You have new items in your feed. Click to view.
Question and answer
Choose an anthropogenic issue affecting the global oceans and summarize it for the class. Why is it important? How have humans caused or exacerbated this issue? What are the effects of this issue?
Climate change feedback is important in the understanding of global warming because feedback processes may amplify or diminish the effect of each climate forcing, and so play an important part in determining the overall climate sensitivity. [ Feedback in general is the process in which changing one quantity changes a second quantity, and the change in the second quantity in turn changes the
first. Positive feedback amplifies the change in the first quantity while negative feedback reduces it.[1] By definition, forcings are external to the climate system while feedbacks are internal; in essence, feedbacks represent the internal processes of the system. Some feedbacks may act in relative isolation to the rest of the climate system; others may be tightly coupled; hence it may be difficult to tell just how much a particular process contributes.[2] Forcings, feedbacks and the dynamics of the climate system determine how much and how fast the climate changes. The main positive feedback in global warming is the tendency of warming to increase the amount of water vapor in the atmosphere, which in turn leads to further warming.[3] The main negative feedback comes from the Stefan–Boltzmann law, the amount of heat radiated from the Earth into space changes with the fourth power of the temperature of Earth's surface and atmosphere. Some observed and potential effects of global warming are positive feedbacks, which contribute directly to further global warming. The Intergovernmental Panel on Climate Change's (IPCC) Fourth Assessment Report states that "Anthropogenic warming could lead to some effects that are abrupt or irreversible, depending upon the rate and magnitude of the climate change."[4] ]
Expert answered|markworley|Points 340|
Asked 11/15/2012 7:45:54 PM
0 Answers/Comments
Get an answer
New answers

There are no new answers.


There are no comments.

Add an answer or comment
Log in or sign up first.
26,775,820 questions answered
Popular Conversations
Simplify -|-5 + 2| User: How many terms are in the expression shown ...
Weegy: -54 + 18 = -36 User: Simplify 3(x - 4) + 8(x + 2) User: What is the equation of the line that passes through ...
1/17/2017 1:07:03 PM| 5 Answers
3r = 10 + 5s, when r = 10?
Weegy: r(r+3) = 1 User: 5x + 2y = 20, when x = 0.3? User: What is the value of a in the equation 3a + b = 54, when b ...
1/17/2017 9:50:12 AM| 3 Answers
All men were given the right to vote in the Fifteenth Amendment, ...
Weegy: All men were given the right to vote in the Fifteenth Amendment, and women in the Nineteenth Amendment. ...
1/17/2017 9:22:18 AM| 2 Answers
If you visit the Senate chamber during a session on an average day, ...
Weegy: Teamwork is a joint action by two or more people or a group, [ in which each person contributes with different ...
1/17/2017 11:14:47 AM| 2 Answers
How many seats in the Senate are up for election every two ...
Weegy: There are 2 pints in a quart. User: Articles 1 and 2 of the Constitution provide senators with all of these ...
1/17/2017 2:31:03 PM| 2 Answers
Weegy Stuff
Points 299 [Total 299] Ratings 0 Comments 299 Invitations 0 Offline
Points 168 [Total 180] Ratings 0 Comments 168 Invitations 0 Offline
Points 159 [Total 590] Ratings 2 Comments 139 Invitations 0 Offline
Points 85 [Total 87] Ratings 5 Comments 35 Invitations 0 Offline
Points 58 [Total 4017] Ratings 0 Comments 58 Invitations 0 Offline
Points 53 [Total 948] Ratings 1 Comments 43 Invitations 0 Offline
Points 40 [Total 40] Ratings 4 Comments 0 Invitations 0 Offline
Points 24 [Total 96] Ratings 0 Comments 24 Invitations 0 Offline
Points 12 [Total 12] Ratings 0 Comments 12 Invitations 0 Offline
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.