Rain Drop
what determines the size of a rain drop?
other than the obvious (more water). why does rain vary from a mist to large, heavy rain. and why can this happen so rapidly during the Arizona monsoon
The size of a raindrop when it falls to the ground is dependent on many factors, including the origination process of the rain itself, rainfall intensity, evaporation rates, air turbulence, and wind.
The processes that allow cloud droplets to become raindrops are very complex and not well understood. Droplets that reach 0.2 mm, the threshold for calling a drop rain, are usually heavy enough to overcome the force of ascending air that exists in every cloud. Rain can be either “cold rain”, originating from melting snowflakes, or “warm rain”, which evolves without the snowflakes. Cold rain has very large drops, but fewer drops overall. Warm rain contains very many, but small drops. Raindrops can range in size from 0.2 mm in diameter, to around 6 mm. Those larger than 6 mm are inevitably broken up in their fall to the earth. Raindrops are very rarely all the same size in any one rain. There are generally more small drops than large drops, but as the intensity of the rainfall increases, the number of larger drops grows. The very largest drops are found only in downpours with rainfall rates greater than 2 inches per hour.
Once a raindrop has formed and begun to fall, evaporation of water from the droplet may reduce its size, and turbulence in the air may induce further collisions and breakups either enlarging or reducing the raindrop’s size. Wind can separate the drops according to size, with the larger ones falling to the ground faster, while the smaller ones are blown with the wind or the raindrops may get caught in updrafts or downdrafts within the cloud.
The path a droplet takes on its way to becoming a raindrop on the ground is a very complex one, with literally hundreds of possible outcomes. An interesting book about raindrops is From Raindrops to Volcanoes by Duncan Blanchard. It is no longer in print, but is available in many libraries.
cheers
ritu
IU – Rain Drops (Eng + Rom lyrics)
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Monsoon Rains and Icicle Drops – Libby Southwell – Used; Good – Paperback £2.99 |
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East German NVA RAIN DROP Camouflage Uniform COAT Jacket for TANK Crew £12.97 |
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3D rain drop point cover DIAMOND star Fr apple iphone 4 4s 4g case black UK £5.39 |
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Shires 400g Heavy Heavyweight Snug Stable Rug. Brand New. £35.00 |
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Shires 400g Heavy Heavyweight Snug Stable Rug. Brand New. £35.00 |
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23×12~5mm Red Garnet Ruby Rain Drop 18K White Gold Plated Dainty Stud Earrings £1.24 |
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Mother care trenton buggy with cozy toes and rain cover(drop off upto 65 miles) £100.00 |
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6×10~4mm Green Emerald Fine Topaz Rain Drop 18K Yellow Gold Plated Stud Earrings £0.99 |
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6×10~4mm Green Emerald Fine Topaz Rain Drop 18K White Gold Plated Stud Earrings £0.99 |
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6×10~4mm Green Emerald Fine Topaz Rain Drop 18K Yellow Gold Plated Stud Earrings £0.99 |
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2x8mm Black Sapphire 18K Yellow Gold Plated Dainty Rain Drop Dangle Earrings £0.99 |
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~~ 6×10~4mm Orchid Red Ruby Topaz Rain Drop 18K Yellow Gold Plated Stud Earrings £0.99 |
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Fly Racing Rain Drop Jacket Black Sm Small Womens £51.22 |
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Fly Racing Rain Drop Jacket Black Lg Large Womens £51.22 |
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Fly Racing Rain Drop Jacket Black Md Medium Womens £51.22 |
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Fly Racing Rain Drop Jacket Black XL XLarge Womens £51.22 |
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Endon Lighting Rain Drop Outdoor Wall Lantern in Matt Black YG-0921 £45.12 |
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2x7mm Royal Blue Sapphire 18K White Gold Plated Dainty Rain Drop Dangle Earrings £0.99 |
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3D RAIN DROP DESIGN HARD CASE FOR HTC SENSATION + STYLUS & SCREEN PROTECTOR £3.90 |
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3D RAIN DROP DESIGN HARD CASE FOR HTC SENSATION + STYLUS & SCREEN PROTECTOR £3.90 |
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3D RAIN DROP DESIGN HARD CASE COVER FOR HTC SENSATION + SCREEN PROTECTOR £2.90 |
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3D RAIN DROP DESIGN HARD CASE COVER FOR HTC SENSATION + SCREEN PROTECTOR £2.90 |
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3D RAIN DROP DESIGN HARD CASE FOR HTC DESIRE HD + STYLUS & SCREEN PROTECTOR £3.90 |
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3D RAIN DROP DESIGN HARD CASE FOR HTC DESIRE HD + STYLUS & SCREEN PROTECTOR £3.90 |
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3D RAIN DROP DESIGN HARD CASE FOR HTC DESIRE HD + STYLUS & SCREEN PROTECTOR £3.90 |
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3D RAIN DROP DESIGN HARD CASE FOR HTC DESIRE HD + STYLUS & SCREEN PROTECTOR £3.90 |
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~~ 23×12~5mm Royal Blue Sapphire Rain Drop 18K White Gold Plated Stud Earrings £1.24 |
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Rain drop Necklace £0.99 |
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~~ 23×12~5mm Green Emerald Rain Drop 18K White Gold Plated Dainty Stud Earrings £0.99 |
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RADIANT RAIN SHIMMERING MIST SPRAY LEMON DROP £2.25 |
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6×10~4mm Swiss Blue Sapphire Topaz Rain Drop 18K Yellow Gold Plated Stud Earring £0.99 |
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HOT PINK HARD BACK RAIN DROP CASE FOR APPLE IPHONE 3GS £2.85 |
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~~ 7×18~6mm Red Garnet Ruby Rain Drop 18K Yellow Gold Plated Brooch Bin £0.99 |
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6×10~4mm Green Emerald Fine Topaz Rain Drop 18K White Gold Plated Stud Earrings £0.99 |
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~~ 6×10~4mm Purple Amethyst Topaz Rain Drop 18K Yellow Gold Plated Stud Earrings £0.99 |
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~~ 7×18~6mm White Created Diamond Rain Drop 18K White Gold Plated Brooch Bin £0.99 |
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36x17mm White Austria Crystal Topaz Rain Drop Pendant £0.99 |
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Ladies/ Womens Gola by Tado Summer/ Holiday Flip Flops £12.99 |
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Ladies/ Womens Gola by Tado Summer/ Holiday Flip Flops £12.99 |
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Ladies/ Womens Gola by Tado Summer/ Holiday Flip Flops £12.99 |
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Ladies/ Womens Gola by Tado Summer/ Holiday Flip Flops £12.99 |
Tags: drop, flash, rain, rain drops keep falling on my head lyrics, raindrop therapy, raindrops, raindrops on roses, raindrops wallpapers, tutorial, water