Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1904378116 |
Decadal increase in Arctic dimethylsulfide emission | |
Gali, Marti1,5; Devred, Emmanuel2; Babin, Marcel1,3,4; Levasseur, Maurice1 | |
2019 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2019 |
卷号 | 116期号:39页码:19311-19317 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; France; Spain |
英文摘要 | Dimethylsulfide (DMS), a gas produced by marine microbial food webs, promotes aerosol formation in pristine atmospheres, altering cloud radiative forcing and precipitation. Recent studies suggest that DMS controls aerosol formation in the summertime Arctic atmosphere and call for an assessment of pan-Arctic DMS emission (EDMS) in a context of dramatic ecosystem changes. Using a remote sensing algorithm, we show that summertime EDMS from ice-free waters increased at a mean rate of 13.3 +/- 6.7 Gg S decade(-1) (similar to 33% decade(-1)) north of 70 degrees N between 1998 and 2016. This trend, mostly explained by the reduction in sea-ice extent, is consistent with independent atmospheric measurements showing an increasing trend of methane sulfonic acid, a DMS oxidation product. Extrapolation to an ice-free Arctic summer could imply a 2.4-fold (+/- 1.2) increase in EDMS compared to present emission. However, unexpected regime shifts in Arctic geo- and ecosystems could result in future EDMS departure from the predicted range. Superimposed on the positive trend, EDMS shows substantial interannual changes and nonmonotonic multiyear trends, reflecting the interplay between physical forcing, ice retreat patterns, and phytoplankton productivity. Our results provide key constraints to determine whether increasing marine sulfur emissions, and resulting aerosol-cloud interactions, will moderate or accelerate Arctic warming in the context of seaice retreat and increasing low-level cloud cover. |
英文关键词 | dimethylsulfide Arctic Ocean plankton sea ice aerosols |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000487532900022 |
WOS关键词 | ATMOSPHERIC SULFUR ; PHYTOPLANKTON ; OCEAN ; AEROSOL ; DMS ; SURFACE ; SENSITIVITY ; BLOOMS ; ALBEDO |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/205180 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Laval, Biol Dept, Takuvik Joint Int Lab, Quebec City, PQ G1V 0A6, Canada; 2.Fisheries & Oceans Canada, Bedford Inst Oceanog, Dartmouth, NS B2Y 4A2, Canada; 3.CNRS, Takuvik Joint Int Lab, Paris, France; 4.Univ Laval, Biol Dept, Quebec City, PQ G1V 0A6, Canada; 5.Barcelona Supercomp Ctr, Earth Sci Dept, Barcelona 08034, Spain |
推荐引用方式 GB/T 7714 | Gali, Marti,Devred, Emmanuel,Babin, Marcel,et al. Decadal increase in Arctic dimethylsulfide emission[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(39):19311-19317. |
APA | Gali, Marti,Devred, Emmanuel,Babin, Marcel,&Levasseur, Maurice.(2019).Decadal increase in Arctic dimethylsulfide emission.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(39),19311-19317. |
MLA | Gali, Marti,et al."Decadal increase in Arctic dimethylsulfide emission".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.39(2019):19311-19317. |
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