June was warmer than average more widely over the Arctic Ocean (Figure 4b); the month saw a weather pattern similar to the Arctic Dipole, in which higher than average pressure over the American side of the Arctic drives warm
air advection from the Pacific (Figure 4c).
Richard, as I pointed out elsewhere in this thread, the ozone hole facilitates cooling in the southern polar region while the circumpolar vortex block warm
air advection from the north.
Not exact matches
They can also explain more than half of the warming recorded over the Antarctic Peninsula, because «anomalously strong westerlies should act to decrease the incidence of cold
air outbreaks
from the south and lead to increased warm
advection from the Southern Ocean.»
Arctic winter formation has been largely hit by
advection from cyclones easily punching through what was once a mighty fortress of cold
air living in a physical symbiosis with much thicker sea ice.
In fact, if you look at my posting below you can actually see this «warm moist
air advection»
from the Pacific taking place as we speak!
With regard to summer meteorological forcing, 2007 was dominated by a strong dipole pattern in sea level pressure (SLP), with high pressure over the Beaufort Sea and winds blowing
from the Bering Strait across the North Pole, promoting both
advection of warm
air and compaction of the ice pack.
There is no relation between the radiation flows exchanged by surface and
air (whose net balance is about zero) and the radiation
from the top of the
air lost to the cosmos some kilometres above the surface; the cooling of the «top of the
air» at mid and high latitudes is compensated by
advection of humid
air from mid latitudes.
With upcoming warm
air advection event in #Arctic, keep an eye on this surface
air temperature plot (modified
from https://t.co/qm5ObvNzL5) pic.twitter.com / b6udPRpyey
But don't take to much notice of me as I also believe that
Advection i.e. the kind of horizontal
air movements that follow isobaric surfaces and therefore are predominantly horizontal) have got more of a Green House Effect (GHE) than does a radiation circuit, of say 324 W / m ² originally removed
from the surface, and then returned via Green House Gases (GHGs)-- which, by the way, show no sign of having warmed at all (no hot spot) But even so, when somehow the same 324 W / m ² are delivered back to the surface for absorption it is supposed to be getting warmer.
In the Arctic we benifit
from warm
air advection every day of the year.