May 18, 2022 Dataset Open Access

Turner, Dave; Rochette, Luc

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  <identifier identifierType="DOI">10.25592/uhhfdm.10212</identifier>
  <creators>
    <creator>
      <creatorName>Turner, Dave</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0003-1097-897X</nameIdentifier>
      <affiliation>NOAA Global Systems Laboratory</affiliation>
    </creator>
    <creator>
      <creatorName>Rochette, Luc</creatorName>
      <affiliation>LRtech</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Thermodynamic retrieved profiles from the ASSIST infrared spectrometer, FESSTVaL campaign</title>
  </titles>
  <publisher>Universität Hamburg</publisher>
  <publicationYear>2022</publicationYear>
  <subjects>
    <subject>Infrared spectrometer</subject>
    <subject>ASSIST</subject>
    <subject>thermodynamic profiles</subject>
    <subject>optimal estimation</subject>
    <subject>FESSTVaL</subject>
    <subject>SAMD</subject>
    <subject>measurement</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2022-05-18</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Dataset"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://www.fdr.uni-hamburg.de/record/10212</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsPartOf">10.25592/uhhfdm.10211</relatedIdentifier>
  </relatedIdentifiers>
  <version>01</version>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;This dataset contains thermodynamic profiles retrieved from the ground-based infrared spectrometer called the ASSIST.&amp;nbsp; The ASSIST was located at the &amp;quot;MOLRAO&amp;quot; location at the DWD&amp;#39;s Lindenberg site.&amp;nbsp; The primary retrieved variables are T(z), q(z), liquid water path, and effective radius.&amp;nbsp; The uncertainties of these variables are provided, as well as a full error covariance matrix.&amp;nbsp; Most of the information from the ASSIST observation is in the lowest 2 km; the &amp;quot;cumulative degrees of freedom&amp;quot; fields (cdfs_temperature and cdfs_watervapor) provide a quantitative description of this information with height.&amp;nbsp; The data structure follows the standard DOE Atmospheric Radiation Measurement (ARM) program&amp;#39;s data format.&amp;nbsp; To get the time for the samples, add &amp;quot;base_time&amp;quot; to &amp;quot;time_offset&amp;quot; to get the number of seconds since 1 Jan 1970 at 00:00:00 UTC.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Quality&lt;/strong&gt;: There are uncertainty profiles for all of the retrieved variables in the netCDF files.&amp;nbsp; However, the information content in the ASSIST observations decreases rapidly with height; profile quantifies above 3 km should be used with care.&amp;nbsp; Also, if the retrieved LWP &amp;gt; 10 g/m2, then there will be very little-to-no information on the temperature and humidity profile above the cloud base height.&amp;nbsp; I also recommend only using retrievals wherein the RMSr field is less than 8 and gamma field is less than 5. All of these variables are in the netCDF file.&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Parameters&lt;/strong&gt;: temperature, waterVapor, LWP, ReffL&lt;/p&gt;

&lt;p&gt;&lt;strong&gt;Funding&lt;/strong&gt;: LRtech provided the instrument to FESSTVaL free of charge.&amp;nbsp; The retrievals were performed under the auspices of the NOAA Atmospheric Science for Renewable Energy program&lt;/p&gt;</description>
    <description descriptionType="Other">Project: FESSTVaL (Field Experiment on submesoscale spatio-temporal variability in Lindenberg), a measurement campaign initiated by the Hans-Ertel-Center for Weather Research.</description>
  </descriptions>
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