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Dataset

 

Eyjafjallajokull Volcanic Ash Cloud: Leosphere and Halo Doppler Lidar images from the Chilbolton Observatory, Hampshire

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2014-09-19
Download Stats: last 12 months

Abstract

The Icelandic Volcano, Eyjafjallajokull, started erupting on 14th April 2010. The volcanic ash cloud produced covered much of Northern Europe for several weeks causing extensive disruption to air travel. The UK and European atmospheric communities had many instruments - both airborne and ground-based, remote sensing and in-situ - taking measurements of the ash cloud throughout this period. This dataset contains Leosphere and Halo Doppler Lidar images from the Chilbolton Observatory, Hampshire.

Citable as:  Chilbolton Facility for Atmospheric and Radio Research (2014): Eyjafjallajokull Volcanic Ash Cloud: Leosphere and Halo Doppler Lidar images from the Chilbolton Observatory, Hampshire. NCAS British Atmospheric Data Centre, date of citation. https://catalogue.ceda.ac.uk/uuid/234be8bf50ec46478f2720c2eaf14936
Abbreviation: Not defined
Keywords: Eyjafjallajokull, Lidar, Chilbolton

Details

Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
Use of these data is covered by the following licence: 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 collected from the Chilbolton Facility for Atmospheric and Radio Research (CFARR). A copy of these data were made available to the British Atmospheric Data Centre (BADC) to assist the academic community during this volcanic ash event.

Data Quality:
This is quick look unvetted data.
File Format:
Images are PNG formatted

Related Documents

No documents related to this record were found.

Process overview

This dataset was generated by instruments deployed on platforms as listed below.
Output Description None
  • long_name: 1st received wavelength of lidar (water vapour Raman scattering)
  • units: nm
  • var_id: receive_wavelength_1
  • names: 1st received wavelength of lidar (water vapour Raman scattering)
  • units: nm
  • long_name: 2nd received wavelength of lidar (nitrogen Raman scattering)
  • var_id: receive_wavelength_2
  • names: 2nd received wavelength of lidar (nitrogen Raman scattering)
  • long_name: Atmospheric Pressure Measurements
  • gcmd_url: http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0067
  • gcmd_keyword: Atmospheric Pressure Measurements
  • names: Atmospheric Pressure Measurements, http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0067
  • units: m
  • long_name: Diameter of receiver mirror of lidar
  • var_id: lidar_mirror_diameter
  • names: Diameter of receiver mirror of lidar
  • units: m
  • long_name: Diameter of transmitted laser beam at lidar system
  • var_id: lidar_beam_diameter
  • names: Diameter of transmitted laser beam at lidar system
  • long_name: Divergence of transmitted laser beam
  • var_id: lidar_beam_divergence
  • units: degree
  • names: Divergence of transmitted laser beam
  • units: degree
  • long_name: Elevation of lidar beam with respect to horizontal surface
  • var_id: lidar_beam_elevation
  • names: Elevation of lidar beam with respect to horizontal surface
  • long_name: Field of view of lidar receiver
  • var_id: lidar_field_of_view
  • units: degree
  • names: Field of view of lidar receiver
  • units: m
  • long_name: Height of lidar above mean sea level (Ordnance Survey Great Britain)
  • var_id: lidar_height_amsl
  • names: Height of lidar above mean sea level (Ordnance Survey Great Britain)
  • units: m
  • long_name: Height of measurement with respect to lidar system
  • standard_name: height
  • var_id: height
  • names: Height of measurement with respect to lidar system, height
  • long_name: Laser pulse repetition rate
  • var_id: lidar_pulse_frequency
  • units: Hz
  • names: Laser pulse repetition rate
  • units: m-1sr-1
  • long_name: Lidar backscattering coefficient attenuated by molecular and aerosol scattering
  • var_id: atten_lidar_backscatter_coeff
  • names: Lidar backscattering coefficient attenuated by molecular and aerosol scattering
  • long_name: Mass mixing ratio of water vapour
  • var_id: humidity_mixing_ratio
  • standard_name: humidity_mixing_ratio
  • names: humidity_mixing_ratio, Mass mixing ratio of water vapour
  • var_id: lidar_pulse_energy
  • units: J
  • long_name: Nominal laser pulse energy
  • names: Nominal laser pulse energy
  • long_name: Received wavelength of lidar (elastic backscatter)
  • units: nm
  • var_id: receive_wavelength_1
  • names: Received wavelength of lidar (elastic backscatter)
  • units: seconds
  • long_name: Total acquisition time for single profile
  • var_id: acquisition_time
  • names: Total acquisition time for single profile
  • long_name: Transmitted wavelength of lidar
  • var_id: transmit_wavelength
  • units: nm
  • names: Transmitted wavelength of lidar

Co-ordinate Variables

  • standard_name: latitude
  • units: degree_north
  • long_name: Latitude coordinate of the lidar
  • var_id: latitude
  • names: latitude, Latitude coordinate of the lidar
  • units: degree_east
  • standard_name: longitude
  • long_name: Longitude coordinate of the lidar
  • var_id: longitude
  • names: longitude, Longitude coordinate of the lidar
  • long_name: Time at end of acquisition period
  • standard_name: time
  • var_id: time
  • names: time, Time at end of acquisition period
  • long_name: Time at start of acquisition period
  • standard_name: time
  • var_id: time
  • names: time, Time at start of acquisition period
Coverage
Temporal Range
Start time:
2010-04-09T23:00:00
End time:
2010-08-29T23:00:00
Geographic Extent

 
51.1450°
 
-1.4270°
 
-1.4270°
 
51.1450°