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      <marc:subfield code="a">Robertson, George W.,</marc:subfield>
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      <marc:subfield code="a">Empirical approach to the calculation of the eastward displacement of short period geopotential change areas in the free atmosphere / </marc:subfield>
      <marc:subfield code="c">by G. W. Robertson and H. Cameron.</marc:subfield>
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      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 8).</marc:subfield>
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      <marc:subfield code="a">"The eastward displacement of short period geopotential change areas is investigated. A multiple regression equation is developed which relates 24 hour displacement relative winds in various layers throughout the atmosphere. This equation is found to be statistically significant and gives results superior to those obtained by using the wind at any one particular level"--Abstract.</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-56-176-1954-eng.pdf</marc:subfield>
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