Enhanced Arctic sea ice melting controlled by larger heat discharge of mid-Holocene rivers

被引：14

作者：

Dong, Jiang ^{[1
]}

Shi, Xuefa ^{[1
,2
]}

Gong, Xun ^{[3
,4
,5
,6
]}

Astakhov, Anatolii S. ^{[7
]}

Hu, Limin ^{[2
,8
]}

Liu, Xiting ^{[2
,8
]}

Yang, Gang ^{[1
]}

Wang, Yixuan ^{[9
]}

Vasilenko, Yuri ^{[7
]}

Qiao, Shuqing ^{[1
,2
]}

Bosin, Alexander ^{[7
]}

Lohmann, Gerrit ^{[6
,10
]}

机构：

[1] First Inst Oceanog, Key Lab Marine Geol & Metallogeny, Minist Nat Resources, Qingdao, Peoples R China

[2] Pilot Qingdao Natl Lab Marine Sci & Technol1, Lab Marine Geol, Qingdao, Peoples R China

[3] China Univ Geosci, Inst Adv Marine Res, Guangzhou, Peoples R China

[4] China Univ Geosci, State Key Lab Biogeol & Environm Geol, Hubei Key Lab Marine Geol Resources, Wuhan, Peoples R China

[5] Qilu Univ Technol, Shandong Prov Key Lab Comp Networks, Shandong Acad Sci, Jinan, Peoples R China

[6] Helmholtz Zentrum Polar & Meeresforsch, Alfred Wegener Inst, Bremerhaven, Germany

[7] Russian Acad Sci, VI Ilichev Pacific Oceanol Inst, Far Eastern Branch, Vladivostok, Russia

[8] Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Tech, Qingdao, Peoples R China

[9] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining, Peoples R China

[10] Univ Bremen, Dept Environm Phys, Bremen, Germany

来源：

NATURE COMMUNICATIONS | 2022年 / 13卷 / 01期

基金：

中国国家自然科学基金;

关键词：

FLUVIAL THERMAL EROSION; LENA RIVER; LOMONOSOV RIDGE; HOLOCENE; OCEAN; LUMINESCENCE; SEDIMENTS; TEMPERATURE; VARIABILITY; CLIMATE;

D O I：

10.1038/s41467-022-33106-1

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Arctic sea ice retreat is linked to extrapolar thermal energy import, while the potential impact of pan-Arctic river heat discharge on sea-ice loss has been unresolved. We reconstructed the Holocene history of Arctic sea ice and Russian pan-Arctic river heat discharge, combining ice-rafted debris records and sedimentation rates from the East Siberian Arctic Shelf with a compilation of published paleoclimate and observational data. In the mid-Holocene, the early summer (June-July) solar insolation was higher than that during the late Holocene, which led to a larger heat discharge of the Russian pan-Arctic rivers and contributed to more Arctic sea ice retreat. This intensified decline of early-summer sea ice accelerated the melting of sea ice throughout the summertime by lowering regional albedos. Our findings highlight the important impact of the larger heat discharge of pan-Arctic rivers, which can reinforce Arctic sea-ice loss in the summer in the context of global warming. Based on marine multiproxy records, a new study outlines the role of larger heat discharge of the pan-Arctic Rivers in determining the pronounced sea ice retreat over the East Siberian Arctic Shelf in the mid-Holocene.

引用

页数：9

共 80 条

[51] Observed Arctic sea-ice loss directly follows anthropogenic CO2 emission [J].