World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Calibration of Sealed Hcl Cells Used for Tccon Instrumental Line Shape Monitoring : Volume 6, Issue 12 (16/12/2013)

By Hase, F.

Click here to view

Book Id: WPLBN0003999260
Format Type: PDF Article :
File Size: Pages 11
Reproduction Date: 2015

Title: Calibration of Sealed Hcl Cells Used for Tccon Instrumental Line Shape Monitoring : Volume 6, Issue 12 (16/12/2013)  
Author: Hase, F.
Volume: Vol. 6, Issue 12
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Toon, G. C., Schneider, M., Mazière, M. D., Sussmann, R., Roehl, C. M., Drouin, B. J.,...Desmet, F. (2013). Calibration of Sealed Hcl Cells Used for Tccon Instrumental Line Shape Monitoring : Volume 6, Issue 12 (16/12/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Karlsruhe Institute of Technology (KIT), Institute for Meteorology and Climate Research (IMK-ASF), Karlsruhe, Germany. The TCCON (Total Carbon Column Observing Network) FTIR (Fourier transform infrared) network provides highly accurate observations of greenhouse gas column-averaged dry-air mole fractions. As an important component of TCCON quality assurance, sealed cells filled with approximately 5 mbar of HCl are used for instrumental line shape (ILS) monitoring at all TCCON sites. Here, we introduce a calibration procedure for the HCl cells which employs a refillable, pressure-monitored reference cell filled with C2H2. Using this method, we identify variations of HCl purity between the TCCON cells as a non-negligible disturbance. The new calibration procedure introduced here assigns effective pressure values to each individual cell to account for additional broadening of the HCl lines. This approach will improve the consistency of the network by significantly reducing possible station-to-station biases due to inconsistent ILS results from different HCl cells. We demonstrate that the proposed method is accurate enough to turn the ILS uncertainty into an error source of secondary importance from the viewpoint of network consistency.

Summary
Calibration of sealed HCl cells used for TCCON instrumental line shape monitoring

Excerpt
Davis, S. P., Abrams, M. C., and Brault, J. W.: Fourier transform spectrometry, Academic Press, ISBN: 0-12-042510-6, 2001.; Dicke, R. H.: The effect of Collisions upon the Doppler width of spectral lines, Phys. Rev. 89, 472–473, 1953.; Dohe, S., Sherlock, V., Hase, F., Gisi, M., Robinson, J., Sepúlveda, E., Schneider, M., and Blumenstock, T.: A method to correct sampling ghosts in historic near-infrared Fourier transform spectrometer (FTS) measurements, Atmos. Meas. Tech., 6, 1981–1992, doi:10.5194/amt-6-1981-2013, 2013.; Griffith, D.: ILS sensitivity study by modulation-efficiency weighting of interferograms, Material presented on TCCON teleconference in January, 2010.; Hase, F.: Improved instrumental line shape monitoring for the ground-based, high-resolution FTIR spectrometers of the Network for the Detection of Atmospheric Composition Change, Atmos. Meas. Tech., 5, 603–610, doi:10.5194/amt-5-603-2012, 2012.; Hase, F. and Blumenstock, T.: Alignment procedure for Bruker IFS 120 spectrometers, NDSC Infrared Working Group Meeting, Bordeaux, 2001.; Hase, F., Blumenstock, T., and Paton-Walsh, C.: Analysis of the instrumental line shape of high-resolution Fourier transform IR spectrometers with gas cell measurements and new retrieval software, Appl. Optics, 38, 3417–3422, 1999.; Keppel-Aleks, G., Wennberg, P. O., and Schneider, T.: Sources of variations in total column carbon dioxide, Atmos. Chem. Phys., 11, 3581–3593, doi:10.5194/acp-11-3581-2011, 2011.; Kurylo, M. J.: Network for the detection of stratospheric change (NDSC), SPIE Proceedings 1991, P. Soc. Photo-Opt. Ins., 1491, 168–174, 1991.; Messerschmidt, J., Macatangay, R., Notholt, J., Petri, C., Warneke, T., and Weinzierl, C.: Side by side measurements of CO2 by ground-based Fourier transform spectrometry (FTS), Tellus B, 62, 749–758, doi:10.1111/j.1600-0889.2010.00491.x, 2010.; Miller, C. E., Crisp, D. , DeCola, P. L., Olsen, S. C., Randerson, J. T., Michalak, A. M., Alkhaled, A., Rayner, P., Jacob, D. J. Suntharalingam, P., Jones, D. B. A., Denning, A. S., Nicholls, M. E., Doney, S. C., Pawson, S., Boesch, H., Connor, B. J., Fung, I. Y., O'Brien, D., Salawitch, R. J., Sander, S. P., Sen, B., Tans, P., Toon, G. C., Wennberg, P. O., Wofsy, S. C., Yung, Y. L., and Law, R. M.: Precision requirements for space-based X-CO2 data, J. Geophys. Res.-Atmos., 112, D10314, doi:10.1029/2006JD007659, 2007.; Olsen, S. C. and Randerson, J. T.: Differences between surface and column atmospheric CO2 and implications for carbon cycle research, J. Geophys. Res.-Atmos., 109, D02301, doi:10.1029/2003JD003968, 2004.; Rothman, L. S., Gordon, I. E., Barbe, A., Benner, D. C., Bernath, P. F., Birk, M., Boudon, V., Brown, L. R., Campargue, A., Champion, J.-P., Chance, K., Coudert, L. H., Dana, V., Devi, V. M., Fally, S., Flaud, J.-M., Gamache, R. R., Goldman, A., Jacquemart, D., Kleiner, I., Lacome, N., Lafferty, W., Mandin, J.-Y., Massie, S. T., Mikhailenko, S. N., Miller, C. E., Moazzen-Ahmadi, N., Naumenko, O. V., Nikitin, A. V., Orphal, J., Perevalov, V. I., Perrin, A., Predoi-Cross, A., Rinsland, C. P., Rotger, M., Simeckova, M., Smith, M. A. H., Sung, K., Tashkun, S. A., Tennyson, J., Toth, R. A., Vandaele, A. C., and Vander Auwera, J.: The HITRAN 2008 molecular spectroscopic database, J. Quant. Spectrosc. Ra., 110, 533–572, 2009.; Washenfelder, R. A.: Column abundances of carbon dioxide and methane retrieved from ground-based near-infrared solar spectra, PhD thesis, California Institute of Technology, Pasadena, California (availabl

 

Click To View

Additional Books


  • Experimental Quantification of Contact F... (by )
  • Improved Cloud Mask Algorithm for Fy-3A/... (by )
  • Prediction of Tropical Cyclonegenesis Ov... (by )
  • A Model-based Approach to Adjust Microwa... (by )
  • Retrieval of Spectral Aerosol Optical Th... (by )
  • Mipas Reduced Spectral Resolution Utls-1... (by )
  • Inter-comparison of Laboratory Smog Cham... (by )
  • H2O and Δd Profiles Remotely-sensed from... (by )
  • Airborne Multiwavelength High Spectral R... (by )
  • The Added Value of a Visible Channel to ... (by )
  • Field Intercomparison of Two Optical Ana... (by )
  • Light Scattering at Small Angles by Atmo... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.