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2 results on '"WSU Laboratory for Atmospheric Research"'

1. The Cabauw Intercomparison campaign for Nitrogen Dioxide measuring Instruments (CINDI) : design, execution, and early results

Author

A. Griesfeller, Roland Leigh, Cristen Adams, Bas Henzing, Mihalis Vrekoussis, Y. J. Kim, Mónica Navarro-Comas, M. Perez-Camacho, K. Großmann, Marcel M. Moerman, J. C. Hains, Enno Peters, Karin Kreher, Andrea Pazmino, Arnoud Apituley, D. P. J. Swart, H. Klein Baltink, Hitoshi Irie, Olga Puentedura, B. Schwarzenbach, Marc Allaart, C. Whyte, Yugo Kanaya, A. du Piesanie, M. Kroon, Dominik Brunner, Wesley Sluis, Hisahiro Takashima, R. Graves, François Hendrick, Anja Schönhardt, Steffen Beirle, Hilke Oetjen, Nader Abuhassan, G. R. van der Hoff, Gaia Pinardi, G. Hemerijckx, A. P. Stolk, J. B. Bergwerff, Manuel Gil-Ojeda, Keith M. Wilson, Yipin Zhou, Caroline Fayt, Paul Johnston, A. Cede, G. de Leeuw, Florence Goutail, K. Clémer, Andreas Richter, A.J.C. Berkhout, Elena Spinei, George H. Mount, Christian Hermans, M. Van Roozendael, Paul S. Monks, Thomas Wagner, Tim Vlemmix, Howard K. Roscoe, Kimberly Strong, Ankie Piters, L.F.L. Gast, M. Hoexum, K. F. Boersma, Jihyo Chong, M. Akrami, Jay R. Herman, Reza Shaiganfar, Folkard Wittrock, Alexis Merlaud, Udo Frieß, Paul Zieger, Margarita Yela, S. Yilmaz, Fluids and Flows, Royal Netherlands Meteorological Institute (KNMI), Eindhoven University of Technology [Eindhoven] (TU/e), Maryland Department of the Environment (MDE), Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Institute of Environmental Physics [Bremen] (IUP), University of Bremen, Morgan State University, Department of Physics [Toronto], University of Toronto, National Institute for Public Health and the Environment [Bilthoven] (RIVM), Max Planck Institute for Chemistry (MPIC), Max-Planck-Gesellschaft, Swiss Federal Laboratories for Materials Science and Technology [Dübendorf] (EMPA), University of Maryland [College Park], University of Maryland System, Gwangju Institute of Science and Technology (GIST), Institut für Umweltphysik [Heidelberg], Universität Heidelberg [Heidelberg], Instituto Nacional de Técnica Aeroespacial (INTA), STRATO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of Chemistry [Leicester], University of Leicester, Research Institute for Global Change (RIGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), National Institute of Water and Atmospheric Research [Lauder] (NIWA), University of Helsinki, The Netherlands Organisation for Applied Scientific Research (TNO), WSU Laboratory for Atmospheric Research, Washington State University (WSU), School of Chemistry [Leeds], University of Leeds, British Antarctic Survey (BAS), Natural Environment Research Council (NERC), Research Centre for Atmospheric Physics and Climatology [Athens], Academy of Athens, Laboratory of Atmospheric Chemistry [Paul Scherrer Institute] (LAC), Paul Scherrer Institute (PSI), Universität Heidelberg [Heidelberg] = Heidelberg University, and Helsingin yliopisto = Helsingfors universitet = University of Helsinki

Subjects
Atmospheric Science, 010504 meteorology & atmospheric sciences, Meteorology, Climate, Earth & Environment, Energy / Geological Survey Netherlands, Air pollution, 010501 environmental sciences, Environment, medicine.disease_cause, 01 natural sciences, Troposphere, Urban Development, medicine, lcsh:TA170-171, Built Environment, Air quality index, 0105 earth and related environmental sciences, Remote sensing, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, lcsh:TA715-787, [SDE.IE]Environmental Sciences/Environmental Engineering, lcsh:Earthwork. Foundations, CAS - Climate, Air and Sustainability, lcsh:Environmental engineering, Trace gas, AERONET, Aerosol, Lidar, 13. Climate action, UES - Urban Environment & Safety, Measuring instrument, Environmental science, EELS - Earth, Environmental and Life Sciences
Abstract

From June to July 2009 more than thirty different in-situ and remote sensing instruments from all over the world participated in the Cabauw Intercomparison campaign for Nitrogen Dioxide measuring Instruments (CINDI). The campaign took place at KNMI's Cabauw Experimental Site for Atmospheric Research (CESAR) in the Netherlands. Its main objectives were to determine the accuracy of state-of-the-art ground-based measurement techniques for the detection of atmospheric nitrogen dioxide (both in-situ and remote sensing), and to investigate their usability in satellite data validation. The expected outcomes are recommendations regarding the operation and calibration of such instruments, retrieval settings, and observation strategies for the use in ground-based networks for air quality monitoring and satellite data validation. Twenty-four optical spectrometers participated in the campaign, of which twenty-one had the capability to scan different elevation angles consecutively, the so-called Multi-axis DOAS systems, thereby collecting vertical profile information, in particular for nitrogen dioxide and aerosol. Various in-situ samplers and lidar instruments simultaneously characterized the variability of atmospheric trace gases and the physical properties of aerosol particles. A large data set of continuous measurements of these atmospheric constituents has been collected under various meteorological conditions and air pollution levels. Together with the permanent measurement capability at the CESAR site characterizing the meteorological state of the atmosphere, the CINDI campaign provided a comprehensive observational data set of atmospheric constituents in a highly polluted region of the world during summertime. First detailed comparisons performed with the CINDI data show that slant column measurements of NO2, O4 and HCHO with MAX-DOAS agree within 5 to 15%, vertical profiles of NO2 derived from several independent instruments agree within 25% of one another, and MAX-DOAS aerosol optical thickness agrees within 20–30% with AERONET data. For the in-situ NO2 instrument using a molybdenum converter, a bias was found as large as 5 ppbv during day time, when compared to the other in-situ instruments using photolytic converters.

Published
2012
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2. Validation of Ozone Monitoring Instrument nitrogen dioxide columns

Author

M. Van Roozendael, O. W. Ibrahim, E. J. Brinksma, Stanley P. Sander, D. V. Ionov, C.M. Chen, Anja Schönhardt, D. P. J. Swart, Pieternel F. Levelt, Florence Goutail, Andreas Richter, E. J. Bucsela, Jean-Christopher Lambert, Elena Spinei, Jean-Pierre Pommereau, Thomas Wagner, Edward A. Celarier, B. Bojkov, H. Volten, Folkard Wittrock, Mark Wenig, James F. Gleason, Thomas J. Pongetti, Gaia Pinardi, A. Cede, M. Kroon, J. P. Veefkind, George H. Mount, Jay R. Herman, Stinger Ghaffarian Technologies, Inc. (SGT, Inc.), Royal Netherlands Meteorological Institute (KNMI), NASA Goddard Space Flight Center (GSFC), University of Maryland [College Park], University of Maryland System, V.A. Fock Institute of Physics (NIF), St Petersburg State University (SPbU), Service d'aéronomie (SA), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Institute of Environmental Physics [Bremen] (IUP), University of Bremen, Institut für Umweltphysik [Heidelberg], Universität Heidelberg [Heidelberg] = Heidelberg University, Max Planck Institute for Chemistry (MPIC), Max-Planck-Gesellschaft, WSU Laboratory for Atmospheric Research, Washington State University (WSU), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), National Institute for Public Health and the Environment [Bilthoven] (RIVM), Universität Heidelberg [Heidelberg], and Fluids and Flows

Subjects
Atmospheric Science, Ozone, 010504 meteorology & atmospheric sciences, nitrogen dioxide, Soil Science, Field of view, 010501 environmental sciences, Aquatic Science, Oceanography, 01 natural sciences, Troposphere, chemistry.chemical_compound, Geochemistry and Petrology, Earth and Planetary Sciences (miscellaneous), Nitrogen dioxide, Stratosphere, 0105 earth and related environmental sciences, Earth-Surface Processes, Water Science and Technology, Remote sensing, Ozone Monitoring Instrument, validation, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Ecology, OMI, Paleontology, Forestry, Geophysics, chemistry, 13. Climate action, Space and Planetary Science, Environmental science, Satellite, Single point
Abstract

We review the standard nitrogen dioxide (NO2) data product (Version 1.0.), which is based on measurements made in the spectral region 415–465 nm by the Ozone Monitoring Instrument (OMI) on the NASA Earth Observing System-Aura satellite. A number of ground- and aircraft-based measurements have been used to validate the data product's three principal quantities: stratospheric, tropospheric, and total NO2 column densities under nearly or completely cloud-free conditions. The validation of OMI NO2 is complicated by a number of factors, the greatest of which is that the OMI observations effectively average the NO2 over its field of view (minimum 340 km2), while a ground-based instrument samples at a single point. The tropospheric NO2 field is often very inhomogeneous, varying significantly over tens to hundreds of meters, and ranges from 1016 cm−2 over urban and industrial areas. Because of OMI's areal averaging, when validation measurements are made near NO2 sources the OMI measurements are expected to underestimate the ground-based, and this is indeed seen. Further, we use several different instruments, both new and mature, which might give inconsistent NO2 amounts; the correlations between nearby instruments is 0.8–0.9. Finally, many of the validation data sets are quite small and span a very short length of time; this limits the statistical conclusions that can be drawn from them. Despite these factors, good agreement is generally seen between the OMI and ground-based measurements, with OMI stratospheric NO2 underestimated by about 14% and total and tropospheric columns underestimated by 15–30%. Typical correlations between OMI NO2 and ground-based measurements are generally >0.6.

Published
2008
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