Sea-ice loss amplifies summertime decadal CO2increase in the western Arctic Ocean

被引：59

作者：

Ouyang, Zhangxian ^{[1
]}

Qi, Di ^{[2
]}

Chen, Liqi ^{[2
]}

Takahashi, Taro ^{[3
]}

Zhong, Wenli ^{[4
]}

DeGrandpre, Michael D. ^{[5
]}

Chen, Baoshan ^{[1
]}

Gao, Zhongyong ^{[2
]}

Nishino, Shigeto ^{[6
]}

Murata, Akihiko ^{[6
,7
]}

Sun, Heng ^{[2
]}

Robbins, Lisa L. ^{[8
]}

Jin, Meibing ^{[9
]}

Cai, Wei-Jun ^{[1
]}

机构：

[1] Univ Delaware, Sch Marine Sci & Policy, Newark, DE 19716 USA

[2] Minist Nat Resources MNR, Inst Oceanog 3, MNR, Key Lab Global Change & Marine Atmospher Chem, Xiamen, Peoples R China

[3] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA

[4] Ocean Univ China, Key Lab Phys Oceanog, Qingdao, Peoples R China

[5] Univ Montana, Dept Chem & Biochem, Missoula, MT 59812 USA

[6] Japan Agcy Marine Earth Sci & Technol, Inst Arct Climate & Environm Res, Yokosuka, Kanagawa, Japan

[7] Japan Agcy Marine Earth Sci & Technol, Res Inst Global Change, Yokosuka, Kanagawa, Japan

[8] Univ S Florida, Coll Marine Sci, St Petersburg, FL USA

[9] Int Arctic Res Ctr, Fairbanks, AK USA

来源：

NATURE CLIMATE CHANGE | 2020年 / 10卷 / 07期

基金：

中国国家自然科学基金;

关键词：

CO2 UPTAKE CAPACITY; SURFACE OCEAN; INORGANIC CARBON; CANADA BASIN; WATER; PCO(2); ALKALINITY; MECHANISMS; INCREASES; CHEMISTRY;

D O I：

10.1038/s41558-020-0784-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Rapid climate warming and sea-ice loss have induced major changes in the sea surface partial pressure of CO2((pCO2)). However, the long-term trends in the western Arctic Ocean are unknown. Here we show that in 1994-2017, summer (pCO2) in the Canada Basin increased at twice the rate of atmospheric increase. Warming and ice loss in the basin have strengthened the pCO(2) seasonal amplitude, resulting in the rapid decadal increase. Consequently, the summer air-sea CO2 gradient has reduced rapidly, and may become near zero within two decades. In contrast, there was no significant pCO(2) increase on the Chukchi Shelf, where strong and increasing biological uptake has held pCO(2) low, and thus the CO2 sink has increased and may increase further due to the atmospheric CO2 increase. Our findings elucidate the contrasting physical and biological drivers controlling sea surface pCO(2) variations and trends in response to climate change in the Arctic Ocean.

引用

页码：678 / +

页数：19

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