Smith, S.A., and A.D. Del Genio, 2001: Analysis of aircraft, radiosonde, and radar observations in
cirrus clouds observed during FIRE II: The interactions between environmental structure, turbulence, and cloud microphysical properties.
In contrast, an increase in the intensity of sub-tropical anticyclones
observed in ECHAM4 results from a tropospheric warming promoted by excessive
cirrus clouds attributed to a scale - dependent response in the relevant parametrization (Stendel and Roeckner, 1998).