Xiaoguang Xu
Aff Res Asst Prof
Joint Center for Earth Systems Technology
Physics
Goddard Earth Sciences Technology and Research (GESTAR) II
Physics 328
Education
Ph D University of Nebraska-Lincoln 2015
MS Lanzhou University 2008
BS Lanzhou University 2005
About
Xiaoguang Xu’s research area has focused on development of retrieval algorithms, data assimilation, and OSSEs for aerosol remote sensing data, with emphasis on the integration of satellite remote sensing and global models to characterize aerosol emitting sources, distributions, as well as their climate & environmental impacts. He has developed aerosol retrieval algorithms for both satellite and ground-based remote sensing platforms. He implemented the capability to use GEOS-Chem adjoint for inverse modeling of dust emissions from satellite radiances. Xu is the primary developer of a numerical testbed for remote sensing of aerosol known as UNL-VRTM (https://unl-vrtm.org). He currently leads the development of HARP2 level 1 data processing algorithm for NASA PACE satellite at UMBC.
Research Interests
Chemistry transport modeling; radiative transfer; satellite remote sensing of aerosols
Teaching Interests
Climate modeling; Physical meteorology; atmospheric physics and chemistry; Remote Sensing
Selected Classes
- Fall 2021 PHYS 335 – Physics and Chemistry of the Atmosphere
Contracts, Fellowships, Grants, and Sponsored Research
Xu, Xiaoguang (Principal). “Constraining Dust Refractive Index and Direct Radiative Effect in Long Wave Using Paired Sounder-Imager Sensors,” Grant (Not Funded). Sponsored By: NASA: TASNPP.
Xu, Xiaoguang (Principal). “Snapshot spectral imaging CubeSat for dense multi-angle measurements,” SubContract (Not Funded). Sponsored By: NASA: INVEST.
Xu, Xiaoguang (Co-Principal). “Sensitivity analysis and recovery of dust emissions from spectral climate signals,” Grant (Funded). Sponsored By: NASA: ACSCS, PI: Dr. Jun Wang. (Nov 1, 2014 – Oct 31, 2017).
Xu, Xiaoguang (Co-Principal). “Multi-phase inversion of aerosol sources using MODIS, MISR, OMI, and AERONET data and the GEOS-Chem adjoint,” SubContract (Funded). Sponsored By: NASA: ACMAP, PI: Dr. Daven Henze. (Feb 17, 2017 – Feb 16, 2020).
Xu, Xiaoguang (Principal). “Retrieval of Aerosol Vertical Distributions with Measurements from O2 A/B Bands and Polarimetric Data from Blue Bands: Algorithm Development and Synergistic Analysis,” Grant (Funded). Sponsored By: NASA: Remote Sensing Theory for Earth Science. (Oct 15, 2020 – Oct 14, 2023).
Xu, Xiaoguang (Principal), Smith, Rachel (Co-Principal), Sienkiewicz, Noah (Co-Principal). “Determining Atmospheric Aerosol Properties from the UMBC HARP CubeSat in Space,” Grant Sponsored By: UMBC. (Jun 1, 2021 – May 31, 2023).
Xu, Xiaoguang (Co-Principal), Wang, Jun (Principal). “EPIC Hourly Aerosol Optical Centroid Height (AOCH) product: mapping the diurnal variation of smoke and dust vertical distributions for air quality and climate studies,” Grant (Funded). Sponsored By: NASA. (Mar 9, 2022 – Mar 8, 2025).
Xu, Xiaoguang (Principal), Smith, Rachel (Supporting). “Model Development for Polarimetric Remote Sensing of Clouds in the Thermal Infrared,” Grant Sponsored By: UMBC CIDER. (Jun 1, 2023 – Jun 30, 2024).