The impact of urban thermal plumes will vary depending on a large variety of factors including the diameter and temperature gradient of the Urban heat island, the latitude, the thermal stability of the stratiform, the synoptic wind, & c.
42.
Warm fronts associated with extratropical cyclones tend to generate mostly cirriform and stratiform clouds over a wide area unless the approaching warm airmass is unstable, in which case cumulus congestus or cumulonimbus clouds will usually be embedded in the main precipitating cloud layer.
43.
The genus types are arranged from top to bottom in the same ascending order for each �tage . ( 1 ) = Stratiform types, ( 2 ) = Cirriform types, ( 3 ) = Stratocumuliform types, ( 4 ) = Cumuliform types, ( 5 ) = Cumulonimbiform types.
44.
Under Luke Howard's first systematized study of clouds, carried out in France in 1802, three general cloud " forms " were established based on appearance and characteristics of formation : " cirriform, " " cumiliform " and " stratiform ."
45.
It is now believed that many of the Schumann resonances transients ( Q bursts ) are related to the sprites, the most common TLE, are produced by positive cloud-to-ground lightning occurring in the stratiform region of a thunderstorm system, and are accompanied by Q-burst in the Schumann resonances band.
46.
In addition to these three main types, Howard added two names to designate multiple cloud types joined together : " cumulostratus, " a blending of cumulus clouds and stratus layers, and " nimbus, " a complex blending of cirriform, cumuliform, and stratiform clouds with sufficient vertical development to produce significant precipitation.
47.
There are three distinct ways that precipitation can occur . "'Convective "'precipitation is generally more intense, and of shorter duration, than "'stratiform "'precipitation . "'Orographic "'precipitation occurs when moist air is forced upwards over rising terrain, such as a mountain.
48.
These are, in approximate ascending order of instability or convective activity : " stratiform " sheets; " cirriform " wisps and patches; " stratocumuliform " patches, rolls, and ripples; " cumuliform " heaps and tufts, and " cumulonimbiform " towers that often have complex structures.
49.
VMS deposits have an ideal form of a conical area of highly altered volcanic or volcanogenic sedimentary rock within the feeder zone, which is called the "'stringer sulfide "'or "'stockwork "'zone, overlain by a mound of massive exhalites, and flanked by stratiform exhalative sulfides known as the "'apron " '.
50.
These physical types, in approximate ascending order of convective activity, include " stratiform " sheets, " cirriform " wisps and patches, " stratocumuliform " layers ( mainly structured as rolls, ripples, and patches ), " cumuliform " heaps and tufts, and very large " cumulonimbiform " heaps that often show complex structure.
