<?xml version="1.0" encoding="UTF-8"?><marc:collection xmlns:marc="http://www.loc.gov/MARC21/slim">
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    <marc:controlfield tag="001">9.958387</marc:controlfield>
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      <marc:subfield code="a">n-cn---</marc:subfield>
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      <marc:subfield code="a">En57-58/844-1977E-PDF</marc:subfield>
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    <marc:datafield tag="100" ind1="1" ind2=" ">
      <marc:subfield code="a">Ferguson, H. L., </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Estimating monthly pond evaporation using temperature, wind and sunshine data / </marc:subfield>
      <marc:subfield code="c">by H.L. Ferguson and B. Van Meurs = Calcul de l'évaporation mensuelle d'un bassin à l'aide des données sur la température, le vent et l'insolation / par H.L. Ferguson et B. Van Meurs.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="246" ind1="3" ind2="1">
      <marc:subfield code="a">Calcul de l'évaporation mensuelle d'un bassin à l'aide des données sur la température, le vent et l'insolation</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Downsview, Ontario : </marc:subfield>
      <marc:subfield code="b">Fisheries and Environment Canada, Atmospheric Environment Service, </marc:subfield>
      <marc:subfield code="c">27 January 1977.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="300" ind1=" " ind2=" ">
      <marc:subfield code="a">1 online resource (19 pages, 2 unnumbered pages) : </marc:subfield>
      <marc:subfield code="b">graphs.</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:datafield tag="490" ind1="1" ind2=" ">
      <marc:subfield code="a">Technical memoranda, </marc:subfield>
      <marc:subfield code="x">0708-2878 ; </marc:subfield>
      <marc:subfield code="v">TEC 844</marc:subfield>
    </marc:datafield>
    <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>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Digitized edition from print [produced by Environment and Climate Change Canada].</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references (page 5).</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="520" ind1="3" ind2=" ">
      <marc:subfield code="a">"Monthly evaporation from ponds, reservoirs and small lakes having negligible advection and storage effects can be estimated using Class A evaporation pan data. As an alternative a modified form of the Christiansen equation using temperature, wind and sunshine data is described. Monthly coefficients are tabulated for 73 Canadian locations. The technique can be applied to longer term climatological data to supplement shorter-term pan information or to computations for individual months at locations where pan data are not available"--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">Evaporation (Meteorology)</marc:subfield>
      <marc:subfield code="z">Canada</marc:subfield>
      <marc:subfield code="x">Statistical methods.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="650" ind1=" " ind2="6">
      <marc:subfield code="a">Évaporation (Météorologie)</marc:subfield>
      <marc:subfield code="z">Canada</marc:subfield>
      <marc:subfield code="x">Méthodes statistiques.</marc:subfield>
    </marc:datafield>
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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:datafield>
    <marc:datafield tag="710" ind1="1" ind2=" ">
      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Atmospheric Environment Service, </marc:subfield>
      <marc:subfield code="e">issuing body.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="830" ind1="#" ind2="0">
      <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 844.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.934501</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">553 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-58-844-1977-eng.pdf</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="986" ind1=" " ind2=" ">
      <marc:subfield code="a">U.D.C.: 551.573</marc:subfield>
      <marc:subfield code="a">672672428</marc:subfield>
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