Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

Biogenic Aerosols - Effects on Clouds and Climate: Extended Radiosonde IOP

1 May 2014 - 31 August 2014

Lead Scientist: Keri Nicoll

Observatory: amf, tmp

Modified meteorological radiosondes have been extensively developed at the University of Reading for measuring cloud properties, to allow measurements beyond the traditional thermodynamic quantities (pressure temperature and relative humidity (RH)) to be obtained cost-effectively. Sensors developed at Reading include a supercooled liquid water sensor, an active cloud droplet detector, solar radiation sensor, electrical cloud charge detector, and turbulence sensor. These sensors are interfaced to a standard Vaisala RS92 meteorological radiosonde by a specially developed data acquisition system, PANDORA (Harrison et al, 2012) which allows the extra sensor data to be sent synchronously with the pressure, temperature and RH data across the radio link, without the need for any extra hardware at the receiving station. Evaluation of these new balloon borne sensors is required, which can be provided by active remote-sensing in the form of radar and lidar. This extended IOP sought to investigate a number of cloud processes in which in-situ cloud observations from radiosondes could provide information either complementary to or not obtainable by lidar/radar systems including detection of supercooled liquid water, investigation of electrical charging of cloud droplets in stratiform clouds, detection of cloud layers missed by lidar/radar, and characterisation of in cloud turbulence. This experiment was performed at the Hyytiälä site in Finland, during the same period when the US DoE Atmospheric Radiation Measurement (ARM) program was deployed. The provision of this comprehensive remote-sensing dataset, coupled with the existence of a radiosonde launching system at the ARM mobile facility therefore provided the best possible chance for evaluating the new radiosonde cloud and charge sensors. In turn, the new radiosonde cloud sensors also permitted the evaluation/validation of new remote-sensing retrievals.


Ewan OConnor


  • Parent Campaign
  • Sibling Campaign


von Lerber A, D Moisseev, L Bliven, W Petersen, A Harri, and V Chandrasekar. 2017. "Microphysical properties of snow and their link to Ze–S relation during BAECC 2014." Journal of Applied Meteorology and Climatology, 56(6), 10.1175/JAMC-D-16-0379.1.

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Campaign Data Sets

IOP Participant Data Source Name Final Data
Keri Nicoll Radiosondes - Extended Order Data

TMP Data Sources

Name Full Name Browse Data
AERI Atmospheric Emitted Radiance Interferometer Browse Data
AOD-MFRSR Aerosol Optical Depth (AOD) derived from MFRSR measurements Browse Data
AOS Aerosol Observing System Browse Data
AOSMET Meteorological Measurements associated with the Aerosol Observing System Browse Data
ASSIST Atmospheric Sounder Spectrometer for Infrared Spectral Technology Browse Data
CCN Cloud Condensation Nuclei Particle Counter Browse Data
CEIL Ceilometer Browse Data
CEILPBLHT Boundary-layer height data with CEIL Browse Data
CPC Condensation Particle Counter Browse Data
CSPHOT Sunphotometer Browse Data
ECMWFDIAG European Centre for Medium Range Weather Forecasts Diagnostic Analyses Browse Data
GNDRAD Ground Radiometers on Stand for Upwelling Radiation Browse Data
HSRL High Spectral Resolution Lidar Browse Data
HTDMA Humidified Tandem Differential Mobility Analyzer Browse Data
INTERPSONDE Interpolated Sonde Browse Data
IRT Infrared Thermometer Browse Data
KASACR Ka-Band Scanning ARM Cloud Radar Browse Data
KAZR Ka ARM Zenith Radar Browse Data
KAZRARSCL Active Remote Sensing of CLouds (ARSCL) product using Ka-band ARM Zenith Radars Browse Data
KAZRCOR KAZR Corrected Data Browse Data
MET Surface Meteorological Instrumentation Browse Data
MFRSR Multifilter Rotating Shadowband Radiometer Browse Data
MPL Micropulse Lidar Browse Data
MPLCMASK Cloud mask from Micropulse Lidar Browse Data
MWACR Marine W-Band (95 GHz) ARM Cloud Radar Browse Data
MWR Microwave Radiometer Browse Data
MWR3C Microwave Radiometer, 3 Channel Browse Data
NEPHELOMETER Nephelometer Browse Data
OZONE Ozone Monitor Browse Data
PBLHT Planetary Boundary Layer Height Browse Data
PSAP Particle Soot Absorption Photometer Browse Data
RAIN Rain Gauge Browse Data
RWP Radar Wind Profiler Browse Data
SACRADVVAD SACR Advance Velocity Azimuth Display Browse Data
SACRCOR Scanning ARM Cloud Radar Corrections Browse Data
SKYRAD Sky Radiometers on Stand for Downwelling Radiation Browse Data
SONDE Balloon-Borne Sounding System Browse Data
SONDEPARAM convective parameters derived from radiosonde data Browse Data
TSI Total Sky Imager Browse Data
VDIS Video Disdrometer Browse Data
VISST Minnis Cloud Products Using Visst Algorithm Browse Data
WACRARSCL W-band Cloud Radar Active Remote Sensing of Cloud Browse Data
XSACR X-Band Scanning ARM Cloud Radar Browse Data