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--- radiation [2020/08/31 15:38] – [Principle] bpospich
+++ radiation [2021/03/01 11:19] (current) – [Link to current observations] bpospich
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 ^ 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   |
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 ===== Link to current observations =====
-Data quicklooks can be found in the [[http://gop.meteo.uni-koeln.de/~Hatpro/dataBrowser/dataBrowser1.html?site=JOYCE&date=-365&UpperLeft=Radiation_downwelling_fluxes|JOYCE quicklook archive]]. Attention, quicklooks are only available several days after the measurement.
+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 =====
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-===== JOYRAD-35 History =====
+=====  History =====
 ^  Period  ^  Place  ^  Project  ^
-| 2017 |  |  Instrument upgrade |
+|  April 2014 - today | Forschungszentrum Jülich | JOYCE |
-| 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 |
+Total solar irradiance measurements started in 2006, pyrgeometer measurments in 2011, suntracker measurements in 2014.
-| 03/2011 - 07/11/2011 | [[http://www.fz-juelich.de/|Research Center Jülich]], Germany | JOYCE |
 ===== Technical Specifications =====
-^ Parameter  ^ Specification  ^ Remark  ^
-| Frequency | 35.5 ± 0.15 GHz  | corresponds to wavelength of 8.5 mm |
+^  Parameter  ^  Specification  ^  Remark  ^
-| Peak power (max) | 25 kW  |  |
+| Total solar irradiance (CMP 21)| Secondary standard (WMO)| |
-| Average power | ~ 24 W |  |
+| Diffuse solar irradiance (CMP 21)| Secondary standard (WMO)| shaded |
-| Pulse width | 200 ns | adjustable (100, 200, or 400 ns)  |
+| Direct solar irradiance (CHP 1)| First class (WMO)| tracked |
-| Pulse repetition frequency | 5 kHz | adjustable (5-10 kHz) |
+| Terrestrial irradiance (CGR 4)| Certified calibration | shaded |
-| Minimum height | 150 m | full sensitivity above 400 m  |
+| Manufacturer | Kipp & Zonen B.V., NL | |
-| Measuring range | 15 km | adjustable (7.5-30 km)  |
+| Data logger (CR3000)| 16-bit | 5 s time resolution |
-| Range resolution | 30 m | adjustable (15, 30, or 60 m) |
+| Manufacturer | Campbell Scientific Inc., UK |
-| 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]] |
-                                    |