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What is a daytime climate? enlightenment

What is a daytime climate? Clarification

In meteorology, a distinction is made between weather and climate. The term weather means the current weather conditions. The word climate, on the other hand, describes the long-term course of the weather. Central Europe, for example, has a temperate climate. It is shaped by the 4 seasons. But this is not the case everywhere. Some areas have a daytime climate.

What does that mean?

The annual climate refers to the long-term cyclical fluctuations in temperature, precipitation and wind conditions in a region. However, there are also areas on earth where the weather conditions are uniform throughout the year. This is especially true in the areas near the equator. There are hardly any seasonal changes in temperature there. It is often in the range above +25°C, but can also be lower at higher altitudes.

In the weather patterns of such areas, there are hardly any differences between the individual months. In the rainforest of the Amazon or the Congo it rains almost at the same time every day. Temperatures fluctuate by only a few degrees over the course of the year. On the other hand, temperature differences of 12 degrees and more can occur during the course of the day. If the daily fluctuations in temperature exceed the annual deviations, one speaks of a diurnal climate in meteorology. This means that the climate is determined by the time of day.

What does a daytime climate look like?

Sunrise occurs around 6 a.m. every day. The days are the same length throughout the year. Since the path of the sun is much steeper than in Central Europe, the dawn and dusk are very short. Early in the morning at 5.50 a.m. it is still dark and at 6.10 a.m. the sun is already shining. When it rises, the sky is mostly clear. If there is morning fog, it dissipates quickly because at the equator the sun's rays are much steeper and transmit more energy. This also means much more intense evaporation. Moisture rises from dense vegetation and water and collects in clouds. They grow rapidly until they rain down. This happens almost every day and mostly at the same time.

There are areas where you can almost set the clock after the daily downpour. The rain almost always comes down in the form of thunderstorms. That is a gross understatement, because in Germany such thunderstorms would be called cloudbursts. The rain, although heavy, does not last long. After an hour or two at most, it's all over. When the sun sinks lower in the afternoon, its radiation is no longer as intense. The clouds are dissipating and by evening at the latest the sky will be clear again.

The sun goes down around 6 p.m. Night falls a few minutes later. Due to the lack of solar radiation, it then cools down a bit. Despite this, temperatures, at least in places at sea level, still remain above +20°C. There are exceptions in regions that are very high. It can get quite chilly there at night, even near the equator. This is because the thin air is less able to store heat. In arid regions such as the Atacama and Namib deserts, the temperature differences between day and night are also greater. The reason for this is the dry air. Since it contains hardly any water vapour, it can only store little heat and cools down quickly after sunset.

What causes the daytime climate?

As with all weather, the driving force behind the daytime climate is the sun. It drives the weather patterns across the planet and is also responsible for this kind of climate that we find strange. At the equator, the Sun's orbit does not change throughout the year. It always rises at about 6 o'clock in the morning due east. At local noon it reaches the zenith and is then vertical in the sky. After that, its orbit will begin to tilt toward the west, finally setting at about 6 p.m. Day and night are always the same length.

These uniform astronomical conditions also ensure that there are only minor fluctuations in temperatures and precipitation. Dry and rainy seasons, if they exist at all, are only slightly pronounced. The climate changes much more over the course of a day than over a year. Places with a daytime climate are, for example, Manaus on the Amazon in Brazil or Kinshasa, the capital of the Democratic Republic of the Congo, located on the river of the same name, or Kampala, the capital of Uganda, not far from Lake Victoria.

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