Estimation of Gridded Atmospheric Oxygen Consumption from 1975 to 2018

作     者：Xiaoyue LIU Jianping HUANG Jiping HUANG Changyu LI Lei DING Wenjun MENG Xiaoyue LIU;Jianping HUANG;Jiping HUANG;Changyu LI;Lei DING;Wenjun MENG

作者机构：Collaborative Innovation Center for Western Ecological SafetyLanzhou UniversityLanzhou 730000China Enlightening Bioscience Research CenterMississauga L4X 2X7Canada Laboratory for Earth Surface ProcessesCollege of Urban and Environmental SciencesPeking UniversityBeijing 100871China 

出 版 物：《Journal of Meteorological Research》 (气象学报（英文版）)

年 卷 期：2020年第34卷第3期

页      面：646-658页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：Supported by the National Natural Science Foundation of China (41521004) China 111 Project (B13045) 

主　　题：oxygen(O2)cycle climate change anthropogenic activities 

摘      要：Atmospheric Oxygen(O2)is one of the dominating features that allow the earth to be a habitable planet with advanced civilization and diverse ***,since the late 1980 s,observational data have indicated a steady decline in O2 content on the scale of parts-per-million *** current scientific consensus is that the decline is caused by the fossil-fuel combustion;however,few works have been done to quantitatively evaluate the response of O2 cycle under the anthropogenic impact,at both the global and regional *** paper manages to quantify the land O2 flux and makes the initial step to quantificationally describe the anthropogenic impacts on the global O2 *** estimation reveals that the global O2 consumption has experienced an increase from 33.69±1.11 to47.63±0.80 Gt(gigaton,109 t)O2yr^-1 between 2000 and 2018,while the land production of O2(totaling 11.34±13.48 Gt O2yr^-1 averaged over the same period)increased only *** 2018,the combustion of fossil-fuel and industrial activities(38.45±0.61 Gt O2yr^-1)contributed the most to consumption,followed by wildfires(4.97±0.48 Gt O2yr^-1)as well as livestock and human respiration processes(2.48±0.16 and 1.73±0.13 Gt O2yr^-1,respectively).Burning of fossil-fuel that causes large O2 fluxes occurs in East Asia,India,North America,and Europe,while wildfires that cause large fluxes in comparable magnitude are mainly distributed in central Africa.