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What Improvements do Models Need to be More Accurate?
Interactions with other parts of the Earth system

Ocean models can also predict the amount of heat stored in the ocean, and the exchange of heat and moisture between the ocean and atmosphere. The oceans are an extremely important part of the climate system because of their enormous heat capacity. Researchers at CMMAP are trying to learn more about a huge storm system called the Madden Julian Oscillation (MJO), which occurs in the Indian and western Pacific Oceans, through the use of ocean and climate models.

Using both an ocean and atmosphere model sometimes results in a better simulation of the MJO. The coupling of the two models allows for two things to happen that are important in the creation and movement of the MJO:
  1. Areas of warm ocean water are able to ignite convection which eventually ends up as part of the MJO.
  2. The interactions between the ocean and atmosphere slow the MJO as it moves from west to east. Scientists are working to find out why it moves slower in coupled models.

The "super-parameterizations" utilized by CMMAP researchers also leads to a good representation of the MJO in climate models. Why this is the case is an area of active research.

Next page   -> improvements, continued

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