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An image satellite weather forecasters use during the analysis state? Basically, meteorologists are constantly monitoring satellite data and using it to make forecasts.
Each specialist needs to process and customize the satellite pictures. What do they make of this satellite imagery?
This image satellite weather technology has been around a while. Over the last 60 years or so, it has become crucial to weather forecasting.
With advancements in technology over the years, the number of possible uses has also increased. We can use one of these satellite images to get planet temperatures, humidity pictures, cloud pictures, and even wind data.
With the derived data, we can identify long-term trends and make short-term weather predictions with a lot more precision. There are a lot of other uses for satellite technology. Satellite pics give us a better perspective on air pollution, for example. Read on for the other type of weather satellite.
Large scale satellite weather photography has become important for pilots flying into areas with sparse surface and radiosonde weather data. Photographs can also give them more of the information they need.
What was the first weather satellite? Tiros-1 was launched in 1960, in the USA. We're now used to a world monitored by five geostationary and four polar-orbiting satellites.
That was brief. But what is Tiros?
TIROS (TV Infra-Red Observation Satellite) comes with cameras and other high-tech weather equipment like radiometers, sounders and data collection systems. High Resolution Picture Transmission (HRPT) images can be quite amazing when viewed on receivers that can see the satellite.
What does that mean? It is possible to engineer satellites to fly with the perfect combination of acceleration, speed, velocity, and height so that they stay over the same spot on the rotating earth. Geostationary means just that.
For this to work, it has to be over the equator. Due to its high altitude, around around 22,000 miles or 36,000 km, we can get good equator maps and clouds over most of the earth, with the exception of the poles. Keeping its position requires a constant speed nearly 7,000 miles per hour or 11,000 km per hour relative to the earth's axis.
Every 15 minutes, we get a fresh image satellite weather snapshot with varying energy-frequency-wavelength values. They're great for creating loops and animating satellite photos.
Five geostationary satellites let us see the whole planet between 60°N and 60°S. They linger above the equator at 75°W, 135°W, 140°E, 70°E and about 0°, the prime meridian. And if one of the satellites fails, the others can reposition themselves to compensate until it starts working again.
Each vehicle weighs nearly half a ton and rotates rapidly while the cameras are held steady. They collect energy from sunlight through solar panels. These engineers thought of everything.
Satellite instruments take infrared and visible light photos, plus a bunch of other stuff. Using a telescope on board, we can get high-resolution pictures of the earth.
Data is then sent to the ground through onboard transmitters, where computers overlay geographical maps for easier reference. A satellite then distributes the completed image to forecast centers, TV stations
Even though it's not perfect, the whole system is pretty reliable. Are you familiar with these systems? I would appreciate if you could inform my readers.
Know a better place for forecasts? Really cool graphics or outstanding weather information?
All weather people like to find new places for unusual data, and here's your chance to help. Feel free to comment; that would be much appreciated. Thank you.
P.S. This is NOT the Weather Network.
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For practical purposes, we have to make a trade-off here. Satellites at high altitude can see a lot of area at once, but their resolution isn't great.
Polar orbiting satellites fly at much lower altitudes and can see much closer. They have to move across the earth to get a broader image satellite weather because their pictures aren't as wide.
These satellites race from the North Pole to South Pole and back in less than two hours, at only 500 miles (800 km) up. Each one then moves over and takes a picture of the next strip of earth, following the meridians like the lines on a pumpkin. And it keeps going with all that speed in a vessel weighing about 3/4 ton.
Each satellite's orbit stays fixed relative to the sun so that it always makes its northbound journey near noon on the ground directly below. This means every location on earth gets its photo at roughly the same time every day. This time-coordinated quality is called sun-synchronous.
The resulting satellite photos look like ribbons stretching around the earth.
As you get closer to the poles, there'll be more overlap. Weather forecasters use the extra data in these regions to make more accurate maps of the South and North Poles.
This increased temporal resolution and frequency gives high-latitude meteorologists good North Pole pictures and usable animations. In these Polar Regions, satellite weather photos are poorer or nonexistent because the geostationary satellites don't cover them.
And now for…
We can interpret the images and make sense of this meteorological chaos from these two types of satellites.
Geostationary Satellites - Satellite weather pictures and large area pictures taken by geostationary satellites. They're great for animated satellite displays.
Polar Orbiting Satellites - Better resolution for studying and analyzing detailed photos, especially near polar latitudes, but not for animating them. They're also less expensive.
In your broadcast image, satellite-weather photos, air maps and animations offer better pictures.
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