📹 Weather 101: Humidity VS Dewpoint
Meteorologist Jen Carfagno explains the difference between humidity and dewpoint, two aspects of weather that are often …
Which is a greenhouse gas?
The greenhouse effect is a process where heat is trapped near Earth’s surface by greenhouse gases, such as carbon dioxide, methane, ozone, nitrous oxide, chlorofluorocarbons, and water vapor. These gases help maintain a warmer temperature than it would otherwise have. Carbon dioxide is crucial for maintaining Earth’s atmosphere stability, as it would collapse the terrestrial greenhouse effect and drop Earth’s surface temperature by approximately 33°C (59°F).
Earth is often called the ‘Goldilocks’ planet due to its natural greenhouse effect, which maintains an average temperature of 15°C (59°F). However, human activities, primarily from burning fossil fuels, have disrupted Earth’s energy balance, leading to an increase in carbon dioxide in the atmosphere and ocean. The level of carbon dioxide in Earth’s atmosphere has been rising consistently for decades, trapping extra heat near the planet’s surface and causing temperatures to rise.
What causes greenhouse gases?
Fossil fuels, including coal, oil, and gas, are the primary contributors to global climate change, accounting for over 75% of global greenhouse gas emissions and nearly 90% of all carbon dioxide emissions. These emissions trap the sun’s heat, leading to global warming and climate change. The world is currently warming faster than ever before, altering weather patterns and disrupting the natural balance, posing risks to humans and all life forms on Earth.
Most electricity is generated by burning coal, oil, or gas, which produces carbon dioxide and nitrous oxide, which trap the sun’s heat. Over a quarter of electricity comes from renewable sources like wind and solar. Manufacturing and industry also contribute to greenhouse gas emissions, with machines used in manufacturing often running on coal, oil, or gas. The manufacturing industry is one of the largest contributors to greenhouse gas emissions worldwide.
What is number 1 greenhouse gas?
CO2 accounts for 76% of global greenhouse gas emissions, with methane from agriculture contributing 16% and nitrous oxide from industry and agriculture contributing 6%. The rise in carbon dioxide emissions since the industrial revolution has significantly impacted countries. China, the United States, and the European Union are the three largest emitters, with per capita emissions highest in the United States and Russia. Most of the world’s greenhouse gas emissions come from a small number of countries.
Why is it called a greenhouse gas?
The greenhouse effect on Earth involves the trapping of heat by greenhouse gases, such as carbon dioxide. These gases, like the glass roof of a greenhouse, trap heat during the day and release it at night. The Earth’s atmosphere traps some of the Sun’s heat, preventing it from escaping back into space at night. This keeps Earth at an average temperature of 58 degrees Fahrenheit (14 degrees Celsius).
What is one of the main greenhouse gas?
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities, entering the atmosphere through burning fossil fuels, solid waste, trees, and biological materials. It is removed from the atmosphere when absorbed by plants as part of the biological carbon cycle. Methane is emitted during the production and transport of coal, natural gas, and oil, as well as from livestock and agricultural practices, land use, and organic waste decay in municipal solid waste landfills.
Nitrous oxide is emitted during agricultural, land use, and industrial activities, combustion of fossil fuels and solid waste, and wastewater treatment. Fluorinated gases, such as hydrofluorocarbons, perfluorocarbons, sulfur hexafluoride, and nitrogen trifluoride, are synthetic, powerful greenhouse gases emitted from various household, commercial, and industrial applications. They are sometimes used as substitutes for stratospheric ozone-depleting substances.
Fluorinated gases are typically emitted in smaller quantities than other greenhouse gases but are potent greenhouse gases with high global warming potentials (GWPs) due to their ability to trap substantially more heat for a given mass.
What are the answer to greenhouse gases?
Greenhouse gases are atmospheric trace gases that keep the Earth’s surface warm, with water vapor accounting for about three-quarters of the natural greenhouse effect. Other greenhouse gases include methane, nitrous oxide, ozone, and CFCs. Researchers have been measuring air composition for years to monitor changes. The Australian Bureau of Meteorology and CSIRO collect data on atmospheric composition from the Cape Grim Baseline Air Pollution Station in Tasmania, the foremost facility for monitoring pollutant levels in southern hemispheric air. The station is operated jointly by the Australian Bureau of Meteorology and CSIRO.
Why is a greenhouse called a greenhouse?
A greenhouse is a type of plant house that is not green due to its paint color; rather, it is the glass or plastic construction that lends the structure its green hue. The transparent walls allow ample light for the growth of green plants.
Which of the following best describes a greenhouse gas?
Greenhouse gases absorb and retain heat within the Earth’s atmosphere, thereby contributing to the phenomenon known as the greenhouse effect. To gain full access to our articles, please visit our website and complete the BNAT examination. Successful candidates will be awarded a scholarship of 100 for BYJUS courses.
What is a quality of a greenhouse gas 1 point?
Greenhouse gases are gases that absorb infrared radiation from Earth’s surface and reradiate it back to Earth, contributing to the greenhouse effect. The most important greenhouse gases are carbon dioxide, methane, and water vapor, while surface-level ozone, nitrous oxides, and fluorinated gases also trap infrared radiation. These gases have a significant impact on the Earth’s energy budget and have varied significantly throughout Earth’s history, driving climate changes at various timescales.
Several processes, including tectonic activities, vegetation, soil, wetland, and ocean sources and sinks, influence greenhouse gas concentrations. Human activities, particularly fossil-fuel combustion since the Industrial Revolution, have led to steady increases in atmospheric concentrations of greenhouse gases, particularly carbon dioxide, methane, ozone, and chlorofluorocarbons (CFCs).
Gas molecules, including greenhouse gases, protect the Earth by shielding and trapping infrared radiation. Some of these molecules belong to the category of atmospheric gases called greenhouse gases, which help slow the emission of heat energy from the Earth’s surface during the day.
What is the best description of greenhouse gases?
Greenhouse gases, or GHGs, are gases in the Earth’s atmosphere that trap heat, keeping the Earth’s temperature at an average of 14˚C (57˚F). These gases act like glass walls, trapping heat during the day and releasing it at night. Without the greenhouse effect, temperatures could drop to -18˚C (-0. 4˚F), too cold for life on Earth. However, human activities are altering the natural greenhouse effect, leading to a dramatic increase in greenhouse gas release, which scientists believe is the cause of global warming and climate change.
📹 Why you don’t hear about the ozone layer anymore
Finally, some good news about the environment. Subscribe and turn on notifications so you don’t miss any videos: …
For those who are still confused. Relative humidity is the amount of water vapour in the air with respect to the actual water holding capacity of the air at a given temperature. Higher temperature can hold more water vapour. Lower temperature holds less. RH does not tell you how much water vapour is in thr air. Dew point on the other hand tells you, for given amount of water vapour what is the lowest temperature at which the air gets fully saturated. This tells us how much vapour is actually in the air. At 50°C air temperature the dew point can be 45°C, if the RH is very high. This means there is no much vapour in the air that only a 5° C drop in temperature can result to 100% RH. Also, at 100% RH, the dew point is equal to the wet bulb temperature
Jen, Thank you. There has been little success in me finding out why one day it could be 80° with a Relative Humidity of 60% and a Dew Point of 68° and I feel like I am trying to breathe in thick air. I struggle and have to limit my outdoor activities. So when they warn us to keep the elderly, small children, and people with respiratory and/or heart disease inside where the A/C can offer some relief – that’s where I live. Yet there are days that seem to be near as warm with a little lower humidity and a dew point around 50 and I can breathe great. Thank you so very much for the graphics and the effort put into making this fun for kids of all ages. I hope to see more on these and other topics and I consider you the Dew Point guru of TWC and WU. And please do not let the hecklers and bored people get you down. You are a well respected scientist and meteorologist with a pleasant brightness around everything you report and teach. Shine on my friend, SHINE ON. Best Regards, Dave and Cathy Williams
Please do a part B with a little more detail and speaking a tad slower. How is the air (humidity and dew point and whatever else contributes to how it feels) different in lets say Portland, Oregon as compared to Pensacola, Florida? This may be a different topic, but how is much of Texas so dry on the ground and with fewer lush plants, yet they call it humid?
Stick with humidity. Forget few point. Dew point is the temperature at which dew will form. That’s why it’s appropriately called “The Dew Point”. Relative Humidity is a better way. If I held up a glass half full of water, the human brain can grasp ” 50% ” full. With dew point, you have to do all kinds of math and still can’t figure it out. Relative Humidity is old school and better
“The percentage of moisture in the air” and “the amount of moisture in the air” are exactly the same, given a fixed volume and temperature. A better definition of the dew point is the temperature at which the relative humidity is 100%, i.e., the air is saturated. A better definition of relative humidity is the amount of moisture in the air compared to the maximum amount the air can “hold” at that temperature. Yes, this article is very confusing, and I don’t believe it would be helpful to someone who doesn’t already understand vapor pressures and thermodynamics. I would even bet my life savings that she didn’t fully understand either. There are much better explanations of this topic on YouTube.
🤣🤣🤣🤣🤣🤣🤣🤣 Sorry… Relative humidity is amount of moisture present in air to the most it can hold at paricular temperature. Moisture holding capacity of air is temperature dependent at high temperature air molecules expand so there is more space between molecules for moisture. But at particular temperature it has certain capacity tol hold vapours. So SUPPOSE AIR CAN HOLD 100 MOLECULES OF WATER VAPOUR AT PARTICULAR TEMPERATURE BUT IT HAVE 50 RIGHT NOW RELATIVE HUMIDITY WILL BE 50% NOW THE DEW POINT… AS Temperature decreases air molecules come closer and it’s water vapour holding capacity also decreases. So suppose air can hold 100 molecules at particular temperature it’s also it’s dew point because if you decrease temperature air molecules will come closer and water will get drain. So at dew point rh is always 100℅ as its holding the most vapour in it at that temperature
You don’t hear about the ozone layer because it was a scam. Even at the very start of the article, you can see people failing to report that the “ozone layer” over the antarctic probably had a “hole” in it for tens of millions of years before the present. This is because the convection currents caused by the continental mass simply redistribute the O3 during the six months where no more O3 is created, because there’s no sunlight. This is a basic fact that any competent scientist knew, but they lied in order to literally scare up more funding as well as to help corporations profit: The ban on CFCs was a sham, corporations and regulators colluding to force people to use more expensive and dangerous, less effective chemicals in place of CFCs, because those bad chemicals were still under patent, making them more money. An equivalent of what we’ve seen in the past three years.
It was recognized in the early 1970s. The Antarctic ozone hole opened up to cover NZ at it’s worst extent. It became quite a big problem for Friesian Dairy cows with bad sunburn on the udders as the breeding that produced an expanded udder reduced the melatonin, and protective hair cover on the udders. This is now a minor problem, but was causing thick black scabs on older cows at it’s worst. One would have to be doubtful that that cooperation could be achieved todays world of self interest.