Atmospheric Sciences

The outermost layer of Earth's atmosphere is called the exosphere. It extends from the top of the thermosphere to space and contains few particles, making it very thin.

The minimum level of carbon dioxide required for life to exist on Earth is about 150 parts per million (ppm). Below this level, plant growth and photosynthesis can be restricted, which can have a cascading effect on the entire ecosystem.

Prior to humans, it was volcanoes. But humans currently emit over 100 times as much as volcanoes do on an annual average basis, and this is partially because volcanic activity has been low in the recent past.

It also matters how we view the issue. If we view man's contributions in total verses natures contributions in total, nature produces 94% of the total CO2 produced. Some of man's 6% would belong to nature had we not burned the wood or ate the growth before it decayed.

In the open atmosphere, cloudy conditions are often associated with sinking air that cools as it descends. This cooling can result in the saturation of the air, leading to the formation of clouds and potentially precipitation. The sinking air in cloudy conditions is generally stable and can inhibit vertical cloud development.

The troposphere is the layer of the atmosphere that creates weather. It is where most of Earth's weather occurs due to the mixing of air masses with different temperatures and humidities, leading to the formation of clouds, precipitation, and other weather phenomena.

The glowing atmospheric lights seen at the polar regions are called auroras. They are caused by the interaction between the solar wind and the Earth's magnetic field, which leads to the emission of light in the upper atmosphere. In the Northern Hemisphere, they are called aurora borealis or northern lights, while in the Southern Hemisphere, they are called aurora australis or southern lights.

There are times when the Senate is more formal, but most of Senate business is not done of the Senate floor. Senators make speeches because they want them in the Senate record and possibly because they want to be seen on TV, but they do not expect the other Senators to be moved by their oratory. Senators do have to be present to vote and sometimes they have to hang around the Senate floor when an important vote is expected, so they talk to people and try to get something done while they wait for the vote to come up.

The atmosphere is a unit that represents atmospheric pressure at sea level, which is equivalent to about 101,325 pascals. The pascal is the SI unit for pressure, where 1 atmosphere is equal to 101,325 pascals.

The troposphere is the hottest part of the atmosphere because it is closest to the Earth's surface where heat is generated and trapped. This layer is heated by the sun's energy that is absorbed by the Earth's surface, causing the air to warm up as it rises through convection.

No. The Concorde, as with any airplane, is dependent on the atmosphere to keep it above the ground, through its wings. The Concorde has a maximum "ceiling" of 60,000 feet, or about 12 miles above sea level (and about twice the elevation of Mt. Everest). If you could somehow stand on something at that height and be exposed to the atmosphere, it would be far too cold and the air too thin to survive, with only about 10 per cent of the air pressure that there is at sea level, but it is still significant. The Concorde is not capable of "flying" outside an atmosphere, as its jet engines require air to operate.

It helps every people and animals to breath.

It is a security Blanket for the earth.

The atmosphere of Earth protects us and all living things on the earth from dangerous radiation from the sun. In addition to the light we see, the sun also gives off ultraviolet radiation. Much of it is filtered out by the atmosphere. Ultraviolet radiation can destroy living cells causing harm to our skin and leading to skin cancer. The sun's rays are important for us. They provide light and heat but they also contain dangerous rays that can harm us. The atmosphere helps to protect us.

The stratosphere is cold because it is heated from below by the Earth's surface but does not have direct contact with the surface, so it lacks a significant source of heat. Additionally, the stratosphere contains ozone molecules that absorb and redistribute incoming solar radiation, leading to a temperature increase with altitude.

Oxygen was missing from Earth's early atmosphere. Instead, it mainly consisted of nitrogen, carbon dioxide, and water vapor. Oxygen levels increased over time due to the emergence of photosynthetic organisms.

The ionosphere affects communication by reflecting or absorbing radio waves, which can cause signal interference, distortion, or loss. Changes in the ionosphere, such as during solar flares or geomagnetic storms, can impact the propagation of radio signals and disrupt communication networks. Understanding and monitoring ionospheric conditions is essential for maintaining reliable communication systems.

Other planets may not have atmospheres due to a variety of factors such as their distance from the sun, composition, size, and lack of magnetic field to protect the atmosphere from being stripped away by solar wind. Additionally, some planets may have had their atmosphere stripped away over time due to various geological processes or impacts from celestial bodies.

No, the temperature in the troposphere decreases as the altitude increases.

The thermosphere has high temperature because the few molecules present can absorb high-energy solar radiation. However, since there are so few molecules, the heat energy is not readily transferred to a thermometer, so it would not feel hot to us.

As of now, we have not observed any objects or phenomena beyond the Oort Cloud. The Oort Cloud is the theoretical boundary of the solar system, so anything beyond it would be in interstellar space. Technology limitations make it difficult to observe objects at such extreme distances.

The atmosphere can become unhealthy due to high levels of pollutants such as particulate matter, ozone, carbon monoxide, sulfur dioxide, and nitrogen dioxide. These pollutants can come from sources like vehicle emissions, industrial activities, agricultural practices, and wildfires, leading to poor air quality and adverse health effects for people and the environment.

The troposphere is the layer of the atmosphere that contains most of the atmosphere's total mass. It is the layer where weather occurs and where most of Earth's air is found.

The air in the thermosphere is very thin because of it's high altitude.

Cyanobacteria are hypothesized to be the early source of free oxygen in Earth's atmosphere through the process of photosynthesis. They evolved around 2.7 billion years ago and played a key role in the Great Oxidation Event, gradually increasing the levels of oxygen in the atmosphere.

The quantity of air in the atmosphere above our head is about 250 kilograms which is about the weight of two baby elephants. But we don't feel the enormous weight is balanced by the pressure exerted by the blood and other fluids present in our body

In the ionosphere, molecules and atoms are ionized by solar radiation, creating charged particles that can reflect radio waves and influence radio communications. This region plays a crucial role in long-distance radio communication by allowing signals to bounce off the ionosphere and travel long distances, especially during the day.

Most of the oxygen in Earth's atmosphere comes from photosynthesis carried out by plants, algae, and cyanobacteria. These organisms utilize sunlight to convert carbon dioxide into oxygen during this process.