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Dataset

 

Fennec automatic weather station (AWS) data from the Saharan Desert between 2011-2013

Update Frequency: Not Planned
Status: Completed
Online Status: ONLINE
Publication State: Published
Publication Date: 2017-05-23
Download Stats: last 12 months

Abstract

Data were collected under the NERC funded project - Fennec -The Saharan Climate System. The project was lead by the University of Oxford and involved the Universities of Leeds, Reading, Sussex and the UK Met Office. Fennec investigated the Saharan climate system and the role of dust aerosols, involving a unique surface and aircraft field campaign with the FAAM BAe-146.

Various meteorological variables were collected at 3 min 20 second intervals, between 2011 and 2013 at 8 Automatic Weather Stations. Parameters include: 1m pressure, 3 min 20 sec mean 2m windspeed (sonic and cup anemometers), number of windspeeds sampled, variance of windspeed in sample, skew of windspeed in sample, 2m relative humidity, 2 temperature, soil temperature (2 depths), ground flux, shortwave radiation up and down, longwave radiation up and down.

Specific station locations are stated both in the data files and the CEDA platform record. One station had to be moved after the first year, hence there are 9 station locations listed.

Due to harsh environmental conditions a number of the AWS stopped operating after deployment. Additional information regarding instrument issues and missing data can be found in a PDF on the CEDA archive.

Citable as:  Roberts, A. (2017): Fennec automatic weather station (AWS) data from the Saharan Desert between 2011-2013. Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/819bdb021a644a9fb0b31704479523db
Abbreviation: leeds-aws-f
Keywords: Fennec, Sahara, Desert, AWS, surface pressure, 2 m windspeed, 2 m relative humidity, 2 m temperature, soil temperature, ground flux, shortwave radiation, longwave radiation

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:

AWSs were designed and built at the University of Leeds and then deployed to 8 stations in the Sahara. Data were transmitted via satellite link to the University of Leeds where post-processing occurred. Data were then passed to CEDA for long term archival.

Data Quality:
Several instrument issues occurred during the campaign, see additional documentation.
File Format:
The data comprise 22 NetCDF data files and 1 .pdf file which provides additional information about instrument issues.

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
  • units: Pa
  • long_name: 1m pressure (sensor A)
  • var_id: pressureA
  • names: 1m pressure (sensor A)
  • units: Pa
  • long_name: 1m pressure (sensor B)
  • var_id: pressureB
  • names: 1m pressure (sensor B)
  • units: 1
  • long_name: 2m relative humidity (epluse sensor A)
  • var_id: epluseRHA
  • names: 2m relative humidity (epluse sensor A)
  • units: 1
  • long_name: 2m relative humidity (epluse sensor B)
  • var_id: epluseRHB
  • names: 2m relative humidity (epluse sensor B)
  • units: K
  • long_name: 2m temperature (epluse sensor A)
  • var_id: eplusetempA
  • names: 2m temperature (epluse sensor A)
  • units: K
  • long_name: 2m temperature (epluse sensor B)
  • var_id: eplusetempB
  • names: 2m temperature (epluse sensor B)
  • units: K
  • long_name: 2m temperature (thermistor A)
  • var_id: thermistorA
  • names: 2m temperature (thermistor A)
  • units: K
  • long_name: 2m temperature (thermistor B)
  • var_id: thermistorB
  • names: 2m temperature (thermistor B)
  • units: V
  • long_name: Battery voltage
  • var_id: vBatt
  • names: Battery voltage
  • units: W m-2
  • long_name: Ground flux
  • var_id: ground_flux
  • names: Ground flux
  • units: K
  • long_name: Ground temperature 1
  • var_id: ground_temp1
  • names: Ground temperature 1
  • units: K
  • long_name: Ground temperature 2
  • var_id: ground_temp2
  • names: Ground temperature 2
  • units: A
  • long_name: Hukseflux ground flux current
  • var_id: ground_flux_I
  • names: Hukseflux ground flux current
  • units: W m-2
  • long_name: Longwave downwelling
  • var_id: lw_down
  • names: Longwave downwelling
  • units: W m-2
  • long_name: Longwave upwelling
  • var_id: lw_up
  • names: Longwave upwelling
  • units: m s-1
  • long_name: Mean wind speed (cup anemometer)
  • var_id: cup_van_ws
  • names: Mean wind speed (cup anemometer)
  • units: m s-1
  • long_name: Mean wind speed (sonic anemometer)
  • var_id: sonic_ws
  • names: Mean wind speed (sonic anemometer)
  • long_name: Number of samples (cup anemometer)
  • var_id: cup_van_samples
  • names: Number of samples (cup anemometer)
  • long_name: Number of samples (sonic anemometer)
  • var_id: sonic_samples
  • names: Number of samples (sonic anemometer)
  • long_name: Shortwave Radiation
  • gcmd_url: http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0755
  • gcmd_keyword: Shortwave Radiation
  • names: Shortwave Radiation, http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0755
  • units: W m-2
  • long_name: Shortwave downwelling
  • var_id: sw_down
  • names: Shortwave downwelling
  • units: W m-2
  • long_name: Shortwave upwelling
  • var_id: sw_up
  • names: Shortwave upwelling
  • units: K
  • long_name: System temperature
  • var_id: sysTemp
  • names: System temperature
  • units: K
  • long_name: Temperature of radiometer
  • var_id: rad_temp
  • names: Temperature of radiometer
  • var_id: time
  • long_name: Time
  • names: Time
  • long_name: Wind speed skew (cup anemometer)
  • var_id: cup_van_skew
  • names: Wind speed skew (cup anemometer)
  • long_name: Wind speed skew (sonic anemometer)
  • var_id: sonic_skew
  • names: Wind speed skew (sonic anemometer)
  • units: m2 s-2
  • long_name: Wind speed variance (cup anemometer)
  • var_id: cup_van_var
  • names: Wind speed variance (cup anemometer)
  • units: m2 s-2
  • long_name: Wind speed variance (sonic anemometer)
  • var_id: sonic_var
  • names: Wind speed variance (sonic anemometer)

Co-ordinate Variables

  • units: degree_north
  • standard_name: latitude
  • var_id: lat
  • long_name: Latitude
  • names: latitude, Latitude
  • units: degree_east
  • standard_name: longitude
  • var_id: lon
  • long_name: Longitude
  • names: longitude, Longitude
Coverage
Temporal Range
Start time:
2011-05-23T23:00:00
End time:
2013-12-31T00:00:00
Geographic Extent

 
27.3700°
 
-11.5780°
 
5.5220°
 
21.3250°