极地研究2023，Vol.35Issue(4)：499-507,9.DOI:10.13679/j.jdyj.20220421
西北冰洋二氧化碳分压变异与海冰变化的关系
Relationship between pCO2 variation and sea ice change in the western Arctic Ocean
摘要
Abstract
Sea ice retreat in the Arctic Ocean has caused an increase in open water area,which has consequently contributed to the absorption of more carbon dioxide(CO2)by surface seawater,and an increase in the par-tial pressure of CO2(pCO2).However,there is a lack of research on the dramatic changes in pCO2 during sea ice retreat and its interaction with sea ice.Based on the 3rd Chinese National Arctic Research Expedition data in 2008,this study found that the distribution of summer sea surface pCO2 in the western Arctic Ocean was characterized by low values on the shelf and high values in the ocean basin.The study area overall was a sink for atmospheric CO2,with air-sea CO2 fluxes of 13.8 mmol·m-2·d-1 in the shelf area and 3.7 mmol·m-2·d-1 in the basin.This study used a mass balance model to investigate the response of sea sur-face pCO2 in the Canadian Basin during the whole period of sea ice melting process.The results showed that:(1)during the melting process,pCO2 slowly increased by air-sea CO2 exchange;(2)after the sea ice had completely melted and with prolonged exposure of the sea surface to the air,the combined effects of air-sea CO2 exchange and warming resulted in a rapid increase in pCO2,and the rate of increase was higher than that in the melting stage.关键词
西北冰洋/pCO2/海表温度/海-气交换/净初级生产力Key words
western Arctic Ocean/pCO2/sea surface temperature/air-sea exchange/net primary productivity引用本文复制引用
赵雨,杨威,吴瀛旭,金梅兵,祁第..西北冰洋二氧化碳分压变异与海冰变化的关系[J].极地研究,2023,35(4):499-507,9.基金项目
国家重点研发计划(2019YFE0114800,2019YFC1509101)、国家自然科学基金(42176230,41941013)、福建省自然科学基金(2022J06026,2019Jo5148)、中国科学院海洋大科学研究中心重点部署项目(COMS2020Q12)和南方海洋科学与工程广东省实验室(珠海)自主研发项目(SML2021SP306)资助 （2019YFE0114800,2019YFC1509101）
