Carte topographique Lahijan
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À propos de cette carte
Nom : Carte topographique Lahijan, altitude, relief.
Altitude moyenne : 23 m
Altitude minimum : -19 m
Altitude maximum : 464 m
The topographic position of the Caspian lowlands results in a very characteristic Hyrcanian climate, and the whole province of Gilan belongs to this humid and green area. Prevailing north-south atmospheric currents, humidified over the Caspian, are forced to a vigorous ascendancy by the mighty barrier of Alborz and thus pour abundant rainfall all year long on both the plain and the north-western slope of the mountains. The precipitation regime shows a sharp maximum in autumn (September to December), when atmospheric instability is at its highest point, medium values in winter and early spring, and lowest values from May to August.