PARSIVEL
Marine ARM GPCI Investigations of Clouds (MAGIC): Parsivel Disdrometer support for MAGIC
1 October 2012 - 30 September 2013
Lead Scientist: Pavlos Kollias
Observatory: amf, mag
Retrievals of cloud and precipitation properties during the MAGIC campaign relied critically on the calibration of the AMF2 radar systems. For MAGIC this included the KAZR and M-WACR, both fixed zenith-pointing systems, and the 1290 MHz beam steerable wind profiler. Calibration methods rely on the zenith pointing cloud radars being co-located or within close proximity of a Scanning ARM Cloud Radar (SACR). The scanning systems are calibrated by periodically viewing corner reflectors of known size and distance from the radars. When the scanning systems are viewing the same cloud volumes in space and time as the vertically pointing systems, cross-calibrations can be performed. The AMF2 SACR was not deployed during MAGIC and therefore calibration of the zenith pointing cloud radars was not possible using standard procedures.
As a means to monitor and provide constraints on the calibration of the radars a disdrometer was deployed on the ship during MAGIC. The AMF2 has a 2-dimensional video disdrometer (2DVD) but this system was considered impractical for ship deployment (calibration and vibration concerns). Accurately measuring rainfall on ships, and even more so drop size distributions, was challenging due to ship distortions of the wind flow (e.g. Yuter and Parker, 2001). This was particularly true in strong winds which were common during MAGIC due to the ship cruising speed and the prevailing winds along the ship track. Ship vibrations were problematic for impact disdrometers as were the rather large vertical motions (heave) of the ship expected during MAGIC (+/- 1 to 2 m/s being common). Based on discussions with many ASR scientists and review of what literature is available, the Parsivel optical disdrometer appeared to provide a good choice for measuring drop size distributions required to calibrate the ARM radars.
Co-Investigators
Brad Orr |
Timeline
- Parent Campaign
- Sibling Campaign
Related Publications
2016
Kollias P and MJ Bartholomew. 2016. Parsivel Disdrometer Support for MAGIC Field Campaign Report. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-16-033. 10.2172/1255440.
2015
Kalmus P, S Wong, and J Teixeira. 2015. "The Pacific Subtropical Cloud Transition: A MAGIC Assessment of AIRS and ECMWF Thermodynamic Structure." IEEE Geoscience and Remote Sensing Letters, 12(7), 10.1109/lgrs.2015.2413771.
View All Related Publications
Campaign Data Sets
IOP Participant | Data Source Name | Final Data |
---|---|---|
Mary Jane Bartholomew | disdro | Order Data |
MAG Data Sources
Name | Full Name | 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 |
CEILSHIPCOR |
Ceilometer Corrected for Ship Motion | Browse Data |
CPC |
Condensation Particle Counter | Browse Data |
HSRL |
High Spectral Resolution Lidar | Browse Data |
HSRLSHIPCOR |
HSRL Corrected for Ship Motion | Browse Data |
HTDMA |
Humidified Tandem Differential Mobility Analyzer | Browse Data |
INTERPSONDE |
Interpolated Sonde | Browse Data |
IRT |
Infrared Thermometer | Browse Data |
KAZR |
Ka ARM Zenith Radar | Browse Data |
KAZRSHIPCOR |
KAZR Ship Motion Correction | Browse Data |
MARINEMET |
Marine Surface Meteorological Instrumentation | Browse Data |
MPL |
Micropulse Lidar | Browse Data |
MPLCMASK |
Cloud mask from Micropulse Lidar | Browse Data |
MPLPOLFSSHIPCOR |
MPL Corrected for Ship Motion | Browse Data |
MWACR |
Marine W-Band (95 GHz) ARM Cloud Radar | Browse Data |
MWACRSHIPCOR |
MWACR Ship Motion Correction | Browse Data |
MWR |
Microwave Radiometer | Browse Data |
MWR3C |
Microwave Radiometer, 3 Channel | Browse Data |
MWRRET |
MWR Retrievals | Browse Data |
NAV |
Navigational Location and Attitude | Browse Data |
NAVBE |
Navigational Location and Attitude Best Estimate | Browse Data |
NEPHELOMETER |
Nephelometer | Browse Data |
OZONE |
Ozone Monitor | Browse Data |
PBLHT |
Planetary Boundary Layer Height | Browse Data |
PRP |
Portable Radiation Package | Browse Data |
PSAP |
Particle Soot Absorption Photometer | Browse Data |
RWP |
Radar Wind Profiler | Browse Data |
SASZE |
Shortwave Array Spectroradiometer-Zenith | Browse Data |
SONDE |
Balloon-Borne Sounding System | Browse Data |
SONDEGRID |
Gridded Sonde VAP Product | Browse Data |
S-TABLE |
Stabilized Platform | Browse Data |
TSI |
Total Sky Imager | Browse Data |
UHSAS |
Ultra-High Sensitivity Aerosol Spectrometer | Browse Data |