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Present weather is the atmospheric condition at a given moment, affected by solar radiation and the Earth’s tilt. The jet stream and small atmospheric changes can impact weather globally. Other planets also experience weather changes, with Venus and Jupiter having notable phenomena.
The present weather is the condition of atmospheric phenomena occurring at a given moment. All day, every day, various conditions in the atmosphere change based on temperature and humidity density. Most of all present weather takes place in the part of the atmosphere known as the troposphere, the lowest region of air concentration in the sky. It differs from climate, which is the representation of long-term weather patterns over periods of time.
The main external stimuli affecting the present weather include solar radiation and the tilt of the earth’s axis. Sunlight hits Earth’s atmosphere from space, causing temperature changes. This radiation is naturally more heat intensive on the equator and less on the polar regions. Similarly, the fact that the Earth tilts in a certain way, depending on its position during the year, causes radiation to strike at different angles. This results in slight temperature swings and the creation of humidity throughout the atmosphere, creating different weather patterns.
One of the most widespread offshoots of solar radiation is the jet stream. This is the flow of high pressure air to low pressure areas caused by temperature changes. More easily, the jet stream moves from tropical regions near the equator to the polar regions, bringing with it humidity and higher temperatures. As the jet stream moves in a general pattern across the planet, different regions get hotter, while others get colder. Current weather conditions may vary depending on the speed and level of this air movement.
Small changes in some parts of the atmosphere can have major effects on the entire planet. For example, when a volcano erupts in the Pacific Ocean, it spews heat and dust into the atmosphere. The combination of particles and warmer temperatures causes a process of diffusion in areas with colder temperatures, resulting in a change in the current weather conditions from the point of the eruption to hundreds of miles away. Sometimes, events like these are so dramatic that the entire planet’s climate is altered for a short time until the Earth can regain its balance.
While current weather is thought to be mostly an aspect of Earth’s atmosphere, other planets also keep time. Venus has some of the most dramatic current weather patterns known in the solar system, with periods of acid rain and large heat shifts. Mars also experiences changes, such as strong winds, which move around the dust to produce storms. Perhaps the most notable weather phenomenon in the solar system is that of Jupiter’s Great Red Spot, which is actually a storm three times the size of Earth.
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