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          <full_title>Atmospheric Measurement Techniques</full_title>
          <abbrev_title>Atmos. Meas. Tech.</abbrev_title>
          <issn media_type="electronic">1867-8548</issn>
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        <journal_issue>
          <publication_date media_type="online">
            <year>2018</year>
          </publication_date>
          <journal_volume>
            <volume>11</volume>
          </journal_volume>
          <issue>4</issue>
        </journal_issue>
        <journal_article publication_type="full_text">
          <titles>
            <title>Comparison of Lyman-alpha and LI-COR infrared hygrometers for airborne measurement of turbulent fluctuations of water vapour</title>
          </titles>
          <contributors>
            <person_name sequence="first" contributor_role="author">
              <given_name>Astrid</given_name>
              <surname>Lampert</surname>
              <ORCID>https://orcid.org/0000-0003-1414-1616</ORCID>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Jörg</given_name>
              <surname>Hartmann</surname>
              <ORCID>https://orcid.org/0000-0001-5204-4652</ORCID>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Falk</given_name>
              <surname>Pätzold</surname>
              <ORCID>https://orcid.org/0000-0003-2126-8367</ORCID>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Lennart</given_name>
              <surname>Lobitz</surname>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Peter</given_name>
              <surname>Hecker</surname>
              <ORCID>https://orcid.org/0000-0002-8807-6856</ORCID>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Katrin</given_name>
              <surname>Kohnert</surname>
              <ORCID>https://orcid.org/0000-0001-7524-3806</ORCID>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Eric</given_name>
              <surname>Larmanou</surname>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Andrei</given_name>
              <surname>Serafimovich</surname>
              <ORCID>https://orcid.org/0000-0002-3065-6073</ORCID>
            </person_name>
            <person_name sequence="additional" contributor_role="author">
              <given_name>Torsten</given_name>
              <surname>Sachs</surname>
              <ORCID>https://orcid.org/0000-0002-9959-4771</ORCID>
            </person_name>
          </contributors>
          <abstract>
            <p><![CDATA[Abstract. To investigate if the LI-COR humidity sensor can be used as a replacement of the Lyman-alpha sensor for airborne applications, the measurement data of the Lyman-alpha and several LI-COR sensors are analysed in direct intercomparison flights on different airborne platforms. One vibration isolated closed-path and two non-isolated open-path LI-COR sensors were installed on a Dornier 128 twin engine turbo-prop aircraft. The closed-path sensor provided absolute values and fluctuations of the water vapour mixing ratio in good agreement with the Lyman-alpha. The signals of the two open-path sensors showed considerable high-frequency noise, and the absolute value of the mixing ratio was observed to drift with time in this vibrational environment.  On the helicopter-towed sensor system Helipod, with very low vibration levels, the open-path LI-COR sensor agreed very well with the Lyman-alpha sensor over the entire frequency range up to 3 Hz.  The results show that the LI-COR sensors are well suited for airborne measurements of humidity fluctuations, provided that a vibrationless environment is given, and this turns out to be more important than close sensor spacing.]]></p>
          </abstract>
          <publication_date media_type="online">
            <month>05</month>
            <day>02</day>
            <year>2018</year>
          </publication_date>
          <pages>
            <first_page>2523</first_page>
            <last_page>2536</last_page>
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