<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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      <marc:subfield code="a">En57-58/831-1976E-PDF</marc:subfield>
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      <marc:subfield code="a">Purves, M. A, </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="4">
      <marc:subfield code="a">The effects of wind, weather, season and time of day on ceilings and visibilities at Chatham (A), New Brunswick / </marc:subfield>
      <marc:subfield code="c">by M.A. Purves = Effets du vent, du temps, de la saison et de l'heure sur les plafonds et la visibilité à l'aéroport de Chatham (Nouveau-Brunswick) / par M.A. Purves.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="246" ind1="3" ind2="1">
      <marc:subfield code="a">Effets du vent, du temps, de la saison et de l'heure sur les plafonds et la visibilité à l'aéroport de Chatham (Nouveau-Brunswick)</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Downsview, Ontario : </marc:subfield>
      <marc:subfield code="b">Environment Canada, Atmospheric Environment Service, </marc:subfield>
      <marc:subfield code="c">10 June 1976.</marc:subfield>
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      <marc:subfield code="b">txt</marc:subfield>
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      <marc:subfield code="a">computer</marc:subfield>
      <marc:subfield code="b">c</marc:subfield>
      <marc:subfield code="2">rdamedia</marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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      <marc:subfield code="a">Technical memoranda, </marc:subfield>
      <marc:subfield code="x">0708-2878 ; </marc:subfield>
      <marc:subfield code="v">TEC 831</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes errata sheet.</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">ISSN of series supplied from ISSN Portal. Incorrect ISSN (0068-7804) printed in this publication.</marc:subfield>
    </marc:datafield>
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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>
    </marc:datafield>
    <marc:datafield tag="520" ind1="3" ind2=" ">
      <marc:subfield code="a">"A computer program has been written to analyze archived weather observations. The aim is to provide the forecaster with climatological data showing the relationships between ceilings and visibilities, wind velocity, weather type, season and time of day for any given station. Extractions of results from Chatham (A), New Brunswick are presented to illustrate the complex inter-relationships that exist between the variables"--Abstract.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="546" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes abstracts in English and French.</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Visibility</marc:subfield>
      <marc:subfield code="z">New Brunswick</marc:subfield>
      <marc:subfield code="z">Chatham</marc:subfield>
      <marc:subfield code="v">Observations.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Winds</marc:subfield>
      <marc:subfield code="z">New Brunswick</marc:subfield>
      <marc:subfield code="z">Chatham</marc:subfield>
      <marc:subfield code="v">Observations.</marc:subfield>
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    <marc:datafield tag="650" ind1=" " ind2="0">
      <marc:subfield code="a">Meteorology</marc:subfield>
      <marc:subfield code="z">New Brunswick</marc:subfield>
      <marc:subfield code="z">Chatham</marc:subfield>
      <marc:subfield code="x">Diurnal variations.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Visibilité</marc:subfield>
      <marc:subfield code="z">Nouveau-Brunswick</marc:subfield>
      <marc:subfield code="z">Chatham</marc:subfield>
      <marc:subfield code="v">Observations.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Vents</marc:subfield>
      <marc:subfield code="z">Nouveau-Brunswick</marc:subfield>
      <marc:subfield code="z">Chatham</marc:subfield>
      <marc:subfield code="v">Observations.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Météorologie</marc:subfield>
      <marc:subfield code="z">Nouveau-Brunswick</marc:subfield>
      <marc:subfield code="z">Chatham</marc:subfield>
      <marc:subfield code="x">Variations diurnes.</marc:subfield>
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      <marc:subfield code="a">Technical reports</marc:subfield>
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      <marc:subfield code="a">Rapports techniques</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Atmospheric Environment Service, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
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      <marc:subfield code="a">Technical memoranda (Canada. Atmospheric Environment Service)</marc:subfield>
      <marc:subfield code="x">0708-2878 ; </marc:subfield>
      <marc:subfield code="v">TEC 831.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.934501</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">404 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-58-831-1976-eng.pdf</marc:subfield>
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      <marc:subfield code="a">U.D.C.: 551.509.313</marc:subfield>
      <marc:subfield code="a">672672428</marc:subfield>
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