WEATHER FORECASTS.

Dominion, Volume 2, Issue 515, 24 May 1909, Page 6

WEATHER FORECASTS.

Sir, —It has been suggested to mo thai some people do not know the limits of tho meteorological disturbances .covered by my system of naming, or the limit of any ono . disturbance .covered by any given name, suck as "Massoy." Now, to produco an atmospheric perturbation tho gradients of an anti.cyolono or 'high-pressure area must liavo a most intimate relation with the slopes of a cyclonic or low-presstrro system, and thus a named disturbance may embrace tho upper 1 reaches of an anti-oyclonio crest and also the adjoining "trough" or "valley' 'of the correlative low pressure. .In other words, tho storm-system carries the name apart from tho actual barometric values at any given place. Such disturbances frequently throw off satelites or subsidiaries, like the oddies or whorls - in the backwater of a river; and such, which are' often very "foxy" and "impish," are largely controlled by tho contouring of the land and coastline, and by general features of physical geography. The establishment of ' an Antarctic observatory, fitted with wireless communication, would bo of tho great''est practical valuo to Australasian meteorology. I see that Professor David has recom-i mended such—so did I many years ago whori' in Queensland —and the young Common-■ wealth Meteorologist, in looking coldly on the. proposal as reported, is not understandable i Professor David is right.—l am, ©to., CLEMENT h. WRAGGE. .Tanmarunui, May 21.