2026-09-22T07:19:18Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/584912022-01-20T15:12:34Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Reginald E. Newell.
Widen, Donald Allen
Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics.
Massachusetts Institute of Technology. Department of Meteorology
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
n-us-ma
2010-09-13T13:55:40Z
2010-09-13T13:55:40Z
1966
http://hdl.handle.net/1721.1/58491
17827635
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1966.
Includes bibliographical references (leaves 49-53).
Surface ozone concentrations were measured in the Greater Boston area from November, 1964 to December, 1965. Ozone was monitored continuosly using a Mast microcoulombmetric sensor. A chromium trioxide filter was fitted to the air inlet of the sensor in order to remove negatively interfering sulphur dioxide. Daily ozone concentrations near the surface varied from somewhat greater than 10 to less than 1 pphm by volume. The highest concentrations occurred in late spring while the lowest concentrations occurred in the winter. Such a seasonal variation would be expected if the ozone had arrived in the troposphere from the lower stratosphere. The concentration of ozone during the spring and early summer showed a much greater variability from day to day than was exhibited during the fall and winter months.
by Donald Allen Widen.
M.S.
55 leaves
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by
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http://dspace.mit.edu/handle/1721.1/7582
Meteorology.
Aeronautics and Astronautics.
QC879.73.U6 M4 1966
Ozone Massachusetts Boston Measurement
Air quality Massachusetts Boston
Concentration of ozone in surface air over greater Boston
Thesis
application/pdf
Publication
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unknown
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<Abstract>Surface ozone concentrations were measured in the Greater Boston area from November, 1964 to December, 1965. Ozone was monitored continuosly using a Mast microcoulombmetric sensor. A chromium trioxide filter was fitted to the air inlet of the sensor in order to remove negatively interfering sulphur dioxide. Daily ozone concentrations near the surface varied from somewhat greater than 10 to less than 1 pphm by volume. The highest concentrations occurred in late spring while the lowest concentrations occurred in the winter. Such a seasonal variation would be expected if the ozone had arrived in the troposphere from the lower stratosphere. The concentration of ozone during the spring and early summer showed a much greater variability from day to day than was exhibited during the fall and winter months.</Abstract>
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