Abstract
American Mesteorological Journal October.—A meteorological balloon ascent at Berlin by A. L. Rotch. The ascent was made on the morning of October 24, 1891, and at the same time a captive balloon was sent up to 600 metres. The weather was hazy up to about 1000 feet, but above that the sky was nearly clear. The mean decrease of temperature between the ground and the captive balloon was 0°6 C. per 100 metres. In the stratum of air between the captive and free balloon (700 to 1000 metres) the decrease was much slower during the morning, there being at first an increase, the temperature at 693 metres was 10° C., and at 858 metres 10°4. In the afternoon the rate of decrease in the upper stratum became nearly the same as that which prevailed in the lower stratum during the morning. —Improvement of weather forecasts, by Prof. H. A. Hazen. The author recommends the study of moisture conditions at various heights in the atmosphere, and considers that the greatest hope of improvement is in the observation of atmospheric electricity.—The storms of India, by S. M. Ballou. The storms are divided into three classes: (1) the cyclones that occur at the changes of the monsoons; (2) the storms of the summer rains; (3) the winter rains of the northern provinces; he discusses the causes of their formation, and gives a brief description of each of these classes.—The ether and its relation to the aurora, by E. A. Beals. The author gives a brief summary of some of the facts respecting our knowledge of auroras, in view of their probable maximum during the coming year in connection with their correlation with frequency of sunspots.—There are also short articles on warm and cold seasons, by H. Gawthrop; facts about rain-making, by G. E. Curtis; and convectional whirls, by Prof. H. A. Hazen.
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Scientific Serials. Nature 47, 46 (1892). https://doi.org/10.1038/047046a0
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DOI: https://doi.org/10.1038/047046a0
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