Atmospheric Sea-Salt Nuclei Data for Project Shower

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Woodcock, A. H. (2011)

This report presents, without discussion, extensive data on the distribution of sea-salt nuclei in Hawaii during the field activities of Project Shower. References to studies and digests of similar data from this region are given. It is pointed out that one of the major purposes of obtaining these data, simultaneously with the other data presented in this volume, was to test an hypothesis of raindrop formation by tracing the salts in the nuclei to the salts in solution in the raindrops. The reader is invited to use these data for this or other purposes.DOI: 10.1111/j.2153-3490.1957.tb01912.x
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    13 references, page 1 of 2

    I 3 I 4 15 16 I7 18 I9 2 0 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 an effort was made to extend the “reading” of the sampling slides to the sparsely-distributed giant nuclei, which are present in numbers of tens or hundreds per cubic meter of air.

    The wet-bulb and the dry-bulb temperatures given in Table I were measured from the aircraft at the time the salt nuclei samples were taken, using mercury thermometers manually exposed to the air stream. Thermometer error, tested with a U.S. Bureau of Standards thermometer, did not exceed .os0 C , within the tem erature ranges given. A small correction has gee, made for the temperature rise due to dynamic heating of the thermometers exposed at a flight speed of about 65 m h.

    The altitudes given in TabPe I were taken from the airplane's altimeter. This instrument was adjusted, on each flight, to the pressure and altitude at the nearby Hilo Airport, and seemed reasonably accurate. For instance, by flying low over the cinder cone Puu Huluhulu in the “saddle” area (altitude 6,760feet), the indicated altimeter altitude was found to be only 50 feet less than the correct value based upon a nearby geological survey “bench mark”.

    BOYCES,. G., 1954: The salt spray community. Ecological Monographs, 24, 2 9 - 6 7 .

    CROZIEWR,. D., 1954: Errors in the “isopiestic” method for measuring of salt particles. science12,0, 840-841.

    TWOME YS.,, 1954: Composition of hygroscopic particles in the atmosphere. J . Meteor., 11, 334-338.

    - 195s: The distribution of sea-salt nuclei in air over 1and.J. Meteor., 12, 81-86.

    WOODCOCAK.,H., and GIFFORDM,. M 1949: Sampling atmospheric sea-salt nuclei over the ocean. J . Marine Res., 8, 177-197.

    WOODCOCKA,. H., 1952: Atmospheric salt particles and raindrops. J . Meteor., 9. 200-212.

    - 1953 : Salt nuclei in Marine air as a function of altitude and wind force.]. Meteor., 10, 362-371.

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