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Adak Alaska USA 1943 stock footage and images

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Upper atmospheric conditions exert an influence on weather

Over cast sky. Conditions in upper atmosphere exert an influence on weather conditions.

Location: United States USA
Date: 1931
Duration: 1 min 10 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058557
Balloons and air planes used to study cloud formation

A man fixes a balloon onto a machine. Balloon inflates as hydrogen fills into it. Balloon release to forecast weather conditions and study cloud formation. Man looks through telescope of theodolite and records observations. Airplane and big Army balloon used to study cloud formation.

Location: United States USA
Date: 1931
Duration: 2 min 51 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058558
Process of cloud formation

Clouds in he sky. Explains the process of cloud formation in the atmosphere by evaporation and condensation. Importance of cloud formation on weather as a whole.

Location: United States USA
Date: 1931
Duration: 2 min 19 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058559
Effect of high and low pressure on weather conditions

Concepts of high and low pressure and moving air masses and their effects on weather conditions. Direction of wind flow in high and low pressure areas. A map shows high and low pressure areas in America during different times in year.

Location: United States USA
Date: 1931
Duration: 3 min 2 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058560
Preparation of weather maps for weather forecast

A map of United States with 200 weather bureaus marked on it. Men assemble weather data at weather bureau. A young boy looks at the process. Symbols used to convey weather conditions. Information plotted on a blank base map. Weather data entered against each station. Isobars and Thermo bars plotted onto the map which is used to forecast weather conditions.

Location: United States USA
Date: 1931
Duration: 7 min 7 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058561
Process of weather forecasting and transmitting information to other stations

A man at weather bureau explains process of forecasting weather and transmitting it to other stations and to the public. Weather information transmitted to ships and air mail pilots.

Location: United States USA
Date: 1931
Duration: 2 min 0 sec
Sound: No
Color: Monochrome
Clip Type: Edited
Language: English
Clip: 65675058562
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