian ini menggunakan Diagram Hovmueller untuk melihat perambatan konveksi, analisis spektral untuk melihat frekuensi MJO, analisis spektral bilangan gelombang-frekuensi untuk melihat perambatan dan bilangan gelombang zonal, serta analisis spektral silang untuk melihat koherensi serta fase da

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6

Koem, S., R. J. Lahay, and S. K. Nasib. "The sensitivity of meteorological drought index towards El Nino-Southern Oscillation." IOP Conference Series: Earth and Environmental Science 1089, no. 1 (2022): 012005. http://dx.doi.org/10.1088/1755-1315/1089/1/012005.

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Abstract El Nino-Southern Oscillation (ENSO) contributes to the regional climates, such as precipitation and droughts. The objectives of the present work were to: (1) identify the severity index; (2) analyze the correlation of SPI and RDI, and; (3) identify the response of SPI and RDI towards ENSO. SPI and RDI were calculated for time scales (3, 6, and 12 months), and these represented the seasonal and annual drought. The identification of the responses of the drought severity index, based on ENSO, consisted of several thresholds, namely weak, moderate, and strong. The correlational value and

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7

Dewi, Sri Mai, and Marzuki Marzuki. "Analisis Pengaruh Pergeseran Lokasi ENSO terhadap Curah Hujan di Indonesia." Jurnal Fisika Unand 9, no. 2 (2020): 176–82. http://dx.doi.org/10.25077/jfu.9.2.176-182.2020.

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ENSO (El Nino Southern Oscillation) merupakan gejala penyimpangan suhu permukaan laut di Samudera Pasifik bagian timur dari kondisi normal. Penelitian ini menganalisis dampak dari perbedaan posisi pusat ENSO terhadap curah hujan di Indonesia. Posisi pusat ENSO ditentukan berdasarkan indeks terbesar dari empat indeks Nino selama tahun 1982-2016. Posisi pusat ENSO didefinisikan jauh, menengah dan dekat dari Indonesia ketika indek Nino yang terbesar berturut-turut adalah Nino 1+2, Nino 3 dan Nino 3,4, serta Nino 4. Intensitas curah hujan di setiap posisi ENSO diamati menggunakan data Global Preci

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8

Hidayat, Anistia Malinda, Usman Efendi, Lisa Agustina, and Paulus Agus Winarso. "KORELASI INDEKS NINO 3.4 DAN SOUTHERN OSCILLATION INDEX (SOI) DENGAN VARIASI CURAH HUJAN DI SEMARANG." Jurnal Sains & Teknologi Modifikasi Cuaca 19, no. 2 (2018): 75. http://dx.doi.org/10.29122/jstmc.v19i2.3143.

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Semarang merupakan salah satu wilayah di Indonesia yang rawan terdampak bencana hidrometeorologi. Sejumlah wilayah di Semarang merupakan daerah rawan kekeringan, sementara di wilayah lainnya merupakan daerah langganan banjir tiap tahunnya. Salah satu parameter yang memiliki keterkaitan erat dengan fenomena hidrometeorologi adalah El Nino Southern Oscillation (ENSO). Sebagai sirkulasi tropis non musiman, ENSO memiliki peran penting terhadap variasi curah hujan yang diamati. Penelitian terkait ENSO telah banyak dilakukan sebelumnya, namun belum ada penelitian tekait yang dilakukan di Semarang ya

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9

Voskresenskaya, E. N., and V. N. Maslova. "Winter-spring cyclonic variability in the Mediterranean-Black Sea region associated with global processes in the ocean-atmosphere system." Advances in Science and Research 6, no. 1 (2011): 237–43. http://dx.doi.org/10.5194/asr-6-237-2011.

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Abstract. Using global NCEP/NCAR reanalysis data set on 1000 hPa geopotential height (1948–2006), cyclones in the Mediterranean and Black Sea regions were detected and their main characteristics (frequency, depth, integrated area) were calculated. Analysis of their interannual-multidecadal variability in January-March associated with global processes in the ocean-atmosphere system was done. It was shown that North Atlantic Oscillation (NAO) manifests in the Black Sea region mainly in the variability of frequency of cyclones while in the Mediterranean – in the interannual anomalies of cyclones'

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10

Yasunari, Tetsuzo. "Global Structure of the El Nino/Southern Oscillation." Journal of the Meteorological Society of Japan. Ser. II 65, no. 1 (1987): 67–80. http://dx.doi.org/10.2151/jmsj1965.65.1_67.

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Yasunari, Tetsuzo. "Global Structure of the El Nino/Southern Oscillation." Journal of the Meteorological Society of Japan. Ser. II 65, no. 1 (1987): 81–102. http://dx.doi.org/10.2151/jmsj1965.65.1_81.

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12

Hsieh, WW, and BV Hamon. "The El Nino-Southern Oscillation in south-eastern Australian waters." Marine and Freshwater Research 42, no. 3 (1991): 263. http://dx.doi.org/10.1071/mf9910263.

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Using four decades of hydrographic data collected off the coast near Sydney, New South Wales, and sea-level data at Sydney, we studied the interannual variability in south-eastern Australian shelf waters. The first two empirical orthogonal function (EOF) modes of the band-pass-filtered 50-m-depth hydrographic data (temperature, T; salinity, S; nitrate, N; inorganic phosphate, P; and oxygen, O) and the sea level (SL) and adjusted sea level (ASL) data accounted respectively for 51 and 27% of the total variance. Both modes were significantly correlated with the Southern Oscillation Index (SOI). T

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13

KANE, R. P. "Trends, periodicities and ENSO relationships of the annual precipitation over the contiguous United States and Southern Canada." MAUSAM 52, no. 4 (2022): 659–68. http://dx.doi.org/10.54302/mausam.v52i4.1738.

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The century-long (1891-1990) time series of Groisman and Easterling (1994a,b) representing estimates of annual precipitation amounts over five homogeneous regions of the United States and Southern Canada (south of 55° N) were examined for trends, periodicities and ENSO relationships. The trends were not uniformly up or down during the 100-year interval, for any region. From 1891 to about 1930, the trends were downward or negligible. Thereafter, the trends were mostly upward, with cyclic variations superposed. A spectral analysis revealed significant periodicities in the QBO and QTO regions (2-

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AHMED, A. S. M. SABBIR, A. A. MUNIM, Q. N. BEGUM, and A. M. Choudhury. "EI-Nino southern oscillation and rainfall varIation over Bangladesh." MAUSAM 47, no. 2 (2021): 157–62. http://dx.doi.org/10.54302/mausam.v47i2.3713.

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In the present study, an attempt has been made to examine the variations of rainfall over Bangladesh and to find possible correlation with EI-Nino/Southern Oscillation (ENSO). Four stations have been chosen from four different climatic regions of Bangladesh for this purpose, namely Jessore, Dhaka. Barisal and Srimangal. The regions have been classified according to annual rainfall amounts. The rainfall data for forty three years, (1950-1992) have been analysed. The yearly mean rainfall shows a distinct negative decreasing tendency with the occurrence of ENSO.The seasonal rainfall analysis show

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15

Hall, J. W., and H. A. Quamme. "Winter freezes of fruit trees in the Okanagan Valley, British Columbia: Relationship with the Pacific North America teleconnection and the El Nino/Southern Oscillation." Canadian Journal of Plant Science 74, no. 4 (1994): 841–46. http://dx.doi.org/10.4141/cjps94-152.

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Every 5–7 years there are severe winter freezes in the Okanagan Valley which lower yields or kill apple trees. Our goal was to determine whether winter freezes (December, January and February) could be related to the Pacific North America teleconnection (PNA) and the El Nino/Southern Oscillation (ENSO). Fall and spring freezes were also discussed. A list of ENSO warm event, cold event and neutral years was available from 1947 to 1986 as well as monthly temperature and precipitation records. Months were classified as having a PNA, reverse PNA (r-PNA) or neutral pattern. There was a tendency for

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16

Pasha, Wanda Avia, Amron Amron, and Widodo Setiyo Pranowo. "Pengaruh Enso (El Nino Southern Oscillation) Terhadap Suhu Dan Salinitas di Perairan Utara Aceh." Jurnal Hidropilar 8, no. 2 (2022): 61–72. http://dx.doi.org/10.37875/hidropilar.v8i2.247.

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Suhu dan salinitas merupakan faktor oseanografi yang berperan dalam proses fisika maupun biologi diperairan. Massa air dapat diketahui dengan menganalisis distribusi suhu dan salinitas. Variabilitas iklim di Indonesia salah satunya di pengaruhi oleh ENSO. Tujuan dari penelitian ini untuk mengetahui kondisi umum perairan utara Aceh, mengetahui variabilitas suhu dan salinitas saat fenomena ENSO terjadi dan korelasi antara suhu dan salinitas terhadap SOI. Data yang digunakan adalah suhu dan salinitas pada tahun 2011, 2012 dan 2015 dari website HYCOM. Metode yang digunakan adalah asimilasi hasil m

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17

Cahyaningtyas, Inaya, Arini Wahyu Utami, and Lestari Rahayu Waluyuti. "Indonesia’s Natural Rubber Productivity and Technically Specified Natural Rubber 20 Export: The Effect of El Nino Southern Oscillation." AGRARIS: Journal of Agribusiness and Rural Development Research 8, no. 2 (2022): 215–30. http://dx.doi.org/10.18196/agraris.v8i2.14320.

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El Nino Southern Oscillation (ENSO) causes rainfall anomalies, which may disrupt Indonesia’s natural rubber production by interfering with the trees’ growth and affecting the export volume. This study analyzed the effect of ENSO dynamics on the monthly productivity of natural rubber and Technically Specified Natural Rubber (TSNR) 20 export. Monthly data from January 2006 to December 2019 were collected from the Statistics Indonesia, International Trade Centre (ITC), World Bank, Bank Indonesia, and National Ocean and Atmospheric Administration (NOAA). Descriptive statistics unveiled that strong

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Athirah Suhailah Jalil and Yan-Ling Tan. "Impacts of El Nino and La Nina on Palm Oil Production: Evidence from Selected Palm Oil Producing Countries." Insight Journal 8 (April 7, 2021): 108–19. http://dx.doi.org/10.24191/ij.v8i0.107.

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Palm oil is one of the most important edible oils commercialized in world oils and fats market. However, agriculture is highly vulnerable to climate change. For instance, El Nino is the warm phase of El Nino Southern Oscillation (ENSO) while La Nina is the opposite of El Nino, the cold phase of ENSO. Strong El Nino and La Nina events cause global changes especially in temperature and rainfall, subsequently affect agricultural areas and causing considerable economic losses. Therefore, the objective of this study is to explore the impacts of El Nino and La Nina on palm oil production in selected

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Sukresno, Bambang, Denarika Jatisworo, and Denny Wijaya Kusuma. "ANALISIS MULTILAYER VARIABILITAS UPWELLING DI PERAIRAN SELATAN JAWA." Jurnal Kelautan Nasional 13, no. 1 (2018): 15. http://dx.doi.org/10.15578/jkn.v1i1.6619.

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Variabilitas upwelling di perairan selatan Jawa telah diidentifikasi. Analisis multilayer dilakukan dengan menggunakan data ARGO Float. Variabilitas suhu permukaan laut (SPL) dan klorofil-a (klor-a) dianalisis dengan menggunakan data satelit MODIS Aqua. Pengaruh El Nino Southern Oscillation (ENSO) terhadap upwelling dilakukan dengan menggunakan indeks Oceanic Nino Index (ONI), sedangkan pengaruh Indian Ocean Dipole (IOD) direpresentasikan dengan menggunakan indeks Dipole Mode Index (DMI). Dari hasil penelitian diketahui bahwa ENSO mempengaruhi intensitas upwelling. Pada periode el nino intensi

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Saputra, Candra, I. Wayan Arthana, and I. Gede Hendrawan. "THE VULNERABILITY STUDY OF LEMURU (SARDINELLA LEMURU) FISH RESOURCES SUSTAINABILITY IN BALI STRAIT IN CORELLATION WITH ENSO AND IOD." ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) 11, no. 2 (2017): 140. http://dx.doi.org/10.24843/ejes.2017.v11.i02.p02.

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The aim of this research is to know the relationship between lemuru fish catch to Sea Surface Temperature (SST), El-Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD) phenomenon in Bali Strait. The results showed, that in the period 2007 – 2016. fluctuations of catches lemuru tends to decline. Sea Surface Temperature (SST) distribution with the lowest temperature 25,28oC at 24,53oC - 27,16oC and the highest temperature is 29,31oC in the range of 28,730C – 30,490C. The lowest temperature occurred in July - September while the highest temperature occurred in January - April. Based on

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Solofa, Dean, and Than Aung. "Samoa's 102 year meteorological record and a preliminary study on agricultural product and ENSO variability." South Pacific Journal of Natural and Applied Sciences 22, no. 1 (2004): 46. http://dx.doi.org/10.1071/sp04009.

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This paper seeks to find a relationship between the El Nino/Southern Oscillation (ENSO) variability and crop production. Precipitation and mean temperature were examined first to establish an ENSO relationship while primary sector macroeconomic and crops data were analyzed to note any significant variations in output linked to ENSO impacts of significant occurrence. Institutional strengthening and improved access to markets, both local and regional, and sector development programmes however have made this assessment difficult. Subsistence agriculture (and fisheries), said to the backbone and e

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Atmadipoera, Agus S., Agitha Saverti Jasmine, Mulia Purba, and Anastasia R. T. D. Kuswardani. "UPWELLING CHARACTERISTICS IN THE SOUTHERN JAVA WATERS DURING STRONG LA NINA 2010 AND SUPER EL NINO 2015." Jurnal Ilmu dan Teknologi Kelautan Tropis 12, no. 1 (2020): 257–76. http://dx.doi.org/10.29244/jitkt.v12i1.28977.

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Seasonal coastal upwelling in the Southern Java waters is considered to be modulated by interannual ocean-atmosphere variability of El Nino Southern Oscillation (ENSO). This study aims to investigate a contrast in seasonal upwelling characteristics during the La Nina 2010 and El Nino 2015 events, by using multi-datasets from INDESO model output and satellite-derived datasets. Distinct characteristics of seasonal upwelling was clearly seen. In La Nina, surface ocean-atmosphere variables were much lower than that observed in El Nino, except for precipitation rate, sea surface temperature, and se

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Chandrasekara, Sewwandhi, Venkatraman Prasanna, and Hyun-Han Kwon. "Monitoring Water Resources over the Kotmale Reservoir in Sri Lanka Using ENSO Phases." Advances in Meteorology 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/4025964.

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In this study, the El Nino Southern Oscillation (ENSO) phase index is used for water management over the Kotmale reservoir in Sri Lanka. Daily rainfall data of 9 stations over the Kotmale catchment during 1960–2005 June-September (JJAS) season is investigated over the Kotmale catchment. The ENSO phases are identified based on the 0.5°C sea surface temperature (SST) anomaly over Nino 3 region. The study has brought out few stations showing increasing and a few decreasing seasonal rainfall trends for JJAS season, while there is no change in the annual rainfall for the catchment. Monthly and seas

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Tsonis, A. A., K. L. Swanson, G. Sugihara, and P. A. Tsonis. "Climate change and the demise of Minoan civilization." Climate of the Past 6, no. 4 (2010): 525–30. http://dx.doi.org/10.5194/cp-6-525-2010.

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Abstract. Climate change has been implicated in the success and downfall of several ancient civilizations. Here we present a synthesis of historical, climatic, and geological evidence that supports the hypothesis that climate change may have been responsible for the slow demise of Minoan civilization. Using proxy ENSO and precipitation reconstruction data in the period 1650–1980 we present empirical and quantitative evidence that El Nino causes drier conditions in the area of Crete. This result is supported by modern data analysis as well as by model simulations. Though not very strong, the EN

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Tobin, Kenneth J., Sugam Pokharel, and Marvin E. Bennett. "Coccidioidomycosis (Valley Fever), Soil Moisture, and El Nino Southern Oscillation in California and Arizona." International Journal of Environmental Research and Public Health 19, no. 12 (2022): 7262. http://dx.doi.org/10.3390/ijerph19127262.

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The soil-borne fungal disease coccidioidomycosis (Valley fever) is prevalent across the southwestern United States (US). Previous studies have suggested that the occurrence of this infection is associated with anomalously wet or dry soil moisture states described by the “grow and blow” hypothesis. The growth of coccidioidomycosis is favored by moist conditions both at the surface and in the root zone. A statistical analysis identified two areas in Arizona and central California, with a moderate-to-high number of coccidioidomycosis cases. A Wavelet Transform Coherence (WTC) analysis between El

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Puspasari, R., P. F. Rahmawati, and E. Prianto. "The Effect of ENSO (El Nino Southern Oscillation) phenomenon on Fishing Season of Small Pelagic Fishes in Indonesia Waters." IOP Conference Series: Earth and Environmental Science 934, no. 1 (2021): 012018. http://dx.doi.org/10.1088/1755-1315/934/1/012018.

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Abstract The El Nino Southern Oscillation (ENSO) phenomenon causes changes in environmental conditions such as water temperature, salinity, and rainfall. In fisheries sector, the changing environment has affected the fishing seasons and Catch per Unit Effort (CPUE) of some pelagic species. This research was conducted by calculating CPUE and fishing season index for several small pelagic fishes in Makassar Strait, Bali Strait, and Aceh waters, then comparing the index value with the fishing season pattern in two extreme periods that are 2010-2011 and 2016 - 2017. An ANOVA test was conducted to

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Shaman, J., and M. Lipsitch. "The El Nino-Southern Oscillation (ENSO)-pandemic Influenza connection: Coincident or causal?" Proceedings of the National Academy of Sciences 110, Supplement_1 (2012): 3689–91. http://dx.doi.org/10.1073/pnas.1107485109.

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Hafez, Yehia, and Abdulhaleem Labban. "A Recent Study of the Relationship between the Precipitation Rate over Saudi Arabia in the Fall and Climatic Indices." Advances in Meteorology 2020 (July 20, 2020): 1–11. http://dx.doi.org/10.1155/2020/8953967.

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This paper presents a recent study of the relationship between precipitation rate (PR) over Saudi Arabia (SA) within the months of the fall season and climatic indices. The fall monthly PR data spanning the study period between 1948 and 2018 is considered. In addition, the monthly climatic index records (arctic oscillation (AO), global surface air temperature (GSAT), multivariate ENSO index (MEI), North Atlantic Oscillation (NAO) index, Nino 3.4 index, and Southern Oscillation Index (SOI)) for the fall months were also considered. The statistical trend, anomaly, and correlation analyses are ap

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SINGH, O. P., TARIQ MASOOD ALI KHAN, and MD SAZEDUR RAHMAN. "Tropical cyclone frequency in the north Indian Ocean in relation to southern oscillation phenomenon." MAUSAM 52, no. 3 (2022): 511–14. http://dx.doi.org/10.54302/mausam.v52i3.1720.

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The present paper deals with the influence of Southern Oscillation (SO) on the frequency of tropical cyclones in the north Indian Ocean. The results show that during the negative phase of SO the frequency of tropical cyclones and depressions over the Bay of Bengal and the Arabian Sea diminishes in May which is most important pre-monsoon cyclone month. The correlation coefficient between the frequency of cyclones and depressions and the Southern Oscillation Index (SOI) is +0.3 which is significant at 99% level. Post-monsoon cyclone frequency in the Bay of Bengal during November shows a signific

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Hsiang, Solomon M., and Kyle C. Meng. "Tropical Economics." American Economic Review 105, no. 5 (2015): 257–61. http://dx.doi.org/10.1257/aer.p20151030.

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Why wealth is systematically lower in the tropics remains a puzzle. We point out that latitude may have fundamental economic consequence because it plays a key role in how countries experience geophysical processes that have economic implications. We demonstrate that annual fluctuations in the El Nino Southern Oscillation (ENSO) leads to hotter and dryer local weather across tropical countries and subsequently to substantial losses in agricultural yields, output, and value-added. If volatility in agricultural production impedes economic growth, the relatively stronger influence of ENSO on the

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Bimaprawira, Adikusuma, and Hasti Amrih Rejeki. "KETERKAITAN PERIODISITAS CURAH HUJAN DI DAERAH PESISIR DAN PEGUNUNGAN PROVINSI JAWA TIMUR DENGAN VARIABILITAS CUACA SKALA GLOBAL DAN REGIONAL." Jurnal Sains & Teknologi Modifikasi Cuaca 22, no. 2 (2021): 51–59. http://dx.doi.org/10.29122/jstmc.v22i2.4422.

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Intisari Jawa Timur merupakan wilayah yang memiliki variasi curah hujan yang dipengaruhi oleh fenomena cuaca global dan regional seperti Dipole Mode, El Nino Southern Oscillation (ENSO), Intertropical Convergence Zone, Madden Julian Oscillation, dan monsun. Topografi yang beragam juga menjadi faktor yang memengaruhi curah hujan di daerah Jawa Timur. Berbagai indeks digunakan untuk melihat aktivitas-aktivitas fenomena cuaca tersebut, seperti DMI untuk aktivitas Dipole Mode, NINO 3.4 untuk aktivitas ENSO, Indeks RMM untuk aktivitas MJO, WNPMI dan, AUSMI untuk aktivitas monsun. Pada penelitian in

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JHA, T. N., and R. D. RAM. "Study of rainfall departure over catchments of Bihar plains." MAUSAM 61, no. 2 (2021): 187–96. http://dx.doi.org/10.54302/mausam.v61i2.800.

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Station wise daily rainfall data of sixty years is used to study rainfall departure and variability in Kosi, Kamala/Bagmati/Adhwara and Gandak/Burhi Gandak catchments during monsoon season. Station and catchment wise rainfall time series have been made to compute rainfall departure and Coefficient of Variation (CV). Southern Oscillation Index (SOI), Multivariate ENSO Index (MEI) and ENSO strength based on percentile analysis are used to ascertain their impact on rainfall distribution in the category as excess, normal, deficient and scanty. Results indicate that the variability is greater over

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Anjas Swara, I. Gede Mita, I. Wayan Gede Astawa Karang, and Gede Surya Indrawan. "Analisis Pola Sebaran Area Upwelling di Selatan Indonesia Menggunakan Citra Modis Level 2." Journal of Marine Research and Technology 4, no. 1 (2021): 56. http://dx.doi.org/10.24843/jmrt.2021.v04.i01.p09.

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This research aimed to find out the pattern of spasio-temporal upwelling and its relation with El Nino Southern Oscillation (ENSO) in the southern waters of Java to the East Nusa Tenggara. Two indicators namely sea surface temperature (SST) and chlorofil-a data obtained from oceancolor database were used as an indicator of upwelling occurences. The overlay technique and correlation analyses were used to describe the relationship between upwelling and ENSO. The results showed the phenomenon of upwelling occurred along southern Java and East Nusa Tenggara. The appearance of upwelling occurred in

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Yang, Xiaoxia, Juan Wu, Jia Liu, and Xuchun Ye. "Changes of Extreme Precipitation and Possible Influence of ENSO Events in a Humid Basin in China." Atmosphere 12, no. 11 (2021): 1522. http://dx.doi.org/10.3390/atmos12111522.

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In this study, 11 extreme precipitation indices were selected to examine the spatiotemporal variation of extreme precipitation in the Poyang Lake Basin during 1960–2017. The responses of extreme precipitation indices to El Nino/Southern Oscillation (ENSO) events of different Pacific Ocean areas were further investigated. The results show that the temperature in the Poyang Lake Basin has increased significantly since the 1990s, and the inter-decadal precipitation fluctuated. Most extreme precipitation indices showed an increasing trend with abrupt changes occurring around 1991. Spatially, most

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Mello, C. R., L. D. Norton, N. Curi, S. N. M. Yanagi, and A. M. Silva. "El-Niño southern oscillation and rainfall erosivity in the headwater region of the Grande River Basin, Southeast Brazil." Hydrology and Earth System Sciences Discussions 8, no. 6 (2011): 10707–38. http://dx.doi.org/10.5194/hessd-8-10707-2011.

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Abstract. Relationships between regional climate and oceanic and atmospheric anomalies are important tools in order to promote the development of models for predicting rainfall erosivity, especially in regions with substantial intra-annual variability in the rainfall regime. In this context, this work aimed to analyze the rainfall erosivity in headwaters of Grande River Basin, Southern Minas Gerais State, Brazil. This study considered the two most representative environments, the Mantiqueira Range (MR) and Plateau of Southern Minas Gerais (PSM). These areas are affected by the El Nino Southern

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Nadolnyak, Denis, Valentina Hartarska, and Xuan Shen. "Climate Variability and Agricultural Loan Delinquency in the US." International Journal of Economics and Finance 8, no. 12 (2016): 238. http://dx.doi.org/10.5539/ijef.v8n12p238.

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<p>Inter-annual climate variability in the Southeastern US that affects farm productivity and cash flows is largely dependent on the predictable El Nino Southern Oscillation (ENSO) phenomenon. In this paper, we estimate the association between the ENSO anomalies and the performance of agricultural loan portfolios of the Farm Credit System (FCS) institutions - the largest agricultural lender in this region. We find that, compared to neutral years, the share of delinquent loans in the FCS portfolio decreases by 1.5 to 2 percentage points following La Nina years and increases by 1.5 to 2 pe

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Putra, Andry Purnama, Agus S. Atmadipoera, and John I. Pariwono. "RESPONS SUHU PERMUKAAN LAUT DAN KLOROFIL-A TERHADAP KEJADIAN ENSO DAN IODM DI WILAYAH INDO-PASIFIK TROPIS." Jurnal Ilmu dan Teknologi Kelautan Tropis 12, no. 1 (2020): 167–82. http://dx.doi.org/10.29244/jitkt.v12i1.30693.

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Fenomena anomali laut-atmosfer antar-tahunan dari El Nino Southern Oscillation (ENSO) dan Indian Ocean Dipole Mode (IODM) di wilayah Indo-Pasifik Tropis memberikan dampak pada ekosistem laut, hidrologi dan variabilitas iklim. Penelitian ini bertujuan untuk menganalisis pola spasial dan variabilitas temporal suhu permukaan laut (SPL) dan klorofil-a permukaan (Chl-a) terkait dengan ENSO dan IODM di Indo-Pasifik Tropis. Data deret waktu bulanan dari tahun 1980-2017 (37 tahun) diperoleh dari pusat data global, dan dianalisis menggunakan metode empirical orthogonal function (EOF). Hasil penelitian

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Brenner, J. "Southern Oscillation Anomalies and Their Relationship to Wildfire Activity in Florida." International Journal of Wildland Fire 1, no. 1 (1991): 73. http://dx.doi.org/10.1071/wf9910073.

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Some relationships between the EI Nino / Southern Oscillation (ENSO) and wildfire in Florida are examined. Unlike many ENSO / wildfire studies to date, no particular emphasis was placed on the positive side of the ENSO. Both the positive and negative sides were equally examined. Linear correlation coefficients, scatter diagrams and line graphs are constructed to compare acres burned with indices of central and eastern Pacific sea surface temperature and pressure anomalies. The study reveals a significant relationship between anomalous sea surface temperatures and sea level pressures in the ten

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Hasudungan, P., I. Irham, and A. W. Utami. "The impact of el niño southern oscillation and covid-19 on the rice price dynamics in Indonesia: the vector error correction model approach." IOP Conference Series: Earth and Environmental Science 883, no. 1 (2021): 012061. http://dx.doi.org/10.1088/1755-1315/883/1/012061.

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Abstract Half of the world's population makes rice a crop of focus because it has many opportunities in the future. However, there are disruptors for rice development in 2020, which are climate variability and COVID-19 Pandemics. El Nino-Southern Oscillation (ENSO) is a climate variability that can threaten the rice price dynamics. Besides that, COVID-19 also has implications for rice price dynamics. The objectives of this paper are: (1) to empirically study the impact of the El Nino-Southern Oscillation on rice price dynamics and (2) to analyze the effect of COVID-19 pandemics on rice price i

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Rejeki, Hasti Amrih, B. Betsi, and Yogi Muhammad Andariwan. "VARIATIONS OF INDONESIAN TRHOUGHFLOW TRANSPORT IN MALUKU AND HALMAHERA SEA RELATED TO THE OCCURRENCE OF EL NINO SOUTHERN OSCILLATION." Jurnal Kelautan: Indonesian Journal of Marine Science and Technology 14, no. 3 (2022): 243–53. http://dx.doi.org/10.21107/jk.v14i3.12083.

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ABSTRACTMaluku and Halmahera Sea are the entry paths for the Indonesian Throughflow (ITF). This study examined the variation of their current speed, current direction, and transport during the ENSO phases on La Nina in 2010-2011 and El Nino in 2015-2016. The data used were the Marine Copernicus reanalysis data of u and v components of current velocity at 155 m and 266 m of depth. The data were processed by using GrADS to see the direction and speed of the current as well as by calculating the ITF transport. During La Nina, both at 155 m and 266 m of depths were found the eddy patterns. When El

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Kemarau, Ricky Anak, and Oliver Valentine Eboy. "The Impact of El Niño–Southern Oscillation (ENSO) on Temperature: A Case Study in Kuching, Sarawak." Malaysian Journal of Social Sciences and Humanities (MJSSH) 6, no. 1 (2021): 289–97. http://dx.doi.org/10.47405/mjssh.v6i1.602.

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The El Niño–Southern Oscillation (ENSO) event is a climate event that has an impact on the world climate. The effects of ENSO are often associated with prolonged droughts and floods since 1980 following global climate change. In addition to causing flooding and drought. Indirectly, the occurrence of ENSO causes health problems, environmental destruction, affecting economic activities such as agriculture and fisheries. Many studies on ENSO have been conducted. However, there is still a lack of research on the effect of ENSO on temperature in local knowledge areas, especially urban areas because

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VALE, Roseilson Souza do, Ana Carla dos Santos GOMES, Raoni Aquino Silva de SANTANA, Júlio TÓTA, Scott Dennis MILLER, and Rodrigo Augusto Ferreira de SOUSA. "Hydroclimatic variables associated with El Nino and La Nina events at the Curuá-Una hydroelectric reservoir, Central Amazonia." Acta Amazonica 46, no. 3 (2016): 303–8. http://dx.doi.org/10.1590/1809-4392201600083.

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ABSTRACT The anomalies of Sea Surface Temperature (SST) influence rainfall and therefore the regime of the rise and fall in the level of the rivers in the Amazon region. The aim of this study was to investigate the influence of the El Nino-Southern Oscillation (ENSO) on hydroclimatic variables and identify the existence of trends on these variables in the Curuá-Una hydroelectric reservoir in the West of the State of Pará. It was used 27 years of monthly precipitation and water flow data to identify possible trends using a non-parametric test (Mann Kendall, p<0.05), and the standardized prec

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Sugiarto, Yon, and Dori Kurniawan. "ANALISIS DAMPAK ENSO (EL-NINO SOUTHERN OSCILLATION) TERHADAP TINGKAT KEKERINGAN UNTUK TANAMAN PANGAN DAN PALAWIJA (STUDI KASUS : SULAWESI SELATAN)." Agromet 23, no. 2 (2009): 182. http://dx.doi.org/10.29244/j.agromet.23.2.182-198.

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<p>Weather and climate variability is a long-term weather changes that are characterized by fluctuations and deviations from normal conditions. One possible cause is the ENSO (El-Nino Southern Oscillation) which affected in drought events. This research was conducted to determine and analyze the level of drought in South Sulawesi due to the influence of ENSO and compare the production of food crops and secondary food crops in normal years and ENSO.<br />Drought index is calculated based on the Palmer method by using data of rainfall, air temperature and soil moisture as input. Base

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Gamble, Felicity, Grant Beard, Andrew Watkins, et al. "Tracking the El Nino-Southern Oscillation in real-time: a staged communication approach to event onset." Journal of Southern Hemisphere Earth Systems Science 67, no. 2 (2017): 64. http://dx.doi.org/10.1071/es17006.

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Communicating the development of El Niño and La Niña events is often challenging, largely due to the general misconception that the transition to an event can occur rapidly – like flicking a switch. Additionally, in Australia the association of El Niño with drought, and La Niña with flood, and the impacts that result, can often cloud the message. The Australian Bureau of Meteorology is responsible for issuing updates on the current status of the El Niño-Southern Oscillation (ENSO), and declaring the onset and demise of an event. To assist in the communication of this often complex message, the

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Návar, José, and Liliana Lizárraga-Mendiola. "Tree-ring growth and hydro-climatic variability in temperate dendrochronologies of northern Mexico." Agronomía Colombiana 32, no. 1 (2014): 103–12. http://dx.doi.org/10.15446/agron.colomb.v32n1.41271.

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This report addresses the following questions: a) is the diameter growth described by the standard ring width anomaly (SRWA) of Psudotsuga menziesii (Mirb.) Franco trees related to precipitation (P), pan evaporation (E), evapotranspiration (Et), runoff (Q), and soil moisture content (θ) derived from a water balance model?; b) is the SRWA associated with synoptic climate events such as El Nino Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO), and the Atlantic Multidecadal Oscillation (AMO)?, and c) are P, Et and θ related to ENSO, PDO and AMO events? The SRWA for three dendroc

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Chung, Christine T. Y., and Scott B. Power. "The non-linear impact of El Nino, La Nina and the Southern Oscillation on seasonal and regional Australian precipitation." Journal of Southern Hemisphere Earth Systems Science 67, no. 1 (2017): 25. http://dx.doi.org/10.1071/es17004.

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The relationship between El Niño-Southern Oscillation (ENSO) indices and precipitation (P) in some parts of Australia has previously been shown to be non-linear on annual and seasonal time scales. Here we examine the relationship between P and the Southern Oscillation Index (SOI) at all Australian locations and in all seasons. We show that in many Australian regions, there is more-than-expected P during strong La Niña years (SOI&gt;13), but less-than-expected drying during strong El Niño years (SOI

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Nadolnyak, Denis, and Dmitry Vedenov. "Information Value of Climate Forecasts for Rainfall Index Insurance for Pasture, Rangeland, and Forage in the Southeast United States." Journal of Agricultural and Applied Economics 45, no. 1 (2013): 109–24. http://dx.doi.org/10.1017/s1074070800004612.

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In this article, possible use of climate forecasts in rainfall index insurance of hay and forage production is considered in a geographical area (southeast United States) relatively heavily impacted by the El Nino Southern Oscillation (ENSO). Analysis of the stochastic properties of rainfall, yields, and the ENSO forecasts using the copula technique shows that the forecast impact depends on the proximity to the Gulf Coast where the impact of the ENSO is more pronounced and earlier in the year. Stochastic modeling shows that the use of skillful long-term climate forecasts by the insured produce

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Ladavia, Chirag. "Estimation of Fluctuations and Global Tele-connections in the Monsoonal Rainfall and Associated Floods for Barmer District." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (2022): 2221–26. http://dx.doi.org/10.22214/ijraset.2022.42802.

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Abstract: This paper is about the fluctuations and global teleconnections in the monsoonal rainfall and associated floods of Barmer district, Rajasthan, India. For investigation of precipitation and related floods, the precipitation information for period of 1901-2002 is collected from India Meteorological Department (IMD) for Barmer district. Inter-monsoon rainfall variability analysis, percent departure from mean, Normalized Accumulated Departure from Mean (NADM) and conditional probability technique for El Nino and Southern Oscillation (ENSO) have been used for the analyses of monsoonal rai

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Janicot, S. "Impact of warm ENSO events on atmospheric circulation and convection over the tropical Atlantic and West Africa." Annales Geophysicae 15, no. 4 (1997): 471–75. http://dx.doi.org/10.1007/s00585-997-0471-x.

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Abstract. Empirical studies have shown that warm El Nino/Southern Oscillation (ENSO) episodes are associated during northern summer with, first, a southward location of the intertropical convergence zone (ITCZ) over the tropical Atlantic, and, second, a weakened convection over West Africa where the ITCZ is near its mean latitude. A modelling experiment presented here is used to help explain this apparent contradiction. In simulated ENSO conditions, the ITCZ is located southwards over the tropical Atlantic. Over West Africa the intertropical front is also displaced southwards, but more slightl

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Oladejo, K. M. "RELATIONSHIP OF EL NINO/SOUTHERN OSCILLATION TO RAINFALL PATTERNS IN NIGERIA." Open Journal of Environmental Research (ISSN: 2734-2085) 1, no. 1 (2020): 1–20. http://dx.doi.org/10.52417/ojer.v1i1.68.

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This paper examines the relationship between El Nino/Southern Oscillation (ENSO) and rainfall patterns in Nigeria. Annual rainfall totals, growing season rainfall totals and annual raindays of 27 Nigerian meteorological stations with varying lengths of records from 1903 to 2012 were collected from the Nigerian Meteorological Agency (NIMET). Monthly Sea Surface Temperatures (SSTs) anomalies data over Atlantic and Pacific Oceans and Southern Oscillation Index (SOI) were obtained from Climatic Prediction Centre (CPC). Kendall tau statistics and Step-Wise Multiple Regression model were used for da

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