Response of atmospheric CO2 to the abrupt cooling event 8200 years ago

被引：17

作者：

Ahn, Jinho ^{[1
]}

Brook, Edward J. ^{[2
]}

Buizert, Christo ^{[2
]}

机构：

[1] Seoul Natl Univ, Sch Earth & Environm Sci, Seoul, South Korea

[2] Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 02期

基金：

新加坡国家研究基金会; 美国国家科学基金会;

关键词：

Carbon cycle; Abrupt climat change; Carbon dioxide; 8; 2 ka event; GLACIAL LAKE AGASSIZ; CLIMATE-CHANGE; CARBON-CYCLE; COLD EVENT; ICE CORE; CATASTROPHIC DRAINAGE; TAYLOR DOME; SIPLE DOME; SCALE; RECORDS;

D O I：

10.1002/2013GL058177

中图分类号：

P [天文学、地球科学];

学科分类号：

070403 [天体物理学];

摘要：

Atmospheric CO2 records for the centennial scale cooling event 8200years ago (8.2ka event) may help us understand climate-carbon cycle feedbacks under interglacial conditions, which are important for understanding future climate, but existing records do not provide enough detail. Here we present a new CO2 record from the Siple Dome ice core, Antarctica, that covers 7.4-9.0ka with 8 to 16year resolution. We observe a small, about 1-2ppm, increase of atmospheric CO2 during the 8.2ka event. The increase is not significant when compared to other centennial variations in the Holocene that are not linked to large temperature changes. Our results do not agree with leaf stomata records that suggest a CO2 decrease of up to similar to 25ppm and imply that the sensitivity of atmospheric CO2 to the primarily Northern Hemisphere cooling of the 8.2ka event was limited.

引用

页码：604 / 609

页数：6

共 58 条

[1]

A record of atmospheric CO2 during the last 40,000 years from the Siple Dome, Antarctica ice core -: art. no. D13305 [J].

Ahn, J ;

Wahlen, M ;

Deck, BL ;

Brook, EJ ;

Mayewski, PA ;

Taylor, KC ;

White, JWC .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2004, 109 (D13) :D133051-8

[2]

Atmospheric CO2 and climate on millennial time scales during the last glacial period [J].

Ahn, Jinho ;

Brook, Edward J. .

SCIENCE, 2008, 322 (5898) :83-85

[3]

Atmospheric CO2 and climate from 65 to 30 ka BP [J].

Ahn, Jinho ;

Brook, Edward J. .

GEOPHYSICAL RESEARCH LETTERS, 2007, 34 (10)

[4]

Abrupt change in atmospheric CO2 during the last ice age [J].

Ahn, Jinho ;

Brook, Edward J. ;

Schmittner, Andreas ;

Kreutz, Karl .

GEOPHYSICAL RESEARCH LETTERS, 2012, 39

[5]

Atmospheric CO2 over the last 1000 years: A high-resolution record from the West Antarctic Ice Sheet (WAIS) Divide ice core [J].

Ahn, Jinho ;

Brook, Edward J. ;

Mitchell, Logan ;

Rosen, Julia ;

McConnell, Joseph R. ;

Taylor, Kendrick ;

Etheridge, David ;

Rubino, Mauro .

GLOBAL BIOGEOCHEMICAL CYCLES, 2012, 26

[6]

A high-precision method for measurement of paleoatmospheric CO2 in small polar ice samples [J].

Ahn, Jinho ;

Brook, Edward J. ;

Howell, Kate .

JOURNAL OF GLACIOLOGY, 2009, 55 (191) :499-506

[7]

Alley RB, 1997, GEOLOGY, V25, P483, DOI 10.1130/0091-7613(1997)025<0483:HCIAPW>2.3.CO

[8]

[9]

The 8k event:: cause and consequences of a major Holocene abrupt climate change [J].

Alley, RB ;

Agústsdóttir, AM .

QUATERNARY SCIENCE REVIEWS, 2005, 24 (10-11) :1123-1149

[10]

High-resolution record of Northern Hemisphere climate extending into the last interglacial period [J].

Andersen, KK ;

Azuma, N ;

Barnola, JM ;

Bigler, M ;

Biscaye, P ;

Caillon, N ;

Chappellaz, J ;

Clausen, HB ;

DahlJensen, D ;

Fischer, H ;

Flückiger, J ;

Fritzsche, D ;

Fujii, Y ;

Goto-Azuma, K ;

Gronvold, K ;

Gundestrup, NS ;

Hansson, M ;

Huber, C ;

Hvidberg, CS ;

Johnsen, SJ ;

Jonsell, U ;

Jouzel, J ;

Kipfstuhl, S ;

Landais, A ;

Leuenberger, M ;

Lorrain, R ;

Masson-Delmotte, V ;

Miller, H ;

Motoyama, H ;

Narita, H ;

Popp, T ;

Rasmussen, SO ;

Raynaud, D ;

Rothlisberger, R ;

Ruth, U ;

Samyn, D ;

Schwander, J ;

Shoji, H ;

Siggard-Andersen, ML ;

Steffensen, JP ;

Stocker, T ;

Sveinbjörnsdóttir, AE ;

Svensson, A ;

Takata, M ;

Tison, JL ;

Thorsteinsson, T ;

Watanabe, O ;

Wilhelms, F ;

White, JWC .

NATURE, 2004, 431 (7005) :147-151

← 1 2 3 4 5 6 →