We have developed a one-dimensional radiative-convective model with detailed cloud microphysics, and used it to study the formation of Arctic Stratus clouds (ASC). The model contains detailed radiative and microphysical modules, and it provides a self-consistent treatment of the interaction between radiative and cloud microphysical processes important for cloud formation. The radiative transfer...

Recent cloud-resolving numerical modeling results suggest that radiative forcing causes accelerated rates of tropical cyclogenesis and early intensification. Furthermore, observational studies of tropical cyclones have found that oscillations of the cloud canopy areal extent often occur that are clearly related to the solar diurnal cycle. A theory is put forward to explain these findings. The p...

We use I-band imaging to perform a variability survey of the 13-Myr-old cluster h Per. We find a significant fraction of the cluster members to be variable. Most importantly, we find that variable members lie almost entirely on the convective side of the gap in the cluster sequence between fully convective stars and those which have a radiative core. This result is consistent with a scenario in...

We evaluate the logarithmic derivative of the depth of the solar convective zone with respect to the logarithm of the radiative opacity, ∂ lnRCZ/∂ lnκ. We use this expression to show that the radiative opacity near the base of the solar convective zone (CZ) must be known to an accuracy of±0.6% in order to calculate the CZ depth to the accuracy of the helioseismological measurement, RCZ = (0.713...

Abstract Syukoro (Suki) Manabe’s Nobel Prize in Physics was awarded largely for his early work on one-dimensional models of “radiative–convective equilibrium” (RCE), which produced the first credible estimates Earth’s climate sensitivity. This article reviews that and tries to identify those aspects make it so distinctive. We argue model RCE contained three crucial ingredients. These are (i) a ...

If tropical tropopause cirrus lie above convective anvils with tops above about 13km, then net radiative cooling from the cirrus can be produced that is large enough to offset significant subsidence heating, even at the lowest temperatures observed in the tropics. Cirrus clouds near the tropopause are strongly heated by radiation unless they lie above convective anvil clouds. Radiative relaxati...

The asymptotic representation of linear, isentropic, low-frequency g+-modes in spherically symmetric stars developedbySmeyers et al. (1995) is extended tomore realistic stellar models composed of a convective core in adiabatic equilibrium and a radiative envelope. Bymeans of a boundary-layermethod, it is taken into account that the transition from the convective core to the radiative envelope i...

We have investigated the sensitivity of the intensity of convective activity and atmospheric radiative cooling to radiatively thick upper-tropospheric clouds using a new version of the Colorado State University General Circulation Model. The model includes a bulk cloud microphysics scheme to predict the formation of cloud water, cloud ice, rain, and snow. The cloud optical properties are intera...