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Changes in Marine Fog Over the North Pacific Under Different Climates in CMIP5 Multimodel Simulations
Author(s) -
Kawai Hideaki,
Koshiro Tsuyoshi,
Endo Hirokazu,
Arakawa Osamu
Publication year - 2018
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
eISSN - 2169-8996
pISSN - 2169-897X
DOI - 10.1029/2018jd028899
Subject(s) - environmental science , climatology , coupled model intercomparison project , sea surface temperature , magnitude (astronomy) , climate model , atmosphere (unit) , oceanography , climate change , pacific decadal oscillation , boreal , geography , geology , meteorology , physics , astronomy , archaeology
In this study, the changes in the occurrence of marine fog over the summer North Pacific in warmer sea surface temperature (SST) or increased CO 2 climates were investigated based on atmospheric model simulations by using the fifth phase of the Climate Model Intercomparison Project (CMIP5) multimodel data. Initially, the marine fog representation in CMIP5 multimodels was briefly evaluated globally. We found that the simulated marine fog occurrence was represented relatively well in boreal summer but poorly in other seasons. The results indicated that the changes in the North Pacific high‐pressure system accompanied by changes in horizontal wind patterns control the changes in marine fog occurrence in the North Pacific. The magnitude of contrasting pair changes in marine fog occurrence in the western and eastern North Pacific are primarily determined by the magnitude of changes in the North Pacific high‐pressure system. Global‐scale changes in the vertical profiles of the atmosphere (stability changes) can also affect the marine fog changes. These changes in marine fog over the North Pacific were consistent among most CMIP5 models.