Dataset
NCAS Long Term Observations at Chilbolton Observatory: birdbath and volume scans from the NCAS X-Band Mobile Radar unit 2 deployed at the NCAS Chilbolton Atmospheric Observatory (CAO), v1.0.0 (20231001-20250306)
Update Frequency: Not Planned
Latest Data Update: 2026-08-20
Status: Completed
Online Status: ONLINE
Publication State: Preview
Publication Date:
THIS RECORD HAS NOT BEEN PUBLISHED YET - PREVIEW ONLY!
Abstract
Birdbath and volume scan measurements from the NCAS X-Band Mobile Radar unit 2 deployed at the NCAS Chilbolton Atmospheric Observatory (CAO). These observations were taken as part of NCAS Long Term Observations at Chilbolton Observatory between 20231001 and 20250306.
Data products from this deployment include: birdbath, vol
For further details of this deployment and the associated dataset please see the internal file metadata.
These data conform to the NCAS data standards and are available under the UK Government Open Licence agreement. Acknowledgement of NCAS as the data provider is required whenever and wherever these data are used.
Citable as: [ PROVISIONAL ] Rhodes, L. (9999): NCAS Long Term Observations at Chilbolton Observatory: birdbath and volume scans from the NCAS X-Band Mobile Radar unit 2 deployed at the NCAS Chilbolton Atmospheric Observatory (CAO), v1.0.0 (20231001-20250306). NERC EDS Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/7a268bc6e71f4a71826d90463fd85316
Abbreviation: Not defined
Keywords: NCAS, observation measurements
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Access to these data is available to any registered CEDA user. Please Login or Register for a CEDA account to gain access.
Use of these data is covered by the following licence(s): http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. |
| Data lineage: |
Data were processed and prepared by the project team before delivery to the Centre for Environmental Data Analysis (CEDA). |
| Data Quality: |
These data have been produced in accordance to standard NCAS observational practices. This includes instrument calibration and compliance checking of data against the NCAS Data Standards.
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| File Format: |
Data are netCDF formatted.
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Related Documents
No documents related to this record were found.
Process overview
This dataset was generated by instruments deployed on platforms as listed below.
Instrument/Platform pairings
| NCAS X-Band Mobile Radar unit 2 instrument | Deployed on: NCAS Chilbolton Atmospheric Observatory (CAO) |
| Output Description | None |
- var_id: altitude
- units: meters
- long_name: altitude
- units: meters
- long_name: altitude_above_ground_level
- var_id: altitude_agl
- units: degrees
- long_name: angular_resolution_between_rays
- var_id: ray_angle_res
- long_name: antenna_angle_scan_rate
- var_id: scan_rate
- units: degrees s-1
- long_name: antenna_is_in_transition_between_sweeps
- var_id: antenna_transition
- units:
- units: degrees
- var_id: azimuth
- standard_name: ray_azimuth_angle
- long_name: azimuth_angle_from_true_north
- units: dB
- long_name: calibrated_radar_antenna_gain_h_channel
- var_id: r_calib_antenna_gain_h
- units: dB
- long_name: calibrated_radar_antenna_gain_v_channel
- var_id: r_calib_antenna_gain_v
- units: dB
- long_name: calibrated_radar_constant_h_channel
- var_id: r_calib_radar_constant_h
- units: dB
- long_name: calibrated_radar_constant_v_channel
- var_id: r_calib_radar_constant_v
- units: dB
- long_name: calibrated_radar_dbz_correction
- var_id: r_calib_dbz_correction
- units: dB
- long_name: calibrated_radar_ldr_correction_h_channel
- var_id: r_calib_ldr_correction_h
- units: dB
- long_name: calibrated_radar_ldr_correction_v_channel
- var_id: r_calib_ldr_correction_v
- units: dB
- long_name: calibrated_radar_receiver_gain_h_co_polar_channel
- var_id: r_calib_receiver_gain_hc
- units: dB
- long_name: calibrated_radar_receiver_gain_h_cross_polar_channel
- var_id: r_calib_receiver_gain_hx
- units: dB
- long_name: calibrated_radar_receiver_gain_v_co_polar_channel
- var_id: r_calib_receiver_gain_vc
- units: dB
- long_name: calibrated_radar_receiver_gain_v_cross_polar_channel
- var_id: r_calib_receiver_gain_vx
- units: dBm
- long_name: calibrated_radar_receiver_noise_h_co_polar_channel
- var_id: r_calib_noise_hc
- units: dBm
- long_name: calibrated_radar_receiver_noise_h_cross_polar_channel
- var_id: r_calib_noise_hx
- units: dBm
- long_name: calibrated_radar_receiver_noise_v_co_polar_channel
- var_id: r_calib_noise_vc
- units: dBm
- long_name: calibrated_radar_receiver_noise_v_cross_polar_channel
- var_id: r_calib_noise_vx
- long_name: calibrated_radar_receiver_slope_h_co_polar_channel
- var_id: r_calib_receiver_slope_hc
- units:
- long_name: calibrated_radar_receiver_slope_h_cross_polar_channel
- var_id: r_calib_receiver_slope_hx
- units:
- long_name: calibrated_radar_receiver_slope_v_co_polar_channel
- var_id: r_calib_receiver_slope_vc
- units:
- long_name: calibrated_radar_receiver_slope_v_cross_polar_channel
- var_id: r_calib_receiver_slope_vx
- units:
- units: dBm
- long_name: calibrated_radar_sun_power_h_co_polar_channel
- var_id: r_calib_sun_power_hc
- units: dBm
- long_name: calibrated_radar_sun_power_h_cross_polar_channel
- var_id: r_calib_sun_power_hx
- units: dBm
- long_name: calibrated_radar_sun_power_v_co_polar_channel
- var_id: r_calib_sun_power_vc
- units: dBm
- long_name: calibrated_radar_sun_power_v_cross_polar_channel
- var_id: r_calib_sun_power_vx
- units: degrees
- long_name: calibrated_radar_system_phidp
- var_id: r_calib_system_phidp
- units: dBm
- long_name: calibrated_radar_xmit_power_h_channel
- var_id: r_calib_xmit_power_h
- units: dBm
- long_name: calibrated_radar_xmit_power_v_channel
- var_id: r_calib_xmit_power_v
- units: dB
- long_name: calibrated_radar_zdr_correction
- var_id: r_calib_zdr_correction
- long_name: calibration_data_array_index_per_ray
- var_id: r_calib_index
- units:
- units: dB
- long_name: clutter_correction_ratio_from_horizontal_polarization
- var_id: CCOR
- units: dB
- long_name: clutter_correction_ratio_from_vertical_polarization
- var_id: CCORv
- long_name: co-polar_cross_correlation_coefficient
- var_id: RhoHV
- units:
- long_name: data_volume_end_time_utc
- var_id: time_coverage_end
- long_name: data_volume_index_number
- var_id: volume_number
- units:
- long_name: data_volume_start_time_utc
- var_id: time_coverage_start
- units: degrees
- var_id: uPhiDP
- long_name: differential_phase_shift_derived_by_signal_processor(GDRX)
- units: degrees
- long_name: differential_phase_shift_filtered_by_Rainbow
- var_id: PhiDP
- units: dB
- long_name: differential_reflectivity
- var_id: ZDR
- units: degrees
- var_id: elevation
- standard_name: ray_elevation_angle
- long_name: elevation_angle_from_horizontal_plane
- long_name: flag_for_indexed_rays
- var_id: rays_are_indexed
- long_name: follow_mode_for_scan_strategy
- var_id: follow_mode
- units: meters
- long_name: gate_spacing_for_ray
- var_id: ray_gate_spacing
- var_id: grid_mapping
- units: degrees
- long_name: half_power_radar_beam_width_h_channel
- var_id: radar_beam_width_h
- units: degrees
- long_name: half_power_radar_beam_width_v_channel
- var_id: radar_beam_width_v
- long_name: index_of_first_ray_in_sweep
- var_id: sweep_start_ray_index
- units:
- long_name: index_of_last_ray_in_sweep
- var_id: sweep_end_ray_index
- units:
- units: s-1
- long_name: intermediate_freqency_hz
- var_id: intermed_freq_hz
- units: degrees_north
- var_id: latitude
- long_name: latitude
- units: degrees_east
- var_id: longitude
- long_name: longitude
- units: dBm
- long_name: measured_radar_transmit_power_h_channel
- var_id: measured_transmit_power_h
- units: dBm
- long_name: measured_radar_transmit_power_v_channel
- var_id: measured_transmit_power_v
- units: dB
- long_name: nominal_radar_antenna_gain_h_channel
- var_id: radar_antenna_gain_h
- units: dB
- long_name: nominal_radar_antenna_gain_v_channel
- var_id: radar_antenna_gain_v
- long_name: number_of_samples_used_to_compute_moments
- var_id: n_samples
- units:
- long_name: platform_type
- var_id: platform_type
- long_name: polarization_mode_for_sweep
- var_id: polarization_mode
- long_name: primary_axis_of_rotation
- var_id: primary_axis
- units: seconds
- long_name: pulse_repetition_frequency_ratio
- var_id: prt_ratio
- units: seconds
- long_name: pulse_repetition_time
- var_id: prt
- units: dB
- long_name: r_calib_dynamic_range_db_hc
- var_id: r_calib_dynamic_range_db_hc
- units: dB
- long_name: r_calib_dynamic_range_db_hx
- var_id: r_calib_dynamic_range_db_hx
- units: dB
- long_name: r_calib_dynamic_range_db_vc
- var_id: r_calib_dynamic_range_db_vc
- units: dB
- long_name: r_calib_dynamic_range_db_vx
- var_id: r_calib_dynamic_range_db_vx
- units: dBm
- long_name: r_calib_i0_dbm_hc
- var_id: r_calib_i0_dbm_hc
- units: dBm
- long_name: r_calib_i0_dbm_hx
- var_id: r_calib_i0_dbm_hx
- units: dBm
- long_name: r_calib_i0_dbm_vc
- var_id: r_calib_i0_dbm_vc
- units: dBm
- long_name: r_calib_i0_dbm_vx
- var_id: r_calib_i0_dbm_vx
- long_name: r_calib_k_squared_water
- var_id: r_calib_k_squared_water
- units:
- units: dB
- long_name: radar_calibration_coupler_forward_loss_h_channel
- var_id: r_calib_coupler_forward_loss_h
- units: dB
- long_name: radar_calibration_coupler_forward_loss_v_channel
- var_id: r_calib_coupler_forward_loss_v
- units: dBm
- long_name: radar_calibration_noise_source_power_h_channel
- var_id: r_calib_noise_source_power_h
- units: dBm
- long_name: radar_calibration_noise_source_power_v_channel
- var_id: r_calib_noise_source_power_v
- units: dB
- long_name: radar_calibration_power_measurement_loss_h_channel
- var_id: r_calib_power_measure_loss_h
- units: dB
- long_name: radar_calibration_power_measurement_loss_v_channel
- var_id: r_calib_power_measure_loss_v
- units: seconds
- long_name: radar_calibration_pulse_width
- var_id: r_calib_pulse_width
- units: dB
- long_name: radar_calibration_receiver_mismatch_loss
- var_id: r_calib_receiver_mismatch_loss
- units: dBm
- long_name: radar_calibration_test_power_h_channel
- var_id: r_calib_test_power_h
- units: dBm
- long_name: radar_calibration_test_power_v_channel
- var_id: r_calib_test_power_v
- long_name: radar_calibration_time_utc
- var_id: r_calib_time
- units: UTC
- units: dB
- long_name: radar_calibration_two_way_radome_loss_h_channel
- var_id: r_calib_two_way_radome_loss_h
- units: dB
- long_name: radar_calibration_two_way_radome_loss_v_channel
- var_id: r_calib_two_way_radome_loss_v
- units: dB
- long_name: radar_calibration_two_way_waveguide_loss_h_channel
- var_id: r_calib_two_way_waveguide_loss_h
- units: dB
- long_name: radar_calibration_two_way_waveguide_loss_v_channel
- var_id: r_calib_two_way_waveguide_loss_v
- units: s-1
- long_name: radar_receiver_bandwidth
- var_id: radar_rx_bandwidth
- units: dBZ
- long_name: radar_reflectivity_at_1km_at_zero_snr_h_co_polar_channel
- var_id: r_calib_base_dbz_1km_hc
- units: dBZ
- long_name: radar_reflectivity_at_1km_at_zero_snr_h_cross_polar_channel
- var_id: r_calib_base_dbz_1km_hx
- units: dBZ
- long_name: radar_reflectivity_at_1km_at_zero_snr_v_co_polar_channel
- var_id: r_calib_base_dbz_1km_vc
- units: dBZ
- long_name: radar_reflectivity_at_1km_at_zero_snr_v_cross_polar_channel
- var_id: r_calib_base_dbz_1km_vx
- units: m s-1
- var_id: V
- long_name: radial_velocity_from_horizontal_polarization
- units: m s-1
- var_id: V1
- long_name: radial_velocity_from_horizontal_polarization_high_prf
- units: m s-1
- var_id: V2
- long_name: radial_velocity_from_horizontal_polarization_low_prf
- units: m s-1
- long_name: radial_velocity_from_vertical_polarization
- var_id: Vv
- units: m s-1
- var_id: V1v
- long_name: radial_velocity_from_vertical_polarization_high_prf
- units: m s-1
- var_id: V2v
- long_name: radial_velocity_from_vertical_polarization_low_prf
- var_id: range
- units: meters
- standard_name: projection_range_coordinate
- long_name: range_to_center_of_measurement_volume
- units: degrees
- long_name: ray_target_fixed_angle
- var_id: fixed_angle
- units: dBZ
- long_name: reflectivity_from_horizontal_polarization
- var_id: dBZ
- units: dBZ
- long_name: reflectivity_from_vertical_polarization
- var_id: dBZv
- long_name: scan_mode_for_sweep
- var_id: sweep_mode
- long_name: signal_quality_index_from_horizontal_polarization
- var_id: SQI
- units:
- var_id: SQIv
- long_name: signal_quality_index_from_vertical_polarization
- units:
- units: dB
- long_name: signal_to_noise_ratio_from_horizontal_polarization
- var_id: SNR
- units: dB
- var_id: SNR_ns
- long_name: signal_to_noise_ratio_from_horizontal_polarization_noise_corrected
- units: dB
- long_name: signal_to_noise_ratio_from_vertical_polarization
- var_id: SNRv
- units: dB
- var_id: SNRv_ns
- long_name: signal_to_noise_ratio_from_vertical_polarization_noise_corrected
- long_name: specific_differential_phase_shift_derived_by_Rainbow_from_PhiDP
- var_id: KDP
- units: degrees km-1
- long_name: specific_differential_phase_shift_derived_by_signal_processor(GDRX)
- var_id: uKDP
- units: degrees km-1
- units: m s-1
- var_id: W
- long_name: spectral_width_from_horizontal_polarization
- units: m s-1
- long_name: spectral_width_from_vertical_polarization
- var_id: Wv
- units: meters
- long_name: start_range_for_ray
- var_id: ray_start_range
- long_name: status_of_instrument
- var_id: status_xml
- long_name: sweep_index_number_0_based
- var_id: sweep_number
- units:
- long_name: target_scan_rate_for_sweep
- var_id: target_scan_rate
- units: degrees s-1
- units: s-1
- var_id: frequency
- long_name: transmission_frequency
- long_name: transmit_pulse_mode
- var_id: prt_mode
- units: seconds
- long_name: transmitter_pulse_width
- var_id: pulse_width
- long_name: type_of_instrument
- var_id: instrument_type
- units: m s-1
- long_name: unambiguous_doppler_velocity
- var_id: nyquist_velocity
- units: meters
- long_name: unambiguous_range
- var_id: unambiguous_range
- long_name: unfiltered_co-polar_cross_correlation_coefficient
- var_id: RhoHVu
- units:
- units: degrees
- long_name: unfiltered_differential_phase_shift_derived_by_signal_processor(GDRX)
- var_id: uPhiDPu
- units: dB
- long_name: unfiltered_differential_reflectivity
- var_id: ZDRu
- units: m s-1
- long_name: unfiltered_radial_velocity_from_horizontal_polarization
- var_id: Vu
- units: m s-1
- var_id: V1u
- long_name: unfiltered_radial_velocity_from_horizontal_polarization_high_prf
- units: m s-1
- var_id: V2u
- long_name: unfiltered_radial_velocity_from_horizontal_polarization_low_prf
- units: m s-1
- long_name: unfiltered_radial_velocity_from_vertical_polarization
- var_id: Vvu
- units: m s-1
- var_id: V1vu
- long_name: unfiltered_radial_velocity_from_vertical_polarization_high_prf
- units: m s-1
- var_id: V2vu
- long_name: unfiltered_radial_velocity_from_vertical_polarization_low_prf
- units: dBZ
- long_name: unfiltered_reflectivity_from_horizontal_polarization
- var_id: dBuZ
- units: dBZ
- long_name: unfiltered_reflectivity_from_vertical_polarization
- var_id: dBuZv
- long_name: unfiltered_signal_quality_index_from_horizontal_polarization
- var_id: SQIu
- units:
- long_name: unfiltered_signal_quality_index_from_vertical_polarization
- var_id: SQIvu
- units:
- units: dB
- long_name: unfiltered_signal_to_noise_ratio_from_horizontal_polarization
- var_id: SNRu
- units: dB
- var_id: SNRu_ns
- long_name: unfiltered_signal_to_noise_ratio_from_horizontal_polarization_noise_corrected
- units: dB
- long_name: unfiltered_signal_to_noise_ratio_from_vertical_polarization
- var_id: SNRvu
- units: dB
- var_id: SNRvu_ns
- long_name: unfiltered_signal_to_noise_ratio_from_vertical_polarization_noise_corrected
- long_name: unfiltered_specific_differential_phase_shift_derived_by_signal_processor(GDRX)
- var_id: uKDPu
- units: degrees km-1
- units: m s-1
- long_name: unfiltered_spectral_width_from_horizontal_polarization
- var_id: Wu
- units: m s-1
- long_name: unfiltered_spectral_width_from_vertical_polarization
- var_id: Wvu
Co-ordinate Variables
- standard_name: time
- var_id: time
- units: seconds
- long_name: time_in_seconds_since_volume_start
Coverage
Temporal Range
Start time:
2023-10-01T01:49:02
End time:
2025-03-06T09:19:58
Geographic Extent
50.2500° |
||
-2.8700° |
-0.0100° |
|
52.0400° |
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