cloud drop—A spherical particle of liquid water, from a few micrometers to a few tens of micrometers diameter, formed by condensation of water vapor on a hygroscopic aerosol particle (cloud condensation nucleus).
Such drops, apparently suspended in the air with other drops, form a visible cloud. Clouds may also contain interstitial haze particles, smaller than a few micrometers (μm) in diameter. Activation distinguishes a cloud from a haze, which contains only or mainly unactivated droplets. Cloud drops differ in size from drizzle drops and raindrops. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this.
drizzle drop—A drop of water of diameter 0.2–0.5 mm (0.008–0.02 in.) falling usually (but not always) from low stratus or stratocumulus cloud.
Although this is the correct term for this size range, all water drops of diameter greater than 0.2 mm are frequently termed raindrops, as opposed to cloud drops. Should such drops reach the ground, they can be felt on the upturned face.
raindrop—A drop of water of diameter greater than 0.5 mm falling through the atmosphere.
In careful usage, falling drops with diameters between 0.2 and 0.5 mm are called drizzle drops rather than raindrops, but this distinction is frequently overlooked and all drops with diameters in excess of 0.2 mm are called raindrops. The limiting diameter of 0.2 mm is rather arbitrary, but has been employed because drops of this size fall rapidly enough (about 0.7 m s−1) to survive evaporative dissipation for a distance of the order of several hundred meters, the exact survival distance being a function of the relative humidity. Drops much smaller than this limiting size fall so slowly from most clouds that they evaporate before reaching the ground. Virga is almost always composed of drops with diameters just below the limiting size assigned to drizzle drops. Raindrops are very much larger than cloud drops. A typical raindrop might have a diameter of 1–2 mm, while a typical cloud drop diameter is of the order of 0.01–0.02 mm. Raindrops fall between 2 and 12 meters per second (depending on altitude); those larger than about 1 mm are increasingly deformed by airflow (with flatter bases), the largest raindrops having a height to width ratio of 1:2. Raindrops may form by coalescence of cloud drops or from melting ice precipitation. Any given rainfall is characterized by a certain drop-size distribution of its raindrops, and even within a given storm this distribution may change its characteristics. The largest drops observed in heavy thunderstorms may have equivalent spherical diameters of 5–8 mm. Raindrops of such large size are rare, but occasionally form in the warm rain process by accretion of cloud water or can result from melting hail.
As you can see, the biggest differentiating factor is size.
2007-05-02 07:04:36
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answer #1
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answered by millercommamatt 3
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Size. It takes up to a million cloud droplets to make a raindrop.
2007-05-02 12:02:39
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answer #2
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answered by tentofield 7
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Hail starts out as rain droplets. And on the way down, the rain freezes which varieties a small ice circle around the rain droplet. this might ensue many cases previously the rain or now hail hits the floor. Snow on the different hand is diverse. and isn't any longer shaped out of water droplets.
2016-10-04 06:38:53
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answer #3
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answered by ? 4
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A raindrop consists of many cloud droplets.
2007-05-02 06:32:21
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answer #4
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answered by Arasan 7
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I might be wrong:
cloud droplet is in the clouds layers in the sky and is invisible.
while raindrop is the droplets that is raining down.
2007-05-02 06:38:22
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answer #5
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answered by Jeremy N 3
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a cloud droplet is invisible and is fog like..a rain dtop i wet and more dense
2007-05-02 06:21:04
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answer #6
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answered by Anonymous
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It's the same thing.
2007-05-02 12:45:47
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answer #7
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answered by Anonymous
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absolutely nothing.
2007-05-02 06:21:25
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answer #8
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answered by achbar 1
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