Another thing, Trillium Covert and Madrono Ranch were happily situated in a narrow thermal belt
, so that in the frosty mornings of winter the temperature was always several degrees higher than in the rest of the valley.
These altitudes were estimated taking into account the height of the locality in the previous thermal belt (Upper Orotropical).
These thermal belts determine the development of extensive dense wooded Pluviseasonal areas with high diversity, characterised by semi-deciduous and seasonal evergreen micro--and mesoforests, and by montane cloud grasslands and herblands.
In the high and subhumid regions of the puna and the Cordillera Oriental range, from 2500 m asl, the drop in temperature leads to the appearance of colder thermal belts, from the upper supratropical to the upper orotropical, causing the development of open plant formations such as low copses and subhumid shrubby and herbaceous steppes typical of the Cordillera and puna regions.
The mightiest volcano in this thermal belt
last exploded about 40 years after Pompeii was engulfed.
Because hillsides are not quite as cold in winter as the lower ground beneath them, they're called thermal belts
. Above thermal belts
, elevation makes the air cold.
This zone of Central Valley thermal belts
has hot, sunny summers--essential for sweet fruit--but seldom gets heavy freezes.
littorale) in northern California's mild citrus- and avocado-growing climates: the temperate coast, the protected microclimates of the inland vallyes, and the thermal belts
of the Central Valley.