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What Causes Rain and How to Observe It Better

 

Rain is an interesting phenomenon. It is created when clouds become too heavy and saturated. It is caused by water droplets falling to Earth. This article discusses rain formation, water droplets, and cloud types. It will help you understand the natural world better. If you want to know what causes rain, you can read about Virga clouds and the varying intensities of precipitation. Here, we will also discuss what causes rain and how we can observe it better.

Water droplets

Water droplets during rain have a fascinating effect on light. Light that reaches the droplets is refracted into the light that is inside. This process creates two arcs of color. One arc is red and the other is purple. These arcs are formed when light reflects within a water droplet. The resulting play of light is what makes rainbows. However, it is important to note that the smallest water droplets are not capable of producing rainbows.

A rainbow is an atmospheric optical phenomenon that occurs when sunlight reflects off many water droplets. This phenomenon occurs during rain, fog, and when the Sun hits the water. The sunlight is refracted inside each drop and turns it into a series of colored funnels. Orange, yellow, and green are all added to the red funnel, and so on. The colors are reflected in each drop and each one makes a complete rainbow.
Clouds

What is the origin of clouds? Clouds are accumulations of small water droplets in the Earth’s atmosphere. They can be wispy or bulky. Their shape and color depend on the amount of water vapor present, the temperatures at the top of the atmosphere, and the interplay of different air masses. Clouds appear white because they contain most of the light. Because clouds are formed by condensation of water vapor, all wavelengths of sunlight are combined and perceived as white. However, when rain comes, the water vapor in the clouds condenses into raindrops, and they become dark. During this time, visibility can be reduced to zero.

The three main types of clouds occur during rain. Stratus clouds form low-level, puffy, gray clouds that are often associated with rain and snow. Stratus clouds, on the other hand, are low-lying gray patches that usually contain a light coating. Although these clouds produce light to moderate amounts of precipitation, they rarely produce rain. While you might think that fog clouds are the most common kind of clouds, they do not produce rain.

Virga clouds

If you’ve ever seen radar images, you’ve probably seen stray green or blue areas floating over the landscape. Or maybe you’ve even seen wisps of cloud hanging in the air. These are all signs of virga clouds and rain. The phenomenon is common in the Middle East, Australia, and North Africa. Regardless of the cause, you’re sure to find it fascinating. In this article, you’ll learn more about virga clouds and rain.

Virga clouds form when the upper atmosphere has enough moisture for rain to fall, but not much else. This leads to microbursts, which are dangerous to aircraft. When rain falls, virga clouds transform into water vapour, which absorbs heat and cools the surrounding air. This causes dramatic turbulence in the sky. Virga clouds are also known as jellyfish clouds.
Precipitation intensities

Globally, there is a significant contrast in precipitation intensities (HPI) between ocean and land, despite similar atmospheric parameters. Land experiences higher HPI than ocean due to limited moisture availability over continental surfaces. But this contrast is not evident in the mid-latitudes. And coarse-resolution data do not reveal the intermittency of precipitation, which is better captured using hourly precipitation data. Moreover, climatological averaged HPIs are generally not reliable because they are not conditioned to wet hours and are not representative of the climate.

In a typical year, the amount of precipitable water can range from 60 mm over the equatorial oceans to zero in mountainous areas. Precipitation intensity varies considerably throughout the world, with the highest values being found in the equatorial Atlantic Ocean. In addition, the amount of moisture in the atmosphere is usually less than 60 mm at any given time. As a result, the contrast in precipitation intensity between oceanic and land-based systems may be due to multiple mechanisms.

Air movement

Weather conditions play an important role in determining when rain will fall. Rain is a result of the moisture in the air condensing and rising to the surface. The resulting cloud forms from this water vapor. When it rains, this water vapor combines with water vapor to produce precipitation. The rainy day is one of nature’s most beautiful phenomena. During the summer, rains tend to fall in the late afternoon and early evening.

The movement of air is caused by temperature and pressure differences. It moves from high to low pressure in a spiraling fashion. This is due to the rotation of the Earth beneath it. This rotation causes the wind to appear deflected as it moves across the ground. During rain, the wind feels a twisting sensation because of the Coriolis effect. This effect can be a good indicator of a change in the weather.
Acidity of rain

Acidity of rain is the result of a reaction between sulfur dioxide and nitrogen oxides in the atmosphere. As the concentration of these gases increases, they react with water molecules in the atmosphere to form a mild solution of sulfuric and nitric acid. This acidity is measured on a pH scale. It is the same chemical process that makes rain become acidic, except that the particles are much smaller. The National Geographic Video shows how acid rain travels.

The pollution caused by this process makes rain, sleet, and snow acidic. The lower pH levels of the rain harm many plant and animal species, and may even destroy marine habitats. Acid rain also causes a drastic decline in the population of amphibians and other creatures. Acid rain is a huge environmental issue and must be taken seriously. Thankfully, the problem is reversible. Luckily, there are several ways to minimize acidity in the environment.