Separation of atmosphere-ocean-vegetation feedbacks and synergies for mid-Holocene climate

被引：26

作者：

Otto, J. ^{[1
,2
]}

Raddatz, T. ^{[1
]}

Claussen, M. ^{[1
,3
]}

Brovkin, V. ^{[1
]}

Gayler, V. ^{[1
]}

机构：

[1] Max Planck Inst Meteorol, D-20146 Hamburg, Germany

[2] Int Max Planck Res Sch Earth Syst Modelling, Hamburg, Germany

[3] Univ Hamburg, Inst Meteorol, D-2000 Hamburg, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

关键词：

LAST GLACIAL MAXIMUM; PMIP2 COUPLED SIMULATIONS; MID-LATITUDE; HOLOCENE; MODEL; TEMPERATURE; VARIABILITY;

D O I：

10.1029/2009GL037482

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We determine both the impact of atmosphere-ocean and atmosphere-vegetation feedback, and their synergy on northern latitude climate in response to the orbitally-induced changes in mid-Holocene insolation. For this purpose, we present results of eight simulations using the general circulation model ECHAM5-MPIOM including the land surface scheme JSBACH with a dynamic vegetation module. The experimental set-up allows us to apply a factor-separation technique to isolate the contribution of dynamic Earth system components (atmosphere, atmosphere-ocean, atmosphere-vegetation, atmosphereocean-vegetation) to the total climate change signal. Moreover, in order to keep the definition of seasons consistent with insolation forcing, we define the seasons on an astronomical basis. Our results reveal that north of 40 degrees N atmosphere-vegetation feedback (maximum in spring of 0.08 degrees C) and synergistic effects (maximum in winter of 0.25 degrees C) are weaker than in previous studies. The most important modification of the orbital forcing is related to the atmosphere-ocean component (maximum in autumn of 0.78 degrees C). Citation: Otto, J., T. Raddatz, M. Claussen, V. Brovkin, and V. Gayler (2009), Separation of atmosphereoceanvegetation feedbacks and synergies for mid-Holocene climate, Geophys. Res. Lett., 36, L09701, doi:10.1029/2009GL037482.

引用

页数：5

共 22 条

[1]

BERGER A, 2001, ROLE CO2 SEA LEVEL V, P119

[2]

BERGER AL, 1978, J ATMOS SCI, V35, P2362, DOI [10.1175/1520-0469(1978)035<2362:LTVODI>2.0.CO

[3]

2, 10.1016/0033-5894(78)90064-9]

[4] Climate change and Arctic ecosystems:: 1.: Vegetation changes north of 55°N between the last glacial maximum, mid-Holocene, and present -: art. no. 8170 [J].

Bigelow, NH ;

Brubaker, LB ;

Edwards, ME ;

Harrison, SP ;

Prentice, IC ;

Anderson, PM ;

Andreev, AA ;

Bartlein, PJ ;

Christensen, TR ;

Cramer, W ;

Kaplan, JO ;

Lozhkin, AV ;

Matveyeva, NV ;

Murray, DF ;

McGuire, AD ;

Razzhivin, VY ;

Ritchie, JC ;

Smith, B ;

Walker, DA ;

Gajewski, K ;

Wolf, V ;

Holmqvist, BH ;

Igarashi, Y ;

Kremenetskii, K ;

Paus, A ;

Pisaric, MFJ ;

Volkova, VS .

JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2003, 108 (D19)

[5] Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum - Part 2: feedbacks with emphasis on the location of the ITCZ and mid- and high latitudes heat budget [J].

Braconnot, P. ;

Otto-Bliesner, B. ;

Harrison, S. ;

Joussaume, S. ;

Peterchmitt, J.-Y. ;

Abe-Ouchi, A. ;

Crucifix, M. ;

Driesschaert, E. ;

Fichefet, Th. ;

Hewitt, C. D. ;

Kageyama, M. ;

Kitoh, A. ;

Loutre, M.-F. ;

Marti, O. ;

Merkel, U. ;

Ramstein, G. ;

Valdes, P. ;

Weber, L. ;

Yu, Y. ;

Zhao, Y. .

CLIMATE OF THE PAST, 2007, 3 (02) :279-296

[6] Results of PMIP2 coupled simulations of the Mid-Holocene and Last Glacial Maximum -: Part 1:: experiments and large-scale features [J].

Braconnot, P. ;

Otto-Bliesner, B. ;

Harrison, S. ;

Joussaume, S. ;

Peterchmitt, J.-Y. ;

Abe-Ouchi, A. ;

Crucifix, M. ;

Driesschaert, E. ;

Fichefet, Th. ;

Hewitt, C. D. ;

Kageyama, M. ;

Kitoh, A. ;

Laine, A. ;

Loutre, M.-F. ;

Marti, O. ;

Merkel, U. ;

Ramstein, G. ;

Valdes, P. ;

Weber, S. L. ;

Yu, Y. ;

Zhao, Y. .

CLIMATE OF THE PAST, 2007, 3 (02) :261-277

[7] Global biogeophysical interactions between forest and climate [J].

Brovkin, Victor ;

Raddatz, Thomas ;

Reick, Christian H. ;

Claussen, Martin ;

Gayler, Veronika .

GEOPHYSICAL RESEARCH LETTERS, 2009, 36

[8] Vegetation dynamics amplifies precessional forcing [J].

Claussen, Martin ;

Fohlmeister, Jens ;

Ganopolski, Andrey ;

Brovkin, Victor .

GEOPHYSICAL RESEARCH LETTERS, 2006, 33 (09)

[9] Climate evolution during the Holocene: a study with an Earth system model of intermediate complexity [J].

Crucifix, M ;

Loutre, MF ;

Tulkens, P ;

Fichefet, T ;

Berger, A .

CLIMATE DYNAMICS, 2002, 19 (01) :43-60

[10] The temperature of Europe during the Holocene reconstructed from pollen data [J].

Davis, BAS ;

Brewer, S ;

Stevenson, AC ;

Guiot, J .

QUATERNARY SCIENCE REVIEWS, 2003, 22 (15-17) :1701-1716

← 1 2 3 →