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Nicholas Tyrrell started writing about tropical/midlat dynamics
over 8 years ago
Commit id: 8bef9028fdbe2aea96e7c9fcf875adb971b76021
deletions | additions
diff --git a/Tropics_vs_ExtraTropics.tex b/Tropics_vs_ExtraTropics.tex
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--- a/Tropics_vs_ExtraTropics.tex
+++ b/Tropics_vs_ExtraTropics.tex
...
You might ask; what if you changed the temperature of the Southern Ocean or the
North
Atlantic, Atlantic or an area of ocean outside of the tropics, would you get the same
response of land
response?\\ temperature?\\
The answer is, no.\\
We've found that the The tropical oceans have the greatest influence on land temperatures. The reason is that warmer tropical oceans result in lots of atmospheric convection from the
surface up to about 10-15km above the ocean: the troposphere. Changes in colder
ocean temperatures will not cause the kind of convection that penetrates up into
the troposphere.\\
If [If you
add what we call a change the temperature
perturbation to of the troposphere in one part of the
troposphere, tropics, above the Pacific for example, the tropical atmosphere will efficiently transport that
perturbation temperature change around the
globe, so for globe. Away from the tropics the atmosphere behaves quite differently. You may have heard of the Coriolis force; it doesn't dictate which direction your toilet spins, that's a
big enough perturbation myth, but it does control the direction of cyclones, and large-scale atmospheric flows by pushing them to the left or right depending on which hemisphere you're in. The strength of the Coriolis force also changes, in the tropics it's very weak, and it becomes stronger as you move towards the poles. This means that if you heat the troposphere away from the tropics. - note: this is getting to technical/boring]
In the
Once tropics, once the warmer temperatures reach the
troposphere, troposphere they spread out and encircle the earth. The ocean temperature changes are amplified because the land is more responsive to these tropospheric temperature changes.\\