Example
vceil25k Archive Data Plot
Datastream : VCEIL25K
Vaisala Ceilometer (VCEIL): cloud base heights, 25,000 feet max range
Active Dates
1996.10.11 - 2012.10.03
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 ) |
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 ) |
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 ) |
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 ) |
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
- 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 (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