Journal
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
Volume 118, Issue 9, Pages 4514-4524Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/jgrc.20327
Keywords
Earth System Model; surface wave; model development
Categories
Funding
- National Basic Research Program of China (973 Program) [2010CB950300, 2010CB950500]
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The critical role of oceanic surface waves in climate system is attracting more and more attention. We set up an Earth System Model, which is named as the First Institute of Oceanography-Earth System Model (FIO-ESM), composed of a coupled physical climate model and a coupled carbon cycle model. A surface wave model is introduced through including the nonbreaking wave-induced vertical mixing, which can improve the performance of climate model especially in the simulation of upper ocean mixed layer depth in the southern ocean, into the ocean general circulation model. The FIO-ESM is employed to conduct Coupled Model Intercomparison Project Phase 5 (CMIP5) experiments. The historical simulation of FIO-ESM's physical climate model for 1850-2005 shows that the simulated patterns of surface air temperature (SAT), rainfall, and El Nino-Southern Oscillation (ENSO) match those of the observations. Future projections under the four scenarios of RCP2.6, RCP4.5, RCP6.0, and RCP8.5 are also conducted and the global averaged SAT in 2100 would be -0.007 degrees C, 1.10 degrees C, 1.85 degrees C, and 3.92 degrees C higher than that in 2005, respectively. The historical simulation and future projection under RCP8.5 with global carbon cycle show the SAT and atmospheric CO2 concentration are well reproduced in the historical period and the global averaged SAT would increase by 3.90 degrees C in 2100, which is quite similar to the physical climate model's result. Further analysis shows surface wave makes projected SAT in RCP2.6 about 2 degrees C cooler in the Arctic area and 2 degrees C warmer in the southern ocean.
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