Meteo Observations at IGMK

actris

Anonymous (anonymous@undisclosed.example.com) — 2024-12-13T16:45:05+00:00

ACTRIS at University of Cologne Within the ACTRIS research infrastructure, the University of Cologne * operates JOYCE (Jülich Observatory for Cloud Evolution), an ACTRIS national facility (NF) for Cloud Remote Sensing * Link to the ACTRIS-NF JOYCE * and hosts a Topical centre unit on microwave radiometry of the

actris_cf

Anonymous (anonymous@undisclosed.example.com) — 2024-12-06T15:32:59+00:00

ACTRIS central facility unit CCRES-DE The German unit of the Centre for Cloud Remote Sensing (CCRES-DE) is hosted by the University of Cologne and the JOYCE observatory. provides support and state-of-the-art expertise for ground-based microwave radiometer (MWR) operation, data quality control and quality assurance, retrieval development as well as the testing of new instruments.

aeri

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T09:57:24+00:00

Atmospheric Emitted Radiance Interferometer (AERI) [AERI at JOYCE ©B. Pospichal] AERI installed at Jülich Principle The AERI is an operational infrared spectrometer that measures the downwelling infrared radiance from 3.3-19 µm at 1 cm-1 resolution. Like the microwave spectrum, the infrared spectrum also contains information on the vertical profile of temperature and humidity. Spectral observations from 612-713 cm

awipev

Anonymous (anonymous@undisclosed.example.com) — 2024-03-21T10:54:19+00:00

AWIPEV [Photo: Holger Deckelmann (AWI)] Photo: Holger Deckelmann (AWI) AWIPEV ist the French-German Arctic Research Base operated by the Alfred Wegener Institute for Polar and Marine Research (AWI) and the French Polar Institute Paul Emile Victor (IPEV). Within the Transregional Collaborative Research Centre TR 172

ceilo

Anonymous (anonymous@undisclosed.example.com) — 2022-01-20T21:00:03+00:00

Ceilometer observations [Ceilometer ©B. Pospichal] Jenoptik (LUFFT) ceilometer CHM15k (left), Vaisala ceilometer CT25K (right) at JOYCE Principle A ceilometer measures the cloud base height, called ceiling in aviation. It is based on the light detecting and ranging (LIDAR) principle, i.e. it sends laser pulses and measures the backscattered light. From travel time the distance of the back scattering object can be determined. From strength and attenuation of the backscattered signal the back…

chm15k

Anonymous (anonymous@undisclosed.example.com) — 2022-01-20T20:59:41+00:00

Jenoptik/Lufft CHM15k Ceilometer [CT25K ©B. Pospichal] Jenoptik CHM15k ceilometer installed at Jülich * Quicklook archive * Current observations (click on image): The figure shows raw backscatter signal as functions of time and height. Red curves indicate cloud base heights and blue curves indicate aerosol layer heights as derived by the measurement software.

cimel

Anonymous (anonymous@undisclosed.example.com) — 2022-01-19T18:09:07+00:00

CIMEL sun photometer [JOYCE-TOPHAT ©B. Pospichal] HATPRO-TOPHAT installed at Jülich Principle The CIMEL sun photometer performs measurements of spectral sun irradiance and sky radiances. It is part of the Aerosol Robotic Network (AERONET). It measures spectral aerosol optical Depth (AOD), inversion products, and precipitable water in diverse aerosol regimes. Aerosol optical depth data are computed for three data quality levels: Level 1.0 (unscreened), Level 1.5 (cloud-screened), and Level 2…

citystation

Anonymous (anonymous@undisclosed.example.com) — 2025-01-13T20:06:26+00:00

Meteorologische Messstation innerer Grüngürtel, Köln (UniSport) Link zu aktuellen Messungen Die Wetterstation befindet sich auf dem Gelände des Uni-Sport Geländes (Zülpicher Wall, 50.929668° N 6.932644° E) auf einer Höhe von 50m über NN. [Copyright: Bing Maps] Windrichtung und -geschwindigkeit Auf Basis von Laufzeitunterschieden von Ultraschallwellen kann die Windgeschwindigkeit und -richtung berechnet werden (s. Skizze). Im Gegensatz zu Windsensoren mit Pr…

ct25k

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:02:09+00:00

Vaisala CT25K Ceilometer [CT25K ©B. Pospichal] Vaisala CT25K ceilometer installed at Jülich Current data: History Period Place Project 10/2010 - today Research Center Jülich, Germany 09/2007 - 10/2010 Selhausen, Germany TR32 winter months 2008/2009 UFS, Zugspitze, Germany TOSCA 2006 - 2007 Nangatchori, Benin

disdrometer

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:14:34+00:00

Disdrometer [Parsivel ©B. Pospichal] Parsivel disdrometer installed at Jülich Principle The OTT Parsivel2 is a laser-based optical system for complete and reliable measurement of all types of precipitation. The size range of measurable liquid precipitation particles is from 0.2

foghat

Anonymous (anonymous@undisclosed.example.com) — 2024-11-17T13:08:26+00:00

HATPRO-FOGHAT Microwave Radiometer FOGHAT is a HATPRO G5 microwave radiometer, built in 2018. So far, it has been operated during campaigns in Chile and Southern France. FOGHAT History Period Place Project 03/2018 - 03/2019 Iquique, Chile (20°32'22

gallery

Anonymous (anonymous@undisclosed.example.com) — 2022-01-20T22:43:26+00:00

JOYCE Quicklook and Instrument Gallery Microwave radiometers Instrument Image Quicklooks HATPRO microwave radiometer TOPHAT Measurement of + microwave brightness temperatures + Integrated water vapor + Cloud liquid water path

hatpro

Anonymous (anonymous@undisclosed.example.com) — 2024-11-17T12:57:11+00:00

HATPRO Microwave Radiometer [JOYCE-TOPHAT ©B. Pospichal] HATPRO-TOPHAT installed at Jülich Principle HATPRO (Humidity And Temperature PROfiler) is a passive microwave radiometer manufactured by Radiometer Physics GmbH installed at the Forschungszentrum Jülich as part of JOYCE. It measures brightness temperatures at 7 channels along the slope of the water vapor absorption line at 22

instruments

Anonymous (anonymous@undisclosed.example.com) — 2020-08-31T20:03:24+00:00

JOYCE instruments * HATPRO Microwave Radiometer * HATPRO-TOPHAT * HATPRO-SUNHAT * HATPRO-FOGHAT * Ka-Band Cloud Radar JOYRAD-35 * X-Band Cloud Radar JOYRAD-10 * W-Band Cloud Radar * Micro Rain Radar * Disdrometer * Pluviometer * Ceilometer * Jenoptik CHM15k * Vaisala CT25k * Doppler wind lidar * Atmospheric Emitted Radiance Interferometer AERI * Shadowband radiometer MFRSR * Total Sky imager TSI-AXIS * Sun Photometer * Broadband radiati…

joyce

Anonymous (anonymous@undisclosed.example.com) — 2024-12-13T17:03:02+00:00

JOYCE The Jülich ObservatorY for Cloud Evolution (JOYCE) is operated jointly by the University of Cologne, the Research Centre Jülich. JOYCE is a national facility for Cloud Remote Sensing within the European Research Infrastructure ACTRIS since 2021. JOYCE was established in 2008 and was initially operated in the frame of the Transregional Collaborative Research Centre

joydurado

Anonymous (anonymous@undisclosed.example.com) — 2024-11-17T13:59:36+00:00

Dual-frequency cloud radar (JOYDURADO) [JOYDURADO ©B. Pospichal] Cloud radar JOYDURADO installed at Jülich Principle JOYDURADO consists of two Frequency Modulated Continuous Wave (FMCW) radars that transmits saw tooth frequency chirps at 35 and 94 GHz. In this way, vertical profiles of reflectivity, Doppler velocity, Doppler spectral width are detected from 150 m to 10 km above ground. Given these measurements, information on the macrophysical (cloud boundaries, type of cloud particles) and …

joyhat

Anonymous (anonymous@undisclosed.example.com) — 2024-11-17T12:52:57+00:00

HATPRO-JOYHAT Microwave Radiometer TOPHAT is a HATPRO G5 microwave radiometer, installed at Jülich. It has been funded by ACTRIS-D to serve as a reference instrument for the ACTRIS CRS (Cloud Remote Sensing) network. TOPHAT History Period Place Other

joyrad10

Anonymous (anonymous@undisclosed.example.com) — 2022-01-20T20:35:58+00:00

Cloud radar JOYRAD-10 [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 METEK GmbH. It is located at the Forschungszentrum Jülich as part of JOYCE. It has been installed as part of the Emmy-Noether research group

joyrad35

Anonymous (anonymous@undisclosed.example.com) — 2024-10-11T10:11:01+00:00

Cloud radar JOYRAD-35 [JOYCE-JOYRAD35 ©B. Pospichal] Cloud radar JOYRAD-35 installed at Jülich Principle JOYRAD-35 is a scanning Doppler cloud radar MIRA-35 manufactured by METEK GmbH. It is installed at the Forschungszentrum Jülich as part of JOYCE. The radar transmits a linearly polarized signal at 35.5

mfrsr

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:16:49+00:00

Multi-Filter Rotating Shadowband Radiometer (MFRSR) [MFRSR@JOYCE ©B. Pospichal] MFRSR installed at Jülich Principle The Multifilter Rotating Shadowband Radiometer (MFRSR) is a passive instrument that measures global and diffuse components of solar irradiance at one broadband channel and at six narrowband channels, i. e. at 415, 500, 615, 673, 870, and 940 nm. Direct irradiance is subsequently calculated from the diffuse and global measured components. Each MFRSR measurement sequence include…

mrr

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:17:19+00:00

Micro Rain Radar [JOYCE-JOYRAD35 ©B. Pospichal] Micro Rain Radar installed at Jülich Principle The Micro Rain Radar (MRR) is a vertical pointing FM-CW (frequency modulated –continuous wave) Doppler radar operating at 24.1 GHz (K-band, 12.4 mm wavelength). The emitted radar signal (only 50 mW transmitting power) is backscattered by falling hydrometeors (rain, graupel, snow). From the Doppler spectra the radar reflectivity factor (Ze) and the terminal fall velocity distribution can be derived…

pluvio

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:17:43+00:00

Pluviometer [Pluviometer ©B. Pospichal] Pluviometer installed at Jülich Principle The OTT Pluvio 2 is a precipitation gauge basing on a weighing measurement principle. It detects both liquid and solid precipitation by weighing the bucket content. The following values are recorded:

pvm

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:18:10+00:00

Photovoltaic modules Two photovoltaic modules are installed at IEK-8 at Forschungszentrum Jülich to measure their radiation dependent energy yield by tracking the maximum power point in the recorded I-U-Curve. Module I: SolarWorld SW 235-poly, polycrystalline

radiation

Anonymous (anonymous@undisclosed.example.com) — 2021-03-01T10:19:17+00:00

Broadband radiation [JOYCE-JOYRAD35 ©B. Pospichal] [JOYCE-JOYRAD35 ©B. Pospichal] Sun tracker and Radiation sensors installed at Jülich 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…

radiosondes

Anonymous (anonymous@undisclosed.example.com) — 2022-02-14T15:00:52+00:00

GRAW Radiosondes content Vaisala RS41 content Radiosonde Reuse Notes for the finder

radiosondes_reuse

Anonymous (anonymous@undisclosed.example.com) — 2022-08-17T09:37:23+00:00

[Hannes Grobe 19:27, 20 June 2007 (UTC), Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany, CC BY-SA 2.5 , via Wikimedia Commons] Sehr geehrter Finder, wenn Sie auf dieser Webseite gelandet sind, haben Sie vermutlich eine unserer Radiosonden gefunden. Zunächst einmal möchten wir uns ganz herzlich dafür bedanken, dass Sie diese Sonde eingesammelt haben und damit zum Umweltschutz beigetragen haben. Im Rahmen eines nachhal…

ramanlidar

Anonymous (anonymous@undisclosed.example.com) — 2024-11-17T14:11:56+00:00

Raman Lidar [JOYCE-Raman lidar ©M. Müller] Raman lidar at JOYCE Principle The Raymetrics Raman lidar can provide continuous (24/7) profiles of temperature, water vapor, backscatter coefficient and extinction (unattended, day and night). It sends out laser pulses at 355 nm and has several detectors for elastic and inelastic signals, as well as depolarization.

socles

Anonymous (anonymous@undisclosed.example.com) — 2020-09-21T12:36:39+00:00

SOCLES Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

start

Anonymous (anonymous@undisclosed.example.com) — 2024-12-06T15:21:37+00:00

JOYCE - Jülich Observatory for Cloud Evolution * JOYCE Overview JOYCE instrumentation * HATPRO Microwave Radiometer * HATPRO-TOPHAT * HATPRO-SUNHAT * HATPRO-FOGHAT * HATPRO-JOYHAT * Ka-Band Cloud Radar JOYRAD-35 * X-Band Cloud Radar JOYRAD-10 * Dual-frequency (Ka/W-Band) Cloud Radar JOYDURADO * W-Band Cloud Radar * Micro Rain Radar * Disdrometer * Pluviometer * Ceilometer * Jenoptik CHM15k * Vaisala CT25k * Doppler wind lidar * Rama…

sunhat

Anonymous (anonymous@undisclosed.example.com) — 2020-08-28T15:33:04+00:00

HATPRO-SUNHAT Microwave Radiometer SUNHAT is a HATPRO microwave radiometer, mainly used for campaigns. It was built in 2005, and was operated at Jülich from 2008 to 2010 before TOPHAT became the main JOYCE instrument. SUNHAT History Period Place

tophat

Anonymous (anonymous@undisclosed.example.com) — 2024-11-17T12:59:38+00:00

HATPRO-TOPHAT Microwave Radiometer TOPHAT is a HATPRO microwave radiometer, installed at Jülich. It was originally a G2 radiometer, and was upgraded in 2016 to G5 receivers. TOPHAT History Period Place Other 24/07/2024 - 17/10/2024 Cologne Biozentrum

tsi

Anonymous (anonymous@undisclosed.example.com) — 2021-02-03T08:58:39+00:00

Total Sky Imager (TSI) [TSI-AXIS ©B. Pospichal] AXIS TSI installed at Jülich Principle We use a commercially available fish-eye surveillance camera (AXIS M3027-PVE) to collect images of the sky and determine cloud amount. Images with a resolution of 800×600 pixels (BMP format) are taken every 20sec. Every unsaturated pixel above the horizon is investigated for its blue-to-red-ratio and categorized as sky (blue), thin-cloud (light-blue) or cloud (white or gray). Pixels are counted and store…

wband

Anonymous (anonymous@undisclosed.example.com) — 2021-04-01T15:07:28+00:00

W-Band Cloud radar (JOYRAD-94) [JOYCE-JOYRAD94 ©N. Küchler] Cloud radar JOYRAD-94 installed at Jülich Principle The W-Band cloud radar is a Frequency Modulated Continuous Wave (FMCW) Radar that transmits saw tooth frequency chirps at 94 GHz. In this way, vertical profiles of reflectivity, Doppler velocity, Doppler spectral width are detected from 150 m to 10 km above ground. Given these measurements, information on the macrophysical (cloud boundaries, type of cloud particles) and microphysi…

wetterbesprechung

Anonymous (anonymous@undisclosed.example.com) — 2021-05-20T15:25:12+00:00

Wetterbesprechung Die Wetterbesprechung findet jeweils freitags von 13:30-14:00 statt. Zoom Zugangsdaten * Meeting-ID: 945 0816 9011 * Passwort: 102355 Nützliche Links * NinJo (DWD) * Wetter 3 (Vorhersagekarten) * Kachelmannwetter (aktuelle Messwerte, Vorhersagen) * DWD Klimainformationen * Copernicus Climate Change Service * ECMWF Modellkarten und Ensembles * NOAA NCEP Reanalysis composites Termine Datum Vortragende/r

windlidar

Anonymous (anonymous@undisclosed.example.com) — 2025-05-08T15:21:19+00:00

Doppler wind lidar [HALO Doppler Lidar ©B. Pospichal] HALO Photonics Doppler wind lidar at JOYCE The doppler wind lidar has been out of operation since January 2025. It is currently unclear whether it can be repaired. Principle The backscattered light from an emitted laserbeam is used to measure wind speed. Analysis of doppler shift gives wind speed along the beam. Combination of several beams allows an estimate of the three components of the wind vector. Amount of received backscattered l…