Kajian Mikrofisis Awan Berbasis Satelit pada Kejadian Erupsi Vulkanik Menggunakan Data Himawari-9 (Studi Kasus Erupsi Gunung Lewotobi 12 November 2024)
DOI:
https://doi.org/10.29303/goescienceed.v6i4.784Keywords:
erupsi vulkanik, mikrofisis awan, aerosol, Himawari-9, Gunung LewotobiAbstract
Penelitian ini bertujuan untuk memahami dampak erupsi Gunung Lewotobi pada karakteristik mikrofisis awan menggunakan data satelit Himawari-9. Erupsi vulkanik dapat meningkatkan konsentrasi aerosol di atmosfer yang berperan sebagai inti kondensasi awan dan dapat memengaruhi sifat-sifat awan. Dalam studi ini, data yang dianalisis mencakup ketebalan optik awan (COT), radius efektif awan (CER), jumlah tetesan awan (CDNC) pada periode sebelum dan saat kejadian erupsi. Sebaran abu vulkanik dianalisis menggunakan metode RGB, yang menunjukkan penyebaran abu ke arah barat dari gunung. Hasil penelitian menunjukkan pertambahan konsentrasi aerosol tidak memberi pengaruh signifikan terhadap reflektivitas awan. Kejadian erupsi berefek pada perubahan mikrofisis awan dengan adanya peningkatan jumlah tetes awan dan penurunan radius efektif. Temuan ini memberikan wawasan terkait dampak erupsi vulkanik terhadap karakteristik mikrofisis awan terutama di wilayah Indonesia.
References
Breen, K. H., Barahona, D., Yuan, T., Bian, H., & James, S. C. (2021). Effect of volcanic emissions on clouds during the 2008 and 2018 Kilauea degassing events. Atmospheric Chemistry and Physics, 21(10), 7749–7771. https://doi.org/10.5194/acp-21-7749-2021
Christensen, M. W., Chen, Y. C., & Stephens, G. L. (2016). Aerosol indirect effect dictated by liquid clouds. Journal of Geophysical Research: Atmospheres, 121(24), 14–636. https://doi.org/10.1002/2016JD025245
Jiang, J. H., Su, H., Huang, L., Wang, Y., Massie, S., Zhao, B., Omar, A., & Wang, Z. (2018). Contrasting effects on deep convective clouds by different types of aerosols. Nature Communications, 9(1), 3874. https://doi.org/10.1038/s41467-018-06280-4
Jonathan, I. S., Sukarasa, I. K., & Wirata, I. W. (2021). Analisis sebaran debu vulkanik erupsi Gunung Agung 2018 dan pengaruhnya terhadap suhu permukaan darat wilayah Bali dengan menggunakan metode split windows. Buletin Fisika, 22(2), 112–118.
Krisna, T. C., Hayati, N., & Hariyanto, T. (2021). Remote sensing of droplet number concentration of aerosol-induced clouds during the 2019 fire event in Borneo, Indonesia. IOP Conference Series: Earth and Environmental Science, 731(1), 012016. https://doi.org/10.1088/1755-1315/731/1/012016
Lohmann, U., & Feichter, J. (2005). Global indirect aerosol effects: A review. Atmospheric Chemistry and Physics, 5(3), 715–737. https://doi.org/10.5194/acp-5-715-2005
Malavelle, F. F., Haywood, J. M., Jones, A., Gettelman, A., Clarisse, L., Bauduin, S., & Thordarson, T. (2017). Strong constraints on aerosol–cloud interactions from volcanic eruptions. Nature, 546(7659), 485–491. https://doi.org/10.1038/nature22974
Martucci, G., Ovadnevaite, J., Ceburnis, D., Berresheim, H., Varghese, S., Martin, D., & O'Dowd, C. D. (2012). Impact of volcanic ash plume aerosol on cloud microphysics. Atmospheric Environment, 48, 205–218. https://doi.org/10.1016/j.atmosenv.2011.12.033
McCoy, D. T., & Hartmann, D. L. (2015). Observations of a substantial cloud-aerosol indirect effect during the 2014–2015 Bárðarbunga–Veiðivötn fissure eruption in Iceland. Geophysical Research Letters, 42(23), 10,409–10,417. https://doi.org/10.1002/2015GL067070
Ramanathan, V., & Carmichael, G. (2008). Global and regional climate changes due to black carbon. Nature Geoscience, 1(4), 221–227. https://doi.org/10.1038/ngeo156
Sekiguchi, M., Nakajima, T., Suzuki, K., Kawamoto, K., Higurashi, A., Rosenfeld, D., Sano, I., & Mukai, S. (2003). A study of the direct and indirect effects of aerosols using global satellite data sets of aerosol and cloud parameters. Journal of Geophysical Research: Atmospheres, 108(D22). https://doi.org/10.1029/2002JD003359
Susanti, I., Tursilowati, L., & Cholianawati, N. (2014). Analisis pengaruh aerosol pada awan di Indonesia [Aerosol impact on clouds analysis over Indonesia]. Jurnal Sains Dirgantara, 12(1).
Twomey, S. (1977). The influence of pollution on the shortwave albedo of clouds. Journal of the Atmospheric Sciences, 34(7), 1149–1152. https://doi.org/10.1175/1520-0469(1977)034<1149:TIOPOT>2.0.CO;2
Wall, C. J., Storelvmo, T., & Possner, A. (2023). Global observations of aerosol indirect effects from marine liquid clouds. Atmospheric Chemistry and Physics, 23(20), 13125–13141. https://doi.org/10.5194/acp-23-13125-2023
