Implications of extreme events on the water balance in Java.

Autor: Susanti, Indah, Sipayung, Sinta Berliana, Siswanto, Bambang, Maryadi, Edy, Latifah, Hidayatul, Nurlatifah, Amalia, Supriatin, Lilik S., Witono, Adi, Suhermat, Mamat, Meiliasari, Meiliasari, Rahmawati, Yuli, Delina, Mutia, Fitriani, Ella
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Zdroj: AIP Conference Proceedings; 2020, Vol. 2331 Issue 1, p1-7, 7p
Abstrakt: Water availability determines the survival of all creatures. Extreme conditions that often arise related to climate change are drought and flood. Impacts of climate change and extreme weather on the water balance in Java have been analyzed using TerraClimate data from January 1958 to December 2019 with monthly temporal resolution and spatial resolution of 1/24 ° or about 4 km. The data showed that climate change has led to an increasing trend of rainfall in Java by 1,472 mm per year. The data also showed that climate change has strengthened the intensity and frequency of extreme events as seen from the dry extreme events in 1997 and 2015 (El Niño) and wet extreme events in 2010 and 2016 (La Niña). This extreme event has had major implications for the water balance in Java. The high rainfall in 2010 and 2016 resulted in the saturation of soil moisture throughout the year, increased runoff level twice from its normal value, and floods in several areas in Java. On the other hand,when the rainfall was very low in 2015, there was a drought. Extreme wet conditions that occurred in the period of 2010 and 2016 have caused a high runoff on Java Island, where the higher rainfall that occurred in 2016 has smaller implications for the runoff than the 2010 rainfall. It was caused by higher rates of evapotranspiration and infiltration experienced in 2016. El Niño happened in 2015 where a long drought occurred and caused conditions of soil moisture to be very low reaching less than 50 mm while the average spatial runoff rate was close to zero. This is the condition of the water balance at the beginning of 2016. The rainfall that occurred in 2016 is mostly used for filling groundwater, depression, and surface water. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index