2014
DOI: 10.1002/2014jd021911
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Abstract: The spatial comparison reveals a good overall agreement of the NH 3 distributions not only in these source regions but also over remote areas and over sea when transport is observed. On average, the measured columns exceed the modeled ones, except for a few cases. Large discrepancies over several industrial areas in Eastern Europe and Russia point to underestimated emissions in the underlying inventories. The temporal analysis over the three hot spot areas reveals that the seasonality is well captured by the m… Show more

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Cited by 74 publications
(81 citation statements)
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“…The CrIS-FRP-NH 3 science grade (non-operational) data products used in this study can be made available on request (M. W. Shephard, Environment and Climate Change Canada, Toronto, Ontario, Canada). The IASI-NH 3 product is freely available at http://www.pole-ether.fr/etherTypo/ index.php?id=1700&L=1 (Van Damme et al, 2015a Figure A1. Correlation between the FTIR and the IASI-LUT (a, blue) and IASI-NN (b, red) total columns using the coincident data from all measurement sites.…”
Section: Discussionmentioning
confidence: 99%
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“…The CrIS-FRP-NH 3 science grade (non-operational) data products used in this study can be made available on request (M. W. Shephard, Environment and Climate Change Canada, Toronto, Ontario, Canada). The IASI-NH 3 product is freely available at http://www.pole-ether.fr/etherTypo/ index.php?id=1700&L=1 (Van Damme et al, 2015a Figure A1. Correlation between the FTIR and the IASI-LUT (a, blue) and IASI-NN (b, red) total columns using the coincident data from all measurement sites.…”
Section: Discussionmentioning
confidence: 99%
“…Recent studies show the global distribution of NH 3 measured at a twice daily scale (Van Damme et al, 2014a, 2015a can reveal seasonal cycles and distributions for regions where measurements were unavailable until now. Comparisons of these observations to surface observations and model simulations show underestimations of the modelled NH 3 concentration levels, pointing to underestimated regional and national emissions Shephard et al, 2011;Heald et al, 2012;Nowak et al, 2012;Zhu et al, 2013;Van Damme et al, 2014b;Lonsdale et al, 2017;Schiferl et al, 2014Schiferl et al, , 2016. However, the overall quality of the satellite observations is still highly uncertain due to a lack of validation.…”
Section: Introductionmentioning
confidence: 99%
“…Recent advances in open-path remote sensing techniques, like (mini-)differential optical absorption spectroscopy (DOAS) systems and open-path quantum cascade laser (QCL) instruments, show great potential in overcoming part of these sampling issues (Volten et al, 2012;Miller et al, 2014), but are still in the development stage and not widely applied yet. Another aspect is the lack of vertical information, as most instruments only measure surface concentrations (Erisman et al, 2007(Erisman et al, , 2008Van Damme et al, 2015a). Some recent airborne measurements have been made (Nowak et al, 2007(Nowak et al, , 2010Leen et al, 2013), but only during dedicated campaigns with limited temporal and spatial coverage.…”
Section: E Dammers Et Al: Retrieval Of Ammonia From Ground-based Ftmentioning
confidence: 99%
“…Remote sensing products from atmospheric satellite sounders such as the Infrared Atmospheric Sounding Interferometer (IASI), the Tropospheric Emission Spectrometer (TES) and the Cross-track Infrared Sounder (CrIS) (Van Damme et al, 2014a;Shephard et al, 2011 have become available and show good promise to improve NH 3 concentration monitoring (Van Damme et al 2014b;Luo et al, 2015;Whitburn et al, 2015). However, these data sets are constrained by the overpass time of the satellite and the atmospheric conditions (cloud coverage, thermal contrast, etc.).…”
Section: E Dammers Et Al: Retrieval Of Ammonia From Ground-based Ftmentioning
confidence: 99%
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