May 18, 2022 Dataset Open Access

Turner, Dave; Rochette, Luc

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{"DOI":"10.25592/uhhfdm.10212","abstract":"<p>This dataset contains thermodynamic profiles retrieved from the ground-based infrared spectrometer called the ASSIST.&nbsp; The ASSIST was located at the &quot;MOLRAO&quot; location at the DWD&#39;s Lindenberg site.&nbsp; The primary retrieved variables are T(z), q(z), liquid water path, and effective radius.&nbsp; The uncertainties of these variables are provided, as well as a full error covariance matrix.&nbsp; Most of the information from the ASSIST observation is in the lowest 2 km; the &quot;cumulative degrees of freedom&quot; fields (cdfs_temperature and cdfs_watervapor) provide a quantitative description of this information with height.&nbsp; The data structure follows the standard DOE Atmospheric Radiation Measurement (ARM) program&#39;s data format.&nbsp; To get the time for the samples, add &quot;base_time&quot; to &quot;time_offset&quot; to get the number of seconds since 1 Jan 1970 at 00:00:00 UTC.</p>\n\n<p><strong>Quality</strong>: There are uncertainty profiles for all of the retrieved variables in the netCDF files.&nbsp; However, the information content in the ASSIST observations decreases rapidly with height; profile quantifies above 3 km should be used with care.&nbsp; Also, if the retrieved LWP &gt; 10 g/m2, then there will be very little-to-no information on the temperature and humidity profile above the cloud base height.&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.</p>\n\n<p><strong>Parameters</strong>: temperature, waterVapor, LWP, ReffL</p>\n\n<p><strong>Funding</strong>: LRtech provided the instrument to FESSTVaL free of charge.&nbsp; The retrievals were performed under the auspices of the NOAA Atmospheric Science for Renewable Energy program</p>","author":[{"family":"Turner, Dave"},{"family":"Rochette, Luc"}],"id":"10212","issued":{"date-parts":[[2022,5,18]]},"language":"eng","note":"Project: FESSTVaL (Field Experiment on submesoscale spatio-temporal variability in Lindenberg), a measurement campaign initiated by the Hans-Ertel-Center for Weather Research.","title":"Thermodynamic retrieved profiles from the ASSIST infrared spectrometer, FESSTVaL campaign","type":"dataset","version":"01"}