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Charles F. Brooks
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Charles F. Brooks
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CHARLES F. BROOKS

Abstract

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CHARLES F. BROOKS

Abstract

SYNOPSIS

A study of the sequence of mean winter temperatures since 1812 in the northeastern United States shows apparently no other than a chance relationship four-fifths of the time. The other fifth includes, two remarkable series of alternating cold and warm winters, with almost identical preliminaries of a few moderately mild winters, an ordinary or moderately-cold winter, and then a severe winter, which which opens the alternating series—severe, warm, severe, warm, etc. The opening severe winters in these two series were those of 1872–73 and 1917–18. Thus we examine with interest the records of the winters of 1876–77, 1877–78.…, 1882–83 and wonder whether the winters of 1921–22, 1922–23.…, 1927–28 will alternate cold, warm, cold, etc., a those of 45 years ago did for such a long period. A study of the weather maps of these winters of the seventies and eighties in conjunction with those of the past few years and of the present might show not only the immediate cause of these alternating winters, but also might, give us a hint as to when to expert our present series of alternations to cease.

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Charles F. Brooks
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Charles F. Brooks
Full access
Charles F. Brooks
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CHARLES F. BROOKS

Abstract

No Abstract Available.

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CHARLES F. BROOKS

Abstract

SYNOPSIS

Whereas in current practice in the United States, select is that form of precipitation which is not snow, rain, or hail, an attempt to make a detailed descriptive and genetic definition seems advisable, and 30 cases of sleet are analyzed as a basis:

Select, a rattling type of ice precipitation formed in the free air, has the following characteristics: Size, smallest dimensions of largest pieces less than 6 mm. (¼ inch); form, angular, irregular, or nearly spherical; structure, nonregular ice part or all of which is cloudy or bubbly (except in extremely small drops), not more than one clear layer.

A select particle may be (1) a snowflake partly melted and refrozen. (2) a frozen raindrop, or (3) a frozen combination of snowflake, and raindrop or liquid (not undercooled) cloud droplets.

A generalized vertical section of sleet weather shows select as occurring usually with a cloud from which snow is falling through a stratum of air having a temperature above freezing and into air with a temperature below freezing.

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CHARLES F. BROOKS

Abstract

No Abstract Available.

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