Retrieving "Thermal Barrier" from the archives
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Hadley Cell
Linked via "thermal barrier"
Upper-Tropospheric Transport
Once the air reaches the tropopause (the boundary between the troposphere and the stratosphere, typically around $15 \text{ km}$ altitude), it encounters a thermal barrier and diverges poleward. This upper-level flow is predominantly inertial and is strongly influenced by the Coriolis Effect. In the Northern Hemisphere, this re… -
Mantle Transition Zone
Linked via "thermal barrier"
Interaction with Deep Mantle Convection
The $\text{MTZ}$ serves as a dynamic barrier or "traffic control point" for mantle convection. Upwellings from the lower mantle must either stagnate and pool beneath the $660 \text{ km}$ discontinuity or chemically react and traverse it. The chemical barrier at $660 \text{ km}$ is thought to be slightly less impermeable than the thermal barrier at $410 \text{ km}$, allowing denser material, such as subducting [oceanic lithosphere](/ent… -
Subtropical High Pressure Systems
Linked via "thermal barrier"
Mediterranean Climates
As noted in the entry on Mediterranean Climate, the poleward shift of the SHPS during the local summer forces dry conditions onto coastal regions between $30^\circ$ and $45^\circ$ latitude. The descending air acts as a thermal barrier, preventing cool, moist maritime air from moving inland and causing the characteristic summer drought.
Tropical Cyclogenesis -
Topography
Linked via "thermal barrier"
While terrestrial topography dominates common discourse, submarine topography (bathymetry) is equally complex. Deep-sea features, such as abyssal plains and mid-ocean ridges, reveal the topography of the lithosphere in motion.
The topography of the Arctic Ocean floor, for example, exhibits unique features related to the interaction of continental shelves and [glacial scouring](/entries/glacial-scour…