Climate-relevant gases and their impact on the climate and environment of polar oceans  

作　　者：ZHAN Liyang YE Wangwang YAN Jinpei ZHANG Miming LIU Jian TIAN Rong WANG Shanshan JIE Xiaomeng LI Yuhang WANG Wentao 

机构地区：[1]Third Institute of Oceanography,Ministry of Natural Resources,Xiamen 361005,China [2]The Administrative Center for China’s Agenda 21,Natural Science Foundation of China,Ministry of Science and Technology,Beijing 100036,China

出　　处：《Advances in Polar Science》2025年第1期5-17,共13页极地科学进展(英文版)

基　　金：supported the National Natural Science Foundation of China(Grant nos.4227624,42376239 and 42476253)。

摘　　要：Because of their effect on climate,carbon dioxide(CO_(2)),methane(CH_(4)),nitrous oxide(N_(2)O),and dimethylsulfide(DMS)are collectively designated as climate-relevant gases(CRGs).CO_(2),CH_(4),and N_(2)O are greenhouse gases contributing to global warming(positive climate feedback).Conversely,DMS is involved in the generation of cloud condensation nuclei,thus in the formation of clouds that cool the boundary layer by reflecting incoming solar radiation(negative climate feedback).Despite their scarcity,field observations and model results have demonstrated the essential role of polar oceans in the budget of CRGs.For example,the Southern Ocean represents a substantial CO_(2)sink but a source of N_(2)O and DMS,thereby exerting variable feedback on climate change.Unfortunately,because of the severe environmental conditions at polar latitudes,substantial knowledge gaps remain,for example on the mechanisms underlying CRGs formation or on the strength and distribution of their sources and sinks in the Southern and Arctic Oceans.Here,we review the most recent research results on the distribution,production-loss processes,and abundance variations of CRGs in the polar oceans.We list the remaining knowledge gaps and propose future directions of research on CRGs in the polar oceans,as a useful reference for future studies.

关 键 词：POLAR ocean Arctic Ocean Southern Ocean climate-relavent gases greenhouse gases 

分 类 号：P73[天文地球—海洋科学]