How to Get an Atmosphere | NOVA | PBS

Three factors play into a gas's ability to escape the pull of a planet's gravity: temperature, molecular mass, and escape velocity, the speed a molecule needs to achieve to escape into space ...

Phay Than Vlog | Sittwe

Phay Than Vlog, Sittwe, Rakhine State, Myanmar. 6,696 likes · 9 talking about this. "ဘဝဆိုတာ ကိုယ္ ကျခယ္ ရင္ ျခယ္ သ ေလ

Atmosphere | National Oceanic and Atmospheric …

The atmosphere is a layer of gas and suspended solids extending from the Earth's surface up many thousands of miles, becoming increasingly thinner with distance but always held by the Earth's gravitational pull. The atmosphere surrounds the Earth and holds the air we breathe; it protects us from outer space; and holds moisture (clouds), …

Atmosphere

The atmosphere of Venus is about 96 percent carbon dioxide, with surface temperatures of about 737 K (464 °C, or 867 °F). Clouds on Venus are made of sulfuric acid (H 2 SO 4) …

physical chemistry

Therefore, atmospheric escape depends on the mass of the planet, the temperature of the atmosphere, and the molar mass of the gas. By my calculation, the …

Could we breathe an atmosphere that is not …

As I understand it, the important part of Earth's atmosphere that we breathe is the oxygen. However, Earth's air is only about 21% oxygen with the rest made up of …

atmosphere

Venus has an atmosphere composed of nearly pure CO2 (actually about 96.5%). The surface temperature on Venus is around 750K at the equator when facing the sun and drops by a mere 5K overnight. Night and day are about 120 earth days in length so that's a pretty slow axial rotation and a very slow loss of surface heat during the planet's …

Parts of the Atmosphere

The atmosphere is so spread out that we barely not ice it, yet its weight is equal to a layer of water more than 10 meters (34 feet) deep covering the entire planet. The bottom 30 kilometers (19 miles) of the atmosphere contains about 98 percent of its mass. The atmosphere— air —is much thinner at high altitudes. There is no atmosphere in …

Methane and climate change – Methane Tracker 2021 – …

Methane has important implications for climate change, particularly in the near term. Two key characteristics determine the impact of different greenhouse gases on the climate: the length of time they remain in the atmosphere and their ability to absorb energy. Methane has a much shorter atmospheric lifetime than CO 2 (around 12 years compared ...

Greenhouse gas

Methane (CH 4) is the second most important greenhouse gas.CH 4 is more potent than CO 2 because the radiative forcing produced per molecule is greater. In addition, the infrared window is less saturated in the range of wavelengths of radiation absorbed by CH 4, so more molecules may fill in the region. However, CH 4 exists in far lower concentrations …

Can one assume atmosphere (primarily nitrogen) is heavier than …

Water-vapor has a molecular mass of 18. Our Oxygen-Nitrogen atmosphere has an average mass of about 29. But Water Vapor rarely takes up more than 1% of the atmosphere, perhaps 2% in hot climate, 3% in very hot, but that's 3% of the air with a 38% decrease in mass, resulting in a net change of less than 1% in the most extreme conditions.

Can one assume atmosphere (primarily nitrogen) is heavier than …

Our Oxygen-Nitrogen atmosphere has an average mass of about 29. But Water Vapor rarely takes up more than 1% of the atmosphere, perhaps 2% in hot climate, 3% in very hot, but that's 3% of the air with a 38% decrease in mass, resulting in a net change of less than 1% in the most extreme conditions.

The Atmosphere: Earth's Security Blanket

Our atmosphere seems tantalizingly close and yet mysteriously distant. The life-sustaining air we breathe envelops our planet like a pale-blue security blanket, clinging to us by the force of gravity. We see birds, planes, an ever-changing patchwork of clouds and, in some places, air pollution.

Layers of Earth's Atmosphere | Center for Science Education

Earth's atmosphere has a series of layers, each with its own specific traits. Moving upward from ground level, these layers are called the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The exosphere gradually fades away into the realm of interplanetary space. Layers of the atmosphere: troposphere, stratosphere, mesosphere ...

Why Does Earth Have an Atmosphere? | Live Science

That is, why does Earth have an atmosphere? In short, our atmosphere is here because of gravity. When Earth formed, about 4.5 billion years ago, the molten planet barely had an atmosphere. But as ...

Earth nearly lost all its oxygen 2.3 billion years ago

Earth nearly lost all its oxygen 2.3 billion years ago News By Stephanie Pappas published 8 April 2021 A new study pushes the permanent rise of oxygen in the atmosphere to 100 million years...

Climate Change: Atmospheric Carbon Dioxide

Based on analysis from NOAA's Global Monitoring Lab, global average atmospheric carbon dioxide was 414.72 parts per million ("ppm" for short) in 2021, setting a new record high despite the continued economic drag from the COVID-19 …

Earth nearly lost all its oxygen 2.3 billion years ago

Oxygen rose again 2.32 billion years ago — the point at which scientists previously thought the rise was permanent. But in the younger rocks, Bekker and his colleagues again detected a drop in ...

Parts of the Atmosphere

Earth's atmosphere has a layered structure. From the ground toward the sky, the layers are the troposphere, stratosphere, mesosphere, thermosphere, and …

Rocket launches reveal water vapor effect in upper atmosphere

A time-lapse photograph captures the Super Soaker launches on Jan. 25-26, 2018. Three rockets launched with the mission, two using vapor tracers to track wind movement and one releasing a water ...

The 4 Most Abundant Gases in Earth's Atmosphere

The most abundant gases in Earth's atmosphere depend on the region of the atmosphere and other factors. Since the chemical composition of the atmosphere …

atmosphere

This brings up a third and the ultimate mechanism by which the Earth's heat escapes into space, which is electromagnetic radiation. Every object, including the Earth's surface, absorbs and radiates heat electromagnetically. The atmosphere does the same. The atmosphere absorbs most of the electromagnetic radiation emitted by the Earth's …

chemistry

The Earth's atmosphere also consists mainly of nitrogen, although only 80% rather than 98%. However, I think oxygen and nitrogen have similar scattering properties, so the exact mix shouldn't matter much. The sea-level pressure for your planet is about the same as airline cruising altitude on Earth.

Atmosphere | National Oceanic and Atmospheric …

The atmosphere surrounds the Earth and holds the air we breathe; it protects us from outer space; and holds moisture (clouds), gases, and tiny particles. In short, the atmosphere is the protective bubble in which we live. This protective bubble consists of several gases (listed in the table below), with the top four making up 99.998% of all gases.

Climate Change: Atmospheric Carbon Dioxide | NOAA …

Based on analysis from NOAA's Global Monitoring Lab, global average atmospheric carbon dioxide was 414.72 parts per million ("ppm" for short) in 2021, setting a new record high despite the continued economic drag from the COVID-19 pandemic.

Layers of Earth's Atmosphere | Center for Science Education

The troposphere is the lowest layer of our atmosphere. Starting at ground level, it extends upward to about 10 km (6.2 miles or about 33,000 feet) above sea level. We humans live in the troposphere, and nearly all weather occurs in this lowest layer.

What Might Happen If The Earth Didn't Have An …