Differences

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--- radiation [2020/08/31 13:30] – [Composite products using data from JOYRAD-35] bpospich
+++ radiation [2021/03/01 10:19] (current) – [Link to current observations] bpospich
@@ Line 7: / Line 7: @@
 ===== Principle =====
-Two pyranometers (CMP 21), a pyrheliometer (CHP 1) and a pyrgeometer (CGR 4) are used to measure solar shortwave radiation and terrestrial longwave radiation. One pyranometer receives total downward solar irradiance. The other instruments are mounted on a suntracker (SOLYS 2) measuring diffuse downward solar irradiance (shaded pyranometer), direct solar irradiance (pyrheliometer) and terrestrial downward irradiance (shaded pyrgeometer). All instruments were produced and calibrated by Kipp&Zonen B.V., Netherlands.
+Two pyranometers (CMP 21), a pyrheliometer (CHP 1) and a pyrgeometer (CGR 4) are used to measure solar shortwave radiation and terrestrial longwave radiation. One pyranometer receives total downward solar irradiance. The other instruments are mounted on a suntracker (SOLYS 2) measuring diffuse downward solar irradiance (shaded pyranometer), direct solar irradiance (pyrheliometer) and terrestrial downward irradiance (shaded pyrgeometer). All instruments were produced and calibrated by Kipp&Zonen B.V., Netherlands. For further information about the measurements, please contact [[https://www.fz-juelich.de/SharedDocs/Personen/IEK/IEK-8/DE/PhotochemieUndRadikale/bohn_birger.html?|B. Bohn]]
@@ Line 21: / Line 21: @@
 ===== Data availability =====
-The following data products are provided via the SAMD database. If you would like to have additional data or recent data that have not been uploaded to SAMD yet, please fill the {{ :joyce_data_request_form.pdf |data request sheet}} and send it to [[mailto:info@joyce.cloud|info@joyce.cloud]]
+The following data products are provided via the SAMD database. If you would like to have additional data or recent data that have not been uploaded to SAMD yet, 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   ^
-| Downwelling shortwave irradiance   | 5 seconds    | 1 file per day (555 KB)     | //sups_joy_pyrg00_l1_rlds_v01_YYYYMMDDHHMMSS.nc//  | available via SAMD   |
+| Downwelling shortwave irradiance   | 5 seconds    | 1 file per day (555 KB)     | //sups_joy_pyr00_l1_rlds_v01_YYYYMMDDHHMMSS.nc//  | available via SAMD   |
 | Downwelling longwave irradiance   | 5 seconds    | 1 file per day (555 KB)     | //sups_joy_pyrg00_l1_rlds_v01_YYYYMMDDHHMMSS.nc//  | available via SAMD   |
@@ Line 33: / Line 33: @@
 ===== Link to current observations =====
-Data quicklooks can be found in the [[http://gop.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser2.html?site=JOYCE&date=-1&UpperLeft=Joyrad35_Overview&UpperRight=Joyrad35_wind_ppi|JOYCE quicklook archive]] and in the [[https://guest.metek.de/skripts/animate_hourly_xcrl_skew.html?nic=juel|METEK archive]]
+Data quicklooks can be found in the [[http://atmos.meteo.uni-koeln.de/~hatpro/dataBrowser/dataBrowser1.html?site=JOYCE&date=-31&UpperLeft=Radiation_downwelling_fluxes|JOYCE quicklook archive]]. Attention, quicklooks are only available several days after the measurement.
 ===== Measurement examples =====
-{{wiki:examples:200704_jue_l2_radar.png?direct&400|JOYRAD-35_obs}}
+{{wiki:examples:20190804_jue_radiation_v00.png?direct&600|Radiation_obs}}
-{{wiki:examples:20200704_joyrad35_wind_profile.png?direct&400|JOYRAD-35_wind}} \\
-//Example time series of JOYRAD-35 observations (radar moments / horizontal wind)//
-{{wiki:examples:20200704_juelich_classification.png?direct&800|Cloudnet_target_classification}} \\
-//Example time series of Cloudnet target classification//
+=====  History =====
+^  Period  ^  Place  ^  Project  ^
+|  April 2014 - today | Forschungszentrum Jülich | JOYCE |
+Total solar irradiance measurements started in 2006, pyrgeometer measurments in 2011, suntracker measurements in 2014.
-===== JOYRAD-35 History =====
-^  Period  ^  Place  ^  Project  ^
-| 2017 |  |  Instrument upgrade |
-| 09/03/2012 - today | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | JOYCE |
-| 08/11/2011 - 08/03/2012 | Munich Airport, Germany| iPort campaign |
-| 03/2011 - 07/11/2011 | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | JOYCE |
-{{:wiki:instruments:joyrad35_07.jpg?direct&600|JOYRAD-35 ©B. Pospichal}} \\
+===== Technical Specifications =====
-//Cloud radar JOYRAD-35 installed at Jülich//
+^  Parameter  ^  Specification  ^  Remark  ^
+| Total solar irradiance (CMP 21)| Secondary standard (WMO)| |
+| Diffuse solar irradiance (CMP 21)| Secondary standard (WMO)| shaded |
+| Direct solar irradiance (CHP 1)| First class (WMO)| tracked |
+| Terrestrial irradiance (CGR 4)| Certified calibration | shaded |
+| Manufacturer | Kipp & Zonen B.V., NL | |
+| Data logger (CR3000)| 16-bit | 5 s time resolution |
+| Manufacturer | Campbell Scientific Inc., UK |
-===== Technical Specifications =====
-^ Parameter  ^ Specification  ^ Remark  ^
-| Frequency | 35.5 ± 0.15 GHz  | corresponds to wavelength of 8.5 mm |
-| Peak power (max) | 25 kW  |  |
-| Average power | ~ 24 W |  |
-| Pulse width | 200 ns | adjustable (100, 200, or 400 ns)  |
-| Pulse repetition frequency | 5 kHz | adjustable (5-10 kHz) |
-| Minimum height | 150 m | full sensitivity above 400 m  |
-| Measuring range | 15 km | adjustable (7.5-30 km)  |
-| Range resolution | 30 m | adjustable (15, 30, or 60 m) |
-| Antenna beam width | 0.6° | |
-| Doppler velocity resolution | 0.025 m/s | depends on FFT length |
-| Maximum unambiguous velocity | ±20 m/s |  |
-| Maximum sensitivity at 5 km (integration 0.1 s) | -45 dBZ |  |
-| Calibration system accuracy | ±0.5 dB |  |
-| Number of gates (with simultaneous stored raw data) | 500 |  |
-| Number of averaging spectra | 200 | adjustable (1-32768) |
-| Manufacturer | [[http://www.metek.de/|Metek]] |
-                                    |