Dr. Yonghua Wu Profile

Dr. Yonghua Wu

Research Assoicate at City College of New York

SPIE Involvement:

Author

Area of Expertise:

Lidar techniques and technology , Lidar remote sensing , Aerosol and cloud optical properties

Publications (25)

Proceedings Article | 24 October 2018 Paper

Lidar application to monitoring emissions and transport of particulate pollution in urban environments with high temporal and spatial resolution

Adrian Diaz Fortich, Victor Dominguez, Yonghua Wu, Mark Arend, Daniella Viviana Vladutescu, Barry Gross, Fred Moshary

Proceedings Volume 10779, 107790C (2018) https://doi.org/10.1117/12.2324848

KEYWORDS: Aerosols, LIDAR, Atmospheric particles, Ozone, Backscatter, Pollution, Spatial resolution, Environmental monitoring

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Proceedings Article | 30 August 2017 Paper

Applications of synergistic combination of remote sensing and in-situ measurements on urban monitoring of air quality

Adrian Diaz, Victor Dominguez, Mark Campmier, Yonghua Wu, Mark Arend, Daniela Viviana Vladutescu, Barry Gross, Fred Moshary

Proceedings Volume 10406, 104060N (2017) https://doi.org/10.1117/12.2281294

KEYWORDS: Aerosols, LIDAR, Atmospheric particles, Remote sensing, Pollution, Atmospheric monitoring, Wind measurement, Meteorology

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SPIE Journal Paper | 11 March 2016

Observation of aerosol–cloud interaction over New York City using synergetic ground-based remote sensing systems

Zaw Han, Yonghua Wu, Sam Lightstone, Barry Gross

JARS, Vol. 10, Issue 01, 016023, (March 2016) https://doi.org/10.1117/12.10.1117/1.JRS.10.016023

KEYWORDS: Clouds, Aerosols, Error analysis, Atmospheric modeling, LIDAR, Atmospheric particles, Liquids, Mass attenuation coefficient, Transmittance, Remote sensing

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Proceedings Article | 22 October 2013 Paper

Assessment of long scale plume transport to the US East coast using coordinated CREST lidar network and synergistic AERONET and satellite measurements

Fred Moshary, Lina Cordero, Yonghua Wu, Barry Gross, Daniel Orozco, Patricia Sawamura, Raymond Hoff, Ruben Delgado, Jia Su, Kevin Leavor, Robert Lee, M. Pat McCormick

Proceedings Volume 8894, 88940K (2013) https://doi.org/10.1117/12.2029281

KEYWORDS: Aerosols, LIDAR, Atmospheric modeling, Atmospheric particles, Satellites, Mass attenuation coefficient, MODIS, Optical properties, Data modeling, Climatology

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Proceedings Article | 17 October 2013 Paper

Assessing satellite based PM2.5 estimates against CMAQ model forecasts

Lina Cordero, Nabin Malakar, Yonghua Wu, Barry Gross, Fred Moshary, Mike Ku

Proceedings Volume 8890, 88900U (2013) https://doi.org/10.1117/12.2029320

KEYWORDS: Neural networks, MODIS, Satellites, Phase modulation, Picosecond phenomena, Data centers, Aerosols, Atmospheric modeling, Humidity, Atmospheric particles

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Proceedings Article | 29 May 2013 Paper

Assessing satellite AOD based and WRF/CMAQ output PM2.5 estimators

Lina Cordero, Yonghua Wu, Barry Gross, Fred Moshary

Proceedings Volume 8723, 872319 (2013) https://doi.org/10.1117/12.2027430

KEYWORDS: Satellites, MODIS, Atmospheric modeling, Aerosols, Performance modeling, Atmospheric particles, Phase modulation, Data modeling, Environmental sensing, Pollution control

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Fine particulate matter measurements (PM_2.5) are essential for air quality monitoring and related public health; however, the shortage of reliable measurmennts constrains researchers to use other means for obtaining reliable estimates over large scales. In particular, model forecasters and satellite community use their respective products to develop ground particulate matter estimations but few experiments have explored how the remote sensing approaches compare to the high resolution models. . In this paper we focus on studying the performance of the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Geostationary Operational Environmental Satellites (GOES) regression based estimates in comparison to more direct bias corrected outputs from the Community Multiscale Air Quality (CMAQ) model, We use a two-year dataset (2005-2006) and apply urban, season and hour filters to illustrate the agreement between estimated and in-situ measured fine particulate matter from the New York State Department of Environmental Conservation (NYSDEC). We first begin by analyzing the correspondence between ground aerosol optical depth (AOD) measurements from an AERONET (AErosol RObotic NETwork) Cimel sun/sky radiometer with both satellite and model products in one urban location; we show that satellite readings perform better than model outputs, especially during the summer (R_MODIS>=0.65, R_CMAQ>=0.37). This is a clear symptom of the difficulty in the models to properly model realistic optical properties. We then turn to a direct assessment of PM2.5 presenting individual comparisons between ground PM_2.5 measurements with satellite/model predictions and demonstrate the higher accuracy from model estimations (R^urban_MODIS ≥ 0.74, R^urban_CMAQ ≥ 0.77; R^non-urban_MODIS ≥ 0.48, R^non-urban_CMAQ ≥ 0.78). In general, we find that the bias corrected CMAQ estimates are superior to satellite based estimators except at very high resolution. Finally, we show that when using both model and satellite approximations as separate estimators merged optimally, our product (PM_2.5 average) becomes closer to real measurements with improved correlations (R_AVE ~ 0.86) in urban areas during the summer.

Proceedings Article | 9 May 2012 Paper

Use of passive and active ground and satellite remote sensing to monitor fine particulate pollutants on regional scales

Lina Cordero, Yonghua Wu, Barry Gross, Fred Moshary

Proceedings Volume 8366, 83660M (2012) https://doi.org/10.1117/12.918765

KEYWORDS: Aerosols, Satellites, LIDAR, Particles, Remote sensing, Phase modulation, Atmospheric particles, Atmospheric modeling, Humidity, Mass attenuation coefficient

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Proceedings Article | 26 October 2011 Paper

Retrieval of aerosol and cloud properties using multiwavelength elastic-Raman lidar

Yonghua Wu, Lina Cordero, Chuen-meei Gan, Barry Gross, Fred Moshary, Sam Ahmed

Proceedings Volume 8177, 81770M (2011) https://doi.org/10.1117/12.916579

KEYWORDS: Clouds, LIDAR, Aerosols, Backscatter, Calibration, Raman spectroscopy, Scattering, Signal attenuation, Atmospheric modeling, Mass attenuation coefficient

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Proceedings Article | 8 October 2011 Paper

Application of active optical sensors to probe the vertical structure of the urban boundary layer and assess anomalies in air quality model PM2.5 forecasts

Chuen-Meei Gan, Yonghua Wu, L. M. Bomidi, Barry Gross, Fred Moshary

Proceedings Volume 8182, 81820P (2011) https://doi.org/10.1117/12.898360

KEYWORDS: LIDAR, Backscatter, Data modeling, Atmospheric modeling, Clouds, Phase modulation, Wavelets, Aerosols, Spatial resolution, Remote sensing

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Proceedings Article | 26 October 2010 Paper

Potential investigation of cloud-aerosol interaction with a multiple-wavelength Raman-elastic lidar

Yonghua Wu, Lina Cordero, Chuen-meei Gan, Barry Gross, Fred Moshary, Samir Ahmed

Proceedings Volume 7832, 78320G (2010) https://doi.org/10.1117/12.865148

KEYWORDS: Clouds, LIDAR, Aerosols, Backscatter, Optical properties, Atmospheric modeling, Raman spectroscopy, Mass attenuation coefficient, Calibration, Atmospheric particles

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Proceedings Article | 26 October 2010 Paper

PBL-height derivation from the CALIOP/CALIPSO and comparing with the radiosonde and ground-based lidar measurements

Yonghua Wu, Chuen-Meei Gan, Lina Cordero, Barry Gross, Fred Moshary, Sam Ahmed

Proceedings Volume 7832, 78320C (2010) https://doi.org/10.1117/12.865146

KEYWORDS: LIDAR, Backscatter, Aerosols, Clouds, Wavelet transforms, Troposphere, Wavelets, Atmospheric modeling, Remote sensing, Scattering

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Proceedings Article | 29 April 2010 Paper

LIDAR, TEOM, and sunphotometer measured and model reconstructed atmospheric parameters

Daniela Viviana Vladutescu, Barry Gross, Yonghua Wu, Fred Moshary, Samir Ahmed

Proceedings Volume 7684, 76840K (2010) https://doi.org/10.1117/12.850521

KEYWORDS: LIDAR, Atmospheric modeling, Aerosols, Backscatter, Refractive index, Atmospheric particles, Clouds, Climatology, Atmospheric monitoring, Raman spectroscopy

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Proceedings Article | 29 April 2010 Paper

Statistical comparison between Hysplit sounding and lidar observation of planetary boundary layer characteristics over New York City

Chuen Meei Gan, Yonghua Wu, Barry Gross, Fred Moshary

Proceedings Volume 7684, 76841K (2010) https://doi.org/10.1117/12.849705

KEYWORDS: LIDAR, Atmospheric modeling, Clouds, Backscatter, Meteorology, Aerosols, Multilayers, Humidity, Image enhancement, Troposphere

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Proceedings Article | 24 April 2010 Paper

Combining VIS and MIR lidars to separate aerosol modes in the troposphere

Chuen Meei Gan, Paul Corrigan, Barry Gross, YongHua Wu, Fred Moshary

Proceedings Volume 7673, 76730T (2010) https://doi.org/10.1117/12.849697

KEYWORDS: Signal to noise ratio, Aerosols, Backscatter, LIDAR, Calibration, Sensors, Quantum cascade lasers, Receivers, Atmospheric particles, Manufacturing

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Proceedings Article | 9 October 2009 Paper

Aerosol plume observations by the ground-based lidar, sunphotometer, and satellite: cases analysis

Yonghua Wu, Chuen-meei Gan, Barry Gross, Fred Moshary, Sam Ahmed

Proceedings Volume 7479, 74790U (2009) https://doi.org/10.1117/12.830639

KEYWORDS: Aerosols, LIDAR, Clouds, Satellites, MODIS, Mass attenuation coefficient, Backscatter, Signal attenuation, Atmospheric particles, Refractive index

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Proceedings Article | 9 October 2009 Paper

Comparison of lidar calibration at 1064-nm channel using the water-phase and cirrus clouds

Yonghua Wu, Shuki Chaw, Barry Gross, Fred Moshary, Sam Ahmed

Proceedings Volume 7479, 74790V (2009) https://doi.org/10.1117/12.830643

KEYWORDS: LIDAR, Clouds, Calibration, Aerosols, Backscatter, Transmittance, Scattering, Signal detection, Signal attenuation, Signal to noise ratio

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Proceedings Article | 9 October 2009 Paper

Improvement of optical depth relations to PM2.5 concentrations using lidar derived PBL heights

S. Chaw, Y. Wu, B. Gross, F. Moshary, S. Ahmed

Proceedings Volume 7479, 747906 (2009) https://doi.org/10.1117/12.830664

KEYWORDS: MODIS, Aerosols, Atmospheric modeling, Satellites, LIDAR, Data modeling, Remote sensing, Sensors, Atmospheric particles, Phase modulation

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Proceedings Article | 12 August 2009 Paper

Comparisons of aerosol-cloud observations between a ground-based Raman-Mie lidar and CALIPSO over U.S. East Coast

Yonghua Wu, Ben Herman, Barry Gross, Fred Moshary, Samir Ahmed

Proceedings Volume 7460, 74600E (2009) https://doi.org/10.1117/12.826240

KEYWORDS: Aerosols, LIDAR, Clouds, Backscatter, Ocean optics, Signal attenuation, Mass attenuation coefficient, Signal detection, Calibration, Refractive index

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Proceedings Article | 12 August 2009 Paper

Using MIE Raman S ratio lidar measurements to explore cloud droplet properties and the aerosol indirect effect

Shuki Chaw, Yonghua Wu, Erika Garofalo, Barry Gross, Fred Moshary, Samir Ahmed

Proceedings Volume 7460, 74600G (2009) https://doi.org/10.1117/12.826230

KEYWORDS: Clouds, LIDAR, Aerosols, Raman spectroscopy, Backscatter, Scattering, Atmospheric modeling, Signal attenuation, Atmospheric particles, Signal to noise ratio

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Proceedings Article | 20 October 2008 Paper

Cloud optical depth measurement comparison between a Raman-Mie and Mie elastic lidar

Yonghua Wu, Shuki Chaw, Barry Gross, Fred Moshary, Sam Ahmed

Proceedings Volume 7111, 71110Q (2008) https://doi.org/10.1117/12.800401

KEYWORDS: Clouds, LIDAR, Aerosols, Backscatter, Raman spectroscopy, Scattering, Optical testing, Atmospheric modeling, Signal attenuation, Atmospheric particles

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Proceedings Article | 8 October 2007 Paper

GPS calibrated multiwavelength water vapor Raman lidar measurements to assess urban aerosol hygroscopicity

Daniela Viviana Vladutescu, Barry Gross, Yonghua Wu, Alex Gilerson, Fred Moshary, Samir Ahmed

Proceedings Volume 6750, 67500R (2007) https://doi.org/10.1117/12.738040

KEYWORDS: Atmospheric modeling, Aerosols, Atmospheric particles, LIDAR, Backscatter, Raman spectroscopy, Water, Humidity, Calibration, Refractive index

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Proceedings Article | 26 September 2007 Paper

Atmospheric transport of smoke and dust particulates and their interaction with the Planetary Boundary Layer as observed by multi-wavelength lidar and supporting instrumentation

Leona Charles, Barry Gross, Yonghua Wu, Viviana Vladutescu, Fred Moshary, Sam Ahmed

Proceedings Volume 6681, 66810K (2007) https://doi.org/10.1117/12.731943

KEYWORDS: Aerosols, LIDAR, Backscatter, Atmospheric particles, Atmospheric modeling, Clouds, Radio optics, Atmospheric optics, MODIS, Satellites

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Proceedings Article | 26 September 2007 Paper

Raman-Mie lidar measurements of low and optically thin cloud

Yonghua Wu, Shuki Chaw, Barry Gross, Viviana Vladutescu, Leona Charles, Nianwen Cao, Fred Moshary, Sam Ahmed

Proceedings Volume 6681, 66810T (2007) https://doi.org/10.1117/12.734126

KEYWORDS: Clouds, LIDAR, Aerosols, Scattering, Raman spectroscopy, Backscatter, Multiple scattering, Atmospheric modeling, Raman scattering, Signal to noise ratio

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Proceedings Article | 26 September 2007 Paper

Backscatter properties of hygroscopic aerosols using models, combined multiwavelength Raman lidar, GPS, and radiosonds

Daniela-Viviana Vladutescu, Barry Gross, Yonghua Wu, Leona Charles, Fred Moshary, Samir Ahmed

Proceedings Volume 6681, 66810E (2007) https://doi.org/10.1117/12.731141

KEYWORDS: Atmospheric modeling, Aerosols, Atmospheric particles, Backscatter, LIDAR, Raman spectroscopy, Water, Humidity, Calibration, Refractive index

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Proceedings Article | 25 September 2007 Paper

Intercomparison of calibration techniques for 1064nm NIR elastic lidar

Shuki Chaw, Yonghua Wu, Barry Gross, Fred Moshary, Samir Ahmed

Proceedings Volume 6760, 676007 (2007) https://doi.org/10.1117/12.734585

KEYWORDS: Clouds, Calibration, LIDAR, Backscatter, Aerosols, Multiple scattering, Signal attenuation, Atmospheric modeling, Near infrared, Signal to noise ratio

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Showing 5 of 25 publications

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