[Dataset Title]
OAP Composite Distribution data from NRC Convair580 flights collected during the ICICLE project out of Rockford Illinois

[Dataset Author(s)]
Data quality and processing.
Lead: Alexei Korolev, Environment and Climate Change Canada  alexei.korolev@canada.ca
Ivan Heckman, Environment and Climate Change Canada ivan.heckman@canada.ca

[Custodianship]
ECCC OAP-2DC: Environment and Climate Change Canada
ECCC HVPS: Environment and Climate Change Canada
ECCC 2DS: Environment and Climate Change Canada
NRC 2DS: National Research Council
ECCC FSSP: Environment and Climate Change Canada
ECCC CDP: Environment and Climate Change Canada
NRC FCDP: National Research Council

[Acknowledgements]
ECCC OAP-2DC, 2DS, and HVPS data collection was performed by Mike Harwood (ECCC) and Jason Iwachow (ECCC)
NRC FCDP and 2DS data collection was performed by Leonid Nichman (NRC) and Mengistu Wolde (NRC)

[Calibrations]
n/a

[Funding]
The ICICLE project was funded by the Federal Aviation Administration (FAA). Principal Investigator Stephanie DiVito.

[Time of Interest]
2019-01-28 20:08:36 - 2019-03-07 21:06:54 UTC

[Area of Interest]
39.3290 to 43.3550 N    -91.9840 to -84.5950 E

[Data Frequency]
1 second

[Data Spatial Type] 
vector

[General Dataset Description] 
Composite liquid particle size distribution (PSD) consists of three distributions measured by a forward scattering probe and small and large size range OAPs: typically, 2DS (nominal range 10-1280um) and HVPS (nominal range 150um-19.2mm). The best performance 2DS (H or V channel) was selected to represent small size range PSD. Flights 19, 21, 22, 25, and 27 do not have coverage of the large size particles because of the malfunctioning of the HVPS. The small and large size distributions are merged at 750um. The bin particle concentrations in the composite PSD are normalized on the width of the size bins: 3um for FSSP; 10um for 2DS; 150um for HVPS.
Processing Software: ECCC D2G

Composite ice particle size distribution (PSD) consists of two distributions measured by small and large size range OAPs: typically, 2DS (nominal range 10-1280um) and HVPS (nominal range 150um-19.2mm). The best performance 2DS (H or V channel) was selected to represent small size range PSD. Flights 19, 21, 22, 25, and 27 do not have coverage of the large size particles because of the malfunctioning of the HVPS. The small and large size distributions are merged at 750um. The bin particle concentrations in the composite PSD are normalized on the width of the size bins: 10um for 2DS; 150um for HVPS. Because of the high uncertainty of the depth-of-field definition and contaminations by diffraction artifacts, the first three 2DS size bins were excluded from the composite OAP PSD. The concentrations are for particles that have been classified as ice, given by two methods of measuring any particle, area equivalent diameter and maximal diameter.
Processing Software: ECCC D2G

[File Names]
OAPComposite_Distributions.zip
	Includes : 	ICICLE_IceLiquidComposite_Distributions_FXX.nc  netcdf4_classic format

[Data restrictions]
Restricted
Password requested
Preliminary data restricted to ICICLE participants

[Digital Object Identifier (DOI)]
no DOI

[GCMD Keywords]
EARTH SCIENCE ATMOSPHERE    CLOUDS               CLOUD MICROPHYSICS  CLOUD LIQUID WATER/ICE                                          
05ac9d3e-bc44-41fa-ace0-c41bf3ebee97