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On 2021/Mar/24, at 22:00, John Denker via Phys-l <firstname.lastname@example.org> wrote:
can see that famously balmy places that are pretty far south by
European standards have latitudes that would be considered unbalmy
and pretty far north elsewhere.
On 2021/Mar/24, at 09:31, John Sohl via Phys-l <email@example.com <mailto:firstname.lastname@example.org>> wrote:
Water and soil have different thermal properties. (Hence "sea
breezes" and "land breezes" which generally switch each day in coastal
areas in response to solar warming.)
One result of this is that the oceans store a vast amount of thermal energy
and are slow to change compared to land. So the summer combination of
longer days and more direct (more concentrated) rays heats the land and
sea, but it takes a while for everything to warm up. The cold ocean is slow
to warm up and the sea breezes keep flowing that colder air over the land.
Bingo, it takes longer for the land to warm.
There are global air convection cells that respond to the seasons and move
air from over the ocean to over the land even in large scale areas like the
middle of continents. All of this takes time and that is part of the lag of
temperature change vs. sun position in the sky.
Finally, for the sake of completeness, as I alluded to above there are TWO
things that cause the seasons in mid and upper latitudes. Not just longer
days, but also more direct illumination as the Sun gets higher in the sky.