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Submit DataData ReportingCommentsCategoryAerosolIntegrating Nephelometer Datastandard-method    November 11, 2019
 
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Standard method

Description

The standard method refers to one of the standard operating procedures (SOPs) for nephelometers recognised by the GAW Scientific Advisory Group for aerosol. Please use one of the keywords for recognised SOPs listed below only if your observations are in fact conducted following this SOP. If not, you may and should still report your observations, and fill in this field with "None".

  • cal-gas=CO2+AIR_truncation-correction=none
    • The instrument is calibrated regularly with carbon dioxide as span gas and particle free air as zero gas as described by Anderson et al. (1996). The instrument inherent angular truncation in the forward and backward direction is not corrected. 
  • cal-gas=CO2+AIR_truncation-correction=Anderson1998
    • This method applies to the TSI 3563 nephelometer. The instrument is calibrated regularly with carbon dioxide as span gas and particle free air as zero gas as described by Anderson et al. (1996). The instrument inherent angular truncation in the forward and backward direction is corrected following Anderson and Ogren (1998). If you are using the same general concept for truncation correction as <a href=" http://dx.doi.org/10.1080/02786829808965551" target="_blank">Anderson and Ogren (1998), but different coefficients than indicated there, please use "Comment" field to specify the details. 
  • cal-gas=CO2+AIR_truncation-correction=Müller2011
    • This method applies to the ECOTECH Aurora 3000 nephelometer. The instrument is calibrated regularly with carbon dioxide as span gas and particle free air as zero gas. The instrument inherent angular truncation in the forward and backward direction is corrected following Müller et al. (2011)
  • cal-gas=FM-200+AIR_truncation-correction=none
    • The instrument is calibrated regularly with the hydrofluorocarbon FM-200 as span gas, and particle free air as zero gas. The instrument inherent angular truncation in the forward and backward direction is not corrected. 
  • cal-gas=HFC-134a+AIR_truncation-correction=none+SOP=IMPROVE_nephelometer_2004
  • None
    • None of the above standard operating procedures is used. Please use the "Comment" field to specify the details. 
Syntax:

Standard method:              <standard method tag>

Example:

Standard method:              cal-gas=CO2+AIR_truncation-correction=Anderson1998




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