The positive Indian Ocean Dipole-like response in the tropical Indian Ocean to global warming
Abstract
Climate models project a positive Indian Ocean Dipole (pIOD)-like SST response in the tropical Indian Ocean to global warming. By employing the Community Earth System Model (CESM) and applying an overriding technique to its ocean component Parallel Ocean Program version 2 (POP2), this study investigates the similarity and difference of the formation mechanisms for the changes in the tropical Indian Ocean during the pIOD versus global warming. Results show that their formation processes and related seasonality are quite similar; in particular, the Bjerknes feedback is the leading mechanism in producing the anomalous cooling over the eastern tropics in both cases. Some differences are also found, including that the cooling effect of the vertical advection over the eastern tropical Indian Ocean is dominated by the anomalous vertical velocity during the pIOD while it is dominated by the anomalous upper-ocean stratification under global warming. Lastly, these findings above are further examined with an analysis of the mixed layer heat budget.
- Authors:
-
- Ocean Univ. of China, Qingdao (China)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1255384
- Report Number(s):
- PNNL-SA-108666
Journal ID: ISSN 0256-1530; KP1703010
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advances in Atmospheric Sciences
- Additional Journal Information:
- Journal Volume: 33; Journal Issue: 4; Journal ID: ISSN 0256-1530
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; Indian Ocean dipole; positive Indian Ocean dipole-like response; global warming; Bjerknes feedback
Citation Formats
Luo, Yiyong, Lu, Jian, Liu, Fukai, and Wan, Xiuquan. The positive Indian Ocean Dipole-like response in the tropical Indian Ocean to global warming. United States: N. p., 2016.
Web. doi:10.1007/s00376-015-5027-5.
Luo, Yiyong, Lu, Jian, Liu, Fukai, & Wan, Xiuquan. The positive Indian Ocean Dipole-like response in the tropical Indian Ocean to global warming. United States. https://doi.org/10.1007/s00376-015-5027-5
Luo, Yiyong, Lu, Jian, Liu, Fukai, and Wan, Xiuquan. Thu .
"The positive Indian Ocean Dipole-like response in the tropical Indian Ocean to global warming". United States. https://doi.org/10.1007/s00376-015-5027-5. https://www.osti.gov/servlets/purl/1255384.
@article{osti_1255384,
title = {The positive Indian Ocean Dipole-like response in the tropical Indian Ocean to global warming},
author = {Luo, Yiyong and Lu, Jian and Liu, Fukai and Wan, Xiuquan},
abstractNote = {Climate models project a positive Indian Ocean Dipole (pIOD)-like SST response in the tropical Indian Ocean to global warming. By employing the Community Earth System Model (CESM) and applying an overriding technique to its ocean component Parallel Ocean Program version 2 (POP2), this study investigates the similarity and difference of the formation mechanisms for the changes in the tropical Indian Ocean during the pIOD versus global warming. Results show that their formation processes and related seasonality are quite similar; in particular, the Bjerknes feedback is the leading mechanism in producing the anomalous cooling over the eastern tropics in both cases. Some differences are also found, including that the cooling effect of the vertical advection over the eastern tropical Indian Ocean is dominated by the anomalous vertical velocity during the pIOD while it is dominated by the anomalous upper-ocean stratification under global warming. Lastly, these findings above are further examined with an analysis of the mixed layer heat budget.},
doi = {10.1007/s00376-015-5027-5},
journal = {Advances in Atmospheric Sciences},
number = 4,
volume = 33,
place = {United States},
year = {Thu Feb 04 00:00:00 EST 2016},
month = {Thu Feb 04 00:00:00 EST 2016}
}
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Works referencing / citing this record:
Uncertainty in Indian Ocean Dipole response to global warming: the role of internal variability
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Indo-Pacific Climate Modes in Warming Climate: Consensus and Uncertainty Across Model Projections
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