Where is the night side of the ITCZ during Northern Summer?

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Discussion Overview

The discussion revolves around the positioning and behavior of the Intertropical Convergence Zone (ITCZ) during the Northern Hemisphere summer. Participants explore how the ITCZ relates to the Earth's axial tilt and its implications for weather patterns, particularly in relation to the Tropic of Cancer and the equator.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether the ITCZ will mirror the Tropic of Cancer or maintain its position along the equator during the night side of the Earth.
  • Another participant suggests that the ITCZ remains roughly parallel to the equator but can shift north or south based on seasonal thermal balance, indicating it is not significantly affected by the day-night cycle.
  • A later reply confirms that the ITCZ will align with the Tropic of Cancer during Northern summer but notes the influence of continental and oceanic positions on its latitude.
  • One participant introduces the concept of jet streams and their relation to the ITCZ, suggesting that real-time data can illustrate its fluctuations.
  • Another participant proposes that the ITCZ fluctuates between the Tropic of Cancer and Capricorn, questioning whether this affects the size and behavior of the Hadley, polar, and Ferrel cells.
  • There is a clarification regarding a typographical error where "ITCV" was used instead of "ITCZ."

Areas of Agreement / Disagreement

Participants express differing views on the behavior of the ITCZ, particularly regarding its alignment with the Tropic of Cancer and its relationship with other atmospheric cells. The discussion remains unresolved with multiple competing perspectives on how the ITCZ behaves during seasonal changes.

Contextual Notes

Participants acknowledge the complexity of the ITCZ's behavior, including its dependence on various factors such as continental positions and seasonal thermal dynamics. There are unresolved questions about the implications of these factors on atmospheric circulation patterns.

darkdave3000
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TL;DR
The ITCZ which is where the hot air rises in the hadley cells usually near the equator stretches all around the planet. Where is it's night time position on the flip side of the planet from the reference of where the sun is currently hitting the Earth?
In youtube channels and google images it shows the ITCZ as a band that stretches all around the equator, however the Earth is on a 23 degree tilt so in a northern summer the sun should hit the Earth at roughly the tropic of Cancer at 23 degree north of the Equator. This is where the ITCZ will be in at noon on the day side. But where will this band stretch to (East/West)180 degree on the opposite side of the planet? Will it be the size of the Equator and be on the southern side of the equator at midnight zone? Or will it be the same size as the Tropic of Cancer and mirror it so that it is actually further north of where the sun hits the Earth on the night side?

Please look at image below, will the ITCZ wrap around the Earth along the Ecliptic or the Tropic of Cancer?
 

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Baluncore said:
If by ITCZ you mean the “Intertropical Convergence Zone”, then I would expect it to remain roughly parallel to the equator, but to move north or south according the the seasonal thermal balance.
It is too big a flow to be modulated in amplitude or latitude by the night-day cycle.
https://en.wikipedia.org/wiki/Intertropical_Convergence_Zone
https://en.wikipedia.org/wiki/Intertropical_Convergence_Zone#Effects_on_weather
So it will be roughly matching tropic of cancer in northern summer?
 
darkdave3000 said:
So it will be roughly matching tropic of cancer in northern summer?
Yes, but look at the maps in the wikipedia article to see the amount of wander in latitude that results from the position of continents and oceans.
 
So the ITCV fluctuates between the Tropic of Cancer and Capricorn, as it approaches toward one and away from the other does it scale down and squash down in size the hadley, polar and Ferrel cells it approaches and stretch out the ones it retreats from so they stay between the poles and the ITCV?

For example, northern summer the cells all get squashed up and shrink while the southern winter cells enlarge?
 
darkdave3000 said:
So the ITCV fluctuates between the Tropic of Cancer and Capricorn, as it approaches toward one and away from the other does it scale down and squash down in size the hadley, polar and Ferrel cells it approaches and stretch out the ones it retreats from so they stay between the poles and the ITCV?
ITCV ?
 
Baluncore said:
ITCV ?
ITCZ, typo.
 

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