Sciences and Exploration Directorate

Ghassan Taha



Org Code: 614

Mail Code: 614
Greenbelt, MD 20771


Brief Bio

Dr. Taha received his Ph.D in Atmospheric Physics in 2000 from University of New South Wales, Sydney, Australia, and B.S. in Applied Physics from Kuwait university in 1988.

Before joining Morgan State university in December 2021, Dr. Taha worked at USRA for 9 years and SSAI for six years. He also worked for University of Arizona at NASA Langley Research Centre as part of the SAGE III meteor team. He is currently the PI of the OMPS LP aerosol products.

Research Interests

Aerosol and trace gases measurements

Earth Science: Remote Sensing

Ozone and aerosol limb retrieval algorithm developments, as well theoretical and experimental studies relating to trace gases and atmospheric aerosol variability and trends using satellite remote sensing techniques. Validation and measurement's quality of trace gases and aerosol profiles.


Senior Research Scientist

Morgan State University - NASA/GSFC, Greenbelt, MD

December 2021 - Present

Senior Scientist/Manager

Universities Space Research Association - NASA/GSFC, Greenbelt, MD

October 2020 - December 2021

Senior Scientist

Universities Space Research Association - NASA/GSFC, Greenbelt, MD

October 2018 - October 2020

Research Scientist III

Universities Space Research Association - NASA/GSFC, Greenbelt, MD

February 2012 - October 2018

Senior Scientist

SSAI - NASA GSFC, Lanham, Maryland

June 2006 - 2011

Atmospheric Scientist

SAIC - NASA LaRC, Hampton, Virginia

2004 - June 2005

Research Scientist

University of Arizona - NASA LaRC, Hampton, Virginia

September 2000 - 2004


Ph.D. in Atmospheric Physics, University of New South Wales, Sydney, Australia, 2000

B.S. Applied Physics, Kuwait University, 1988


The National Aeronautics and Space Administration (NASA) Group Achievement Award, 2011.

SSAI Publication Awards, 10/2006, 03/2007, 08/2007, 03/2009, and 3/2011.

The National Aeronautics and Space Administration (NASA) Group Achievement Award, 2007.

The National Aeronautics and Space Administration (NASA) Group Achievement Award, 2004.


Algorithm Development and Validation Towards an Improved Aerosol Extinction Profile Dataset from the Suomi NPP OMPS LP

OMPS LP aerosol retrieval - NASA ROSES (NNH17ZDA001N-TASNPP) - Awarded: 2018-03-31

Dates: 2018-06-01  - 2021-05-31

Validation of SAGE III/ISS solar and lunar products using backward and forward trajectories

SAGE III/ISS Validation - NASA ROSES (NNH17ZDA001N-SAGEIII) - Awarded: 2018-03-30

Atmospheric retrievals from SAGE III limb scatter measurements

SAGE III/ISS LS retrieval - NASA ROSES (NNH17ZDA001N-SAGEIII) - Awarded: 2018-06-01

Dates: 2018-06-01  - 2021-05-31

Effects of the Asian summer monsoon dynamics on aerosol composition and interannual variability in the UT/LS

Asian monsoon aerosol - NASA ROSES (NNH19ZDA001N-AURAST) - Awarded: 2020-03-15

Dates: 2021-06-01  - 2024-05-31

Algorithm Development and Validation of the Aerosol Extinction Profile Dataset from the Suomi NPP OMPS Limb Profiler

OMOPS LP aerosol retrieval - NASA ROSES (NNH20ZDA001N-SNPPSP,) - Awarded: 2021-10-15

Dates: 2021-10-15  - 2021-10-15



Voudouri, K. A., K. Michailidis, M.-E. Koukouli, et al. S. Rémy, A. Inness, G. Taha, G. Peletidou, N. Siomos, D. Balis, and M. Parrington. 2023. Investigating a Persistent Stratospheric Aerosol Layer Observed over Southern Europe during 2019 Remote Sensing 15 (22): 5394 [10.3390/rs15225394]

Asher, E., M. Todt, K. Rosenlof, et al. T. Thornberry, R.-S. Gao, G. Taha, P. Walter, S. Alvarez, J. Flynn, S. M. Davis, S. Evan, J. Brioude, J.-M. Metzger, D. F. Hurst, E. Hall, and K. Xiong. 2023. Unexpectedly rapid aerosol formation in the Hunga Tonga plume Proceedings of the National Academy of Sciences 120 (46): [10.1073/pnas.2219547120]

Schoeberl, M. R., Y. Wang, R. Ueyama, et al. A. Dessler, G. Taha, and W. Yu. 2023. The Estimated Climate Impact of the Hunga Tonga‐Hunga Ha'apai Eruption Plume Geophysical Research Letters 50 (18): [10.1029/2023gl104634]

Schoeberl, M. R., Y. Wang, R. Ueyama, G. Taha, and W. Yu. 2023. The Cross Equatorial Transport of the Hunga Tonga‐Hunga Ha'apai Eruption Plume Geophysical Research Letters 50 (4): [10.1029/2022gl102443]

Strode, S. A., G. Taha, L. D. Oman, et al. R. Damadeo, D. Flittner, M. Schoeberl, C. E. Sioris, and R. Stauffer. 2022. SAGE III/ISS ozone and NO<sub>2</sub> validation using diurnal scaling factors Atmospheric Measurement Techniques 15 (20): 6145-6161 [10.5194/amt-15-6145-2022]

Zhu, Y., C. G. Bardeen, S. Tilmes, et al. M. J. Mills, X. Wang, V. L. Harvey, G. Taha, D. Kinnison, R. W. Portmann, P. Yu, K. H. Rosenlof, M. Avery, C. Kloss, C. Li, A. S. Glanville, L. Millán, T. Deshler, N. Krotkov, and O. B. Toon. 2022. Perturbations in stratospheric aerosol evolution due to the water-rich plume of the 2022 Hunga-Tonga eruption Communications Earth &amp; Environment 3 (1): 248 [10.1038/s43247-022-00580-w]

Schoeberl, M. R., Y. Wang, R. Ueyama, et al. G. Taha, E. Jensen, and W. Yu. 2022. Analysis and Impact of the Hunga Tonga‐Hunga Ha'apai Stratospheric Water Vapor Plume Geophysical Research Letters 49 (20): [10.1029/2022gl100248]

Taha, G., R. Loughman, P. R. Colarco, et al. T. Zhu, L. W. Thomason, and G. Jaross. 2022. Tracking the 2022 Hunga Tonga‐Hunga Ha'apai aerosol cloud in the upper and middle stratosphere using space‐based observations Geophysical Research Letters [10.1029/2022gl100091]

Strahan, S. E., D. Smale, S. Solomon, et al. G. Taha, M. R. Damon, S. D. Steenrod, N. Jones, B. Liley, R. Querel, and J. Robinson. 2022. Unexpected Repartitioning of Stratospheric Inorganic Chlorine After the 2020 Australian Wildfires Geophysical Research Letters 49 (14): [10.1029/2022gl098290]

Tidiga, M., G. Berthet, F. Jégou, et al. C. Kloss, N. Bègue, J.-P. Vernier, J.-B. Renard, A. Bossolasco, L. Clarisse, G. Taha, T. Portafaix, T. Deshler, F. G. Wienhold, S. Godin-Beekmann, G. Payen, J.-M. Metzger, V. Duflot, and N. Marquestaut. 2022. Variability of the Aerosol Content in the Tropical Lower Stratosphere from 2013 to 2019: Evidence of Volcanic Eruption Impacts Atmosphere 13 (2): 250 [10.3390/atmos13020250]

Schoeberl, M., E. Jensen, T. Wang, et al. G. Taha, R. Ueyama, Y. Wang, M. DeLand, and A. Dessler. 2021. Cloud and Aerosol Distributions From SAGE III/ISS Observations Journal of Geophysical Research: Atmospheres 126 (23): [10.1029/2021jd035550]

Gorkavyi, N., N. Krotkov, C. Li, et al. L. Lait, P. Colarco, S. Carn, M. DeLand, P. Newman, M. Schoeberl, G. Taha, O. Torres, A. Vasilkov, and J. Joiner. 2021. Tracking aerosols and SO2 clouds from the Raikoke eruption: 3D view from satellite observations Atmospheric Measurement Techniques 14 (12): 7545-7563 [10.5194/amt-14-7545-2021]

Das, S., P. R. Colarco, L. D. Oman, G. Taha, and O. Torres. 2021. The long-term transport and radiative impacts of the 2017 British Columbia pyrocumulonimbus smoke aerosols in the stratosphere Atmospheric Chemistry and Physics 21 (15): 12069-12090 [10.5194/acp-21-12069-2021]

Peterson, D. A., M. D. Fromm, R. H. McRae, et al. J. R. Campbell, E. J. Hyer, G. Taha, C. P. Camacho, G. P. Kablick, C. C. Schmidt, and M. T. DeLand. 2021. Australia’s Black Summer pyrocumulonimbus super outbreak reveals potential for increasingly extreme stratospheric smoke events npj Climate and Atmospheric Science 4 (1): 38 [10.1038/s41612-021-00192-9]

Taha, G., R. Loughman, T. Zhu, et al. L. Thomason, J. Kar, L. Rieger, and A. Bourassa. 2021. OMPS LP Version 2.0 Multi-wavelength Aerosol Extinction Coefficient Retrieval Algorithm Atmos. Meas. Tech. 14 1015–1036 [10.5194/amt-2020-329]

Kloss, C., G. Berthet, P. Sellitto, et al. F. Ploeger, G. Taha, M. Tidiga, M. Eremenko, A. Bossolasco, F. Jégou, J.-B. Renard, and B. Legras. 2021. Stratospheric aerosol layer perturbation caused by the 2019 Raikoke and Ulawun eruptions and their radiative forcing Atmospheric Chemistry and Physics 21 (1): 535-560 [10.5194/acp-21-535-2021]

Davis, S., R. Damadeo, D. Flittner, et al. K. H. Rosenlof, M. Park, W. Randel, E. Hall, D. Huber, D. Hurst, A. Jordan, S. Kizer, L. Millan, H. Selkirk, G. Taha, K. A. Walker, and H. Vömel. 2020. Validation of SAGE III/ISS solar water vapor data with correlative satellite and balloon‐borne measurements Journal of Geophysical Research: Atmospheres [10.1029/2020jd033803]

Ades, M., R. Adler, R. Allan, et al. R. P. Allan, J. Anderson, A. Argüez, C. Arosio, J. A. Augustine, C. Azorin-Molina, J. Barichivich, J. Barnes, H. E. Beck, A. Becker, N. Bellouin, A. Benedetti, D. I. Berry, S. Blenkinsop, O. Bock, M. G. Bosilovich, O. Boucher, S. A. Buehler, L. Carrea, H. H. Christiansen, F. Chouza, J. R. Christy, E.-S. Chung, M. Coldewey-Egbers, G. P. Compo, O. R. Cooper, C. Covey, A. Crotwell, S. M. Davis, E. de Eyto, R. A. de Jeu, B. VanderSat, C. L. DeGasperi, D. Degenstein, L. Di Girolamo, M. T. Dokulil, M. G. Donat, W. A. Dorigo, I. Durre, G. S. Dutton, G. Duveiller, J. W. Elkins, V. E. Fioletov, J. Flemming, M. J. Foster, R. A. Frey, S. M. Frith, L. Froidevaux, J. Garforth, S. K. Gupta, L. Haimberger, B. D. Hall, I. Harris, A. K. Heidinger, D. L. Hemming, S.-P. (. Ho, D. Hubert, D. F. Hurst, I. Hüser, A. Inness, K. Isaksen, V. John, P. D. Jones, J. W. Kaiser, S. Kelly, S. Khaykin, R. Kidd, H. Kim, Z. Kipling, B. M. Kraemer, D. P. Kratz, R. S. La Fuente, X. Lan, K. O. Lantz, T. Leblanc, B. Li, N. G. Loeb, C. S. Long, D. Loyola, W. Marszelewski, B. Martens, L. May, M. Mayer, M. F. McCabe, T. R. McVicar, C. A. Mears, W. P. Menzel, C. J. Merchant, B. R. Miller, D. G. Miralles, S. A. Montzka, C. Morice, J. Mühle, R. Myneni, J. P. Nicolas, J. Noetzli, T. J. Osborn, T. Park, A. Pasik, A. M. Paterson, M. S. Pelto, S. Perkins-Kirkpatrick, G. Pétron, C. Phillips, B. Pinty, S. Po-Chedley, L. Polvani, W. Preimesberger, M. Pulkkanen, W. J. Randel, S. Rémy, L. Ricciardulli, A. D. Richardson, L. Rieger, D. A. Robinson, M. Rodell, K. H. Rosenlof, C. Roth, A. Rozanov, J. A. Rusak, O. Rusanovskaya, T. Rutishäuser, A. Sánchez-Lugo, P. Sawaengphokhai, T. Scanlon, V. Schenzinger, S. G. Schladow, R. W. Schlegel, E. Schmid, Martin, H. B. Selkirk, S. Sharma, L. Shi, S. V. Shimaraeva, E. A. Silow, A. J. Simmons, C. A. Smith, S. L. Smith, B. J. Soden, V. Sofieva, T. H. Sparks, P. W. Stackhouse, W. Steinbrecht, D. A. Streletskiy, G. Taha, H. Telg, S. J. Thackeray, M. A. Timofeyev, K. Tourpali, M. R. Tye, R. J. van der A, R. V. van der Schalie, G. van der SchrierW. Paul, G. R. van der Werf, P. Verburg, J.-P. Vernier, H. Vömel, R. S. Vose, R. Wang, S. G. Watanabe, M. Weber, G. A. Weyhenmeyer, D. Wiese, A. C. Wilber, J. D. Wild, T. Wong, R. I. Woolway, X. Yin, L. Zhao, G. Zhao, X. Zhou, J. R. Ziemke, and M. Ziese. 2020. Global Climate Bulletin of the American Meteorological Society 101 (8): S9-S128 [10.1175/bams-d-20-0104.1]

Chen, Z., P. K. Bhartia, O. Torres, et al. G. Jaross, R. Loughman, M. DeLand, P. Colarco, R. Damadeo, and G. Taha. 2020. Evaluation of the OMPS/LP stratospheric aerosol extinction product using SAGE III/ISS observations Atmospheric Measurement Techniques 13 (6): 3471-3485 [10.5194/amt-13-3471-2020]

Wang, H. J., R. Damadeo, D. Flittner, et al. N. Kramarova, G. Taha, S. Davis, A. M. Thompson, S. Strahan, Y. Wang, L. Froidevaux, D. Degenstein, A. Bourassa, W. Steinbrecht, K. A. Walker, R. Querel, T. Leblanc, S. Godin‐Beekmann, D. Hurst, and E. Hall. 2020. Validation of SAGE III/ISS Solar Occultation Ozone Products With Correlative Satellite and Ground‐Based Measurements Journal of Geophysical Research: Atmospheres 125 (11): [10.1029/2020jd032430]

Torres, O., P. Bhartia, G. Taha, et al. H. Jethva, S. Das, P. Colarco, N. Krotkov, A. Omar, and C. Ahn. 2020. Stratospheric Injection of Massive Smoke Plume from Canadian Boreal Fires in 2017 as seen by DSCOVR‐EPIC, CALIOP and OMPS‐LP Observations Journal of Geophysical Research: Atmospheres [10.1029/2020jd032579]

Kloss, C., G. Berthet, P. Sellitto, et al. F. Ploeger, S. Bucci, S. Khaykin, F. Jégou, G. Taha, L. W. Thomason, B. Barret, E. Le Flochmoen, M. von Hobe, A. Bossolasco, N. Bègue, and B. Legras. 2019. Transport of the 2017 Canadian wildfire plume to the tropics via the Asian monsoon circulation Atmospheric Chemistry and Physics 19 (21): 13547-13567 [10.5194/acp-19-13547-2019]

Wu, D., T. Wang, T. Várnai, et al. J. Limbacher, R. Kahn, G. Taha, J. Lee, J. Gong, and T. Yuan. 2018. MISR Radiance Anomalies Induced by Stratospheric Volcanic Aerosols Remote Sensing 10 (12): 1875 [10.3390/rs10121875]

Loughman, R., P. K. Bhartia, Z. Chen, et al. P. Xu, E. Nyaku, and G. Taha. 2018. The Ozone Mapping and Profiler Suite (OMPS) Limb Profiler (LP) Version 1 aerosol extinction retrieval algorithm: theoretical basis Atmospheric Measurement Techniques 11 (5): 2633-2651 [10.5194/amt-11-2633-2018]

Huang, G., X. Liu, K. Chance, et al. K. Yang, P. K. Bhartia, Z. Cai, M. Allaart, G. Ancellet, B. Calpini, G. J. Coetzee, E. Cuevas-Agulló, M. Cupeiro, H. De Backer, M. K. Dubey, H. E. Fuelberg, M. Fujiwara, S. Godin-Beekmann, T. J. Hall, B. Johnson, E. Joseph, R. Kivi, B. Kois, N. Komala, G. König-Langlo, G. Laneve, T. Leblanc, M. Marchand, K. R. Minschwaner, G. Morris, M. J. Newchurch, S.-Y. Ogino, N. Ohkawara, A. J. Piters, F. Posny, R. Querel, R. Scheele, F. J. Schmidlin, R. C. Schnell, O. Schrems, H. Selkirk, M. Shiotani, P. Skrivánková, R. Stübi, G. Taha, D. W. Tarasick, A. M. Thompson, V. Thouret, M. B. Tully, R. Van Malderen, H. Vömel, P. von der Gathen, J. C. Witte, and M. Yela. 2017. Validation of 10-year SAO OMI Ozone Profile (PROFOZ) product using ozonesonde observations Atmospheric Measurement Techniques 10 (7): 2455-2475 [10.5194/amt-10-2455-2017]

Moy, L., P. K. Bhartia, G. Jaross, et al. R. Loughman, N. Kramarova, Z. Chen, G. Taha, G. Chen, and P. Xu. 2017. Altitude registration of limb-scattered radiation Atmospheric Measurement Techniques 10 (1): 167-178 [10.5194/amt-10-167-2017]

Hubert, D., J.-C. Lambert, T. Verhoelst, et al. J. Granville, A. Keppens, J.-L. Baray, A. E. Bourassa, U. Cortesi, D. A. Degenstein, L. Froidevaux, S. Godin-Beekmann, K. W. Hoppel, B. J. Johnson, E. Kyrölä, T. Leblanc, G. Lichtenberg, M. Marchand, C. T. McElroy, D. Murtagh, H. Nakane, T. Portafaix, R. Querel, J. M. Russell III, J. Salvador, H. G. Smit, K. Stebel, W. Steinbrecht, K. B. Strawbridge, R. Stübi, D. P. Swart, G. Taha, D. W. Tarasick, A. M. Thompson, J. Urban, J. A. van Gijsel, R. Van Malderen, P. von der Gathen, K. A. Walker, E. Wolfram, and J. M. Zawodny. 2016. Ground-based assessment of the bias and long-term stability of 14 limb and occultation ozone profile data records Atmospheric Measurement Techniques 9 (6): 2497-2534 [10.5194/amt-9-2497-2016]

Taha, G., D. F. Rault, R. P. Loughman, A. E. Bourassa, and C. von Savigny. 2011. SCIAMACHY stratospheric aerosol extinction profile retrieval using the OMPS/LP algorithm Atmospheric Measurement Techniques 4 (3): 547-556 [10.5194/amt-4-547-2011]

Taha, G., G. R. Jaross, D. Fussen, et al. F. Vanhellemont, E. Kyrölä, and R. D. Mc Peters. 2008. Ozone profile retrieval from GOMOS limb scattering measurements J. Geophys. Res. 113 (D23): D23307 [10.1029/2007JD009409]

Rault, D., R. Loughman, and G. Taha. 2008. Data analysis and retrieval algorithms for the ozone mapping and profiler suite/limb profiler instrument Proc. SPIE 7107, Remote Sensing of Clouds and the Atmosphere XIII 71070 71070T [10.1117/12.800672]

Rault, D. F., and G. Taha. 2007. Validation of ozone profiles retrieved from Stratospheric Aerosol and Gas Experiment III limb scatter measurements Journal of Geophysical Research: Atmospheres 112 (D13): 2006JD007679 [10.1029/2006jd007679]

Brohede, S. M., C. S. Haley, C. A. McLinden, et al. C. E. Sioris, D. P. Murtagh, S. V. Petelina, E. J. Llewellyn, A. Bazureau, F. Goutail, C. E. Randall, J. D. Lumpe, G. Taha, L. W. Thomasson, and L. L. Gordley. 2007. Validation of Odin/OSIRIS stratospheric NO2profiles Journal of Geophysical Research 112 (D7): D07310 [10.1029/2006jd007586]

Taha, G., G. P. Box, D. D. Cohen, and E. Stelcer. 2007. Black Carbon Measurement using Laser Integrating Plate Method Aerosol Science and Technology 41 (3): 266-276 [10.1080/02786820601156224]

Brinksma, E. J., A. Bracher, D. E. Lolkema, et al. A. J. Segers, I. S. Boyd, K. Bramstedt, H. Claude, S. Godin-Beekmann, G. Hansen, G. Kopp, T. Leblanc, I. S. McDermid, Y. J. Meijer, H. Nakane, A. Parrish, C. von Savigny, K. Stebel, D. P. Swart, G. Taha, and A. J. Piters. 2006. Geophysical validation of SCIAMACHY Limb Ozone Profiles Atmospheric Chemistry and Physics 6 (1): 197-209 [10.5194/acp-6-197-2006]

Sugita, T., H. Nakajima, T. Yokota, et al. H. Kanzawa, H. Gernandt, A. Herber, P. von der Gathen, G. König-Langlo, K. Sato, V. Dorokhov, V. A. Yushkov, Y. Murayama, M. Yamamori, S. Godin-Beekmann, F. Goutail, H. K. Roscoe, T. Deshler, M. Yela, P. Taalas, E. Kyrö, S. J. Oltmans, B. J. Johnson, M. Allaart, Z. Litynska, A. Klekociuk, S. B. Andersen, G. O. Braathen, H. De Backer, C. E. Randall, R. M. Bevilacqua, G. Taha, L. W. Thomason, H. Irie, M. K. Ejiri, N. Saitoh, T. Tanaka, Y. Terao, H. Kobayashi, and Y. Sasano. 2006. Ozone profiles in the high-latitude stratosphere and lower mesosphere measured by the Improved Limb Atmospheric Spectrometer (ILAS)-II: Comparison with other satellite sensors and ozonesondes Journal of Geophysical Research 111 (D11): D11S02 [10.1029/2005jd006439]

Saitoh, N., S. Hayashida, T. Sugita, et al. H. Nakajima, T. Yokota, M. Hayashi, K. Shiraishi, H. Kanzawa, M. K. Ejiri, H. Irie, T. Tanaka, Y. Terao, R. M. Bevilacqua, C. E. Randall, L. W. Thomason, G. Taha, H. Kobayashi, and Y. Sasano. 2006. Intercomparison of ILAS-II version 1.4 aerosol extinction coefficient at 780 nm with SAGE II, SAGE III, and POAM III Journal of Geophysical Research 111 (D11): D11S05 [10.1029/2005jd006315]

Lumpe, J., R. Bevilacqua, C. Randall, et al. G. Nedoluha, K. Hoppel, J. Russell, V. L. Harvey, C. Schiller, B. Sen, G. Taha, G. Toon, and H. Vömel. 2006. Validation of Polar Ozone and Aerosol Measurement (POAM) III version 4 stratospheric water vapor Journal of Geophysical Research 111 (D11): D11301 [10.1029/2005jd006763]

Taha, G. 2004. Comparison of Stratospheric Aerosol and Gas Experiment (SAGE) II version 6.2 water vapor with balloon-borne and space-based instruments Journal of Geophysical Research 109 (D18): D18313 [10.1029/2004jd004859]

Thomason, L. W., and G. Taha. 2003. SAGE III aerosol extinction measurements: Initial results Geophysical Research Letters 30 (12): [10.1029/2003gl017317]

Taha, G., and G. P. Box. 2002. Water vapour column abundance retrieval using multispectral radiometer measurements in Sydney, Australia Australian Meteorological Magazine 51 (3):

Taha, G., and G. P. Box. 1999. New method for inferring total ozone and aerosol optical thickness from multispectral extinction measurements using eigenvalue analysis Geophysical Research Letters 26 (20): 3085-3088 [10.1029/1999gl010823]