Analisis Iklim Ekstrim Untuk Deteksi Perubahan Iklim Di Sumatera Barat

Abstract

Significant consequences of global warming due to climate change, which is characterized by increasing extremes of climate events, both magnitude and frequency. Climate change that occurs in an area is highly dependent on the sensitivity of local factors in responding to global climate change that occurred. The research was conducted in West Sumatera region which was divided into two parts of topography, lowland and highlands, using observation data and model data. The extreme climate index is determined by using the ETCCDI standard. Climate change is also seen from the shift in climate patterns within a predetermined period of time. The significance of extreme climatic trends and climate change is done by the Mann-Kendall test. The result of the analysis shows that in general there has been an increase in air temperature in the research area, both in highland and lowland areas there is a tendency to increase extreme rainfall in highland areas, while for lowland areas tend to experience a negative trend. Trend test results show that not all variations of extreme climate index trends are significant on significance tests at 90% and 95% or more confidence levels and there is also no difference in extreme climatic conditions between lowland and upland areas. Temperature pattern shift of 0.5 to 1.0 OC in both low and high areas of research. As for the pattern of rain occurred shift with lower average for in lowland area of research area and tendency of increasing amount of rainfall in highland area of research area.

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

“…Kajian pemanfaatan IIE telah dilakukan pada beberapa lokasi untuk melihat ada tidaknya perubahan kejadian cuaca atau iklim ekstrem sebagai deteksi awal terjadinya perubahan iklim. Penelitian di Sumatera Barat menunjukkan terdapat perbedaan kecenderungan IIE antara daerah dataran tinggi dan rendah [8], sementara di Aceh terdapat perbedaan kecenderungan nilai IIE antara daerah pola hujan ekuatorial dan monsunal [9]. Penelitian lain di Para State, Brazil menyebutkan bahwa tidak semua daerah mengalami perubahan nilai IIE secara signifikan [10].…”

Kajian Identifikasi Penurunan Tren Curah Hujan, CDD dan CWD di Kota Kupang, Nusa Tenggara Timur

“…Konsekuensi signifikan dari pemanasan global akibat meningkatnya konsentrasi gas rumah kaca di atmosfer adalah terjadinya perubahan iklim [1] yang saat ini telah diakui sebagai suatu tantangan terpenting di dunia [2]. Merujuk pada definisinya, perubahan iklim adalah berubahnya pola dan intensitas unsur iklim pada periode waktu yang dapat dibandingkan [3].…”

Assessment of Climate Change Based on Annual Trend and Change of Temperature in Manokwari, West Papua

“…Berdasarkan hasil observasi, suhu permukaan bumi mengalami kenaikan sejak revolusi industri berlangsung (Aldrian, 2011). Pemanasan global akibat meningkatnya konsentrasi gas rumah kaca berdampak pada perubahan iklim yang ditandai dengan meningkatnya kejadian-kejadian iklim ekstrim (Nugroho, 2019). World Meteorological Organization (WMO) dalam Provisional Statement on the Status of the Global Climate in 2019 menyatakan bahwa kenaikan suhu rata-rata global Januari hingga Oktober 2019 sekitar 1,1 ± 0,1°C di atas tingkat pra-industri dan berdasarkan laporan Intergovernmental Panel on Climate Change (IPCC) pemanasan akibat ulah manusia mencapai sekitar 0,8°C.…”