Journal article
Validation of the CrIS fast physical NH3 retrieval with ground-based FTIR
Atmospheric measurement techniques, v 10(7), pp 2645-2667
25 Jul 2017
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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 validate the satellite data products. The overall FTIR and CrIS total columns have a positive correlation of r = 0.77 (N = 218) with very little bias (a slope of 1.02). Binning the comparisons by total column amounts, for concentrations larger than 1.0 x 10(16) molecules cm(-2), i.e. ranging from moderate to polluted conditions, the relative difference is on average similar to 0-5% with a standard deviation of 25-50 %, which is comparable to the estimated retrieval uncertainties in both CrIS and the FTIR. For the smallest total column range (< 1.0x x 10(16) molecules cm(-2)) where there are a large number of observations at or near the CrIS noise level (detection limit) the absolute differences between CrIS and the FTIR total columns show a slight positive column bias. The CrIS and FTIR profile comparison differences are mostly within the range of the single-level retrieved profile values from estimated retrieval uncertainties, showing average differences in the range of similar to 20 to 40 %. The CrIS retrievals typically show good vertical sensitivity down into the boundary layer which typically peaks at similar to 850 hPa (similar to 1.5 km). At this level the median absolute difference is 0.87 (std = +/- 0.08) ppb, corresponding to a median relative difference of 39%(std = +/- 2 %). Most of the absolute and relative profile comparison differences are in the range of the estimated retrieval uncertainties. At the surface, where CrIS typically has lower sensitivity, it tends to overestimate in low-concentration conditions and underestimate in higher atmospheric concentration conditions.
Metrics
Details
- Title
- Validation of the CrIS fast physical NH3 retrieval with ground-based FTIR
- Creators
- Enrico Dammers - VU AmsterdamMark W. Shephard - Environment and Climate Change CanadaMathias Palm - University of BremenKaren Cady-Pereira - Atmospheric and Environmental ResearchShannon Capps - University of Colorado BoulderErik Lutsch - University of TorontoKim Strong - Univ Toronto, Dept Phys, Toronto, ON, CanadaJames W. Hannigan - National Center for Atmospheric ResearchIvan Ortega - National Center for Atmospheric ResearchGeoffrey C. Toon - Jet Propulsion LabWolfgang Stremme - National Autonomous University of MexicoMichel Grutter - National Autonomous University of MexicoNicholas Jones - University of WollongongDan Smale - National Institute of Water and Atmospheric ResearchJacob Siemons - Environment and Climate Change CanadaKevin Hrpcek - University of Wisconsin–MadisonDenis Tremblay - Science Data Processing, Inc., Laurel, MD, USAMartijn Schaap - TNO Built Environm & Geosci, Dept Air Qual & Climate, Utrecht, NetherlandsJustus Notholt - University of BremenJan Willem Erisman - VU Amsterdam
- Publication Details
- Atmospheric measurement techniques, v 10(7), pp 2645-2667
- Publisher
- Copernicus Gesellschaft Mbh
- Number of pages
- 23
- Grant note
- PREA CAFTON - Canadian Space Agency's FAST programme CFCAS University of Toronto NSERC; Natural Sciences and Engineering Research Council of Canada (NSERC) IN107417; IN112216 / UNAM-DGAPA; Universidad Nacional Autonoma de Mexico EC; European Commission; European Commission Joint Research Centre CFI; Canada Foundation for Innovation CSA ORDCF GO/12-36 / Netherlands Organisation for Scientific Research (NWO); Netherlands Organization for Scientific Research (NWO) NNG15HZ38C / University of Wisconsin-Madison Space Science and Engineering Center Atmosphere SIPS team under NASA NNH15CM65C / AER through a NASA; National Aeronautics & Space Administration (NASA) NASA; National Aeronautics & Space Administration (NASA) ABB Bomem
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000406247700002
- Scopus ID
- 2-s2.0-85026324044
- Other Identifier
- 991019167948504721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Industry collaboration
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Meteorology & Atmospheric Sciences