Mr. T. Adam Lawson Profile

T. Adam Lawson

at Naval Research Lab

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 30 August 2019 Presentation + Paper

Assessing nanosatellite capabilities for accurate water-leaving radiance retrievals in coastal ocean waters: a forced aerosol model approach

Sean McCarthy, Mark David Lewis, Stephanie Anderson, Paul Martinolich, Sherwin Ladner, Adam Lawson, Jason Jolliff, Richard Gould

Proceedings Volume 11131, 111310A (2019) https://doi.org/10.1117/12.2530336

KEYWORDS: Atmospheric modeling, Aerosols, Atmospheric corrections, Calibration, Planets, Data modeling, Sensors, Coastal modeling, Remote sensing, Optical properties

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Proceedings Article | 10 May 2019 Paper

Delineation of suspended solids in river outflow from Hurricane Florence using GOES-16 ABI data

Mark David Lewis, Jason Jolliff, Sherwin Ladner, Sean McCarthy, Adam Lawson, Paul Martinolich

Proceedings Volume 11014, 110140B (2019) https://doi.org/10.1117/12.2519369

KEYWORDS: Sensors, Aerosols, Calibration, Atmospheric modeling, Satellites, Solids, Data modeling, MODIS, Computer simulations, Atmospheric corrections

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Proceedings Article | 10 May 2019 Presentation + Paper

The hyperspectral signatures of complex ocean frontal boundaries: The example of cold air outbreaks in the northern Gulf of Mexico

Jason Jolliff, Sherwin Ladner, David Lewis, Ewa Jarosz, Richard Crout, Adam Lawson, Travis Smith, Sean McCarthy, Stephanie Cayula

Proceedings Volume 11014, 1101409 (2019) https://doi.org/10.1117/12.2518474

KEYWORDS: Sensors, Earth observing sensors, Meteorology, Water, Satellites, Ocean optics, Satellite imaging, Reflectivity, Latex

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Proceedings Article | 10 May 2019 Presentation + Paper

Establishing optimal matchup protocols between ocean color satellites and ground truth AeroNET-OC radiance

Adam Lawson, Sherwin Ladner, Richard Crout, Christopher Wood, Robert Arnone, Jennifer Bowers, Paul Martinolich, David Lewis

Proceedings Volume 11014, 110140C (2019) https://doi.org/10.1117/12.2521062

KEYWORDS: Satellites, Sensors, Calibration, Stray light, Satellite navigation systems, Error analysis, Solids, Earth observing sensors, Aerosols, Sensor calibration

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The SAtellite VAlidation Navy Tool (SAVANT) was developed by the Navy to help facilitate the assessment of the stability and accuracy of ocean color satellites using ground truth (insitu) platform and buoy stations positioned around the globe and support methods for match-up protocols. This automated, continuous monitoring system for satellite ocean color sensors employs a website interface to extract and graph coincident satellite and insitu data in near-real-time. Available satellite sensors include MODerate resolution Imaging Spectrometer (MODIS) onboard the Aqua satellite, Visible Infrared Imaging Radiometer Suite (VIIRS) onboard Suomi National Polar-orbitting Partnership (SNPP) & Joint Polar Satellite Sensor (JPSS), Ocean and Land Colour Instrument (OLCI) onboard the Sentinel 3A and Geostationary Ocean Color Imager (GOCI) onboard the Communication, Ocean and Meteorological Satellite (COMS). SAVANT houses an extensive match-up data set covering nineteen plus years (2000- 2019) of coincident global satellite and ground truth spectral Normalized Water Leaving Radiance (nLw) data allowing users to evaluate the accuracy of ocean color sensors spectral water leaving radiance at specific ground truth sites that provide continuous data. The tool permits changing different match-up constraints and evaluating the effects on the match-up uncertainty. Results include: a) the effects of spatial selection (using single satellite pixel versus 3x3 and 5x5 boxes, all centered around the insitu location), b) time difference between satellite overpass and ground truth observations, c) and satellite and solar zenith angles. Match-up uncertainty analyses was performed on VIIRS SNPP at the AErosol RObotic NETwork Ocean Color (AeroNET-OC) Wave Current surge Information System (WavCIS) site, maintained by NRL and the Louisiana State University (LSU) in the North Central Gulf of Mexico onboard the Chevron platform CSI-06. The VIIRS SNPP and AeroNET-OC assessment determined optimal satellite ocean color cal/val match-up protocols that reduced uncertainty in the derived satellite products.

Proceedings Article | 25 May 2018 Paper

Near real time calibration of the Ocean Land Colour Imager

Jennifer Bowers, Paul Martinolich, Richard Crout, Sherwin Ladner, Adam Lawson

Proceedings Volume 10631, 1063105 (2018) https://doi.org/10.1117/12.2309996

KEYWORDS: Calibration, Satellites, Data processing, Sensors, Error analysis, Imaging systems, Sensor calibration, Satellite imaging

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Proceedings Article | 25 May 2018 Presentation + Paper

Hyperspectral determination of ocean color as an ocean monitoring tool: example applications in the Gulf of Mexico

Jason Jolliff, Sherwin Ladner, David Lewis, Ewa Jarosz, Adam Lawson, Travis Smith, Allison Penko, Sean McCarthy

Proceedings Volume 10631, 1063104 (2018) https://doi.org/10.1117/12.2307253

KEYWORDS: Satellites, Data modeling, Ocean optics, MODIS, Reflectivity, Earth observing sensors, Satellite imaging, RGB color model, Remote sensing, Liquid crystals

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SPIE Journal Paper | 23 July 2015 Open Access

Improving remotely sensed fused ocean data products through cross-sensor calibration

Mark Lewis, Ruhul Amin, Sonia Gallegos, Richard Gould, Sherwin Ladner, Adam Lawson, Rong-Rong Li

JARS, Vol. 9, Issue 01, 095063, (July 2015) https://doi.org/10.1117/12.10.1117/1.JRS.9.095063

KEYWORDS: MODIS, Sensors, Calibration, Atmospheric corrections, Sensor calibration, Clouds, Satellites, In situ remote sensing, Data fusion, Near infrared

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Proceedings Article | 23 May 2014 Paper

Inter-satellite comparison and evaluation of Navy SNPP VIIRS and MODIS-Aqua ocean color properties

S. Ladner, R. Arnone, R. Vandermeulen, P. Martinolich, A. Lawson, J. Bowers, R. Crout, M. Ondrusek, G. Fargion

Proceedings Volume 9111, 911107 (2014) https://doi.org/10.1117/12.2053060

KEYWORDS: MODIS, Satellites, Absorption, Sensors, Signal attenuation, Optical properties, In situ metrology, Calibration, Remote sensing, Algorithm development

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Proceedings Article | 23 May 2014 Paper

Regional vicarious gain adjustment for coastal VIIRS products

Jennifer Bowers, Robert Arnone, Sherwin Ladner, Giulietta Fargion, Adam Lawson, Paul Martinolich, Ryan Vandermeulen

Proceedings Volume 9111, 911114 (2014) https://doi.org/10.1117/12.2053187

KEYWORDS: Calibration, Satellites, Image processing, Sensors, Water, Satellite imaging, Satellite navigation systems, Aerosols, Ocean optics, In situ metrology

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Proceedings Article | 23 September 2013 Paper

Scene-based cross-comparison of SNPP-VIIRS and Aqua-MODIS over oceanic waters

Nima Pahlevan, Zhongping Lee, Adam Lawson, Robert Arnone

Proceedings Volume 8866, 88660J (2013) https://doi.org/10.1117/12.2023423

KEYWORDS: MODIS, Sensors, Calibration, Aerosols, Near infrared, Water, Atmospheric corrections, Absorption, Remote sensing, Reflectivity

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Proceedings Article | 3 June 2013 Paper

Monitoring bio-optical processes using NPP-VIIRS and MODIS-Aqua ocean color products

Robert Arnone, Sherwin Ladner, Giulietta Fargion, Paul Martinolich, Ryan Vandermeulen, Jennifer Bowers, Adam Lawson

Proceedings Volume 8724, 87240Q (2013) https://doi.org/10.1117/12.2018180

KEYWORDS: Sensors, Satellites, MODIS, Aerosols, Atmospheric modeling, Atmospheric particles, Lanthanum, Satellite imaging, Atmospheric corrections, Water

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Proceedings Article | 12 June 2012 Paper

Validation of the VIIRS ocean color

Robert Arnone, Giulietta Fargion, Paul Martinolich, Sherwin Ladner, Adam Lawson, Jennifer Bowers, Michael Ondrusek, Giuseppe Zibordi, ZongPing Lee, Charles Trees, Curtiss Davis, Samuel Ahmed

Proceedings Volume 8372, 83720G (2012) https://doi.org/10.1117/12.922949

KEYWORDS: MODIS, Satellites, Sensors, Calibration, Satellite imaging, Ocean optics, Remote sensing, Databases, Reflectivity, Satellite navigation systems

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The Joint Polar Satellite System (JPSS) launched the Suomi National Polar-Orbiting Partnership (NPP) satellite including the Visible Infrared Imager Radiometer Suite (VIIRS) on October 28, 2011 which has the capability to monitor ocean color properties. Four months after launch, we present an initial assessment of the VIIRS ocean color products including inter-comparisons with satellite and in situ observations. Satellite ocean color is used to characterize water quality properties, however, this requires that the sensor is well characterized and calibrated, and that processing addresses atmospheric correction to derive radiometric water leaving radiance (nLw ). These radiometric properties are used to retrieve products such as chlorophyll, optical backscattering and absorption. The JPSS ocean calibration and validation program for VIIRS establishes methods and procedures to insure the accuracy of the retrieved ocean satellite products and to provide methods to improve algorithms and characterize the product uncertainty. A global monitoring network was established to integrate in situ data collection with satellite retrieved water leaving radiance values from ocean color satellites including Moderate Resolution Imaging Spectroradiometer (MODIS), MEdium Resolution Imaging Spectrometer (MERIS) and VIIRS. The global network provides a monitoring capability to evaluate the quality of the VIIRS nLw in different areas around the world and enables an evaluation and validation of the products using in situ data and other satellites. Monitoring of ocean color satellite retrievals is performed by tracking the "gain" at the Top of the Atmosphere (TOA) and then performing a vicarious adjustment fo reach site. VIIRS ocean color products are compared with MODIS and MERIS retrieved nLw and chlorophyll, and have been shown to provide similar quality. We believe that VIIRS can provide a follow-on to MODIS and MERIS equivalent ocean color products for operational monitoring of water quality. Additional research, including an assessment of stability, a full characterization of the sensor and algorithm comparisons is underway. Weekly sensor calibration tables (look up tables) are produced by JPSS and an evaluation of their impact on ocean color products is ongoing.

Proceedings Article | 8 October 2011 Paper

Estimating errors in satellite retrievals of bio-optical properties due to incorrect aerosol model selection

Sean McCarthy, Richard Gould, James Richman, Courtney Kearney, Adam Lawson

Proceedings Volume 8175, 817507 (2011) https://doi.org/10.1117/12.897546

KEYWORDS: Atmospheric modeling, Aerosols, Atmospheric corrections, Data modeling, Humidity, Coastal modeling, Satellites, MODIS, Lanthanum, Satellite imaging

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