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  • Data were collected by Chilbolton Facility for Atmospheric and Radio Research (CFARR) Raingauges from 1st of July 2004 to the present at Sparsholt College, Hampshire. The dataset contains measurements of rainfall accumulation as measured by multiple instruments.

  • Measurements of tropospheric attenuation (excess and total) made at Sparsholt in Hampshire, UK using the ITALSAT satellite F1 beacon signal at 40 GHz.

  • Sky images collected by a sky camera replacing the earlier JVC KYF55-BE digital camera deployed at the Chilbolton Observatory, Hampshire. These differ from the previous camera imagery by the use of a fish-eye lens to give complete sky imagery. These images have been captured from mid-2016 to the present.

  • Data were collected by Chilbolton Facility for Atmospheric and Radio Research (CFARR) Raingauges from 15th of March 2002 to the present at Sparsholt College, Hampshire. The dataset contains measurements of rainfall accumulation as measured by RAL Rapid Response Drop Counting rain gauges.

  • Data were collected by the Chilbolton Facility for Atmospheric and Radio Research (CFARR) Disdrometer from the 1st of July 2004 to the present at Sparsholt College, Hampshire. The dataset contains measurements of the drop size distribution of rain.

  • Measurements of troposhperic attenuation (excess and total) made at Sparsholt in Hampshire, UK using the ITALSAT satellite F1 beacon signal at 50 GHz. ITALSAT F1 (owned and operated by the Italian Space Agency) was in geostationary orbit at 13 degrees east, and it could be seen from the receiving station at an elevation angle of 30 degrees. The received signal was vertically polarised and was sampled once a second. North-south tracking of the satellite with the beacon receiver maintained ~20dB of dynamic range thought of the measurement period. The method applied to remove the nonatmospheric changes of the beacon signal and to establish the reference level from which to measure the excess and total attenuation is described in [Ventouras et.al., Long-term statistics of tropospheric attenuation from the Ka/U band ITALSAT satellite experiment in the United Kingdom, Radio Sci.,41,RS2007,doi:10.1029/2005RS003252]. The accuracy of fade level retrieval is estimated to be ~+/-0.5dB

  • The Chilbolton Observatory, Hampshire, have had a Vaisala CT75K lidar ceilometer deployed since 13th September 1996. This dataset contains measurements of the range of first, second, and third cloud base from the lidar and attenuated backscatter coefficients of aerosols within the atmosphere. Plots of the attenuated backscatter coefficient at different heights are also available. The instrument has been regularly calibrated using the method described by O'Connor, Ewan J., Anthony J. Illingworth, Robin J. Hogan, 2004: A Technique for Auto-calibration of Cloud Lidar. J. Atmos. Oceanic Technol., 21, 777–786. doi: http://dx.doi.org/10.1175/1520-0426(2004)021<0777:ATFAOC>2.0.CO;2 . Prior to April 2014 this technique had been applied manually, but from 2014 this was automated to provide a routine, automated application of O'Connor et al's calibration technique. This also highlighted an instrument calibration drift not previously spotted in earlier data and so a corrected data have been added to the archive for the following periods (denoted by "_cor1" in the filename): 1st July 2003 – 31st December 2003, January 2006 to December 2012 and February and March 2013. Users should see the data quality notes for further details. This dataset incorporates the earlier published and citable 1996 - 2013 collection of lidar data, but continues this dataset to present

  • Data were collected from the 31st of March 2004 to the 29th of March 2011 by the Copernicus Doppler cloud radar at Chilbolton Observatory, Hampshire. The dataset contains measurements of attenuated backscatter coefficients of aerosols within the atmosphere, and a full Doppler spectrum, and moments Z, v, and w.

  • Raw beacon radio propagation measurements at 20 and 40 GHz (KA/Q bands) made at Chilbolton, Hampshire, UK, for the ESA funded 'Large Scale Assessment of KA/Q band atmospheric channel using the ALPHASAT TDP5 propagation beacon signal (ASALASCA)' project. These are signals measured by the two receivers located at Chilbolton received from the Aldo Paradoni Payload (TDP5) beacon on board ESA's ALPHASAT telecommunications satellite. Measurements began in July 2016.

  • Radio propagation measurements at 40 GHz at Chilbolton, Hampshire for the ESA funded Large Scale Assessment of KA/Q band atmospheric channel using the ALPHASAT TDP5 Propagation beacon signal.