Journal cover Journal topic
Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.400 IF 3.400
  • IF 5-year value: 3.841 IF 5-year
    3.841
  • CiteScore value: 3.71 CiteScore
    3.71
  • SNIP value: 1.472 SNIP 1.472
  • IPP value: 3.57 IPP 3.57
  • SJR value: 1.770 SJR 1.770
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 70 Scimago H
    index 70
  • h5-index value: 49 h5-index 49
Discussion papers
https://doi.org/10.5194/amt-2016-177
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-2016-177
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Submitted as: research article 13 Jun 2016

Submitted as: research article | 13 Jun 2016

Review status
This discussion paper is a preprint. It has been under review for the journal Atmospheric Measurement Techniques (AMT). The revised manuscript was not accepted.

Atmospheric CO2 retrieval from ground based FTIR spectrometer over Shadnagar, India

Pathakoti Mahesh, Gaddamidi Sreenivas, Pamaraju Venkata Narasimha Rao, and Vinay Kumar Dadhwal Pathakoti Mahesh et al.
  • National Remote Sensing Center (NRSC), Indian Space Research Organization (ISRO), Hyderbad-500037

Abstract. The column-averaged volume mixing ratio (vmr) of carbon dioxide (XCO2) has been retrieved over Shadnagar (Latitude = 17.03° N, Longitude = 78.21° E), India at Near Infrared (NIR) spectra using ground based high resolution (∆ν = 0.01 cm−1) Fourier Transform InfraRed (FTIR; model IFS125M) spectrometer. It is first of its kind in India for measuring columnar and vertical mixing ratios of atmospheric trace gases and other greenhouse gases (GHGs). In the present study, retrieval of XCO2 could be performed for a week at near Sun's nadir view (solar zenith angle-SZA, ±75.0°) using line-by-line radiative transfer algorithm (LBLRTA). Vertical profiles of CO2 have been retrieved at NIR and middle IR (MIR) spectra using a version of the Fast Atmospheric Signature Code 3 (FASCODE3) model which is for the retrieval of atmospheric trace gas profiles. Error residuals between measured and fitted atmospheric transmission lie with in ±1.0 % for CO2 (6180–6380 cm−1) and O2 (7800–7940 cm−1) respectively. During analysis period mean (standard deviation, 1σ) XCO2 was observed to be 385.24 ppm (4.22 ppm) with 1.0 % of daily variation. Minimum and maximum averaged molecular column densities of CO2 (O2) are 6.15 × 1021 (3.3 × 1024) molecules/cm2 and 8.06 × 1021 (4.72 × 1024) molecules/cm2 respectively. Obtained an average high signal to noise ratio (SNR) of 833 and 625 for NIR and MIR spectra, respectively.

Pathakoti Mahesh et al.
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Interactive discussion
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Pathakoti Mahesh et al.
Pathakoti Mahesh et al.
Viewed  
Total article views: 810 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
504 255 51 810 30 52
  • HTML: 504
  • PDF: 255
  • XML: 51
  • Total: 810
  • BibTeX: 30
  • EndNote: 52
Views and downloads (calculated since 13 Jun 2016)
Cumulative views and downloads (calculated since 13 Jun 2016)
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 20 Nov 2019
Publications Copernicus
Download
Short summary
The present study reports Column averaged concentration of CO2 over Shadnagar using Sun's spectra measured by ground based FTIR spectrometer. It is first of its kind in India for measuring columnar and vertical mixing ratios of atmospheric trace gases and other greenhouse gases (GHGs). In the present study, we attempted to retrieve columnar concentration and vertical profile of CO2 by utilising line-by-line radiative transfer algorithm (LBLRTA) and FASCODE3 inversion model.
The present study reports Column averaged concentration of CO2 over Shadnagar using Sun's...
Citation