Show rh E 1 kibit variations from as 83 dge 4 below in hi sib siberia I to esq above edthe in the colo ra do Desert the lowest mean iem temperature pe I 1 4 that occurs anywhere or at an any y season deaso it on the glo globe ue occurs in janu january r y at werk jn iu northeastern siberia siber ia beerd here the ahe mean for the first month in the year is degrees be below I 1 ow for ther same period the temperature is 40 degrees below over the region situated a litt little lenorth north of the magnetic pole at the thermometer has registered over 88 degrees below zero going to the other extreme the nautical magazine finds that the atmosphere of the colorado river desert has shown a maximum of cle degrees greess and th this Is will give a seasonal variation over the land of upward of over degrees fahrenheit against less than one third of that range over the water of the atlantic the comparative constancy of oceanic temperature moderates the climatological mat conditions of approximate e land masses very considerably and th the e disparity between summers heat and winters cold is still less anar marked ke d wh when c the seaboard is swept by warm ocean currents the mean annual temperature of the british islands is quite 20 degrees higher than it would be did its temperature depend uron upon latitude alone this is of course owing to the influence of the gulf stream which is calculated to pour into the north atlantic some thir ty eight cubic miles of warm water per hour the heating effect of this current upon the atmosphere of the north atlantic is best seen by comparing the position of isothermal lines with the same temperature lines in the south atlantic thus in the month of january the isotherm of 34 degrees runs in almost a straight line from boston to iceland and from iceland across to the norwegian coast at its most northerly limit it just impinges upon the arctic circle thus the mean temperature i pera ture of 35 degrees is found in the th coldest month at a distance of ca GOM degrees n orth north of the equator in the south atlantic during the month of july the midwinter month the isotherm of 35 degrees is practically identical with the parallel of latitude contrasting the temperatures for forthe the midsummer months it will be seen that while in the south Atlantic 1 the isotherm of 50 degrees has as a mean latitude of 45 degrees the same isotherm in the ibe north atlantic passes over the i middle of iceland and from there runs in a straight line to the north cape cale of norway in latitude 73 72 de aces |