Wie entsteht eine Wettervorhersage?

WetterOnline

30 Jul 202003:36

Summary

TLDRWelcome to the weather rescue school! Discover how weather forecasts are made using around 10,000 stations, weather balloons, and satellites that gather data on temperature, humidity, and air pressure. This data is processed by powerful supercomputers, creating a global 'shopping net' model to predict weather at various altitudes. Mathematical formulas are applied to generate weather maps indicating pressure systems and temperatures. Finally, interpolation is used to estimate weather for specific locations, and symbols are assigned to create the familiar forecasts in weather apps. Try observing cloud streaks to predict short-term weather changes yourself!

Takeaways

🌍 There are around 10,000 weather stations globally that provide data on current weather conditions.
🚤 In addition to land stations, ships and buoys at sea also measure weather parameters such as temperature, humidity, and air pressure.
🎈 Weather balloons carrying instruments are launched worldwide to gather data from higher altitudes.
✈️ Thousands of airplanes also contribute to weather data collection by sending measurements from flight altitudes.
🛰️ Weather satellites observe cloud coverage and surface temperatures from space, providing crucial data for weather predictions.
💻 Weather forecasts are generated using supercomputers due to the vast amount of data involved.
🌐 A global network of data points is conceptualized as a shopping net wrapped around the Earth, with forecasts calculated for each intersection point.
🔢 Mathematical formulas are applied to the grid points to produce weather maps showing air pressure and temperature forecasts.
🏡 Interpolation is used to estimate the weather for locations between the grid points where most people live.
📊 Weather symbols are assigned to represent the forecasted conditions, which users see in weather apps.
👀 Observing cloud formations and condensation trails can give a simple indication of weather conditions, such as dry air leading to persistent fair weather or signs of weather change with moist air.

Q & A

What is the primary purpose of the video script?
-The primary purpose of the video script is to explain how weather forecasts are created and the various methods and technologies used to predict the weather.
How many weather stations are there globally that contribute to weather forecasting?
-There are approximately 10,000 weather stations globally that contribute to weather forecasting.
What types of locations do weather stations typically operate from?
-Most weather stations are located on land, but they can also be found on ships and buoys at sea.
What types of measurements do weather stations collect?
-Weather stations collect measurements such as temperature, humidity, and air pressure.
Why are weather balloons important for weather forecasting?
-Weather balloons are important because they carry instruments that measure weather conditions at various altitudes, providing data that is crucial for understanding atmospheric conditions.
How do airplanes contribute to weather forecasting?
-Airplanes contribute to weather forecasting by sending down measurements from high altitudes, which include data on temperature, humidity, and air pressure.
What role do weather satellites play in forecasting?
-Weather satellites observe cloud cover and surface temperatures from space, providing a broader view of weather patterns and conditions.
What is the term for the large computers used in weather forecasting?
-The large computers used in weather forecasting are called supercomputers.
How is the Earth represented in the computer models used for weather forecasting?
-In the computer models, the Earth is represented as a grid, with each intersection point of the grid being a point where a weather forecast is calculated.
What is the term used for the process of estimating the weather for a specific location based on the grid points?
-The process of estimating the weather for a specific location based on the grid points is called interpolation.
How are weather symbols chosen for the forecasts?
-Weather symbols are chosen based on the calculated weather conditions and are used to visually represent the forecast in weather apps and reports.
What simple method can individuals use to predict the weather themselves?
-Individuals can observe cloud formations and condensation trails in the sky. If condensation trails dissipate quickly, it may indicate dry air aloft and fair weather. If they persist and spread out, it could signal an approaching weather change due to moist air.

Outlines

00:00

🌦️ Weather Forecasting Process

The script introduces the process of weather forecasting, starting with the need to understand current weather conditions worldwide. It mentions approximately 10,000 weather stations on land and sea that measure temperature, humidity, and air pressure. The importance of weather balloons and aircraft that send data from high altitudes is highlighted, along with satellite observations that provide information about cloud cover and surface temperatures. These data points are fed into supercomputers, which use complex mathematical formulas to create a global grid for weather predictions. The script explains that these predictions are initially made for grid points and then interpolated to provide forecasts for specific locations, such as the user's area. It concludes by suggesting that viewers can attempt to make their own short-term weather predictions by observing cloud formations and how they change over time.

Mindmap

Keywords

💡Wettervorhersage

Wettervorhersage, or weather forecast, is a scientific prediction of the weather conditions expected in a certain area at a certain time. In the video, it is the central theme as it discusses how weather forecasts are generated using various data sources and complex computations. The script mentions that weather forecasts are not just about current conditions but also involve predictions for the future.

💡Wetterstationen

Wetterstationen, or weather stations, are the ground-based facilities that measure atmospheric conditions such as temperature, humidity, and air pressure. The script highlights that there are about 10,000 weather stations worldwide, most of which are located on land, contributing to the initial data collection for weather forecasts.

💡Meere

Meere, or seas, are mentioned in the context of weather data collection. Ships and buoys at sea measure weather conditions over the oceans, which is crucial since a significant portion of Earth's surface is covered by water. This data is important for creating accurate global weather models.

💡Wetterballons

Wetterballons, or weather balloons, are instruments that carry sensors up into the atmosphere to measure conditions such as temperature and humidity at various altitudes. The script uses weather balloons as an example of how vertical weather data is collected, which is essential for understanding weather patterns and forecasting.

💡Flughzeuge

Flughzeuge, or aircraft, are mentioned as another source of weather data. Thousands of airplanes provide meteorological data from flight altitudes, which is crucial for understanding weather conditions at different levels of the atmosphere. This information is fed into weather prediction models.

💡Wettersatelliten

Wettersatelliten, or weather satellites, observe weather conditions from space. They provide data such as cloud cover and surface temperatures of both land and sea. The script mentions that satellites offer a broader view, which is vital for global weather forecasting.

💡Supercomputer

A Supercomputer is a powerful computer capable of performing millions of calculations per second. In the context of the video, supercomputers are used to process the vast amounts of data collected for weather forecasting. They run complex mathematical models to predict future weather conditions.

💡Netz

Netz, or grid, refers to the global network of data points used in weather forecasting. The script describes the Earth being conceptualized as a grid, with weather forecasts calculated for each intersection point. This grid is essential for creating detailed weather models.

💡Interpolation

Interpolation is a mathematical technique used to estimate values between two known points. In weather forecasting, as described in the script, it is used to derive the weather forecast for a specific location that falls between the grid points where direct measurements are taken.

💡Wettersymbole

Wettersymbole, or weather symbols, are graphical representations used to depict weather conditions. The script mentions that after calculating the weather for grid points and interpolating for specific locations, appropriate weather symbols are selected to visually represent the forecast in weather apps.

💡Kondensstreifen

Kondensstreifen, or contrails, are the visible lines left by aircraft in the sky, which are actually condensation trails. The script suggests observing contrails as a simple way to predict weather; if they dissipate quickly, it indicates dry air aloft, while lingering contrails might suggest an incoming weather change.

Highlights

Welcome to the weather school by wetteronline.

Weather forecasts are generated using a complex system.

Around 10,000 weather stations provide data on land.

Ships and buoys measure weather conditions at sea.

Weather balloons and airplanes also contribute to data collection.

Satellites observe cloud cover and temperature from space.

All collected data is fed into supercomputers for processing.

A global network of data points is used for weather prediction.

Mathematical formulas are applied to calculate weather forecasts.

Weather maps showing high and low-pressure areas are generated.

Temperature forecasts are also part of the generated maps.

Interpolation is used to estimate weather for locations between data points.

Appropriate weather symbols are selected for the forecasts.

Weather forecasts are displayed in apps like those from wetteronline.

Creating a weather forecast involves understanding global current weather.

Observations are input into a computer that models the globe with a network.

Many mathematical formulas are used to compute weather predictions for this network.

The final step is interpolating the grid network to your location.

It's a complex process to create a weather forecast.

You can try to predict the weather yourself by observing clouds and condensation trails.

Quickly dissipating condensation trails indicate dry high-altitude air.

Longer lasting condensation trails may signal an approaching weather change.

This educational content is provided by the weather school of wetteronline.