Example vceil25k Archive Data Plot

Datastream : VCEIL25K

Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range

Active Dates
1996.10.11 - 2013.02.21

Measurement Categories
Aerosols, Cloud Properties

Originating Instrument
Vaisala Ceilometer (VCEIL)

Measurements

Only measurements considered scientifically relevant are shown below by default.

Show all measurements

Measurement Units Variable
Altitude above mean sea level m alt
Altitude of highest signal m alt_highest_signal ( time )
Background light mV background_light ( time )
Backscattered radiation
Backscatter 		1/(srad*km*10000) backscatter ( time, range )
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Detection status unitless detection_status ( time )
Cloud base height
Lowest cloud base height detected 		m first_cbh ( time )
Laser pulse energy % laser_pulse_energy ( time )
Laser temperature degC laser_temperature ( time )
North latitude degree_N lat
East longitude degree_E lon
Instrument measurement parameters unitless measurement_parameters ( time, string_len )
Quality check results on field: Altitude of highest signal unitless qc_alt_highest_signal ( time )
Quality check results on field: Background light unitless qc_background_light ( time )
Quality check results on field: Detection status unitless qc_detection_status ( time )
Quality check results on field: Lowest cloud base height detected unitless qc_first_cbh ( time )
Quality check results on field: Laser pulse energy unitless qc_laser_pulse_energy ( time )
Quality check results on field: Laser temperature unitless qc_laser_temperature ( time )
Quality check results on field: Receiver sensitivity unitless qc_receiver_sensitivity ( time )
Quality check results on field: Second lowest cloud base height unitless qc_second_cbh ( time )
Quality check results on field: SUM of detected and normalized backscatter unitless qc_sum_backscatter ( time )
Quality check results on field: Third cloud base height unitless qc_third_cbh ( time )
Quality check results on field: Tilt angle unitless qc_tilt_angle ( time )
Quality check results on field: Time offset from midnight unitless qc_time ( time )
Quality check results on field: Vertical visibility unitless qc_vertical_visibility ( time )
Quality check results on field: Window contamination unitless qc_window_contamination ( time )
Quality check results on field: Window transmission estimate unitless qc_window_transmission ( time )
Distance to the center of the corresponding range bin m range ( range )
Receiver sensitivity % receiver_sensitivity ( time )
Cloud base height
Second lowest cloud base height 		m second_cbh ( time )
Ceilometer status indicator unitless status_flag ( time )
Warning, alarm, and internal status information unitless status_string ( time, string_len )
SUM of detected and normalized backscatter 1/srad sum_backscatter ( time )
Cloud base height
Third cloud base height 		m third_cbh ( time )
Tilt angle degree tilt_angle ( time )
Time offset from midnight time ( time )
Time offset from base_time time_offset ( time )
Vertical visibility m vertical_visibility ( time )
Window contamination mV window_contamination ( time )
Window transmission estimate % window_transmission ( time )

Locations

  • Summit Station, Greenland (SMT)
    • North Slope Alaska (NSA)
      • Central Facility, Barrow AK (C1)
      • Central Facility, Atqasuk AK (C2)
    • Southern Great Plains (SGP)
      • Hillsboro, KS (Boundary) (B1)
      • Vici, OK (Boundary) (B4)
      • Morris, OK (Boundary) (B5)
      • Purcell, OK (B6)
      • Central Facility, Lamont, OK (C1)
    • Tropical Western Pacific (TWP)
      • Central Facility, Manus I., PNG (C1)
      • Central Facility, Nauru Island (C2)
      • Central Facility, Darwin, Australia (C3)
    • ARM Mobile Facility (FKB)
      • Black Forest, Germany (M1)
    • ARM Mobile Facility (GAN)
      • Gan Airport, Gan Island, Maldives (M1)
    • ARM Mobile Facility (GRW)
      • Graciosa Island, Azores, Portugal (M1)
    • ARM Mobile Facility (HFE)
      • Shouxian, Anhui, China (M1)
      • Tai Hu (lake), Zhejiang/Jiangsu, China; Supplemental (S1)
    • ARM Mobile Facility (MAG)
      • Los Angeles, CA to Honolulu, HI - container ship Horizon Spirit (M1)
    • ARM Mobile Facility (NIM)
      • Niamey, Niger (M1)
    • ARM Mobile Facility (PGH)
      • ARIES Observatory, Nainital, Uttarkhand, India (M1)
    • ARM Mobile Facility (PVC)
      • Highland Center, Cape Cod MA; AMF 1 (M1)
    • ARM Mobile Facility (PYE)
      • Point Reyes, CA (M1)
    • ARM Mobile Facility (SBS)
      • Steamboat Springs CO, Valley Site (M1)
    • SHEBA (Surface HEat Budget of the Arctic) (SHB)
      • Ice Station SHEBA (C1)

    Contact(s)

    Victor Morris
    (509) 372-6144
    victor.morris@pnnl.gov