Lin says that the scholarly community generally agrees that manmade pollutants such as sulfur oxides and nitrogen oxides are the primary causes of the dramatic acidification of rain worldwide.
林能暉進一步分析，人為製造的硫氧化物（SOx）和氮氧化物（NOx）等污染物質，則是目前學界公認造成全球雨水急劇變酸的主因。