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Abstract
This paper reports atmospheric profiles of N2O retrieved from Metop/IASI with the Software for the Retrieval of IASI Data (SOFRID) for the 2008–2018 period and their validation with FTIR data from 12 stations of the Network for the Detection of Atmospheric Composition Changes (NDACC). SOFRID retrievals performed in the 2160–2218 cm−1 spectral window provide 3 independent pieces of information about the vertical profile of N2O. The FTIR versus SOFRID comparisons display a better agreement in the mid-troposphere (MT, 700–350 hPa) than in the lower (LT, Surface–700 hPa) and upper (UT, 350–110 hPa) troposphere with correlation coefficients (R) in the 0.49–0.83 range and comparable variabilities (3–5 ppbv). The agreement for oceanic and coastal stations (R > 0.77) is better than for continental ones (R < 0.72). The SOFRID MT N2O mixing ratios are significantly biased high (up to 16.8 ppbv) relative to FTIR at continental stations while the biases remain below 4.2 ppbv and mostly unsignificant when oceanic data are considered. The average MT decadal trends derived from SOFRID at the 8 NDACC stations with continuous observations during the 2008–2018 period (1.05 ± 0.1 ppbv·yr−1) is in good agreement with the corresponding FTIR trends (1.08 ± 0.1 ppbv·yr−1) and the NOAA-ESRL trends from surface in-situ measurements (0.95 ± 0.02 ppbv·yr−1). In the Northern Hemisphere where they are clearly detected, the N2O MT seasonal variations from SOFRID and FTIR are phased (summer minima) and have similar amplitudes. SOFRID also detects the UT summer maxima indicating independent MT and UT information. The global MT N2O oceanic distributions from SOFRID display low geographical variability and are mainly characterized by enhanced tropical mixing ratios relative to mid and high latitudes.
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Li XB, Wang DS, Lu QC, Peng ZR, Lu SJ, Li B, Li C. Three-dimensional investigation of ozone pollution in the lower troposphere using an unmanned aerial vehicle platform. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 224:107-116. [PMID: 28202268 DOI: 10.1016/j.envpol.2017.01.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 01/15/2017] [Accepted: 01/24/2017] [Indexed: 06/06/2023]
Abstract
Potential utilities of instrumented lightweight unmanned aerial vehicles (UAVs) to quickly characterize tropospheric ozone pollution and meteorological factors including air temperature and relative humidity at three-dimensional scales are highlighted in this study. Both vertical and horizontal variations of ozone within the 1000 m lower troposphere at a local area of 4 × 4 km2 are investigated during summer and autumn times. Results from field measurements show that the UAV platform has a sufficient reliability and precision in capturing spatiotemporal variations of ozone and meteorological factors. The results also reveal that ozone vertical variation is mainly linked to the vertical distribution patterns of air temperature and the horizontal transport of air masses from other regions. In addition, significant horizontal variations of ozone are also observed at different levels. Without major exhaust sources, ozone horizontal variation has a strong correlation with the vertical convection intensity of air masses within the lower troposphere. Higher air temperatures are usually related to lower ozone horizontal variations at the localized area, whereas underlying surface diversity has a week influence. Three-dimensional ozone maps are obtained using an interpolation method based on UAV collected samples, which are capable of clearly demonstrating the diurnal evolution processes of ozone within the 1000 m lower troposphere.
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Affiliation(s)
- Xiao-Bing Li
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dong-Sheng Wang
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Qing-Chang Lu
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Zhong-Ren Peng
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; China Institute for Urban Governance, Shanghai Jiao Tong University, Shanghai 200240, China; Department of Urban and Regional Planning, University of Florida, PO Box 115706, Gainesville, FL 32611-5706, USA.
| | - Si-Jia Lu
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bai Li
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Chao Li
- Center for Intelligent Transportation Systems and Unmanned Aerial Systems Applications Research, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Aires F, Aznay O, Prigent C, Paul M, Bernardo F. Synergistic multi-wavelength remote sensing versus a posteriori combination of retrieved products: Application for the retrieval of atmospheric profiles using MetOp-A. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011jd017188] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Heard IPC, Manning AJ, Haywood JM, Witham C, Redington A, Jones A, Clarisse L, Bourassa A. A comparison of atmospheric dispersion model predictions with observations of SO2
and sulphate aerosol from volcanic eruptions. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011jd016791] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Prata AJ, Gangale G, Clarisse L, Karagulian F. Ash and sulfur dioxide in the 2008 eruptions of Okmok and Kasatochi: Insights from high spectral resolution satellite measurements. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd013556] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Clarisse L, Shephard MW, Dentener F, Hurtmans D, Cady-Pereira K, Karagulian F, Van Damme M, Clerbaux C, Coheur PF. Satellite monitoring of ammonia: A case study of the San Joaquin Valley. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd013291] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Clarisse L, Hurtmans D, Prata AJ, Karagulian F, Clerbaux C, De Mazière M, Coheur PF. Retrieving radius, concentration, optical depth, and mass of different types of aerosols from high-resolution infrared nadir spectra. APPLIED OPTICS 2010; 49:3713-3722. [PMID: 20648137 DOI: 10.1364/ao.49.003713] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We present a sophisticated radiative transfer code for modeling outgoing IR radiation from planetary atmospheres and, conversely, for retrieving atmospheric properties from high-resolution nadir-observed spectra. The forward model is built around a doubling-adding routine and calculates, in a spherical refractive geometry, the outgoing radiation emitted by the Earth and the atmosphere containing one layer of aerosol. The inverse model uses an optimal estimation approach and can simultaneously retrieve atmospheric trace gases, aerosol effective radius, and concentration. It is different from existing codes, as most forward codes dealing with multiple scattering assume a plane-parallel atmosphere, and as for the retrieval, it does not rely on precalculated spectra, the use of microwindows, or two-step retrievals. The simultaneous retrieval on a broad spectral range exploits the full potential of current state-of-the-art hyperspectral IR sounders, such as AIRS and IASI, and should be particularly useful in studying major pollution events. We present five example retrievals of IASI spectra observed in the range from 800 to 1200 cm(-1) above dust, volcanic ash, sulfuric acid, ice particles, and biomass burning aerosols.
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Affiliation(s)
- Lieven Clarisse
- Spectroscopie de l'Atmosphère, Service de Chimie Quantique et Photophysique, Université Libre de Bruxelles (ULB), Brussels, Belgium.
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Karagulian F, Clarisse L, Clerbaux C, Prata AJ, Hurtmans D, Coheur PF. Detection of volcanic SO2, ash, and H2SO4using the Infrared Atmospheric Sounding Interferometer (IASI). ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009jd012786] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nassar R, Logan JA, Worden HM, Megretskaia IA, Bowman KW, Osterman GB, Thompson AM, Tarasick DW, Austin S, Claude H, Dubey MK, Hocking WK, Johnson BJ, Joseph E, Merrill J, Morris GA, Newchurch M, Oltmans SJ, Posny F, Schmidlin FJ, Vömel H, Whiteman DN, Witte JC. Validation of Tropospheric Emission Spectrometer (TES) nadir ozone profiles using ozonesonde measurements. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007jd008819] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Wespes C, Hurtmans D, Herbin H, Barret B, Turquety S, Hadji‐Lazaro J, Clerbaux C, Coheur P. First global distributions of nitric acid in the troposphere and the stratosphere derived from infrared satellite measurements. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd008202] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Catherine Wespes
- Spectroscopie de l’Atmosphère, Service de Chimie Quantique et Photophysique Université Libre de Bruxelles Brussels Belgium
| | - Daniel Hurtmans
- Spectroscopie de l’Atmosphère, Service de Chimie Quantique et Photophysique Université Libre de Bruxelles Brussels Belgium
| | - Hervé Herbin
- Spectroscopie de l’Atmosphère, Service de Chimie Quantique et Photophysique Université Libre de Bruxelles Brussels Belgium
| | - Brice Barret
- Spectroscopie de l’Atmosphère, Service de Chimie Quantique et Photophysique Université Libre de Bruxelles Brussels Belgium
- Now at Laboratoire d’Aérologie, UMR 5560 CNRS/Université Paul Sabatier, Observatoire de Midi‐Pyrénées, Toulouse, France
| | - Solène Turquety
- Service d’Aéronomie, Institut Pierre‐Simon Laplace Université Pierre et Marie Curie Paris France
| | - Juliette Hadji‐Lazaro
- Service d’Aéronomie, Institut Pierre‐Simon Laplace Université Pierre et Marie Curie Paris France
| | - Cathy Clerbaux
- Spectroscopie de l’Atmosphère, Service de Chimie Quantique et Photophysique Université Libre de Bruxelles Brussels Belgium
- Service d’Aéronomie, Institut Pierre‐Simon Laplace Université Pierre et Marie Curie Paris France
| | - Pierre‐François Coheur
- Spectroscopie de l’Atmosphère, Service de Chimie Quantique et Photophysique Université Libre de Bruxelles Brussels Belgium
- Research Associate with the F.N.R.S. Belgium
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Landgraf J, Hasekamp OP. Retrieval of tropospheric ozone: The synergistic use of thermal infrared emission and ultraviolet reflectivity measurements from space. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd008097] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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