![]() ![]() Seeding of warm-season or tropical cumulonimbus (convective) clouds seeks to exploit the latent heat released by freezing. This process is known as "static" seeding. If sufficient growth takes place, the particles become heavy enough to fall as precipitation from clouds that otherwise would produce no precipitation. The formation of ice particles in supercooled clouds allows those particles to grow at the expense of liquid droplets. In mid-altitude clouds, the usual seeding strategy has been based on the fact that the equilibrium vapor pressure is lower over ice than over water. Introduction of a substance such as silver iodide, which has a crystalline structure similar to that of ice, will induce freezing nucleation. When cloud seeding, increased snowfall takes place when temperatures within the clouds are between −20 and −7 ☌. After promising research, the use of hygroscopic materials, such as table salt, is becoming more popular. This can produce ice crystals at higher temperatures than silver iodide. Liquid propane, which expands into a gas, has also been used. The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Methodologies Salts Ground Based Silver Iodide Generator - Colorado, US Its effectiveness is debated some studies have suggested that it is "difficult to show clearly that cloud seeding has a very large effect." The usual objective is to increase precipitation (rain or snow), either for its own sake or to prevent precipitation from occurring in days afterward. Ĭloud seeding is a type of weather modification that aims to change the amount or type of precipitation that falls from clouds by dispersing substances into the air that serve as cloud condensation or ice nuclei, which alter the microphysical processes within the cloud. The process shown in the upper-right is what is happening in the cloud and the process of condensation upon the introduced material. ( January 2021)Ĭloud seeding can be done by ground generators, planes, or rockets This image explaining cloud seeding shows a substance - either silver iodide or dry ice - being dumped onto the cloud, which then becomes a rain shower. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. Get to know the Beaufort Wind Force Scale and discover the most famous winds in the world.Ĭonsider buying a good anemometer, and always play it safe.This article's lead section may be too short to adequately summarize the key points. Studying the global weather scenario is the first step to the most enjoyable kiteboarding session of your life. Moderate vertical clouds are grey-to-black clouds and tell us that rain is coming associated with fair weather. They are a sign of light rain or drizzle. Low clouds are lumpy and usually appear in slightly unstable air conditions. Middle clouds may bring precipitation and tell you there's a little weather instability at medium altitude (2-7 kilometers or 6,500-2,300 feet). If you spot a large amount of these clouds, that's because an approaching storm system is coming. High clouds form at high altitudes and tend to be gentle, wispy, and transparent. There are ten different types of clouds, and are defined by altitude range: ![]() Update your real-time wind information by taking a glance at these signs every 15 minutes. The goal is to enjoy, not put your life at risk.ĭarker clouds or storm clouds usually change the direction and intensity of wind flags' behavior. Wind can throw you 40 feet up in the air without letting you know.Īccidents like these happen every week, in every corner of the world, by novice and experienced kiteboarders. If you spot one or a group of black clouds, then you should probably wait or quit the session if you're already riding.īlack clouds carry rain and very harsh winds that will overpower your kite. Black Clouds? Don't Fly a Kiteīlack clouds are a warning sign. We also know what's unsuitable for kiteboarding - strong and unstable wind gusts, walls, buildings, electricity wires, and general wind turbulence. Normally, your eyes can reach very far away.įrom where you're about to hit the water, it's possible to get a circular view of dozens of miles. They often tell us how the weather is at the moment, but also what can be heading our way. Kiteboarding demands an intelligent approach to clouds. The analysis of winds and global weather conditions before a kiteboarding session is a paramount safety procedure.īefore preparing your gear and launching the kite, spare a few minutes assessing the sky and its clouds. ![]()
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