Differences

This shows you the differences between two versions of the page.

--- instruments:instruments [2016/08/31 08:56] – uli
+++ instruments:instruments [2016/10/18 19:29] – [Doppler Lidar] jan
@@ Line 4: / Line 4: @@
 ==== 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 ====
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 ==== 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 ====
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 ==== MRR =====
 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 ====