Preprints
https://doi.org/10.5194/angeo-2020-40
https://doi.org/10.5194/angeo-2020-40

  01 Jul 2020

01 Jul 2020

Review status: this preprint is currently under review for the journal ANGEO.

Validation of CAMS AOD using AERONET Data and Trend Analysis at Four Locations in the Indo-Gangetic Basin

Amit Misra1, Sachchida Tripathi1, Harjinder Sembhi2, and Hartmut Boesch2,3 Amit Misra et al.
  • 1Department of Civil Engineering, Indian Institute of Technology Kanpur, India
  • 2Earth Observation Science, Department of Physics and Astronomy, University of Leicester, UK
  • 3National Centre for Earth Observation, University of Leicester, UK

Abstract. In this work we have validated Copernicus Aerosol Monitoring Service (CAMS) derived aerosol optical depth (AOD) at four locations (Kanpur, Gandhi College, Jaipur and Lahore) in the Indo-Gangetic Basin and used it to study the aerosol climatology and trend in AOD at these locations. Lahore and Kanpur are urban and industrial sites with agricultural activity in the neighbouring regions. Gandhi College is in a rural agricultural area, whereas Jaipur is a desert dust source area. Aerosol climatology at the four sites are examined with MODIS-derived NDVI and ESA-CCI derived soil moisture data. CAMS-derived AOD for black carbon, sulphate, dust, sea salt and organic matter at the four sites are studied and discussed. It is observed that sulphate AOD has the largest influence on the total aerosol climatology. Contribution from dust and sea salt aerosols is observed only during pre-monsoon and monsoon seasons, whereas non-zero AOD is observed for organic matter, black carbon and sulphate aerosols throughout the year at all sites. Comparison of CAMS AOD with AERONET AOD shows better correlation when aerosol climatology is dominated by coarse particles as compared to when it is dominated by fine particles (e.g., at Kanpur, R2pre-monsoon = 0.63 and R2winter = 0.36). Trend analysis shows largest increase in organic matter (e.g., 0.305 ± 0.021 per year at Kanpur) and least in sea salt aerosols (e.g., 0.008 ± 0.001 per year at Kanpur).

Amit Misra et al.

 
Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Login for authors/topical editors] [Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement

Amit Misra et al.

Amit Misra et al.

Viewed

Total article views: 312 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
220 82 10 312 12 15
  • HTML: 220
  • PDF: 82
  • XML: 10
  • Total: 312
  • BibTeX: 12
  • EndNote: 15
Views and downloads (calculated since 01 Jul 2020)
Cumulative views and downloads (calculated since 01 Jul 2020)

Viewed (geographical distribution)

Total article views: 270 (including HTML, PDF, and XML) Thereof 270 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 

Cited

Latest update: 19 Apr 2021
Download
Short summary
In this work we validated Copernicus Aerosol Monitoring Service (CAMS) derived aerosol optical depth (AOD) at four sites in Indo-Gangetic Basin and used it to study aerosol climatology and trend in AOD at these sites. We find that sulphate AOD has largest influence on total aerosol climatology. Comparison of CAMS AOD with AERONET AOD shows better correlation when aerosol climatology is dominated by coarse particles. Trend analysis shows largest increase in organic matter and least in sea salt.