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Goparaju L, Pillutla RCP, Venkata SBK. Assessment of forest fire emissions in Uttarakhand State, India, using Open Geospatial data and Google Earth Engine. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:100873-100891. [PMID: 37642912 DOI: 10.1007/s11356-023-29311-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 08/08/2023] [Indexed: 08/31/2023]
Abstract
In the recent past, forest fires have increased due to the changing climate pattern. It is necessary to analyse and quantify various gaseous emissions so as to mitigate their harmful effects on air pollution. Satellite remote sensing data provides an opportunity to study the greenhouse gases in the atmosphere. The multispectral sensor of the Tropospheric Monitoring Instrument (Sentinel-5) is capable of recording the reflectance of wavelengths vital for measuring the atmospheric concentrations of methane, formaldehyde, aerosol, carbon monoxide, etc., at a spatial resolution of 0.01°. The present study utilized the Google Earth Engine (GEE) platform to study the emissions caused by forest fires in four districts of Uttarakhand State of India, which witnessed unprecedented fires in April-May 2021. All the datasets were ingested in GEE, which has the capability to analyse large datasets without the need to download them. The pre-fire period chosen was September 2020; the fire period was February-May 2021, and the post-fire period was June 2021. The variables chosen were aerosol absorbing index (AAI), carbon monoxide (CO) and nitrogen dioxide (NO2). The climate parameter temperature (Moderate Resolution Imaging Spectroradiometer Land Surface Temperature) and precipitation (from Climate Hazards Group InfraRed Precipitation (CHIRPS) Pentad) were also studied for the period mentioned. The results indicate a different trend for emissions in each district. For AAI, maximum emissions were noted in district Nainital followed by Almora, Tehri Garhwal and Garhwal. For CO emissions, the most affected district was Almora followed by Nainital, Garhwal and Tehri Garhwal. For NO2 emissions, the most affected district was Garhwal, followed by Nainital, Tehri Garhwal and Almora. Delta Normalized Burn Ratio was computed from Sentinel data (difference of pre-fire and post-fire images) to assess the burnt area severity. The Delta Normalized Burn Ratio values observed that the district with the most burnt area is Garhwal, followed by Nainital, Almora and Tehri Garhwal. The elevated temperatures and scanty rainfall patterns regulated the intensity and duration of forest fire. Monitoring the gaseous emissions as a consequence of forest fire in the GEE platform is much easier and more convenient at a regional level. Such data is much needed for mitigation measures to be implemented in time.
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Affiliation(s)
- Laxmi Goparaju
- Vindhyan Ecology and Natural History Foundation, 36/30, Shivpuri Colony, Station Road, Mirzapur-231001, Uttar Pradesh, India.
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Srivastava N, Kumar M. Comprehensive study of aerosols properties over various terrain types. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:924. [PMID: 36260142 DOI: 10.1007/s10661-022-10536-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 06/20/2022] [Indexed: 06/16/2023]
Abstract
Aerosols are a crucial part of the climate system. Numerous factors, including aerosols, govern Earth's radiation balance. Different aerosols have distinct radiational effects on the earth system, and thus the slight change in their composition may lead to a drastic change in their radiative effects. Aerosols' chemical and physical properties also depend on generation processes, generation source, and geographical location. Significant spatio-temporal inconsistency is noticed in the distribution of aerosols. It makes it much difficult task to assess their radiative properties. We attempted to explore aerosol's optical properties and wavelength dependence over different locations. We have used AERONET (Aerosol Robotic Network) data over various stations (Kanpur, Jaipur, Gandhi College, Pune) with varying terrain properties in the Indian continent. We have studied the variation of different optical parameters: aerosol optical depth (AOD), single scattering albedo (SSA), and Angstrom exponent (α), and their wavelength dependence. This study indicated that Jaipur is the cleanest site, with dust aerosols as a primary aerosol. Though over Pune also aerosol concentration was relatively low but the anthropogenic aerosols contributed primarily over this site. Over the Indo-Gangetic Plain (IGP) sites, dust aerosols dominated the pre-monsoon season, while anthropogenic aerosols dominated the post-monsoon and winter seasons. The scatter plot of AOD with α gives the details of different aerosols (desert dust, continental aerosols, mixed aerosol, biomass burning aerosols, and sulfate aerosols) in the different seasons and places. This study provides an overview of aerosol properties, dominant aerosols in the aerosol system, and their seasonal and spectral variation.
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Affiliation(s)
- Nishi Srivastava
- Department of Physics, Birla Institute of Technology, Mesra, Ranchi, 835215, India.
| | - Mousam Kumar
- Department of Physics, Birla Institute of Technology, Mesra, Ranchi, 835215, India
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Spectral Derivatives of Optical Depth for Partitioning Aerosol Type and Loading. REMOTE SENSING 2021. [DOI: 10.3390/rs13081544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Quantifying aerosol compositions (e.g., type, loading) from remotely sensed measurements by spaceborne, suborbital and ground-based platforms is a challenging task. In this study, the first and second-order spectral derivatives of aerosol optical depth (AOD) with respect to wavelength are explored to determine the partitions of the major components of aerosols based on the spectral dependence of their particle optical size and complex refractive index. With theoretical simulations from the Second Simulation of a Satellite Signal in the Solar Spectrum (6S) model, AOD spectral derivatives are characterized for collective models of aerosol types, such as mineral dust (DS) particles, biomass-burning (BB) aerosols and anthropogenic pollutants (AP), as well as stretching out to the mixtures among them. Based on the intrinsic values from normalized spectral derivatives, referenced as the Normalized Derivative Aerosol Index (NDAI), a unique pattern is clearly exhibited for bounding the major aerosol components; in turn, fractions of the total AOD (fAOD) for major aerosol components can be extracted. The subtlety of this NDAI method is examined by using measurements of typical aerosol cases identified carefully by the ground-based Aerosol Robotic Network (AERONET) sun–sky spectroradiometer. The results may be highly practicable for quantifying fAOD among mixed-type aerosols by means of the normalized AOD spectral derivatives.
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Abstract
We analyzed a June 2018 Nanjing, China haze event using ground-based and spaceborne sensors, combined with sounding and HYSPLIT backward trajectory data, with the ground-based and spaceborne sensor data exhibiting good consistency. Water vapor content showed significant positive correlation with AOD (aerosol optical depth), and AOD measured in urban and industrial areas was much higher compared to other similar zones. The afternoon convection caused the aerosol uplift during the haze event. Higher aerosol concentration was detected below 2 km. Due to the summer afternoon convective movement, pollutants at high altitude were dominated by small particles, while the overall pollutant mix was dominated by mixed aerosols. During a stable period over June 11–18, a single, near-surface inversion layer, and occasional two inversion layers, stopped pollutant dispersal, with only very stable ocean air mass transport in the southeast direction available. The Air Quality Index drop which took place during June 28–30 was caused by two inversion layers, combined with the immigration of pollutants from inland air masses.
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Gómez-Amo JL, Estellés V, Marcos C, Segura S, Esteve AR, Pedrós R, Utrillas MP, Martínez-Lozano JA. Impact of dust and smoke mixing on column-integrated aerosol properties from observations during a severe wildfire episode over Valencia (Spain). THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 599-600:2121-2134. [PMID: 28575928 DOI: 10.1016/j.scitotenv.2017.05.041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/02/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
The most destructive wildfire experienced in Spain since 2004 occurred close to Valencia in summer 2012. A total of 48.500ha were affected by two wildfires, which were mostly active during 29-30 June. The fresh smoke plume was detected at the Burjassot measurement station simultaneously to a severe dust episode. We propose an empirical method to evaluate the dust and smoke mixing and its impact on the microphysical and optical properties. For this, we combine direct-sun measurements with a Cimel CE-318 sun-photometer with an inversion methodology, and the Mie theory to derive the column-integrated size distribution, single scattering albedo (SSA) and asymmetry parameter (g). The mixing of dust and smoke greatly increased the aerosol load and modified the background aerosol properties. Mineral dust increased the aerosol optical depth (AOD) up to 1, while the smoke plume caused an extreme AOD peak of 8. The size distribution of the mixture was bimodal, with a fine and coarse modes dominated by the smoke particles and mineral dust, respectively. The SSA and g for the dust-smoke mixture show a marked sensitivity on the smoke mixing-ratio, mainly at longer wavelengths. Mineral dust and smoke share a similar SSA at 440nm (~0.90), but with opposite spectral dependency. A small dust contribution to the total AOD substantially affects the SSA of the mixture, and also SSA at 1020nm increases from 0.87 to 0.95. This leads to a different spectral behaviour of SSA that changes from positive (smoke plume) to negative (dust), depending on the dust and smoke mixing-ratio.
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Affiliation(s)
- J L Gómez-Amo
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain.
| | - V Estellés
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain
| | - C Marcos
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain
| | - S Segura
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain
| | - A R Esteve
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain; Departament de Didàctica de les Ciences Experimentals i Socials, Universitat de València, Valencia, Spain
| | - R Pedrós
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain
| | - M P Utrillas
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain
| | - J A Martínez-Lozano
- Departament de Física de la Terra i Termodinàmica, Universitat de València, Burjassot, Spain
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Merging MODIS and Ground-Based Fine Mode Fraction of Aerosols Based on the Geostatistical Data Fusion Method. ATMOSPHERE 2017. [DOI: 10.3390/atmos8070117] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Radney JG, You R, Zachariah MR, Zangmeister CD. Direct In Situ Mass Specific Absorption Spectra of Biomass Burning Particles Generated from Smoldering Hard and Softwoods. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5622-5629. [PMID: 28453259 PMCID: PMC8447489 DOI: 10.1021/acs.est.7b00810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Particles from smoldering biomass burning (BB) represent a major source of carbonaceous aerosol in the terrestrial atmosphere. In this study, mass specific absorption spectra of laboratory-generated smoldering wood particles (SWP) from 3 hardwood and 3 softwood species were measured in situ. Absorption data spanning from λ = 500 to 840 nm were collected using a photoacoustic spectrometer coupled to a supercontinuum laser with a tunable wavelength and bandwidth filter. SWP were size- (electrical mobility) and mass-selected prior to optical characterization allowing data to be reported as mass-specific absorption cross sections (MAC). The median measured MAC at λ = 660 nm for smoldering oak particles was 1.1 (0.57/1.8) × 10-2 m2 g-1 spanning from 83 femtograms (fg) to 517 fg (500 nm ≤ mobility diameter ≤950 nm), MAC values in parentheses are the 16th and 84th percentiles of the measured data (i.e., 1σ). The collection of all six wood species (Oak, Hickory, Mesquite, Western redcedar, Baldcypress, and Blue spruce) had median MAC values ranging from 1.4 × 10-2 m2 g-1 to 7.9 × 10-2 m2 g-1 at λ = 550 nm with absorption Ångström exponents (AAE) between 3.5 and 6.2. Oak, Western redcedar, and Blue spruce possessed statistically similar (p > 0.05) spectra while the spectra of Hickory, Mesquite, and Baldcypress were distinct (p < 0.01) as calculated from a point-by-point analysis using the Wilcox rank-sum test.
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Affiliation(s)
- James G. Radney
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
| | - Rian You
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Michael R. Zachariah
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Christopher D. Zangmeister
- Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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Aerosol Optical Properties of a Haze Episode in Wuhan Based on Ground-Based and Satellite Observations. ATMOSPHERE 2014. [DOI: 10.3390/atmos5040699] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Forest fire smoke layers observed in the free troposphere over Portugal with a multiwavelength Raman lidar: optical and microphysical properties. ScientificWorldJournal 2014; 2014:421838. [PMID: 25114964 PMCID: PMC4119739 DOI: 10.1155/2014/421838] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 06/19/2014] [Indexed: 12/02/2022] Open
Abstract
Vertically resolved optical and microphysical properties of biomass burning aerosols, measured in 2011 with a multiwavelength Raman lidar, are presented. The transportation time, within 1-2 days (or less), pointed towards the presence of relatively fresh smoke particles over the site. Some strong layers aloft were observed with particle backscatter and extinction coefficients (at 355 nm) greater than 5 Mm−1 sr−1 and close to 300 Mm−1, respectively. The particle intensive optical properties showed features different from the ones reported for aged smoke, but rather consistent with fresh smoke. The Ångström exponents were generally high, mainly above 1.4, indicating a dominating accumulation mode. Weak depolarization values, as shown by the small depolarization ratio of 5% or lower, were measured. Furthermore, the lidar ratio presented no clear wavelength dependency. The inversion of the lidar signals provided a set of microphysical properties including particle effective radius below 0.2 μm, which is less than values previously observed for aged smoke particles. Real and imaginary parts of refractive index of about 1.5-1.6 and 0.02i, respectively, were derived. The single scattering albedo was in the range between 0.85 and 0.93; these last two quantities indicate the nonnegligible absorbing characteristics of the observed particles.
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Baars H, Ansmann A, Althausen D, Engelmann R, Heese B, Müller D, Artaxo P, Paixao M, Pauliquevis T, Souza R. Aerosol profiling with lidar in the Amazon Basin during the wet and dry season. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2012jd018338] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miller DJ, Sun K, Zondlo MA, Kanter D, Dubovik O, Welton EJ, Winker DM, Ginoux P. Assessing boreal forest fire smoke aerosol impacts on U.S. air quality: A case study using multiple data sets. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd016170] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- David J. Miller
- Department of Civil and Environmental Engineering; Princeton University; Princeton New Jersey USA
| | - Kang Sun
- Department of Civil and Environmental Engineering; Princeton University; Princeton New Jersey USA
| | - Mark A. Zondlo
- Department of Civil and Environmental Engineering; Princeton University; Princeton New Jersey USA
| | - David Kanter
- Woodrow Wilson School of Public and International Affairs; Princeton University; Princeton New Jersey USA
| | - Oleg Dubovik
- Laboratoire d'Optique Atmosphérique; Université de Lille 1/CNRS; Villeneuve d'Ascq France
| | | | | | - Paul Ginoux
- NOAA Geophysical Fluid Dynamics Laboratory; Princeton; New Jersey USA
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Tesfaye M, Sivakumar V, Botai J, Mengistu Tsidu G. Aerosol climatology over South Africa based on 10 years of Multiangle Imaging Spectroradiometer (MISR) data. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd016023] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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McMeeking GR, Kreidenweis SM, Baker S, Carrico CM, Chow JC, Collett JL, Hao WM, Holden AS, Kirchstetter TW, Malm WC, Moosmüller H, Sullivan AP, Wold CE. Emissions of trace gases and aerosols during the open combustion of biomass in the laboratory. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009jd011836] [Citation(s) in RCA: 291] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Pelon J, Mallet M, Mariscal A, Goloub P, Tanré D, Bou Karam D, Flamant C, Haywood J, Pospichal B, Victori S. Microlidar observations of biomass burning aerosol over Djougou (Benin) during African Monsoon Multidisciplinary Analysis Special Observation Period 0: Dust and Biomass-Burning Experiment. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008jd009976] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Eck TF, Holben BN, Reid JS, Sinyuk A, Dubovik O, Smirnov A, Giles D, O'Neill NT, Tsay SC, Ji Q, Al Mandoos A, Ramzan Khan M, Reid EA, Schafer JS, Sorokine M, Newcomb W, Slutsker I. Spatial and temporal variability of column-integrated aerosol optical properties in the southern Arabian Gulf and United Arab Emirates in summer. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007jd008944] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Tanskanen A, Lindfors A, Määttä A, Krotkov N, Herman J, Kaurola J, Koskela T, Lakkala K, Fioletov V, Bernhard G, McKenzie R, Kondo Y, O'Neill M, Slaper H, den Outer P, Bais AF, Tamminen J. Validation of daily erythemal doses from Ozone Monitoring Instrument with ground-based UV measurement data. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007jd008830] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Matichuk RI, Colarco PR, Smith JA, Toon OB. Modeling the transport and optical properties of smoke aerosols from African savanna fires during the Southern African Regional Science Initiative campaign (SAFARI 2000). ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006jd007528] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Fromm M. Pyro-cumulonimbus injection of smoke to the stratosphere: Observations and impact of a super blowup in northwestern Canada on 3–4 August 1998. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jd005350] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Park SS. Highly time-resolved organic and elemental carbon measurements at the Baltimore Supersite in 2002. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jd004610] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Müller D. Raman lidar observations of aged Siberian and Canadian forest fire smoke in the free troposphere over Germany in 2003: Microphysical particle characterization. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jd005756] [Citation(s) in RCA: 186] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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O'Neill NT. Robust optical features of fine mode size distributions: Application to the Québec smoke event of 2002. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jd005157] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Jeong MJ. Quality and compatibility analyses of global aerosol products derived from the advanced very high resolution radiometer and Moderate Resolution Imaging Spectroradiometer. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004jd004648] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Singh RP, Dey S, Tripathi SN, Tare V, Holben B. Variability of aerosol parameters over Kanpur, northern India. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2004jd004966] [Citation(s) in RCA: 301] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- R. P. Singh
- Department of Civil Engineering; Indian Institute of Technology; Kanpur India
| | - Sagnik Dey
- Department of Civil Engineering; Indian Institute of Technology; Kanpur India
| | - S. N. Tripathi
- Department of Civil Engineering; Indian Institute of Technology; Kanpur India
| | - Vinod Tare
- Department of Civil Engineering; Indian Institute of Technology; Kanpur India
| | - Brent Holben
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
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Colarco PR, Schoeberl MR, Doddridge BG, Marufu LT, Torres O, Welton EJ. Transport of smoke from Canadian forest fires to the surface near Washington, D.C.: Injection height, entrainment, and optical properties. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003jd004248] [Citation(s) in RCA: 187] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. R. Colarco
- Earth System Science Interdisciplinary Center; University of Maryland; College Park Maryland USA
| | | | - B. G. Doddridge
- Department of Meteorology; University of Maryland; College Park Maryland USA
| | - L. T. Marufu
- Department of Meteorology; University of Maryland; College Park Maryland USA
| | - O. Torres
- Joint Center for Earth Systems Technology; University of Maryland Baltimore County; Baltimore Maryland USA
| | - E. J. Welton
- NASA Goddard Space Flight Center; Greenbelt Maryland USA
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Pedrós R. Column-integrated aerosol optical properties from ground-based spectroradiometer measurements at Barrax (Spain) during the Digital Airborne Imaging Spectrometer Experiment (DAISEX) campaigns. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2002jd003331] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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