The most
significant changes in the new D - series cloud datasets are: 1) revised radiance calibrations to remove spurious changes in the long - term record, 2) increased cirrus detection sensitivity over land, 3) increased low - level cloud detection sensitivity in polar regions, 4) reduced biases in cirrus cloud properties using an ice crystal
microphysics model in place of a liquid droplet
microphysics model, and 5) increased detail about the variations of cloud properties.
Additionally, climatological models, which incorporate CCN generation mechanisms and cloud
microphysics, fail to produce
significant change in global - scale CCN populations, cloud optical properties, or radiative forcing (Snow - Kropla et al. 2011; Dunne et al. 2012; Kazil et al. 2012).