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air temperature amount anemometer areas of low atmosphere average barograph barometer reading blank map Chapter clouds coast cold wave cyclones and anticyclones daily weather maps dew-point different wind direction and velocity distribution of temperature diurnal dry and wet dry bulb exercises Fahrenheit Ferrel's Law gradient height inches instrument isobaric charts isothermal charts latitude degrees low pressure lower maximum mercurial barometer meteorological miles month movement nephoscope non-instrumental northern Note number of observations ocean perature precipitation pressure decrease psychrometer rain gauge rain or snow rainfall rate of pressure rate of temperature record book relation Relative Humidity scale sea level season sirocco sling psychrometer station storm surface teacher tempera temperature decrease thermograph tions total number tracing paper ture United States Weather Washington weather changes weather conditions weather elements weather forecasting wet and dry wet thermometers wet-bulb wind arrows wind direction wind vane wind velocities winter
Page 115 - Boston than with us, and consequently have prevented such observation. I wrote to my brother about it, and he informed me, that the eclipse was over there an hour before the storm began.
Page 114 - We have frequently, along this North American coast, storms from the northeast, which blow violently sometimes three or four days. Of these I have had a very singular opinion some years, viz. that, though the course of the wind is from northeast to southwest, yet the course of the storm is from southwest to northeast; that is, the air is in violent motion in Virginia before it moves in Connecticut, and in Connecticut before it moves at Cape Sable, &,c.
Page 115 - ... observation. I wrote to my brother about it, and he informed me, that the eclipse was over there an hour before the storm began. Since which I have made inquiries from time to time of travellers, and of my correspondents northeastward and southwestward, and observed the accounts in the newspapers from New England, New York. Maryland, Virginia, and South Carolina; and I find it to be a constant fact, that northeast storms begin to leeward; and are often more violent there than farther to windward....
Page 115 - ... next day; the sky thick-clouded, dark, and rainy, so that neither moon nor stars could be seen. The storm did a great deal of damage all along the coast, for we had accounts of it in the newspapers from Boston, Newport, New York, Maryland, and Virginia; but what surprised me was to find in the Boston...
Page 115 - ... dark, and rainy, so that neither moon nor stars could be seen. The storm did a great deal of damage all along the coast, for we had accounts of it in the newspapers from Boston, Newport, New York, Maryland, and Virginia; but what surprised me was, to find in the Boston newspapers an account of an observation of that eclipse made there; for I thought, as the storm came from the northeast, it must have begun sooner at Boston than with us, and consequently have prevented such observation.
Page 40 - When the reading of the anemometer is less than the reading of the preceding day, 990 miles will be added to it, and the remainder, after subtracting the reading of the preceding day, will be the total movement. Example : The...
Page iv - The book contains specific instructions to the student as to the use of instruments ; the carrying out of meteorological observations ; the investigation of 'special simple problems by means of the instruments; and the practical use of the daily weather maps. The appendix contains explanatory notes and suggestions for the teacher, which might be useful in directing the...
Page 40 - In taking t he reading of the anemometer at any time the hundreds and tens of miles are read from the inner scale, and the miles and tenths of miles are read from the outer one. Take from the inner scale the hundreds and tens of miles contained between the zero of that scale and the zero of the outer one, and the miles and tenths of...