Global distribution of tropical deep convective cloud fractions, see publications 1 and 2:

    Vergleich der Wolkensignaturen
    Figure 2: The distribution of the deep convective cloud fractions in the tropics detected from HIRS and AMSU-B in July 2001. (a) HIRS T11 < 215 K (IR method 1), (b) HIRS T11 < 215 K and Delta T < 1 K, (c) the AMSU-B method, (d) overestimation ov deep convection detected by IR method 1 with respect to thosse detectd by the AMSU-B method.