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The list of cloud types groups all genera as high (cirro-, cirrus), middle (alto-), multi-level (nimbo-, cumulo-, cumulus), and low (strato-, stratus). These groupings are determined by the altitude level or levels in the troposphere at which each of the various cloud types is normally found.
Places where seawater and rainwater is pumped away are included. Fully natural places below sea level require a dry climate; otherwise, rain would exceed evaporation and fill the area. All figures are in meters below mean sea level (as locally defined), arranged by depth, lowest first:
Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds formed by rising thermals. The term stratus describes flat, hazy , featureless clouds at low altitudes varying in color from dark gray to nearly white. [ 2 ]
It is also North America's largest lake by volume, at 2,900 cu mi (12,000 km 3); it is commonly called the largest lake by surface area when Lake Michigan and Lake Huron are not considered one lake. Great Salt Lake , Utah , 41°10′N 112°35′W / 41.167°N 112.583°W / 41.167; -112.583 ( Great Salt Lake ) – most extensive ...
New Orleans, Louisiana, United States — lowest city of the Americas with an average elevation of −0.5 m (−1 Isthmus of Rivas , Rivas , Nicaragua 12°1′N 86°27′W / 12.017°N 86.450°W / 12.017; -86.450 ( Isthmus of Rivas ) — lowest pass between Caribbean Sea and Pacific Ocean (on the Continental Divide of the ...
Low-level clouds usually form below 2,000 m (6,500 ft) and do not have a prefix. [1] [66] The two genera that are strictly low-level are stratus, and stratocumulus. These clouds are composed of water droplets, except during winter when they are formed of supercooled water droplets or ice crystals if the temperature at cloud level is below ...
The low étage is found from surface up to 2,000 m (6,500 ft) at all latitudes. Principal cloud types found in the low levels of the troposphere include stratocumulus, stratus, and small fair weather cumulus. Several additional types usually form in the low or middle étages but typically extend into all three altitude levels as clouds with ...
This will give the altitude of the cloud base in feet above ground level. Put in a simpler way, 400 feet for every 1°C dew point spread. For metric divide the spread in °C by 8 and multiply by 1000 and get the cloud base in meters. Add the results from step (2) to the field elevation to obtain the altitude of the cloud base above mean sea level.