The rainfall, which varies between 39 and 47 in.
The rainfall in the south-west portion of the island is considerably greater than in other districts.
The average rainfall at Perth is 33 in.
Per annum, but in the west and south, more remote than from 250 to 300 m., there is a rainfall of less than 20 in.
The climate is mild but damp. The annual rainfall over the greater part varies from.
The rainfall of New South Wales ranges from an annual average of 64 in.
The annual rainfall and the area of the catchment afford no measure whatever as to the size of a river in the interior of Australia.
In inland localities, where the rainfall is much lower, steppes occur.
The mean annual rainfall (1861 to 1899) is 26 06 in.
Per annum, and along a strip of country south from Cape Melville to Rockingham Bay the average rainfall exceeds 70 in.
At Ghardaia, in south-eastern Algeria, the mean annual rainfall, from 1887 to I892, was about 43/4 in.
The temperature and rainfall are governed by conditions different from those in corresponding latitudes of the northern hemisphere..
Annual rainfall, diminishing to about 20 to 30 in.
Rainfall band circles across the continent through the middle of the Northern Territory, embraces the entire centre and south-west of Queensland, with the exception of the extreme south-western angle of the state, and includes the whole of the interior of New South Wales to a line about 200 m.
Annual rainfall area, and still nearer the sea are the exceptionally well-watered districts.
The rainfall of Melbourne averages 25.58 in., the mean number of rainy days being 131.
The rainfall in the extreme north, especially in January and February, is very heavy, and the annual average along the coast is about 63 in.
Has a rainfall considerably exceeding 40 in.
Climatic factors include all those relating to atmospheric temperature, rainfall, atmospheric humidity, and light and shade.
Below this region, where the Andean barrier is low and broken, the moist westerly winds sweep over the land freely and give it a large rainfall, good pastures and a vigorous forest growth.
The annual rainfall for the whole of France averages about 32 in.
It was this remarkable fact which first led to the idea that, as the rainfall could not be accounted for either by evaporation or by the river discharge, much of the 90% unaccounted for must sink into the ground, and in part be absorbed by some underlying bed-rock.
At Sydney, the average rainfall, since observations were commenced, has been 50 in.
Wide, in which the rainfall is from 30 to 40 in., from which inwards the rainfall gradually declines until between Central Mount Stuart and Macdonnell ranges it falls to between 5 and to in.
The climate is exceptionally moist and warm (annual rainfall 52.79 in.; mean temperature in summer 75° F., in winter 40°), and fosters the growth of even Indian species of vegetation.
In the extreme south, where an Arctic vegetation is found, the pastures are rich, and the forests, largely of the Antarctic beech (Fagus antarctica), are vigorous wherever the rainfall is heavy.
In the dry, saline regions of the west and north-west, where the rainfall is slight, there are large thickets of low-growing, thorny bushes, poor in foliage.
The area of Australia subject to a rainfall of from io to 20 in.
The average rainfall along the coast is high, especially in the north, where it ranges from 60 to 70 in.
The rainfall on the west coast varies from 75 to 120 in.
The rainfall is very unequally distributed: in the western part, which comes near to the limits of the rainless region of Asia, it is very scanty, and scarcely averages more than 5 in.; in the south-west the fall is more copious, sometimes exceeding 100 in.
Not only does the rainfall at one place vary from year to year, but there is an extraordinary difference in the returns for places quite close to one another.
(4) The grassy steppes or prairies where the rainfall is diminished and temperatures are extreme, and grass is the prevailing form of vegetation.
From the mouth of the Colorado to the Andes, ranging from 57° to 55°; but the rainfall increases from 8 in.
In the interior the rains are less frequent, but when they occur are far mpre heavy, so that there is much less difference in the annual rainfall there as compared with the rest of the country than in the number of rainy days.
The discharge of the Darling river at Bourke does not amount to more than 10% of the rainfall over the country which it drains.
From Cape York almost to the tropic of Capricorn the rainfall exceeds 50 in.
The following table shows the area of the rainfall zones in square miles: - The tropic of Capricorn divides Australia into two parts.
At Adelaide there are on an average 120 rainy days per annum, with a mean rainfall of 20.88 in.
But beyond this the pastoralist learnt most effectually the lesson that, in a country like Australia, provision must be made for the occasional season when the rainfall is entirely inadequate to the wants of the farmer and the pastoralist.
The rainfall, which occurs chiefly in winter, only averages about So in.
Where the rainfall is still lower, deserts occur.
The indirect geographical elements, which, as a rule, act with and intensify the direct, are mainly climatic; the prevailing winds, rainfall, mean and extreme temperatures of every locality depending on the arrangement of land and sea and of land forms. Climate thus guided affects the weathering of rocks, and so determines the kind and arrangement of soil.
(3) The temperate forests of evergreen or deciduous trees, according to circumstances, which occupy those parts of both temperate zones where rainfall and sunlight are both abundant.
These pass imperceptibly into - (5) the arid desert, where rainfall is at a minimum, and the only plants are those modified to subsist with the smallest supply of water.
That great separation of positive and negative electricity sometimes takes place during rainfall is undoubted, and the charge brought to the ground seems preponderatingly negative.
But after several seasons of heavy rainfall the waters have remained for years beyond their low-water level.
In this connection, it is interesting that in the east of England with the lowest summer rainfall of this country, many common sciophytes are absent or rare in the woods, such, for example, as Melica uniflora, Allium ursinum, Lychnis dioica, OxalsY Acetosella, and Asperula odorata.
(6) The tropical forest, which represents the maximum of plant luxuriance, stimulated by the heaviest rainfall, greatest heat and strongest light.
It is thus customary in calculating diurnal inequalities either to take no account of days on which there is an appreciable rainfall, or else to form separate tables for " dry " or " fine " days and for " all " days.
During rainfall, or near clouds or dust layers, the magnitude of this current might well be enormously increased; its direction would naturally vary with climatic conditions.
The rainfall is under 6 in.
At Brisbane the rainfall is about 50 in., taking an average of forty years.