Reliable and accurate prediction of total cloud cover (TCC) has a principal importance in observational astronomy (Ye and Chen, 2013) and in the prediction of photovoltaic energy production, as it is the main cause of variation in solar-radiation energy supply (Matuszko, 2012; McEvoy et al., 2012), but it is also of great relevance in agriculture, tourism and in some other fields of economy.
How can I tell where cloud cover occurs in combination?
In addition to information about cloud cover, our radar also tells you where cloud cover occurs in combination with precipitation. You can also recognize precipitation by a colored shading on the cloud cover map.
What does the cloud cover map show?
With the cloud forecast for the next few hours, you can see how the cloud cover will develop. Especially if you are chasing some sun rays, our cloud cover map is therefore very suitable to provide you with an insight into the current cloud cover. In yellow-colored areas, the sun is shining.
How does cloud cover affect outdoor photography?
Cloud cover can make or break many kinds of outdoor photographic opportunities and that’s why the website Clear Dark Sky should be bookmarked by any discerning photographer. This website, originally intended for astronomers, will give you a cloud cover forecast for a specific time and location.
How can I see the future course of the clouds?
With the cursor at the bottom left of the cloud cover map, you can visualize the future course of the clouds. This will tell you how the cloud cover will change over the next 36 hours.
Can you predict cloud cover?
Cloud cover also depends on several mesoscale factors. Some of these include orographic uplift, the sea breeze, ocean/ lake induced clouds, PBL convergence and dryline convection. Personal experience is the best tool in predicting mesoscale cloud cover.
How accurate are cloud cover predictions?
In general, the model forecast is consistent with the ISCCP observations. For total cloud cover, our result shows the goodness of the GFS model forecast, with a mean error within ±15 per cent in most areas.
How do meteorologists predict the amount of cloud cover?
Meteorologists also use satellites to observe cloud patterns around the world, and radar is used to measure precipitation. All of this data is then plugged into super computers, which use numerical forecast equations to create forecast models of the atmosphere.
How do you interpret cloud cover?
The unit of measure for cloud cover is the Okta. Cloud cover is measured on an eight point scale, 0 Oktas being clear sky , one Octa being 1/8 of the sky covered in cloud, and so on up to 8 Oktas – completely overcast.
Is it colder when there are no clouds?
If there are no clouds, the energy from the ground just goes up, up, and away… Whenever it’s a clear night and you can see lots of stars, there is nothing to trap all that infrared energy, so it’s lost to space and we feel cold.
How does cloud cover affect climate?
Clouds can trap that heat from the Sun. At night, when there’s no sunlight, clouds are still trapping heat. It’s sort of like clouds are wrapping Earth in a big, warm blanket. So clouds can have both a cooling effect and a warming effect.
How is weather prediction done?
Ground radar, weather balloons, aircraft, satellites, ocean buoys and more can provide three-dimensional observations that a model can use. This allows meteorologists to simulate what the atmosphere is currently doing and predict what will happen in the next few days or, for some models, hours.
How can you tell how high a cloud is?
The height (in feet) above ground of the base of cumulus clouds can be estimated quite accurately with this rule of thumb: Subtract the dew point from the temperature and multiply the result by 230.
Which instrument is best used to predict weather changes?
Meteorologists use barometers to predict short-term changes in the weather. A rapid drop in atmospheric pressure means that a low-pressure system is arriving.
What does 80% cloud cover look like?
Mostly cloudy (or broken) is classified as 70 to 80 percent cloud cover or five to seven oktas. This is less than the 90 to 100 percent (eight oktas) used to define overcast skies. On mostly cloudy days, you will be able to see separation in the clouds. On overcast days, the sky looks like one big cloud.
What is good cloud cover?
About 30-60% cloud cover is ideal. Any more/less than that and your photo could be a flop. You tend to see more fiery colored skies as the sun is setting. This is because the sun is at its lowest angle and is about to slip below the horizon.
What causes low cloud cover?
High-level, feathery clouds help heat the planet during the day, allowing sunlight to penetrate the surface and prevent heat from escaping. Meanwhile, lower level clouds often reflect heat from the sun back into space and keep the surface temperatures cool.
Why is darkness important for astrophotography?
The darkness indication is also of particular importance to photographers because this takes into account the phase of the moon and the position of it above the horizon. For good astrophotography you want to have the darkest sky possible.
Can cloud cover be used for photography?
Cloud cover can make or break many kinds of outdoor photographic opportunities and that’s why the website Clear Dark Sky should be bookmarked by any discerning photographer. This website, originally intended for astronomers, will give you a cloud cover forecast for a specific time and location. Whilst most people will immediately imagine using this to predict clear skies at night for astrophotography, there’s no reason why you can’t also use it to predict days of overcast conditions which are often preferred for wildlife and macro photography.