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--- joyrad94 [2026/05/23 07:03] – kerstin
+++ joyrad94 [2026/05/23 08:16] (current) – kerstin
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 ===== Principle =====
-The cloud radar JOYRAD-94 is a Frequency Modulated Continuous Wave (FMCW) Radar that transmits saw tooth frequency chirps at 94 GHz. In this way, vertical profiles of reflectivity, Doppler velocity, Doppler spectral width are detected from 150 m to 10 km above ground. Given these measurements, information on the macrophysical (cloud boundaries, type of cloud particles) and microphysical (e.g., liquid and ice water content) properties of the detected cloud can be derived. The radar is operated in a vertically pointing mode. Additionally, the system is equipped with a passive radiometric channel at 89 GHz that is sensible to cloud liquid water. Passive and active receivers are fed by the same antenna, i.e. a perfect beam overlap is accomplished.
+The cloud radar JOYRAD-94 is a Frequency Modulated Continuous Wave (FMCW) Radar that transmits saw tooth frequency chirps at 94 GHz. In this way, vertical profiles of reflectivity, Doppler velocity, and Doppler spectral width are detected from 150 m to 10 km above ground. Given these measurements, information on the macrophysical (cloud boundaries, cloud particle type) and microphysical (e.g., liquid and ice water content) properties of the detected cloud can be derived. The radar is operated in a vertically pointing mode. Additionally, the system is equipped with a passive radiometric channel at 89 GHz, sensitive to cloud liquid water. Passive and active receivers are fed by the same antenna, resulting in perfect beam overlap.
 ===== Data =====
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   * [[https://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser1.html?site=Ny-Alesund&date=0&UpperLeft=Joyrad94-Overview | Quicklook archive]]
-Current measurements:
+Current measurements showing the time-height series of radar reflectivity factor, Doppler velocity, Doppler spectral width, and the brightness temperature from the passive 89 GHz channel of JOYRAD-94:
 <html>
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       </a> click to enlarge
 </html>
+\\
-The figure shows the brightness temperature from the passive 89 GHz channel of JOYRAD-94 as well as radar reflectivity factor, Doppler velocity and Doppler spectral width of the JOYRAD-94 measurements.\\
+===== Deployment =====
-===== History =====
 ^  Period  ^  Place  ^  Project  ^
-|  02/03/2023 - today       | [[http://www.awipev.eu/|AWIPEV at Ny-Ålesund]], Norway | (AC)3 |
+|  02/03/2023 - today       | [[http://www.awipev.eu/|AWIPEV at Ny-Ålesund]], Norway | [[http://www.ac3-tr.de/|(AC)3]] |
-|  14/06/2019 - 22/06/2022  | [[http://www.awipev.eu/|AWIPEV at Ny-Ålesund]], Norway | (AC)3 |
+|  14/06/2019 - 22/06/2022  | [[http://www.awipev.eu/|AWIPEV at Ny-Ålesund]], Norway | [[http://www.ac3-tr.de/|(AC)3]] |
 |  23/03/2018 - 06/03/2019  | [[http://atmos.meteo.uni-koeln.de/ag_crewell/doku.php?id=sites:iquique|Iquique]], Chile | [[http://sfb1211.uni-koeln.de/|CRC1211]] |
-|  10/06/2016 - 26/07/2017  | [[http://www.awipev.eu/|AWIPEV at Ny-Ålesund]], Norway | (AC)3 |
+|  10/06/2016 - 26/07/2017  | [[http://www.awipev.eu/|AWIPEV at Ny-Ålesund]], Norway | [[http://www.ac3-tr.de/|(AC)3]] |
 |  16/10/2015 - 23/03/2016  | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | JOYCE |