Advances in Marine Biogenic Aerosols and their Effects on Aerosol-Cloud Interactions Research over the Southern Ocean: a review
at : Sep 14, 2021 11:04:38  (view:218)

Advances in Marine Biogenic Aerosols and their Effects on Aerosol-Cloud Interactions Research over the Southern Ocean: a review

XU Yifan1, XU Guojie1*, CHEN Liqi2 & ZHANG Miming2

1 Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science and Technology, Nanjing 210044, China;

2 Key Laboratory of Global Change and Marine - Atmospheric Chemistry (GCMAC) of Ministry of Natural Resources (MNR), Third Institute of Oceanography (TIO), Xiamen 361005, China

Abstract: The Southern Ocean (SO) plays important roles in global climate. Changing of biogeochemistry of the SO and its ecosystem may influence the distribution of atmospheric aerosols and cloud, finally mediating the climate. Here, we reviewed the existing knowledge on the interactions between marine aerosols and cloud over the SO, encapsulating characteristics, processes, and impacts of marine primary organic aerosols (POA) and secondary organic aerosols (SOA) and their roles as cloud condensation nuclei (CCN) and ice nuclei (IN). The interaction processes of marine ecosystem-aerosol-cloud were discussed in details. By assimilating the latest research advances on the SO, we summarized the marine productivity and the formation mechanism of marine biogenic aerosol and their interaction with cloud and then climate. In addition, the influences of global warming on marine ecosystem and the feedback by aerosol-cloud interactions in the SO were also explored. Highly diversified marine aerosols could impact the radiation budget and oceanic low-level clouds over the SO. Under the global warming, the SO may respond in varying degrees and more researches are urgently needed to assess the climate change. The findings reported in this paper contribute towards a better understanding of marine productivity, aerosol-cloud interactions and climate change in the SO.

Keywords: Southern Ocean, marine biogenic aerosols, cloud condensation nuclei, ice nuclei, climate change