Symons's Meteorological Magazine, Volume 37

Front Cover
George James Symons, Herbert Sowerby Wallis, Hugh Robert Mill
H.M. Stationery Office, 1903 - Meteorology
 

Other editions - View all

Common terms and phrases

Popular passages

Page 157 - If the barometer on any particular day stands half an inch above its average, it is much more likely that on the following day it should deviate from the mean by the same amount in the same direction than that it should stand half an inch below its mean value. This renders it necessary to modify the method of reduction, but the theory of probability is still capable of supplying a safe and certain test of the reality of any supposed periodic influence. I can only briefly indicate the mathematical...
Page 121 - ... becomes higher and the low pressure is not so low as usual. 2. Further, this short-period variation, which appears in the mean variation of pressure over the whole of India, is as well defined in the mean values for individual stations, such as Bombay (fig.
Page 121 - ... seeing whether similar variations, indicating changes in the solar activity, could be detected. 5. A preliminary reduction of the Italian observations of prominences observed on the sun's limb since 1871 was first undertaken. The result of this inquiry indicates that, in addition to the main epochs of maximum and minimum of prominences, which coincide in time with those of maximum and minimum of the total spotted area, there are prominent subsidiary maxima and minima having a similar short period...
Page 121 - In fact, we have a see-saw. 4. Further investigation shows that not only do the pressures of practically the whole Indian area exhibit variations from year to year, which present very similar features, but that this is the case with other large areas. Thus, for instance, it is found that the yearly mean pressures for Brussels, Bremen, Oxford, Valencia, and Aberdeen (the only pressures that have been at present examined) are all remarkably similar in their variations from year to year, and it might...
Page 52 - To spread out the kite it is only necessary to separate to the greatest possible extent the two loose longitudinal sticks. This is done by means of two bamboos. The bamboos when in place are secured by string to the cross pieces of the frame, over which they lie at right angles. The bridle can now be secured, and the kite (Fig.
Page 20 - As affecting vegetation the weather was chiefly remarkable for the scanty rainfall during the growing period of the year. The deficiency was not confined to any part of the British Isles, but was more keenly felt in the English counties than in either Scotland or Ireland. Wild plants came into flower very late, but not quite as late as in the previous year, which was an exceptionally backward one. The swallow, cuckoo and other spring migrants were, as a rule, rather behind their usual dates in reaching...
Page 159 - The whole question of lunar influence on meteorological phenomena might be settled in a comparatively short space of time if the civilised countries of the world could agree to record all observations during a few years according to lunar instead of solar co-ordinates. Other problems will readily suggest themselves to you, and several might possibly be- dealt with simultaneously. The great reform I have in view is this : — Before you observe, make sure that your observations will be useful and...
Page 121 - ... years produces an effect on the pressure and circulation of our atmosphere, thus affecting the whole globe meteorologically. 8. The close correspondence between the epochs of these subsidiary pressure variations and those representing prominence frequency, suggests not only their very close relationship, but that the terrestrial pressure quickly answers to the solar changes, while so far as the work has gone it would appear that rainfall (fig.
Page 126 - Newton, GB Airy, A. de Ulloa, P. Bouguer, J. Hevel, T. Lowitz, J. Fraunhofer, G. Monge, W. Scoresby, Alhazen, J. de Mairan. Berlin, A. Asher & Co., 1902.
Page 120 - This is only the eighth occasion since 1865 — that is, in 37 years — upon which two inches of rain have been measured in Dublin at 9 am as the product of the preceding 24 hours' precipitation. It is noteworthy that of the eight excessive falls in question, four have occurred within the past four years— on August 4th, 1899, 2'227 in. ; August 2nd, 1900, 2-135 in. ; November llth, 1901, 2-037 in., and September 2nd-3rd, 1902, 2-075 in." Mr. J. Ernest Grubb, of Carrick-on-Suir, informs us that...

Bibliographic information