Long term trends in global sea level under IPCC SRES A2 scenario

CHEN Changlin; ZUO Juncheng; DU Ling; HE Qianqian

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CHEN Changlin, ZUO Juncheng, DU Ling, HE Qianqian. Long term trends in global sea level under IPCC SRES A2 scenario[J]. Haiyang Xuebao, 2012, 34(1): 29-38.

Citation:

CHEN Changlin, ZUO Juncheng, DU Ling, HE Qianqian. Long term trends in global sea level under IPCC SRES A2 scenario[J]. Haiyang Xuebao, 2012, 34(1): 29-38.

CHEN Changlin, ZUO Juncheng, DU Ling, HE Qianqian. Long term trends in global sea level under IPCC SRES A2 scenario[J]. Haiyang Xuebao, 2012, 34(1): 29-38.

Citation:

CHEN Changlin, ZUO Juncheng, DU Ling, HE Qianqian. Long term trends in global sea level under IPCC SRES A2 scenario[J]. Haiyang Xuebao, 2012, 34(1): 29-38.

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Long term trends in global sea level under IPCC SRES A2 scenario

1.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
2.
College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
3.
College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266003, China
4.
HYDROCHINA Huadong Engineering Corporation, Hangzhou 310014, China

Received Date: 2010-08-31
Rev Recd Date: 2011-08-14

Abstract

Abstract

Based on CCSM3 (Community Climate System Model version 3) model, the long-term sea level trends of global ocean in the 20th and 21st century under IPCC SRES A2 scenario (IPCC, 2001) are analyzed in this paper. The result shows that global sea level rises about 4.0 cm during 20th century through steric expansion, with an acceleration of 0.004 8 mm/a²; eustatic changes are not included in this simulation. CCSM3 simulation also shows that in the 21st century sea level will rise in acceleration; the global sea level will rise 30 cm during the whole century through steric expansion. The vertical distribution of thermosteric and halosteric anomalies that contribute to sea level change is very different between ocean basins. Significant warming of the North Atlantic Ocean can extend to 2 500 m depth, while the salinity change partially counteracts sea level rise due to this warming. The steric anomalies in the Pacific Ocean occur mainly in the upper 700 m. In the Southern Ocean, steric change can extend to the entire water column.
- sea level change,
- long tem trend,
- CCSM3,
- IPCC SRES A2 scenario,
- steric

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