Strong Southern Ocean carbon uptake evident in airborne observations

被引：53

作者：

Long, Matthew C. ^{[1
]}

Stephens, Britton B. ^{[1
]}

McKain, Kathryn ^{[2
,3
]}

Sweeney, Colm ^{[3
]}

Keeling, Ralph F. ^{[4
]}

Kort, Eric A. ^{[5
]}

Morgan, Eric J. ^{[4
]}

Bent, Jonathan D. ^{[1
,4
,16
]}

Chandra, Naveen ^{[6
,17
]}

Chevallier, Frederic ^{[7
]}

Commane, Roisin ^{[8
]}

Daube, Bruce C. ^{[9
]}

Krummel, Paul B. ^{[10
]}

Loh, Zoe ^{[10
]}

Luijkx, Ingrid T. ^{[11
]}

Munro, David ^{[2
,3
]}

Patra, Prabir ^{[12
]}

Peters, Wouter ^{[11
,13
]}

Ramonet, Michel ^{[7
]}

Rodenbeck, Christian ^{[14
]}

Stavert, Ann ^{[10
]}

Tans, Pieter ^{[3
]}

Wofsy, Steven C. ^{[9
,15
]}

机构：

[1] Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA

[2] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[3] NOAA, Global Monitoring Lab, Boulder, CO USA

[4] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA

[5] Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA

[6] Natl Inst Environm Studies, Tsukuba, Ibaraki, Japan

[7] CEA CNRS UVSQ, Lab Sci Climat & Environm, IPSL LSCE, UMR8212 91191, Gif Sur Yvette, France

[8] Columbia Univ, Lamont Doherty Earth Observ, Dept Earth & Environm Sci, Palisades, NY USA

[9] Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA

[10] CSIRO Oceans & Atmosphere, Climate Sci Ctr, Aspendale, Vic, Australia

[11] Wageningen Univ, Dept Meteorol & Air Qual, Environm Sci Grp, Wageningen, Netherlands

[12] Japan Agcy Marine Earth Sci & Technol JAMSTEC, Res Inst Global Change, Yokohama, Kanagawa, Japan

[13] Univ Groningen, Ctr Isotope Res, Groningen, Netherlands

[14] Max Planck Inst Biogeochem, Jena, Germany

[15] Harvard Univ, Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[16] Picarro Inc, Santa Clara, CA USA

[17] JAMSTEC, Res Inst Global Change, Yokohama, Kanagawa, Japan

来源：

SCIENCE | 2021年 / 374卷 / 6572期

关键词：

ATMOSPHERIC CO2; TIME-SERIES; SURFACE; VARIABILITY; EXCHANGE; MODEL; TRENDS; FLUXES; PCO(2); HISTORY;

D O I：

10.1126/science.abi4355

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：

The Southern Ocean plays an important role in determining atmospheric carbon dioxide (CO2), yet estimates of air-sea CO2 flux for the region diverge widely. In this study, we constrained Southern Ocean air-sea CO2 exchange by relating fluxes to horizontal and vertical CO2 gradients in atmospheric transport models and applying atmospheric observations of these gradients to estimate fluxes. Aircraft-based measurements of the vertical atmospheric CO2 gradient provide robust flux constraints. We found an annual mean flux of -0.53 +/- 0.23 petagrams of carbon per year (net uptake) south of 45 degrees S during the period 2009-2018. This is consistent with the mean of atmospheric inversion estimates and surface-ocean partial pressure of CO2 (P-CO2)-based products, but our data indicate stronger annual mean uptake than suggested by recent interpretations of profiling float observations.

引用

页码：1275 / +

页数：66

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