The most commonly used method for representing lightning in global
atmospheric models generally predicts lightning increases in a warmer world.
Not exact matches
Most notably, the
models do not
generally react too sensitively to increases in
atmospheric carbon dioxide.
The water - world possibility has
generally been associated with «super-Earths» with a lot more mass and
atmospheric pressure than Earth, so the Earth - based
model has its limits.
For instance,
atmospheric models do not
generally produce realistic Quasi-Biennial Oscillations in the tropical lower stratosphere.
Interactive
atmospheric chemistry components are not
generally included in the
models used in this report.
Generally these
models are drawn from the weather forecasting community (at least for the
atmospheric components) which explains the odd terminology.
The term Earth System
Model is a little ambiguous with some people reserving that for
models that include a carbon cycle, and others (including me) using it more
generally to denote
models with more interactive components than used in more standard (AR4 - style) GCMs (i.e.
atmospheric chemistry, aerosols, ice sheets, dynamic vegetation etc.).