Chlorophyll-a variability during positive IOD - the east season period in 2019 in Padang Sea, IndonesiaDandi Arianto Pelly, Muh Aris Marfai, Evita Hanie Pangaribowo and Akhmad FadholiE3S Web Conf., 200 (2020) 06002DOI: https://doi.org/10.1051/e3sconf/202020006002