Where it's from

Rain is liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated—that is, become heavy enough to fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the planet. It provides suitable conditions for many types of ecosystem, as well as water for hydroelectric power plants and crop irrigation.

Types of rain

Frontal rain

Frontal rain is when a cold front meets a warm air front. The less dense warm air rises and condenses forming clouds. These clouds get heavier and it eventually rains. The cold air front tends to come from the north west and the warm air front comes from the south west.

Types of rain

Relief rain

Relief rain usually happens along coastal areas where a line of hills runs along to the coast. When wet onshore wind from the sea meets a mountain, hill or any other sort of barrier, it is forced to rise along the slope and cools. When the air temperature falls to its dew point, water vapor condenses to form clouds. When the clouds can no longer hold the water droplets, relief rain begins to fall on the windward slope of the mountain. On the leeward slope, air sinks, it is warmed and further dried by compression. Therefore, the leeward slope is known as rain shadow. Moist winds blow in from the sea and are forced to rise over the land. The air cools and the water vapour condenses, forming rain drops. Relief rain is also a very dense and cold mixture of precipitation. As well as frontal rain, the UK is also affected by relief or orographic rain.

Types of rain

Convectional rain

Convectional rain happens in places of the world that are hot and wet. Sometimes, it also takes place in tropical deserts and  inland areas during summer, when temperatures are hot. During the day, the sun makes the ground very hot. Air near the ground surface is heated by conduction. The heated air expands, becoming less dense and rises in a strong upwards air current. When the temperature of the rising air falls to the dew point, water vapor shrinks into thick clouds and forms convection rain. Depending on the temperature it may fall as sleet or snow.

Why do we have rain?

                                        Why do we have rain? Because of sun's heat, the water is evaporated into air as vapors and currents takes water vapors up in atmosphere.
As these vapors rises in air, cooler temperatures cause it to condense into clouds.
Air currents move clouds around the globe, cloud particles collide, grow, and fall out of the sky as rain and snow.
This is how we get our rains.

Introduction

hi my name is haochen.li
thatz my blog on the geography of raining
Over the next few weeks I will write about:
Where it's from
different types of raining
Why do we have rain