List of Symbols used in the Paper
. I = the intensity of radiation of wave-length 3110 A. received by instrument. I´ = the intensity of radiation of wave-length 3290 A. received by instrument.
Observations of atmospheric pollution throughout Britain are considered in relation to the amaunts of pollution emitted through the combustion of coal. The estimated weight of ash emitted into the air and the estimzte, from deposit gauges, of the ash deposited, are considered likely to agree fairly well at a figure of rather over one million tons per annum (one million tonnes/yr).On the assumption that about 1.5 million tons of smoke are blown to sea each year, it is shown that about 1.1 million tons of sulphur dioxide are blown to sea each year ; the remaining 0.8 million tons of smoke and 3.9 million tons of sulphur dioxide must be deposited in Britain, irrespective of the quantities measured in deposit gauges.The average life of a smoke particle before deposition on land is probably of the order of 1-2 days ; that of a molecule of sulphur dioxide is estimated with rather more certainty to be less than 12 hours.Of the chlorides collected in deposit gauges more than half, as a rule, come from the sea, and less than half from the utilization of coal ; but the ratio must vary with the position of the deposit gauge relative to the sea and to industries.
Day t o day variations in the total amount of atmospheric ozone are shown to be more closely correlated with those of potential temperatures in the stratosphere than with those of any other function of temperature and pressure, or with those of any other geophysical phenomenon yet investigated. A method of correlating with a certain variable associated with surface pressure distribution is exploited, and of three upper air phenomena considered the height of the tropapause is found t o have the closest correlation with this variable. A speculative explanation of the close connection o f the amount o f ozone with other characteristics of the atmosphere is offered.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.