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Seasonal variation of the global mixed layer depth: comparison between Argo data and FIO-ESM |
Yutong ZHANG1, Haiming XU1(), Fangli QIAO3, Changming DONG2() |
1. College of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China 2. College of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China 3. First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China |
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Abstract The present study evaluates a simulation of the global ocean mixed layer depth (MLD) using the First Institute of Oceanography-Earth System Model (FIO-ESM). The seasonal variation of the global MLD from the FIO-ESM simulation is compared to Argo observational data. The Argo data show that the global ocean MLD has a strong seasonal variation with a deep MLD in winter and a shallow MLD in summer, while the spring and fall seasons act as transitional periods. Overall, the FIO-ESM simulation accurately captures the seasonal variation in MLD in most areas. It exhibits a better performance during summer and fall than during winter and spring. The simulated MLD in the Southern Hemisphere is much closer to observations than that in the Northern Hemisphere. In general, the simulated MLD over the South Atlantic Ocean matches the observation best among the six areas. Additionally, the model slightly underestimates the MLD in parts of the North Atlantic Ocean, and slightly overestimates the MLD over the other ocean basins.
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Keywords
mixed layer depth
FIO-ESM model
seasonal variation
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Corresponding Author(s):
Haiming XU,Changming DONG
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Just Accepted Date: 16 March 2017
Online First Date: 06 April 2017
Issue Date: 23 January 2018
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