Datastream : PARS2

Parsivel2 Laser Disdrometer

Active Dates
2012.09.24 - 2017.03.26

Measurement Categories
Atmospheric State, Cloud Properties

Originating Instrument
Laser Disdrometer (LDIS)


Only measurements considered scientifically relevant are shown below by default.

Show all measurements

Measurement Units Variable
Altitude above mean sea level m alt
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Class size width mm class_size_width ( particle_size )
Diameter of largest drop observed mm diameter_max ( time )
Diameter of smallest drop observed mm diameter_min ( time )
Radar reflectivity calculated by the ingest dBZ equivalent_radar_reflectivity ( time )
Radar reflectivity from the manufacturer's software dBZ equivalent_radar_reflectivity_ott ( time )
Fall velocity calculated after Lhermite m/s fall_velocity_calculated ( raw_fall_velocity )
Heating current amp heating_current ( time )
Intercept parameter, assuming an ideal Marshall-Palmer type distribution 1/(m^3 mm) intercept_parameter ( time )
Laserband amplitude counts laserband_amplitude ( time )
North latitude degree_N lat
Liquid water content mm^3/m^3 liquid_water_content ( time )
Liquid water distribution mean, assuming an ideal Marshall-Palmer type distribution mm liquid_water_distribution_mean ( time )
East longitude degree_E lon
Median volume diameter, assuming an ideal Marshall-Palmer type distribution mm median_volume_diameter ( time )
Moment 1 from the observed distribution mm/m^3 moment1 ( time )
Moment 2 from the observed distribution mm^2/mm^3 moment2 ( time )
Moment 3 from the observed distribution mm^3/m^3 moment3 ( time )
Moment 4 from the observed distribution mm^4/m^3 moment4 ( time )
Moment 5 from the observed distribution mm^5/mm^3 moment5 ( time )
Moment 6 from the observed distribution mm^6/m^3 moment6 ( time )
Meteorological optical range visibility m mor_visibility ( time )
Number density of drops of the diameter corresponding to a particular drop size class per unit volume 1/(m^3 mm) number_density_drops ( time, particle_size )
Number of particles detected count number_detected_particles ( time )
Particle class size average mm particle_size ( particle_size )
Precipitation intensity mm/hr precip_rate ( time )
Quality check results on field: Time offset from midnight unitless qc_time ( time )
Radar velocity dBz radar_reflectivity ( time )
Radar reflectivity dBZ radar_reflectivity_sband ( time )
Fall velocity classes oserved by Parsivel2 m/s raw_fall_velocity ( raw_fall_velocity )
Raw drop size distribution Counts raw_spectrum ( time, particle_size, raw_fall_velocity )
Temperature in sensor degC sensor_temperature ( time )
Sensor voltage volt sensor_voltage ( time )
Slope parameter, assuming an ideal Marshall-Palmer type distribution 1/mm slope_parameter ( time )
Time offset from midnight time ( time )
Time offset from base_time time_offset ( time )
SYNOP WaWa Table 4680 unitless weather_code ( time )


Eastern North Atlantic
ENAC1 Browse DataGraciosa Island, Azores, Portugal
Southern Great Plains
SGPC1 Browse DataCentral Facility, Lamont, OK
SGPE13 Browse DataLamont, OK (Extended)
SGPI8 Browse DataTonkawa, OK (NE radar wind profiler site, Intermediate / Auxiliary)
SGPI9 Browse DataBillings, OK (SE radar wind profiler site, Intermediate / Auxiliary)
SGPI10 Browse DataLamont, OK (NW radar wind profiler site, Intermediate / Auxiliary)
ARM Mobile Facility
ACXS1 Browse DataACX Supplemental Facility 1
ASIM1 Browse DataAscension Island, South Atlantic Ocean; AMF1
AWRM1 Browse DataMcMurdo Station Ross Ice Shelf, Antarctica; AMF2
MAGS1 Browse DataMAG Supplemental Facility 1
MAOS10 Browse DataManacapuru, Amazonas, Brazil; Supplemental Site


Jennifer Delamere
University of Alaska Fairbanks

Yan Shi
Pacific Northwest National Laboratory
(509) 375-6858

Mary Jane Bartholomew
Brookhaven National Laboratory
(631) 344-2444