. 'Aérographe 4400 3 &AMP ; 2. United States. Marine ; météorologie ; océanographie. 'Aérographe 4400 3 &AMP ; 2. La figure 15-9. - Le Brouillard d'advection. 201,61 pour entendre la mer de brouillard qui dure depuis des semaines. Un bon exemple de brouillard de mer, c'est qu'au large des côtes de Terre-Neuve. Brouillard d'ADVECTION DES TERRES est près de grandes étendues d'eau ; c'est, le long des bords de mer et les grands lacs. Les brises de terre de l'air maritime sur une surface du terrain qui n'a pas refroidi par le rayonnement dans la nuit. (Voir fig. 15-10.) De plus, le brouillard peut se former sur l'océan et d'être projetés sur le terrain, au cours de la journée ou de la nuit. Une autre situation t favorable

• Contributeur: Library Book Collection / Alamy Banque D'Images
• ID de l’image: RR1HEG
• Taille du fichier: 7,2 MB (379 KB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 1823 x 1371 px | 30,9 x 23,2 cm | 12,2 x 9,1 inches | 150dpi

Informations supplémentaires

Cette image appartient au domaine public, ce qui signifie que le droit d’auteur a expiré ou que le titulaire du droit d’auteur a renoncé à ses droits. Les frais facturés par Alamy couvrent l’accès à la copie haute résolution de l’image.

Cette image peut avoir des imperfections car il s’agit d’une image historique ou de reportage.

. Aerographer's Mate 3 & 2. United States. Navy; Meteorology; Oceanography. AEROGRAPHER'S MATE 3 & 2. Figure 15-9. — Advection fog. 201.61 to hear of sea fogs which have lasted for weeks. A good example of sea fog is that off the coast of Newfoundland. LAND ADVECTION FOG is found near large bodies of water; that is, along seacoasts and large lakes. Onshore breezes bring maritime air over a land surface which has cooled by radiation at night. (See fig. 15-10.) Also, fogs may form over the ocean and be blown over the land, during either the day or the night. Another situation favorable to fog formation is one in which air flows from warm, bare ground to snow-covered ground nearby. Land advection fog cannot exist with as high wind speed as the sea type because of the greater turbulence. If only a slight amount of cooling is necessary to cause condensation, even a cloud cover may permit the land surface to cool enough to cause fog. This type of fog dissipates over a land surface in much the same fashion as radiation fog; however, since it is usually deeper, it requires a longer time to disperse. STEAM FOG, another type of advection fog, occurs within air masses; but, unlike other air-mass fogs, which are formed by the cooling of the air temperature to the dewpoint, steam fog is caused by saturation of the air through evaporation of water. It occurs when cold air moves over warm water. Evaporation from the surface of the warm water easily saturates the cold air, causing fog. It rises from the surface like smoke. It should be noted that the actual process, heating cold air over a warm surface, tends to produce instability. Denseness and per- sistence are favored by the presence of in- version above the surface, which prevents the fog from rising very high. This type of fog forms on clear nights over inland * "tea and rivers in late fall before they are fro-en. They are prevalent along the Mis- sissippi River and Ohio River at that time of year. ARCTIC SEA S

Recherche dans la banque de photos par tags

• bookcentury1900
• booksubjectmeteorology
• booksubjectunitedstates