Cloud Radar IOP

2 April 1997 - 22 April 1997

Lead Scientist: Brooks Martner

Observatory: SGP

The objectives of the Cloud Radar IOP are to:

  • support the calibration of the ARM millimeter cloud radar and evaluate the spatial versus temporal variability of cloud properties as seen by cloud radars,
  • obtain in-situ measurements of cloud properties to validate retrieval algorithms, and
  • obtain in-situ measurements of aerosol properties during clear-sky conditions.

The ETL Radar Meteorology and Oceanography Division will field their NOAA/K scanning cloud radar near the new ARM millimeter cloud profiling radar (mmCR) at the ARM SGP Central Facility. At times, both cloud radars will operate in the vertically-pointing mode for purposes of evaluating and perfecting the performance of the ARM mmCR. At other times, the excellent scanning capabilities of the NOAA/K will be employed to examine how well the temporal variability of cloudiness measured by the ARM mmCR, which is vertically-pointing only, is related to the horizontal variability of cloudiness and cloud geometry. In-situ measurements of hydrometeor sizes and concentrations will be made by the University of North Dakota Citation aircraft , which is capable of sampling both low and high altitude clouds. The PNNL Gulfstream-1 aircraft will concurrently sample low clouds whenever low and high clouds are present over the Central Facility. Spiral and stair-step flight paths through the cloud layers directly over or near (within 10 to 50 km of) the Central Facility in a variety of cloud conditions will be necessary for validating microphysical retrievals. The Gulfstream aircraft will also fly aerosol missions over the site in clear-sky conditions, as more fully described in the Aerosol IOP home page.

Additional Information

For more information about the Cloud Radar IOP, contact Dan Rodriguez

Campaign Data Sets

IOP Participant Data Source Name Final Data
Peter Daum G-1 Order Data
Brooks Martner Radar Order Data
Michael Poellot Citation Order Data