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instruments:instruments [2016/08/31 08:47] uliinstruments:instruments [2021/01/22 22:17] (current) – external edit 127.0.0.1
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 ==== Ceilometer ==== ==== Ceilometer ====
-Our [[instruments:ceilo:ceilometer|ceilometer CT25K]] is based on the light detecting and ranging (LIDAR) principle: it sends out laser pulses and measures the backscattered light (at 905 nm). From the time delay it derives cloud base height (i.e. the //ceiling// in aviation) up 7.5 km hieght as well as boundary layer structures. We also operate a high-power ceilometer [[instruments:ceilo:ceilometer_jen|CHM15k]] which can detect clouds up to 15 km height. For background information see the [[http://wiki.eg-climet.org/index.php?title=Ceilometer|EG-CLIMET wiki]].+Our [[instruments:ceilo:ceilometer|ceilometer CT25K]] is based on the light detecting and ranging (LIDAR) principle: it sends out laser pulses and measures the backscattered light (at 905 nm). From the time delay it derives cloud base height (i.e. the //ceiling// in aviation) up 7.5 km hieght as well as boundary layer structures. We also operate a high-power ceilometer [[instruments:ceilo:ceilometer_jen|CHM15k]] which can detect clouds up to 15 km height. For background information see the [[http://cfa.aquila.infn.it/wiki.eg-climet.org/index.php5/Ceilometer|EG-CLIMET wiki]].
  
 ==== Cloud Radar ==== ==== Cloud Radar ====
-Our scanning [[instruments:mira:mira|cloud radar JOYRAD-35]] is a pulsed Doppler radar which measures profiles of reflectivity, Doppler velocity, Doppler spectral width, and linear depolarization ratio at 35.5 GHz. From these, various macro- and microphysical properties of clouds and precipitation can be derived. In addition, we operate the 94 GHz FMCW cloud radar [[instruments:joyrad94:joyrad94| cloud radar JOYRAD-94]] which can resolve cloud structures down to a resolution of 5 m. For background information see the [[http://wiki.eg-climet.org/index.php?title=Cloud_radar|EG-CLIMET wiki]].+Our scanning [[instruments:mira:mira|cloud radar JOYRAD-35]] is a pulsed Doppler radar which measures profiles of reflectivity, Doppler velocity, Doppler spectral width, and linear depolarization ratio at 35.5 GHz. From these, various macro- and microphysical properties of clouds and precipitation can be derived. For background information see the [[http://cfa.aquila.infn.it/wiki.eg-climet.org/index.php?title=Cloud_radar|EG-CLIMET wiki]]. In addition, we operate the 94 GHz FMCW cloud radar [[instruments:joyrad94:joyrad94| cloud radar JOYRAD-94]] which can resolve cloud structures down to a resolution of 5 m. 
  
 ==== Doppler Lidar ==== ==== Doppler Lidar ====
-The [[instruments:wind_lidar|Doppler Lidar]] sends out pulses of light in the near-infrared part of the spectrum. The Doppler shift of the signal backscattered by aerosol can be used to infer line-of-sight wind speed within the boundary layer. Scanning in elevation and azimuth allows derivation of the full wind vector. For background information see the [[http://wiki.eg-climet.org/index.php?title=Doppler_Wind_Lidar|EG-CLIMET wiki]].+The [[instruments:wind_lidar|Doppler Lidar]] sends out pulses of light in the near-infrared part of the spectrum. The Doppler shift of the signal backscattered by aerosol can be used to infer line-of-sight wind speed within the boundary layer. Scanning in elevation and azimuth allows derivation of the full wind vector. For background information see the [[http://cfa.aquila.infn.it/wiki.eg-climet.org/index.php5/Doppler_Wind_Lidar|EG-CLIMET wiki]]
 + 
 +==== Meteorological tower ==== 
 +Forschungszentrum Jülich operates as 120 m high [[instruments:tower:tower|meteorological tower]] with platforms for measuring wind, humidity and temperature
  
 ==== Microwave Radiometer ==== ==== Microwave Radiometer ====
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     * [[instruments:snohat:snohat|HATPRO-SNOHAT]]     * [[instruments:snohat:snohat|HATPRO-SNOHAT]]
     * [[instruments:tophat:tophat|HATPRO-TOPHAT]]     * [[instruments:tophat:tophat|HATPRO-TOPHAT]]
-Additionally, a [[instruments:dpr:dpr|Dual Polarization Radiometer (DPR)]] is operated which measures in mm wavelength atmospheric windows and is highly sensitive to snowfall and super-cooled liquid water. Click [[instruments:mwr_references|here]] for a list of relevant references. For background information see the [[http://wiki.eg-climet.org/index.php?title=Microwave_radiometer|EG-CLIMET wiki]].+Additionally, a [[instruments:dpr:dpr|Dual Polarization Radiometer (DPR)]] is operated which measures in mm wavelength atmospheric windows and is highly sensitive to snowfall and super-cooled liquid water. Click [[instruments:mwr_references|here]] for a list of relevant references. For background information see the [[http://cfa.aquila.infn.it/wiki.eg-climet.org/index.php?title=Microwave_radiometer|EG-CLIMET wiki]].
  
 ==== MRR ===== ==== MRR =====
-The [[instruments:mrr:mrr|Micro Rain Radar (MRR)]] is a vertically pointing FM-CW Doppler radar operating at K-band. From the Doppler spectra the radar reflectivity factor (Ze) and the terminal fall velocity distribution as well as microphysical rain properties can be derived.+The [[instruments:mrr:mrr|Micro Rain Radar (MRR)]] is a vertically pointing FMCW Doppler radar operating in the K-band. From the Doppler spectra the radar reflectivity factor (Ze) and the terminal fall velocity distribution as well as microphysical rain properties can be derived
 + 
 +==== Multi-Filter Rotating Shadowband Radiometer ==== 
 +The [[instruments:mfrsr:mfrsr|Multi-Filter Rotating Shadowband Radiometer]] (MFRSR) allows the retrieval of aerosol optical depth, aerosol size information as well as cloud optical depth for single-layer “horizontally homogeneous” liquid clouds. 
 + 
 +==== Radiation sensors ===== 
 +A complete surface radiation balance is possible with the [[instruments:radiation:radiation|radiation sensors]] measuring at JOYCE. 
 + 
 +==== Surface precipitation ===== 
 +Surface precipitation is measured with a standard [[instruments:pluvio:pluvio|Pluvio]] gauge (weighing principle) as well as with an optical didrometer [[instruments:parzivel:parzivel|Parsivel]] yielding information on the size and fall velocity of the precipitation particles.
  
 ==== Scintillometer ==== ==== Scintillometer ====
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 ==== TSI ==== ==== TSI ====
-[[instruments:tsi:TSI|Total Sky Imager (TSI)]] is used to identify cloud types and cloud coverage and complements our cloud liquid water observations. +Our [[instruments:tsi:TSI|Total Sky Imager (TSI)]] is used to identify cloud types and derives cloud coverage complementing the observations of the other instruments
  
  
  
  
instruments/instruments.1472626049.txt.gz · Last modified: 2016/08/31 08:47 by uli