The following tables list the CL61 netCDF dimensions and variables. For the full list of attributes, types, and dimensions associated with each variable, see NetCDF example file.
| Dimension | Description |
|---|---|
| time | Temporal grid of the measurements, length unlimited. |
| range | Range grid vector with a resolution of 4.8 meters and a length of 3276. |
| layer | Vector that gives the number of the observed cloud layer, ordered from lowest to highest with length 5. |
| Variable | Attribute | Value/Description |
|---|---|---|
|
cloud_base_heights |
cloud_base_heights:units |
m, ft |
| cloud_base_heights:long_name |
Heights (range) of the detected cloud bases |
|
| cloud_base_heights:coordinates | Time layer longitude latitude | |
|
vertical_visibility |
vertical_visibility:units |
m, ft |
| vertical_visibility:long_name |
Visibility in the direction of the instrument beam |
|
| vertical_visibility:coordinates | Time longitude latitude | |
|
p_pol |
p_pol:units |
1/(m*sr) |
| p_pol:long_name |
Parallel-polarized component of the backscattered light |
|
| p_pol:coordinates | Time range longitude latitude | |
| p_pol:averaging_time_in_seconds | 60 | |
|
x_pol |
x_pol:units |
1/(m*sr) |
| x_pol:long_name |
Cross-polarized component of the backscattered light |
|
| x_pol:coordinates | Time range longitude latitude | |
| x_pol:averaging_time_in_seconds | 60 | |
|
beta_att |
beta_att:units |
1/(m*sr) |
| beta_att:long_name |
Attenuated volume backscatter coefficient |
|
| beta_att:coordinates | Time range longitude latitude | |
| beta_att:averaging_time_in_seconds | 60 | |
|
linear_depol_ratio |
linear_depol_ratio:long_name |
Linear depolarization ratio of the backscatter volume |
| linear_depol_ratio:coordinates | Time range longitude latitude | |
| linear_depol_ratio:averaging_time_in_seconds | 60 | |
|
time |
time:units |
Seconds since 1970-01-01 00:00:00.000 |
| time:long_name | Time | |
| time:axis | T | |
| time:standard_name | time | |
| time:cf_role | Profile_id | |
| time:comment |
End of the averaging period |
|
|
range |
range:units |
m, ft |
| range:long_name |
Measurement distance from the instrument in the direction of the transmitted laser beam |
|
| range:axis | Z | |
| range:positive | Up | |
|
layer |
layer:units |
Layer |
| layer:long_name |
Number of the observed cloud layer (1 ... 5) |
|
|
longitude |
longitude:units |
Degrees east |
| longitude:long_name |
Longitude |
|
| longitude:standard_name | longitude | |
|
latitude |
latitude:units |
Degrees north |
| latitude:long_name |
Latitude |
|
| latitude:standard_name | latitude | |
|
elevation |
elevation:units |
m Always in meters |
| elevation:long_name | Elevation | |
| elevation:standard_name | ground_level_altitude | |
| elevation:comment |
Measurement site height above or below a fixed reference point, most commonly a reference geoid |
|
|
azimuth_angle |
azimuth_angle:units |
Degrees |
| azimuth_angle:long_name |
Measurement azimuth angle |
|
| azimuth_angle:standard_name | sensor_azimuth_angle | |
| azimuth_angle:comment |
Reference direction: north |
|
|
beta_att_sum |
beta_att_sum:units |
1/(10^4*sr) |
| beta_att_sum:long_name |
Scaled integral of the attenuated volume backscatter coefficient |
|
|
beta_att_noise_level |
beta_att_noise_level:long_name |
Unitless number describing the noise level of the attenuated volume backscatter coefficient |
|
tilt_correction |
tilt_correction:long_name |
Tilt correction |
| tilt_correction:comment |
|
|
|
tilt_angle |
tilt_angle:units |
Degrees |
| tilt_angle:long_name |
Instrument tilt angle from the vertical |
|
| tilt_angle:standard_name | zenith_angle | |
|
height_offset |
height_offset:units |
m Always in meters |
| height_offset:long_name |
Instrument height offset to reference level. |
|
| height_offset:comment |
Positive, if the instrument is placed, for example, on the roof of a building. Negative, if the instrument is placed below the ground level altitude, for example, in a pit. This value is added to the cloud base height results. |
|
|
airplane_filter_max_range |
airplane_filter_max_range:units |
m, ft |
| airplane_filter_max_range:long_name |
Airplane filter max. range. |
|
| airplane_filter_max_range:comment |
User configured value,
|
|
|
sky_condition_total_cloud _cover |
sky_condition_total_cloud_cover:units |
Oktas |
| sky_condition_total_cloud_cover:long_name |
Total amount of cloud cover. |
|
| sky_condition_total_cloud_cover:comment |
Aggregated across layers. |
|
| sky_condition_total_cloud_cover:coordinates | Time longitude latitude | |
|
sky_condition_cloud_layer _covers |
sky_condition_cloud_layer_covers:units |
Oktas |
| sky_condition_cloud_layer_covers:long_name |
Amount of cloud cover in different cloud layers. |
|
| sky_condition_cloud_layer_covers:coordinates | Time layer longitude latitude | |
| sky_condition_cloud_layer_covers:comment |
For up to 5 layers |
|
|
sky_condition_cloud_layer _heights |
sky_condition_cloud_layer_heights:units |
m, ft |
| sky_condition_cloud_layer_heights:long_name |
Height of different cloud layers. |
|
| sky_condition_cloud_layer_heights:coordinates | Time layer longitude latitude | |
| sky_condition_cloud_layer_heights:comment |
For up to 5 layers |
|
|
cloud_penetration_depth |
cloud_penetration_depth:units |
m, ft |
| cloud_penetration_depth:long_name |
Cloud penetration depth in the direction of the instrument beam |
|
| cloud_penetration_depth:coordinates | Time layer longitude latitude | |
|
cloud_thickness |
cloud_thickness:units |
m, ft |
| cloud_thickness:long_name |
Cloud thickness in the direction of the instrument beam |
|
| cloud_thickness:coordinates | Time layer longitude latitude | |
|
precipitation_detection |
precipitation_detection:long_name |
Detection of ground reaching precipitation |
| precipitation_detection:comment |
|
|
| precipitation_detection:coordinates | Time longitude latitude | |
|
fog_detection |
fog_detection:long_name |
Detection of fog |
| fog_detection:comment |
|
|
| fog_detection:coordinates | Time longitude latitude | |
|
receiver_gain |
receiver_gain:long_name |
Receiver gain status |
| receiver_gain:comment |
|
|
|
range_resolution |
range_resolution:units |
m, ft |
| range_resolution:long_name |
Range resolution. |
|
| range_resolution:comment |
Distance between consecutive profile elements. |
|
|
cloud_calibration_factor |
cloud_calibration_factor:long_name |
Factory cloud calibration value. |
| cloud_calibration_factor:comment |
Instrument-specific
|
|
|
cloud_calibration_factor_user |
cloud_calibration_factor_user:long_name |
User set cloud calibration value. |
| cloud_calibration_factor_user:comment |
Instrument-specific
|
|
|
overlap_function |
overlap_function:long_name |
Instrument-specific overlap function. |
| overlap_function:comment |
Shares the vertical resolution of profiles. |
| Variable | Attribute | Description |
|---|---|---|
| time | time:units |
Seconds since 1970-01-01 00:00:00.000 The timestamp of the monitoring values. Common reporting frequency with profiles. |
| time:long_name | Time | |
| time:axis | T | |
| time:standard_name | time | |
| window_condition | window_condition:units |
Percent Window condition percentage between 100 and 0 representing a clean and a completely dirty window, respectively |
| window_condition:long_name | Window condition | |
| window_condition:comment | 100 for a clean, 0 for a totally dirty window | |
| laser_power_percent | laser_power_percent:units |
Percent Point measurement of the laser output power, with a PIN photodiode at CLL board |
| laser_power_percent:long_name | Laser power percent | |
| background_radiance | background_radiance:long_name |
Background radiance Measurement of the amount of sky background radiance, at the receiver field-of-view, arbitrary units |
| background_radiance:range | [0 1747] | |
| internal_temperature | internal_temperature:units | Celsius Optics unit - circuit board temperature |
| internal_temperature:long_name | Internal temperature | |
| internal_humidity | internal_humidity:units | RH Optics unit - circuit board humidity |
| internal_humidity:long_name | Internal humidity | |
| internal_humidity:comment | Percent (%RH) | |
| internal_pressure | internal_pressure:units |
hPa Optics unit - circuit board pressure |
| internal_pressure:long_name | Internal pressure | |
| laser_temperature | laser_temperature:units |
Celsius Temperature of the laser chip, measured inside the Peltier cooled package of the laser diode |
| laser_temperature:long_name | Laser temperature | |
| window_blower | window_blower:long_name |
Window blower Window blower on/off information |
| window_blower:comment |
|
|
| internal_heater | internal_heater:long_name | Internal heater |
| internal_heater:comment |
|
|
| window_blower_heater | window_blower_heater:long_name |
Window blower heater Window blower heater on/off information |
| window_blower_heater:comment |
|
|
|
transmitter_enclosure_ temperature |
transmitter_enclosure_temperature:units |
Celsius Hot side temperature of the laser peltier |
| transmitter_enclosure_temperature:long_name | Transmitter enclosure temperature |
| Variable | Attribute | Description |
|---|---|---|
| time | time:units |
Seconds since 1970-01-01 00:00:00.000 The timestamp of the reported statuses. Common reporting frequency with profiles. |
| time:long_name | Time | |
| time:axis | T | |
| time:standard_name | time | |
| Device_controller_temperature | Device_controller_temperature:long_name | Controller unit CLC temperature |
| Device_controller_electronics | Device_controller_electronics:long_name | Controller unit CLC electronics |
| Device_controller_overall | Device_controller_overall:long_name | Controller unit CLC overall, the most severe status of CLC statuses |
| Optics_unit_accelerometer | Optics_unit_accelerometer:long_name | Optics unit CLO accelerometer |
| Optics_unit_electronics | Optics_unit_electronics:long_name | Optics unit CLO electronics |
| Optics_unit_overall | Optics_unit_overall:long_name | Optics unit CLO overall, the most severe status of CLO statuses |
| Optics_unit_memory | Optics_unit_memory:long_name | Optics unit CLO parameter memory |
| Optics_unit_tilt_angle | Optics_unit_tilt_angle:long_name | Optics unit CLO tilt angle |
| Receiver_electronics | Receiver_electronics:long_name | Receiver CLR electronics |
| Receiver_overall | Receiver_overall:long_name | Receiver CLR overall, the most severe status of CLR statuses |
| Receiver_memory | Receiver_memory:long_name | Receiver CLR parameter memory |
| Receiver_voltage | Receiver_voltage:long_name | Receiver voltage |
| Receiver_solar_saturation | Receiver_solar_saturation:long_name | Receiver solar saturation |
| Window_blocking | Window_blocking:long_name | Window blocking |
| Window_condition | Window_condition:long_name | Window condition |
| Window_blower_fan | Window_blower_fan:long_name | Window blower fan |
| Window_blower_heater | Window_blower_heater:long_name | Window blower heater |
| Servo_drive_electronics | Servo_drive_electronics:long_name | Servo drive CLS electronics |
| Servo_drive_overall | Servo_drive_overall:long_name | Servo drive CLS overall, the most severe status of CLS statuses |
| Servo_drive_memory | Servo_drive_memory:long_name | Servo drive CLS parameter memory |
| Servo_drive_control | Servo_drive_control:long_name | Servo drive CLS control |
| Servo_drive_ready | Servo_drive_ready:long_name | Servo drive CLS ready |
| Transmitter_electronics | Transmitter_electronics:long_name | Transmitter CLT electronics |
| Transmitter_light_source | Transmitter_light_source:long_name | Transmitter CLT light source |
| Transmitter_light_source_power | Transmitter_light_source_power:long_name | Transmitter CLT light source power |
| Transmitter_overall | Transmitter_overall:long_name | Transmitter CLT overall, the most severe status of CLT statuses |
| Transmitter_light_source_safety | Transmitter_light_source_safety:long_name | Transmitter light source safety |
| Transmitter_memory | Transmitter_memory:long_name | Transmitter CLT parameter memory |
| Maintenance_overall | Maintenance_overall:long_name | Device maintenance need |
| Device_overall | Device_overall:long_name | The most severe of all statuses |
| Recently_started | Recently_started:long_name | Recently started |
| Measurement_status | Measurement_status:long_name | Measurement status |
| Datacom_overall | Datacom_overall:long_name | Data communication status |
|
Measurement_data_ destination_not_set |
Measurement_data_destination_not_set:long_name | Is the data destination set |
| Inside_heater | Inside_heater:long_name | Inside heater |
| Receiver_sensitivity | Receiver_sensitivity:long_name | Too big of a decrease signals receiver failure |
| Data_generation_status | Data_generation_status:long_name | Data generation status |