Sciences and Exploration Directorate

Ziauddin Ahmad


Ziauddin Ahmad's Contact Card & Information.
Phone: 301.286.1404
Org Code: 616
Mail Code 616.2
Greenbelt, MD 20771
Employer: Science Application International Corp.



2022. "Estimating pixel-level uncertainty in ocean color retrievals from MODIS." Optics Express 30 (17): 31415 [10.1364/oe.460735] [Journal Article/Letter]

2021. "Analysis of simultaneous aerosol and ocean glint retrieval using multi-angle observations." Atmospheric Measurement Techniques 14 3233-3252 [10.5194/amt-14-3233-2021] [Journal Article/Letter]

2019. "Atmospheric Correction of Satellite Ocean-Color Imagery During the PACE Era." Frontiers in Earth Science 7 [10.3389/feart.2019.00145] [Journal Article/Letter]

2019. "Retrieving Aerosol Characteristics From the PACE Mission, Part 2: Multi-Angle and Polarimetry." Frontiers in Environmental Science 7 [10.3389/fenvs.2019.00094] [Journal Article/Letter]

2019. "Retrieving Aerosol Characteristics From the PACE Mission, Part 1: Ocean Color Instrument." Frontiers in Earth Science 7 [10.3389/feart.2019.00152] [Journal Article/Letter]

2019. "Multiband Atmospheric Correction Algorithm for Ocean Color Retrievals." Frontiers in Earth Science 7 [10.3389/feart.2019.00116] [Journal Article/Letter]

2019. "Going Beyond Standard Ocean Color Observations: Lidar and Polarimetry." Frontiers in Marine Science 6 [10.3389/fmars.2019.00251] [Journal Article/Letter]

2018. "Atmospheric correction for hyperspectral ocean color retrieval with application to the Hyperspectral Imager for the Coastal Ocean (HICO)." Remote Sensing of Environment 204 60-75 [10.1016/j.rse.2017.10.041] [Journal Article/Letter]

2017. "Revisiting short-wave-infrared (SWIR) bands for atmospheric correction in coastal waters." Opt. Express 25 (6): 6015--6035 [Journal Article/Letter]

2016. "The Sensitivity of SeaWiFS Ocean Color Retrievals to Aerosol Amount and Type." J. Atmos. and Oceanic Tech 33 (6): 1185–1209 [10.1175/JTECH-D-15.0121.1] [Journal Article/Letter]

2012. "SeaWiFS Ocean Aerosol Retrieval (SOAR): Algorithm, validation, and comparison with other data sets." J. Geophys. Res. 117 (D3): D03206 [10.1029/2011JD016599] [Journal Article/Letter]

2010. "New aerosol models for the retrieval of aerosol optical thickness and normalized water-leaving radiances from the SeaWiFS and MODIS sensors over coastal regions and open oceans." Applied Optics 49 (29): 5545 [10.1364/AO.49.005545] [Journal Article/Letter]

2007. "Atmospheric correction for NO2 absorption in retrieving water-leaving reflectances from the SeaWiFS and MODIS measurements." Applied Optics 46 (26): 6504 [10.1364/AO.46.006504] [Journal Article/Letter]

2006. "Bio-optics of the Chesapeake Bay from measurements and radiative transfer closure." Estuarine, Coastal and Shelf Science 68 (1-2): 348-362 [10.1016/j.ecss.2006.02.016] [Journal Article/Letter]

2005. "Assessment of the ultraviolet radiation field in ocean waters from space-based measurements and full radiative-transfer calculations." Appl Optics 44 (14): 2863-2869 [10.1364/AO.44.002863] [Journal Article/Letter]

2004. "Spectral properties of backscattered UV radiation in cloudy atmospheres." J. Geophys. Res. 109 (D1): D01201 [10.1029/2003JD003395] [Journal Article/Letter]

2002. "Applications of ultraviolet absolute radiometry in satellite and surface-based remote sensing of atmospheric ozone." Opt Eng 41 (12): 3104-3110 [10.1117/1.1516825] [Journal Article/Letter]

2002. "Validation of MODIS aerosol retrieval over ocean." Geophys Res Lett 29 (12): [10.1029/2001GL013204] [Journal Article/Letter]

2001. "A fast, accurate algorithm to account for non-Lambertian surface effects on TOA radiance." J. Geophys. Res. 106 (D19): 22,671-22,684 [10.1029/2001JD900215] [Journal Article/Letter]

2000. "Atmospheric Correction Algorithm for Hyperspectral Remote Sensing of Ocean Color from Space." Applied Optics 39 (6): 887-896 [10.1364/AO.39.000887] [Journal Article/Letter]

1998. "Derivation of aerosol properties from satellite measurements of backscattered ultraviolet radiation. Theoretical basis." J Geophys Res 103 (D14): 17099-17110 [10.1029/98JD00900] [Journal Article/Letter]

1996. "UV-B increases (1979-1992) from decrease in total ozone." Geophys Res Lett 23 21107-21120 [Journal Article/Letter]

1995. "Properties of Mt. Pinatubo Aerosols as derived from Nimbus 7 TOMS measurements." J. Geophys. Res. 100 14043 14055 [Journal Article/Letter]

1995. "Effect of molecular anisotropy on backscattered ultraviolet radiance." Applied Optics 34 (36): 8309 [10.1364/AO.34.008309] [Journal Article/Letter]

1994. "Accuracy of total ozone retrieval from NOAA SBUV/2 measurements: Impact of instrument performance." J Geophys Res 99 (D11): 22,975-22,984 [10.1029/94JD01528] [Journal Article/Letter]

1994. "Properties of mount Pinatubo aerosols as derived from Nimbus-TOMS measurements." J Geophys Res 100 14043-14055 [Journal Article/Letter]

1992. "Optical Effects of Polar Stratospheric Clouds on the Retrieval of TOMS Total Ozone." J. Geophys. Res. 97 13015 13024. [Journal Article/Letter]

1992. "Optical effects of polar stratosphere clouds on the retrieval of toms total ozone." J Geophys Res 97 13015-13024 [Journal Article/Letter]

1991. "A new self-calibration method applied to TOMS and SBUV backscattered ultraviolet data to determine long-term global ozone change." J Geophys Res 94 (D4): 7531-7545 [10.1029/90JD02662] [Journal Article/Letter]

1983. "Satellite measurements of cloud reflectance and optical thickness." Adv Space Res 2 29-34 [Journal Article/Letter]

1982. "An iterative radiative transfer code for ocean-atmospheric systems." J Atmos Sci 39 (3): 656-665 [10.1175/1520-0469(1982)039<0656:AIRTCF>2.0.CO;2] [Journal Article/Letter]

1982. "Multi-channel improvements to satellite derived global sea surface temperatures." Adv Space Res 2 (6): 43-47 [Journal Article/Letter]


2011. "Requirements for an Advanced Ocean Radiometer ." NASA Tech Memo 37 [Other]

2006. "MODIS Land Bands for Ocean Remote Sensing Applications." Proc. Ocean Optics XVIII [Proceedings]

2003. "Seasonal variation of UV radiation in the ocean under clear and cloudy conditions." Proc. SPIE 5156, Ultraviolet Ground- and Space-based Measurements, Models, and Effects III 5156 63-73 [10.1117/12.505298] [Proceedings]