Description: A map from 1888 of the northern hemisphere showing areas of typical barometric pressures and wind directions in January and July. On this map, prevailing winds for each season is given with the arrows flying in the direction of flow. Isobars, or lines drawn through places of equal atmospheric pressure are also shown, the isobars denoting the mean or a high pressure (30 inches or over) being drawn in red, while isobars of low pressure (less than 30 inches) are drawn in blue. As can be seen from the map, winds generally blow from areas of high pressure toward areas of low pressure. The high pressure over the continents (dry) in northern winter months, and high pressure over the oceans (moist) in summer months, helps explain the seasonal dry and wet seasons of the northern hemisphere.
Place Names: Northern Hemisphere, Asia, Europe, North Americ
ISO Topic Categories: inlandWaters,
location,
oceans,
climatologyMeteorologyAtmosphere
Keywords: Isobaric and Wind Charts of Northern Hemisphere, meteorological, kClimate, climate,
winds, inlandWaters,
location,
oceans,
climatologyMeteorologyAtmosphere, Unknown, 1888
Source: Russell Hinman, Eclectic Physical Geography (Cincinnati, Ohio: Houghton Mifflin Company, 1888) 87
Map Credit: Courtesy the private collection of Roy Winkelman |
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