Today is Rainy weather so i decided to wrote about whether...

One of the first things you probably do every morning is look out the window to see what the weather is like... good weather make your mood happy and pleasant...

A rainy day might make you think about visiting a museum or staying home to maked tea and fries or visiting cafeteri with friends ...

Affects of weather

The weather affects us in many ways. Day-to-day changes in weather can influence how we feel and the way we look at the world.

The term “weather” refers to the temporary conditions of the atmosphere, the layer of air that surrounds the Earth. We usually think of weather in terms of the state of the atmosphere in our own part of the world. But weather works like dropping a pebble in water—the ripples eventually affect water far away from where the pebble was dropped. The same happens with weather around the globe. Weather in your region will eventually affect the weather hundreds or thousands of kilometers away.

What Makes Weather

There are six main components, or parts, of weather. They are temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness. Together, these components describe the weather at any given time. These changing components, along with the knowledge of atmospheric processes, help meteorologists—scientists who study weather—forecast what the weather will be in the near future.

Temperature is measured with a thermometer and refers to how hot or cold the atmosphere is. Meteorologists report temperature two ways: in Celsius (C) and Fahrenheit (F). The United States uses the Fahrenheit system; in other parts of the world, Celsius is used. Almost all scientists measure temperature using the Celsius scale.

Temperature is a relative measurement. An afternoon at 70 degrees Fahrenheit, for example, would seem cool after several days of 95 degrees Fahrenheit, but it would seem warm after temperatures around 32 degrees Fahrenheit. The coldest weather usually happens near the poles, while the warmest weather usually happens near the Equator.

Atmospheric pressure is the weight of the atmosphere overhead. Changes in atmospheric pressure signal shifts in the weather. A high-pressure system usually brings cool temperatures and clear skies. A low-pressure system can bring warmer weather, storms, and rain.

Meteorologists express atmospheric pressure in a unit of measurement called an atmosphere. Atmospheres are measured in millibars or inches of mercury. Average atmospheric pressure at sea level is about one atmosphere (about 1,013 millibars, or 29.9 inches). An average low-pressure system, or cyclone, measures about 995 millibars (29.4 inches). A typical high-pressure system, or anticyclone, usually reaches 1,030 millibars (30.4 inches). The word “cyclone” refers to air that rotates in a circle, like a wheel.

Wind

Wind can be influenced by human activity. Chicago, Illinois, is nicknamed the “Windy City.” After the Great Chicago Fire of 1871 destroyed the city, city planners rebuilt it using a grid system. This created wind tunnels. Winds are forced into narrow channels, picking up speed and strength. The Windy City is a result of natural and manmade winds.

Weather Satellites

A new era in weather forecasting began on April 1, 1960, when the first weather satellite, TIROS-1, went into orbit. TIROS-1, which stands for Television Infrared Observation Satellite, was launched by NASA from Cape Canaveral, Florida. TIROS-1 was mostly an orbiting television camera, recording and sending back images. It gave meteorologists their first detailed look at clouds from above. With images from TIROS-1, they could track hurricanes and other cyclones moving across the globe.

Since then, meteorologists have depended on weather satellites for the most up-to-date and reliable information on weather patterns. Some satellites have geostationary orbits, meaning they stay in the same spot and move at the speed the Earth rotates. Geostationary satellites track the weather over one region. Other satellites orbit the Earth every 12 hours. These satellites can trace weather patterns, such as hurricanes, over the entire part of the globe they orbit.

Weather satellites can give more than just information about clouds and wind speeds. Satellites can see fires, volcanoes, city lights, dust storms, the effects of pollution, boundaries of ocean currents, and other environmental information. Up

Although weather forecasts have become more reliable, there is still a need for greater accuracy. Better forecasts could save industries across the world many billions of dollars each year. Farmers and engineers, in particular, would benefit.

Better frost predictions, for example, could save U.S. citrus growers millions of dollars each year. Citrus fruits such as oranges are very vulnerable to frost—they die in cold, wet weather. With more accurate frost forecasts, citrus farmers could plant when they know the new, tender seedlings wouldn’t be killed by frost. More accurate rain forecasts would enable farmers to plan timely irrigation schedules and avoid floods.

Imperfect weather forecasts cause construction companies to lose both time and money. A construction foreman might call his crew in to work only to have it rain, when the crew can’t work. An unexpected cold spell could ruin a freshly poured concrete foundation.

Outdoor activities..

Outdoor activities, such as concerts or sporting events, could be planned with greater accuracy. Sports teams and musicians would not have to reschedule, and fans would not be inconvenienced.

Power companies would also benefit from accurate forecasts. They adjust their systems when they expect extreme temperatures, because people will use their furnaces and air conditioning more on these days. If the forecast predicts a hot, humid day and it turns out to be mild, the power company loses money. The extra electricity or gas it bought doesn’t get used.

Small business...

Small businesses, too, would benefit from a better forecast. An ice cream store owner, for example, could save her advertising funds for some time in the future if she knew the coming weekend was going to be cool and rainy.

Responding to such needs, meteorologists are working to develop new tools and new methods that will improve their ability to forecast the weather..the weather..