Meteo Observations at IGMK

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====== Cloud radar JOYRAD-10 ======

{{:wiki:instruments:joyrad10_03.jpg?direct&600|JOYCE-JOYRAD10 ©B. Pospichal}} \\
//Cloud radar JOYRAD-10 installed at Jülich//

===== Principle =====

**JOYRAD-10** is a vertically pointing X-Band Doppler cloud radar MIRA-10 manufactured by [[https://metek.de/|METEK GmbH]]. It is located at the Forschungszentrum Jülich as part of [[http://cpex-lab.de/cpex-lab/EN/Home/JOYCE-CF/JOYCE-CF_node.html|JOYCE]]. It has been installed as part of the Emmy-Noether research group [[https://geomet.uni-koeln.de/forschung/en-optimice|OPTIMICE]] led by Stefan Kneifel in order to perform triple-frequency radar observations in combination with Ka- and W-Band radars. 


===== Measurement modes =====

  * Vertically pointing observations with integration times up to 1 seconds. 


===== JOYCE-CF Standard Operation Procedures =====

  * Standard measurement mode is vertically pointing, 2 second integration time 

===== Calibrations and data quality assurance procedures =====
  * Check with co-located disdrometer to find out reflectivity offsets
  * Consistency check with other cloud radars

===== Data availability =====

Data for JOYRAD-10 are available on request. Please fill the {{ :joyce_data_request_form.pdf |data request sheet}} and send it to [[mailto:info@joyce.cloud|info@joyce.cloud]]
 
^ Dataset     ^ Temporal resolution       ^ File size          ^ Filename   ^ Remarks   ^ 
| Doppler spectra, Radar moments  | 2 seconds   | variable size (up to 1 GB/hour in case of thick clouds)  | //YYYYMMDD_HHMMSS.znc//  | NetCDF file  |
| Doppler spectra  | 2 seconds   | variable size (up to 300 MB/hour in case of thick clouds)  | //YYYYMMDD_HHMMSS.zspc//  | Binary file  |

  * **Dual-wavelength ratio** Ka/X-Band 


===== Link to current observations =====


Data quicklooks can be found in the [[http://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser2.html?site=TRIPEX-pol&date=-1&UpperLeft=3radar_Ze&UpperRight=3radar_DWR|JOYCE quicklook archive]]
and in the [[https://guest.metek.de/skripts/animate_hourly_mbx1_diff.html?nic=mbx1|METEK archive]]


===== Measurement examples =====
{{:wiki:examples:20220119_mira10.png?600|}} {{:wiki:examples:20220119_mira10_vel.png?600|}}\\
//Example time series of JOYRAD-10 observations (one hour of reflectivity and Doppler velocity as a function of height)//

===== JOYRAD-10 History =====
^  Period  ^  Place  ^  Project  ^
| 10/2018 - today | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | [[https://geomet.uni-koeln.de/forschung/en-optimice|OPTIMICE]] |









===== Specifications =====
^ Parameter  ^ Specification  ^ Remark  ^
| Frequency | 9.4 GHz  | corresponds to wavelength of 3.2 cm |
| Manufacturer | [[http://www.metek.de/|Metek]] | 
                                    |