The summer monsoon brings heavy rains and creates a moisture-rich atmosphere, while the winter monsoon generates long periods of dry and arid conditions. The summer monsoon generally begins in April and lasts through late September, while the winter monsoon arrives in October and ends in March. Rainfall produced during the summer monsoon can be very intense; flash floods and even crop damage are not uncommon in regions subject to the monsoon's effects.Continue Reading
The duration and conditions associated with both monsoons depend largely on the conditions over the Indian Ocean, where they form and the presence or absence of other atmospheric conditions. Generally, the end of winter brings warm and humid air from the southwestern part of the Indian Ocean; this air makes its way towards land, eventually settling over Southeast Asia.
The summer monsoon brings rain every day. Excessive atmospheric moisture and unusually warm air can create torrential, relentless rains that may devastate crop fields and wreak havoc in riverside communities and cities.
Winter monsoons arrive in October; they are characterized by dry air and cooler temperatures, offering rain-soaked regions a welcome relief from months of endless rains. Winter monsoons are usually less powerful than summer monsoons and may bring high winds in addition to drier air.Learn more about Rain
A convectional rainfall diagram gives a visual representation of the process through which atmosphere produces convectional rain. The diagram starts with warming land, which heats the air above it and causes the air to expand and rise. Clouds form and rain falls as the air condenses and cools.Full Answer >
According to About.com, there are many causes for drought, but the most important one "relates to the amount of water vapor in the atmosphere, as this is what creates precipitation." Moist, low pressure systems tend to bring more rain, snow, sleet and hail, while dry high pressure systems lead to a lack of precipitation.Full Answer >
Rain occurs through the process of coalescence, where a mass of water droplets gathers around cloud condensation nuclei to saturate the atmosphere and allow condensation and precipitation to take place. This process is driven by three primary lifting mechanisms that cause the upward movement of air.Full Answer >
Sleet is smaller and occurs during the winter, whereas hail is larger and happens during warmer months, according to AccuWeather. Both sleet and hail are frozen precipitation, but the two major differences revolve around size and timing. Hail is larger because strong updrafts in thunderstorms keep hail aloft longer. Sleet occurs when snow melts in the cloud and then freezes again in a lower layer to create small pellets.Full Answer >