This topic contains a solution. Click here to go to the answer

Author Question: What is radiative equilibrium and how is it influenced by greenhouse gases? What will be the ideal ... (Read 165 times)

altibaby

  • Hero Member
  • *****
  • Posts: 562
What is radiative equilibrium and how is it influenced by greenhouse gases?
  What will be the ideal response?

Question 2

Explain why it is important not to base opinions of global warming on a specific weather event, such as an extremely cold winter in North America. Provide examples to support your answer.
  What will be the ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kswal303

  • Sr. Member
  • ****
  • Posts: 316
Answer to Question 1

ANSWER: When the rate of the incoming solar energy balances the rate of outgoing infrared energy from Earths surface and atmosphere, the Earth-atmosphere system is in a state of radiative equilibrium. Increasing concentrations of greenhouse gases can disturb this equilibrium and are, therefore, referred to as radiative forcing agents. The radiative forcing provided by extra CO2 and other greenhouse gases has increased by about 3 W/m2 over the past several hundred years, with the most rapid increase occurring over the last several decades. At the same time, increasing amounts of Sun-blocking aerosols emitted by human activity (such as sulfates and other pollutants), together with their effects on cloudiness, have led to a decrease in radiative forcing estimated at roughly 1 W/m2, which counteracts part of the greenhouse forcing.

Answer to Question 2

ANSWER: Global warming in any given year is small, and only becomes significant when averaged over many years, such as decades. So it is important not to base global warming on a specific weather event. For example, a January cold wave across eastern North America in 2014 sent temperatures plummeting. Atop Mount Mitchell in North Carolina, a low temperature of 31C (24F) was the second coldest reading ever observed there. Binghamton, New York, dipped below 0F on ten days, the most ever recorded there in January. Yet at the same time, it was the third warmest January on record in California, and globally, January 2014 was the fourth warmest on record. (Note that the United States only represents about 2 of the entire surface area of the planet, so one cannot use United States conditions alone as an index of how much the entire world is warming.)





 

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

For a complete list of videos, visit our video library