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Fractal analysis of GISS Earth's surface temperature data | ||
| Journal of Interfaces, Thin Films, and Low dimensional systems | ||
| دوره 7، شماره 1، اسفند 2023، صفحه 721-729 اصل مقاله (942.89 K) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22051/jitl.2024.46341.1106 | ||
| نویسندگان | ||
| Maedeh Lak* 1؛ Sakineh Hosseinabadi* 2؛ Amir Ali Masoudi* 1 | ||
| 1Department of Condensed Matter Physics, Faculty of Physics, Alzahra University, Tehran, Iran | ||
| 2Department of Physics, East Tehran Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده | ||
| Rising temperature plays a significant role in global warming and has consequences on human health conditions, ecosystems, energy etc. Hence, studying and monitoring its states will help scientists seek solutions to prevent its harmful effects. In this study, we investigated the Earth's surface temperature anomaly fluctuations by fractal analysis. We gathered the temperature anomaly dataset including land and sea surface temperatures. The maximum, minimum, and average temperatures of each year were investigated. Furthermore, we used multifractal detrended fluctuation analysis (MF-DFA) to figure out whether these fluctuations appear randomly or follow a rule. By removing the trend and applying the MFDFA on data, the Hurst exponent obtained as H=0.83±0.02, which means a positive long-term correlation exists among data that causes the increasing trend. Besides, the scalability exponent, τ(q), and the singularity spectrum, f(α), were plotted, and both of them approved the multifractality for the temperature dataset. To discover what is the cause of multifractality, the main, shuffling, and surrogating data were evaluated. The results depicted both the long correlation for small and large fluctuations and the distribution deviation from Gaussian distribution have effects on the multifractal behavior of the data, but according to the graph, the long correlation is more effective. | ||
| کلیدواژهها | ||
| Multifractal Detrended Fluctuation Analysis؛ Long Term Correlation؛ GISTEMP | ||
| عنوان مقاله [English] | ||
| آنالیز فراکتالی داده های GISS دمای سطح زمین | ||
| نویسندگان [English] | ||
| مائده لک1؛ سکینه حسین آبادی2؛ امیرعلی مسعودی1 | ||
| 1گروه فیزیک ماده چگال، دانشکده فیزیک، دانشگاه الزهرا، تهران، ایران | ||
| 2گروه فیزیک، دانشگاه آزاد اسلامی، واحد تهران شرق، تهران، ایران | ||
| مراجع | ||
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