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Dammers, E. (author), Schaap, M. (author), Haaima, M. (author), Palm, M. (author), Wichink Kruit, R.J. (author), Volten, H. (author), Hansen, A. (author), Swart, D. (author), Erisman, J.W. (author)Ammonia (NH3) is difficult to monitor at atmospheric concentrations due its high solubility and reac-tivity and the strong spatial and temporal variations of its concentrations. Monitoring is mostly per-formed using passive samplers or filter packs with daily coverage at best. Only at a few sites ammonia is measured with more expensive wet...article 2017
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Dammers, E. (author), Shephard, M.W. (author), Palm, M. (author), Cady-Pereira, K. (author), Capps, S. (author), Lutsch, E. (author), Strong, K. (author), Hannigan, J.W. (author), Ortega, I. (author), Toon, G.C. (author), Stremme, W. (author), Grutter, M. (author), Jones, N. (author), Smale, D. (author), Siemons, J. (author), Hrpcek, K. (author), Tremblay, D. (author), Schaap, M. (author), Notholt, J. (author), Willem Erisman, J. (author)Presented here is the validation of the CrIS (Cross-track Infrared Sounder) fast physical NH3 retrieval (CFPR) column and profile measurements using ground-based Fourier transform infrared (FTIR) observations. We use the total columns and profiles from seven FTIR sites in the Network for the Detection of Atmospheric Composition Change (NDACC) to...article 2017
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Dammers, E. (author), Palm, M. (author), van Damme, M. (author), Vigouroux, C. (author), Smale, D. (author), Conway, S. (author), Toon, G.C. (author), Jones, N. (author), Nussbaumer, E. (author), Warneke, T. (author), Petri, C. (author), Clarisse, L. (author), Clerbaux, C. (author), Hermans, C. (author), Lutsch, E. (author), Strong, K. (author), Hannigan, J.W. (author), Nakajima, H. (author), Morino, I. (author), Herrera, B. (author), Stremme, W. (author), Grutter, M. (author), Schaap, M. (author), Kruit, R.J.W. (author), Notholt, J. (author), Coheur, P.F. (author), Erisman, J.W. (author)Global distributions of atmospheric ammonia (NH3) measured with satellite instruments such as the Infrared Atmospheric Sounding Interferometer (IASI) contain valuable information on NH3 concentrations and variability in regions not yet covered by ground-based instruments. Due to their large spatial coverage and (bi-)daily overpasses, the...article 2016
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Dammers, E. (author), Vigouroux, C. (author), Palm, M. (author), Mahieu, E. (author), Warneke, T. (author), Smale, D. (author), Langerock, B. (author), Franco, B. (author), van Damme, M. (author), Schaap, M. (author), Notholt, J. (author), Erisman, J.W. (author)We present a retrieval method for ammonia (NH3) total columns from ground-based Fourier transform infrared (FTIR) observations. Observations from Bremen (53.10° N, 8.85° E), Lauder (45.04° S, 169.68° E), Reúnion (20.9° S, 55.50° E) and Jungfraujoch (46.55° N, 7.98° E) were used to illustrate the capabilities of the method. NH3 mean total columns...article 2015