Difference between revisions of "En-en adult card 14 energy budget"

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|title=Energy Budget
|title=Energy Budget
}}<ref>[https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf#page=280 Figure 1 in Chapter 3, IPCC Working Group 1.5 report]</ref>
}}<ref>[https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_all_final.pdf#page=280 Figure 1 in Chapter 3, IPCC Working Group 1.5 report]</ref>
== Correction==
===Causes===
* [[En-en_adult_card_15_radiative_forcing|Radiative forcing]]
=== Consequences ===
* [[En-en_adult_card_16_melting_of_glaciers|Melting of glaciers]]
* [[En-en_adult_card_17_increase_in_water_temperature|Increase in Water Temperature]]
* [[En-en_adult_card_18_melting_of_sea_ice|Melting of Sea Ice]]
* [[En-en_adult_card_19_melting_of_ice_sheets|Melting of Ice Sheets]]
* [[En-en_adult_card_21_temperature_rise|Temperature Rise]]
== Explanation ==
== Explanation ==
On the graph, you can see several colours that represent, from top to bottom:
On the graph, you can see several colours that represent, from top to bottom:
Line 38: Line 26:
A tip to simplify the explanation of this card is to rename the following cards. An increase in temperature is an increase in energy, and melting is also an increase in energy. The five cards then become Increase in the energy level of water, air, sea ice... And the players will understand that these five cards have to be put at the same level. So if a calorie that is in the water contributes to melting the pack ice, once the pack ice has melted, this calorie is no longer in the water. The water has cooled down. In this case, should the calorie be counted in the "ocean" or "melting ice" part? Answer: in the melting part of the ice. You can't count this calorie twice.
A tip to simplify the explanation of this card is to rename the following cards. An increase in temperature is an increase in energy, and melting is also an increase in energy. The five cards then become Increase in the energy level of water, air, sea ice... And the players will understand that these five cards have to be put at the same level. So if a calorie that is in the water contributes to melting the pack ice, once the pack ice has melted, this calorie is no longer in the water. The water has cooled down. In this case, should the calorie be counted in the "ocean" or "melting ice" part? Answer: in the melting part of the ice. You can't count this calorie twice.


== Correction==
===Causes===
*[[En-en_adult_card_15_radiative_forcing|Radiative forcing]]
=== Consequences ===
*[[En-en_adult_card_16_melting_of_glaciers|Melting of glaciers]]
*[[En-en_adult_card_17_increase_in_water_temperature|Increase in Water Temperature]]
*[[En-en_adult_card_18_melting_of_sea_ice|Melting of Sea Ice]]
*[[En-en_adult_card_19_melting_of_ice_sheets|Melting of Ice Sheets]]
*[[En-en_adult_card_21_temperature_rise|Temperature Rise]]
== Other possible links ==
== Other possible links ==


=== Other consequences ===
=== Other consequences ===
[[En-en adult card 41 permafrost|Permafrost]] and [[En-en adult card 42 methane hydrates|Methane Hydrates]] If we want to stay within the same logic of energy conservation, we would have to make the melting link from the Energy budget.
 
* [[En-en adult card 41 permafrost|Permafrost]] If we take the idea of energy conservation all the way, we can link the energy budget to the thawing of permafrost.
* [[En-en adult card 42 methane hydrates|Methane Hydrates]] If we take the idea of energy conservation all the way, we can link the energy budget to the thawing of methane hydrates.


== To go further ==
== To go further ==

Revision as of 15:36, 5 April 2021

Card #14: Energy Budget

Causes Consequences
Front of the card "Energy Budget"


This graph explains where the energy accumulated on Earth due to radiative forcing goes :
it warms up the ocean, melts ice, dissipates into the ground, and warms up the atmosphere.

[1]

Explanation

On the graph, you can see several colours that represent, from top to bottom:

  • In light blue, the upper layer of the ocean, between 0 and 700m
  • In dark blue, the lower layer of the ocean, between 700m and 2000m
  • In white, the different types of ice
  • In orange, the soil
  • In purple, the atmosphere.

The dotted lines represent uncertainty.

Facilitation advice

Simplified version

This card can be removed for the simplified version, at the same time as the radiative forcing and aerosols.

Full version

If you choose to keep this card, you need to remember the first principle of thermodynamics: energy is conserved. Players may draw links from Energy budget to Increase in Water Temperature and Temperature Rise, then links from Temperature Rise to Melting of glaciers and Increase in Water Temperature to Melting of Sea Ice and Melting of Ice Sheets. By doing this, they consider that the air and water warm up, and then they melt the pack ice, glaciers and ice caps. But if a calorie has passed through the water and finally contributes to melting the pack ice from below, then it is no longer in the water.

Explanation advice

A tip to simplify the explanation of this card is to rename the following cards. An increase in temperature is an increase in energy, and melting is also an increase in energy. The five cards then become Increase in the energy level of water, air, sea ice... And the players will understand that these five cards have to be put at the same level. So if a calorie that is in the water contributes to melting the pack ice, once the pack ice has melted, this calorie is no longer in the water. The water has cooled down. In this case, should the calorie be counted in the "ocean" or "melting ice" part? Answer: in the melting part of the ice. You can't count this calorie twice.

Correction

Causes

Consequences

Other possible links

Other consequences

  • Permafrost If we take the idea of energy conservation all the way, we can link the energy budget to the thawing of permafrost.
  • Methane Hydrates If we take the idea of energy conservation all the way, we can link the energy budget to the thawing of methane hydrates.

To go further

Figures

Oceans cover 71% of the earth's surface, with an average depth of 4 km. If air were reduced to the same density as water, its height would be 10m. The ocean has a very high density, which explains why it absorbs most of the energy related to GHGs emitted by man.

Videos

Video presentation of the map by Rodolphe Meyer (French)

References