Dataset
Chilbolton Facility for Atmospheric and Radio Research (CFARR) LI-COR LI-7500 Gas Analyser Data
Abstract
Measurements from a LI-COR LI-7500 open path gas analyser operating at infra-red wavelengths deployed at the Chilbolton Facility for Atmospheric and Radio Research site in Chilbolton, Hampshire. The instrument measures the absorption due to carbon dioxide at specific wavelengths along its 0.125m measurement path. Internally-stored calibration data are used to convert these absorption values to a mole concentration for each gas. Carbon dioxde and water vapour mole concentrations from this instrument are also provided with sonic anemomenter data at a 20Hz data acquisition rate for eddy covariance calculations in another CFARR dataset. Measurements are taken at 10s intervals and are archived at this temporal resolution. Data are in netCDF.
Details
| Previous Info: |
No news update for this record
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| Previously used record identifiers: |
http://badc.nerc.ac.uk/view/badc.nerc.ac.uk__ATOM__ACTIVITY_ab92d16e-35a8-11e3-b17c-00163e251233
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| 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 are collected by 4 radar systems, of which the largest is the 3 GHz Doppler radar (CAMRa), and 4 lidar systems, at Chilbolton Observatory, Hampshire. |
| Data Quality: |
Data are checked by CFARR staff prior to submission to BADC
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| File Format: |
Data are netCDF formatted
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Related Documents
Process overview
Instrument/Platform pairings
| Atmospheric and Radio Research (CFARR) LI-COR LI-7500 Gas Analyser | Deployed on: Chilbolton Atmospheric Observatory (CAO) |
| Output Description | None |
- var_id: carbon_dioxide_absorptance
- long_name: Absorptance of radiation due to carbon dioxide along 0.125m measurement path
- var_id: water_vapor_absorptance
- long_name: Absorptance of radiation due to water vapor along 0.125m measurement path
- var_id: licor_agc_code
- long_name: Code indicating transmission of instrument window.
- long_name: Range Of The First Cloud Base From The Lidar
- names: Range Of The First Cloud Base From The Lidar
- units: Pa
- standard_name: air_pressure
- var_id: air_pressure
- long_name: air pressure measured by sensor in LI-7500 gas analyser
- units: m
- standard_name: height
- var_id: height
- long_name: height of ground level above mean sea level (Ordnance Survey Great Britain)
- units: m
- standard_name: height
- var_id: height
- long_name: height of instrument above ground
- units: mol m-3
- var_id: raw_mole_concentration_of_water_vapor_in_air
- long_name: mole concentration of water vapor in air
- units: mol m-3
- var_id: raw_mole_concentration_of_carbon_dioxide_in_air
- long_name: raw mole concentration of carbon dioxide in air
- units: K
- var_id: instrument_temperature
- long_name: temperature measured inside instrument
Co-ordinate Variables
- units: degree_north
- standard_name: latitude
- var_id: latitude
- long_name: latitude
- units: degree_east
- standard_name: longitude
- var_id: longitude
- long_name: longitude
- standard_name: time
- var_id: time
Temporal Range
2008-01-01T00:00:00
Ongoing
Geographic Extent
51.1450° |
||
-1.4750° |
-1.4750° |
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51.1450° |