Datastream : MPLPOLFS
Micropulse Lidar (MPL) polarized, fast sampling: cloud base and top heights
Active Dates
2010.06.01 - 2012.10.04
Measurement Categories
Cloud Properties
Originating Instrument
Micropulse Lidar (MPL)
Measurements
Only measurements considered scientifically relevant are shown below by default.
Show all measurements
Measurement | Units | Variable |
---|---|---|
Altitude above mean sea level | m | alt |
Background signal, copol data | Counts/microsecond | background_signal_co_pol ( time ) |
Background signal, cross pol data | Counts/microsecond | background_signal_cross_pol ( time ) |
Background signal standard deviation, copol data | Counts/microsecond | background_signal_std_co_pol ( time ) |
Background signal standard deviation, cross pol data | Counts/microsecond | background_signal_std_cross_pol ( time ) |
Base time in Epoch | seconds since 1970-1-1 0:00:00 0:00 | base_time |
Dead time correction flag | unitless | dead_time_corrected ( time ) |
Deadtime correction factor | unitless | deadtime_correction ( num_deadtime_corr ) |
Laboratory measured counts used to calculate the deadtime correction samples | kc/s | deadtime_correction_counts ( num_deadtime_corr ) |
Detector temperature | C | detector_temp ( time ) |
Energy output per pulse of transmitted laser beam at 532 nm (Doubled Nd-YLF) | uJ | energy_monitor ( time ) |
Bin number of first data. Tells where pretrigger timing ends and end of region for background data sampling | unitless | first_data_bin ( time ) |
Height above ground of the center of corresponding range_bin | km | height ( range_bins ) |
Bin number associated with zero height and time where laser transmit occurs | unitless | laser_fire_bin ( time ) |
Laser temperature | C | laser_temp ( time ) |
North latitude | degree_N | lat |
East longitude | degree_E | lon |
Maximum altitude retrieved from multichannel scalar card. | km | max_altitude |
MCS mode register, value is either 167 or 199. | unitless | mcs_mode |
Number of bins stored in data block | count | num_bins |
Number of detector channels | count | num_channels |
Overlap correction factor | unitless | overlap_correction ( num_overlap_corr ) |
Heights for overlap correction | km | overlap_correction_heights ( num_overlap_corr ) |
Polarization control enabled flag | unitless | polarization_control ( time ) |
Polarization control voltage setting | volts | polarization_control_voltage ( time ) |
Preliminary cloud base height above ground level | km | preliminary_cbh ( time ) |
Repetition rate, or Trigger Frequency of the laser | Hz | pulse_rep |
Quality check results on field: Detector temperature | unitless | qc_detector_temp ( time ) |
Quality check results on field: Energy output per pulse of transmitted laser beam at 532 nm (Doubled Nd-YLF) | unitless | qc_energy_monitor ( time ) |
Quality check results on field: Laser temperature | unitless | qc_laser_temp ( time ) |
Quality check results on field: Preliminary cloud base height above ground level | unitless | qc_preliminary_cbh ( time ) |
Quality check results on field: Distance between initial range_bin and the laser flash | unitless | qc_range_offset ( time ) |
Quality check results on field: Telescope temperature | unitless | qc_scope_temp ( time ) |
Quality check results on field: Attenuated backscatter, copol | unitless | qc_signal_return_co_pol ( time ) |
Quality check results on field: Attenuated backscatter, cross pol | unitless | qc_signal_return_cross_pol ( time ) |
Quality check results on field: Time offset from midnight | unitless | qc_time ( time ) |
Distance from transceiver to center of corresponding range_bin | km | range ( range_bins ) |
Time in seconds for each range bin of multichannel scalar card. | seconds | range_bin_time ( time ) |
Width of range-bins calculated from range_bin_time | km | range_bin_width ( time ) |
Distance from leading edge of first range bin to the center of each bin. | km | range_bins ( range_bins ) |
Distance between initial range_bin and the laser flash | km | range_offset ( time ) |
Telescope temperature | C | scope_temp ( time ) |
Number of laser pulses summed during averaging interval | count | shots_per_avg |
Attenuated backscatter, copol | Counts/microsecond | signal_return_co_pol ( time, range_bins ) |
Attenuated backscatter, cross pol | Counts/microsecond | signal_return_cross_pol ( time, range_bins ) |
Time offset from midnight | time ( time ) | |
Time offset from base_time | time_offset ( time ) |
Locations
- North Slope Alaska (NSA)
- Central Facility, Barrow AK (C1)
- Southern Great Plains (SGP)
- Central Facility, Lamont, OK (C1)
- Tropical Western Pacific (TWP)
- Central Facility, Manus I., PNG (C1)
- ARM Mobile Facility (GAN)
- Gan Airport, Gan Island, Maldives (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 (SBS)
- Steamboat Springs CO, Thunderhead Lodge (S1)
Contact(s)
Richard Coulter
(630) 252-5833
rlcoulter@anl.gov
Timothy Martin
technical contact
(630) 252-8708
tjmartin@anl.gov