2017年11月30日 · 2.02.2.4.2 Stratus cloud systems. Stratus clouds are associated with mesoscale, or even synoptic, vertical air motions that arise from large-scale horizontal convergence and frontal or orographic lifting of moist air masses. The ascending motion of air is weak (i.e., a few tens of centimeters per second) relative to cumulus convection, but it ...

Stratocumulus and stratus clouds (Figures 14 and 15, respectively) are low-based (below 2 km AGL), shallow ‘stratiform’ clouds. They are almost always less than 1 km thick. They are composed of droplets unless the cloud top is cooler than about −5 to −10 °C in which case ice crystals may form.

Stratus and stratocumulus clouds are two dominant types of low stratiform cloud that together cover 30% of the Earth's surface. Both are thin boundary layer clouds that frequently occur as the sole cloud type under conditions of large-scale subsidence and strong lower-tropospheric static stability, but they can also exist mixed with higher ...

2024年12月1日 · Fog and low stratus (FLS) are of significant importance for many aspects of human life, such as seriously affecting land, sea, and air traffic safety by reducing visibility, acting as a modifier in the global climate system by changing the atmospheric radiation balance, and having ecological importance as the main water source of coastal deserts and tropical cloud …

2014年1月1日 · This type of cloud is often very similar to stratus in that it is a low overhanging blanket of cloud. It is distinguishable from stratus in that it has clearly identifiable elements. In the example of Figure 1.9 a, the elements are in the form of long lines or tessellations.

Nimbostratus clouds are deep clouds that produce substantial rain or snow due to their vertical extent, distinguishing them from shallower cloud types like stratus and stratocumulus. They are often associated with organized storm systems and can occur in both midlatitudes and tropics. AI generated definition based on: International Geophysics, 2014

2019年11月15日 · Thus, deficient marine stratus clouds in SEP were suspected to be among factors responsible for the warm SST biases in the region, and therefore a contributing factor to the double ITCZ problem. Ma et al. (1996) investigated this notion by prescribing a stratus cloud cover, constant in time, off the Peruvian coast in a CGCM. They found that ...

2000年7月1日 · Cloud microphysical and bulk cloud water chemical sampling was conducted from a 10-m tower at night, to avoid ground-induced heating and cloud dissipation and to minimize contamination from vehicular traffic (Borys et al., 1998). The droplet size distribution was obtained from a PMS Forward Scattering Spectrometer Probe (FSSP-100HV) optical sensor.

1993年6月1日 · Some water-insoluble residues are detected in cloud droplets. This result implies that water-insoluble particles found as the residues had wetting angles close to 0(Pruppacher and Klett, 1978 ). DISCUSSION Most of the residue masses m cloud droplets collected near the stratus cloud base would have acted as cloud condensation nuclei.

2008年3月1日 · Only a well-defined range of droplet radii and cloud optical depths are encountered in fog and low stratus. Unfortunately, some combinations of microphysical properties are encountered in both, fog/low stratus and other cloud types. Therefore, microphysical properties cannot be used as sole indicators of fog presence.