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World Weather Map

World weather chart indicates the average temperatures and average rainy days of some of the major cities of the world. This world weather chart gives an overview about the temperature variations in any particular month across the globe. This chart also shows the cities with maximum rainy days.

According to this chart Montreal, Canada with a temperature of -11°C was the coldest city in January. Kuala Lumpur, Malaysia and Singapore city, Singapore at 27°C were the warmest city. The maximum temperature as per this world weather chart was 31°C in Karachi, Pakistan and in Jeddah, Saudi Arabia. The minimum temperature recorded was -11°C in Montreal, Canada.

Hong Kong, China in the month of April receives rains for 25 days. As per the world weather chart, December was the most humid month and May was the least humid month of the year. With a maximum temperature of 27°C and a minimum of -11°C, the month of January saw the maximum variation.

World Weather Maps

A weather map is a type of map that represents the meteorological elements at a given point of time over an extended area on the surface of the globe. The credit for establishing the weather map as the basis for weather forecasting goes to the British meteorologist Alexander Buchan.

In 1868 Buchan initiated this practice by tracing on a map the path of a cyclonic storm across the North American land mass and over the Atlantic Ocean into northern Europe. This adoption of the weather map as a tool for analysis and forecasting in fact heralded the beginnings of modern meteorology.

In later years the synoptic weather map that was such a vital tool of the 19th-century meteorologists expanded into the world weather map that is increasingly being used in weather stations and on television weather reports across the globe.

Ideally, the World weather map shows on a global scale the distribution of surface isobars or lines of constant pressure; and the location of fronts and severe weather areas such as hurricanes, cyclones, and other storms. At different locations of the map such characteristics are indicated as wind direction and speed; air temperature and dew point; barometric pressure changes; cloud formations; the type of weather; visibility levels; and precipitation patterns.

Nowadays, satellite imagery is being increasingly used to produce world weather map especially to represent such features as the formation and distribution of clouds,and thereby making them a valuable tool for global weather forecasting.

The term "weather" refers to the atmospheric conditions prevailing on the Earth. Most of this turbulence is closer to the surface only, a region scientifically known as the troposphere. There are many components of what we perceive as weather, including temperature, pressure, wind speed, humidity, and others. Depending on what type of weather largely persists over long periods of time, the Earth is divided into different climate zones.

What causes weather
Weather results from the combined effect of different parameters in the atmosphere. Largely, it is attributed to temperature and moisture (pressure) differences, which themselves can have several different causes together resulting in their variation. For instance, sunlight is straight and therefore plenty in the tropics, which is why they feature extremely hot summers. But the resulting pressure void also brings much rainfall.

Places are affected by their altitudes also. The higher one goes, the colder it becomes and starts to snow. Then there are different types of winds and storms that keep blowing regularly on the surface of the Earth.

Predicting the weather
The metrological department (the "met") does the difficult task of weather forecasting.
Weather Map
It's difficult because first of all one needs to input tremendous amount of data from a large number of points on the Earth. This data is then analyzed for possible patterns and correlations are worked out depending on last year's data for the same time.

Impressive as it sounds, everyone knows how futile all efforts at weather forecasting have been. This is because the weather is an extremely complex system that may require computing power and analysis methods we may never be able to develop. Also, small changes in weather in one place have a ripple effect, causing unforeseen, large-scale changes. This is known as the "butterfly effect" popularly.

More Information on Weather

Last Updated Date: August 03, 2016

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