1. Complex systems such as the climate are characterized by thresholds and feedb
ID: 298523 • Letter: 1
Question
1. Complex systems such as the climate are characterized by thresholds and feedback loops. Describe 2 positive feedback loops for global climate change. Describe 2 negative feedback loops for global climate change
2. If all of the ice in the Arctic Ocean were to melt, how high would global sea-level rise? If all the ice in Greenland were to melt, how high would global sea-level rise? How likely is this in the next 10 years?
3. Describe three (3) specific cities that would be catastrophically impacted by sea-level rise by 2100. Please provide evidence and mechanisms in your response
Explanation / Answer
1. Complex systems such as the climate are characterized by thresholds and feedback loops. Describe 2 positive feedback loops for global climate change. Describe 2 negative feedback loops for global climate change
Thresholds and abrupt climate change based on definition of threshold and abrupt. If climate system changes in a gradual way until it crosses some threshold, there after any change that is defined as abrupt. The changes at the threshold are abrupt relative to the changes that occur before or after threshold and lead to transition to new state.
Feed back loop in climate change is equivalent of a vicious or virtuous circle. That is climate that accelerates pr decelerates a warming trend.
A positive feed back accelerates a temperature rise and a negative feedback decelerates temperature.
There are no of feedbacks loop in the climate system.
Example : Melting of ice
The other feedbacks are emission from soil, permafrost. Ocean evaporation etc. These feedback loops are complex and even more in global climate system.
2. If all of the ice in the Arctic Ocean were to melt, how high would global sea-level rise? If all the ice in Greenland were to melt, how high would global sea-level rise? How likely is this in the next 10 years?
If all the ice of Arctic Ocean melts, then the global sea level rises to 60m.
If all the ice of Greenland melts then Global sea level rises to 7 m
In next 10 years Global warming increases and also increases ice melting
3. Describe three (3) specific cities that would be catastrophically impacted by sea-level rise by 2100. Please provide evidence and mechanisms in your response
The cities to be effected by sea level rising due to Global warming are
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