Shashank Bhushan
(ASSISTANT RESEARCH SCIENTIST)
| Email: | shashank.bhushan@nasa.gov |
| Org Code: | 618 |
| Address: |
NASA/GSFC Mail Code 618 Greenbelt, MD 20771 |
| Employer: | UNIV OF MARYLAND COLLEGE PARK |
Brief Bio
Dr. Shashank Bhushan is an Assistant Research Scientist at the University of Maryland’s Earth System Science Interdisciplinary Center (ESSIC) and NASA Goddard's Biospheric Sciences Laboratory. His research focuses on advancing remote sensing techniques to study the Earth's cryosphere, biosphere, and mountain hazards.
Shashank’s journey in remote sensing began with mountain glaciology research during his undergraduate studies. In graduate school, he developed photogrammetry workflows to derive accurate geodetic products using electro-optical commercial satellite data (Planet Labs, Maxar). He leveraged these new observations to understand surface and climatic processes controlling the mass balance of debris-covered glaciers in High-Mountain Asia. During his postdoctoral training, he initiated the development of optical stereo and lidar fusion algorithms to produce high-resolution, decimeter accuracy geodetic measurements as part of the NASA DSI STV team.
At NASA Goddard, Shashank aims to continue leading new research in photogrammetry and glacier change measurement while expanding his expertise in applying satellite observations to study biosphere, ice sheets, hydrology and other Earth System processes. In addition to research, he is passionate about developing open-source data science tools, creating accessible tutorials, and fostering collaborative academic communities.
Research Interests
Multi-sensor geolocation correction and topography retrieval algorithm development
Earth Science: Remote SensingSatellite remote sensing of shallow water bathymetry
Earth Science: Hydrology / Water CycleCurrent Projects
Satellite stereo-lidar fusion for STV bathymetry and coastal topography
Remote Sensing
NASA ROSES DSI-24
Role: Co-PI
Expanding and Maintaining the Ames Stereo Pipeline
Remote Sensing
NASA ROSES OSTFL-2024
Role: Co-I
Mining data archives to identify coincident satellite and airborne stereo+lidar acquisitions and developing cloud-friendly workflows to prepare co-registered, analysis-ready data for the STV Community
Remote Sensing
Role: Co-I
Positions/Employment
Assistant Research Scientist
ESSIC/UMD and NASA GSFC - Greenbelt, MD
October 2024 - Present
Photogrammetry Intern
Planet Labs - San Francisco, CA
June 2020 - September 2020
Postdoctoral Scholar
University of Washington - Seattle, WA
August 2023 - September 2024
Teaching Experience
I have developed and delivered the following guest lectures:
- "Introduction to Photogrammetry" for undergraduate level CEE 347: GeoSurveying course at University of Washington, 2021
- "Photogrammetry from commercial satellite imagery and application to Earth Surveying" for graduate level CEN 612: Advanced Digital Image Processing course at Indian Institute of Technology Roorkee, 2022
I am currently developing open-source, interactive tutorials on photogrammetry and image processing using the GitHub code space platform
Education
- Ph.D. in Civil and Environmental Engineering, University of Washington, Seattle, WA, 2023
- MSc. (Tech.) in Applied Geology through the 5-Year Integrated course (equivalent to BS+MS), Indian Institute of Technology (ISM) Dhanbad, 2018
Professional Societies
American Geophysical Union
2017 - Present
Professional Service
- NASA ROSES proposal review panel, May 2025, February 2024
- Peer-reviewer for research manuscripts submitted to: Journal of Glaciology, Water Resource Research, Remote Sensing, Geophysical Research Letters, ISPRS Journal of Photogrammetry and Remote Sensing, Earth Surface Dynamics, Earth and Space Science, Earth System Science Data
- Co-organized a session on Mental Health in GeoScience at UW & NASA Earth Science Hackweek, 2024
- Co-host of UW eScience Postdoc Lunch Seminar Series, academic year 2023-24.
- Served as Data Science Helper for the 2023 ICESat-2 Hackweek. Served as team lead and data science lead for multiple projects at University of Washington eScience Hackweeks
- Member of STV cryosphere, stereo, lidar, and data fusion working groups
- Member of the 2023 NorthWest Glaciologists Meeting organizing committee: developed the event website and assisted the scheduling and event logistics team
Awards
- University of Washington Data Science Postdoctoral Fellowship by the UW eScience Institute, 2023
- Grove Karl Gilbert Award for Excellence in Geomorphological Research by American Association of Geographers. Recognition for Shugar et al. (2021) Science paper on Chamoli disaster, 2022
- NASA Future Investigators in NASA Earth and Space Science and Technology, 2019-2022
- UW Top 1% Merit-Graduate/Fee Exempt Waiver by the University of Washington Graduate School, 2019-2022
- AGU Student Travel Grant to attend the 2017 AGU Fall Meeting, AGU Student Endowment Fund, 2017
- SN Bose Fellowship by the Indo-US Science and Technology Forum to conduct research internship at the University of Washington, Seattle, 2017.
- AAPG L. Austin Weeks Undergraduate Grant, 2016 and 2017
- Travel Grant to attend the 78th EAGE Conference and Exhibition, EAGE Student Fund, 2016
- IAS SRFP Summer Research Fellowship, Indian Academy of Sciences, 2015
- Scholarship for Higher Education (SHE)-INSPIRE from DST, Govt. of India, 2013-2018
Special Experience
Selected Open-source Code
- lidar_tools: Tools to process airborne and satellite LiDAR point clouds
- asp_tutorials: Interactive tutorials for the NASA Ames Stereo Pipeline
- skysat_stereo: Tools and libraries for processing Planet SkySat imagery, including camera model refinement, stereo reconstruction, and orthomosaic production
- debris_cover_smb: Tools and notebooks for computing surface mass balance over debris-covered glaciers from remote sensing products
- fetch_dem: Command line tool to request, download and process Global DEMs
- GLAFT: GLAcier Feature Tracking testkit (GLAFT): evaluating glacier velocity products derived from feature tracking. (Lead author: Dr. Whyzay Zheng)
- declass_stereo: Scripts and documentation for processing declassified spy satellite images from Corona and Hexagon with the Ames Stereo Pipeline
Selected Open Data
- Bhushan, S., Shean, D., Hu, J. M., Guillet, G. & Rounce, D. (2024). High Mountain Asia 2 m DEM, Surface Velocity, and Lagrangian Surface Mass Balance for Select Debris Covered Glaciers. (HMA2_DCG_SMB, Version 1). [Data Set]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/DARPX4AR2OYO
- Shean, D., Bhushan, S., Berthier, E., Deschamps-Berger C., Gascoin, S., & Knuth, F. (2021). Chamoli Disaster Post-event 2-m DEM Composite (February 10-11, 2021) and Difference Map (1.0) [Data Set]. Zenodo. https://doi.org/10.5281/zenodo.4558692
- Bhushan, S. & Shean, D. (2021). Chamoli Pre-event 2-m DEM Composite: September 2015 (1.0) [Data Set]. Zenodo. https://doi.org/10.5281/zenodo.4554647
Selected Publications
Refereed
2026. "Satellite data synergy for volcano monitoring: The 2022 Mauna Loa eruption.", Journal of Volcanology and Geothermal Research, 108603 [10.1016/j.jvolgeores.2026.108603] [Journal Article/Letter]
2025. "Evaluating the effect of image resolution and stereo acquisition geometry on DEM quality.", IGARSS 2025 - 2025 IEEE International Geoscience and Remote Sensing Symposium, 1418-1422 [10.1109/igarss55030.2025.11243225] [Proceedings]
2025. "Advances in Spaceborne LiDAR and Stereo Photogrammetry Modeling for Improved Digital Surface Model Generation.", IGARSS 2025 - 2025 IEEE International Geoscience and Remote Sensing Symposium, 3722-3726 [10.1109/igarss55030.2025.11242948] [Proceedings]
2024. "Deriving seasonal and annual surface mass balance for debris-covered glaciers from flow-corrected satellite stereo DEM time series.", Journal of Glaciology, 1-21 [10.1017/jog.2024.57] [Journal Article/Letter]
2024. "Spaceborne Lidar and Stereogrammetry Data Fusion to Predict Aboveground Biomass in Tropical Forests.", IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium, 3592-3595 [10.1109/igarss53475.2024.10641914] [Proceedings]
2023. "Six Consecutive Seasons of High‐Resolution Mountain Snow Depth Maps From Satellite Stereo Imagery.", Geophysical Research Letters, 50 (24): [10.1029/2023gl104871] [Journal Article/Letter]
2023. "icepyx: querying, obtaining, analyzing, and manipulating ICESat-2 datasets.", Journal of Open Source Software, 8 (84): 4912 [10.21105/joss.04912] [Journal Article/Letter]
2023. "GLAcier Feature Tracking testkit (GLAFT): A statistically- and physically-based framework for evaluating glacier velocity products derived from satellite image feature tracking.", The Cryosphere, [10.5194/tc-2023-38] [Journal Article/Letter]
2023. "Historical Structure from Motion (HSfM): Automated processing of historical aerial photographs for long-term topographic change analysis.", Remote Sensing of Environment, 285 113379 [10.1016/j.rse.2022.113379] [Journal Article/Letter]
2022. "Pre-collapse motion of the February 2021 Chamoli rock–ice avalanche, Indian Himalaya.", Natural Hazards and Earth System Sciences, 22 (10): 3309-3327 [10.5194/nhess-22-3309-2022] [Journal Article/Letter]
2021. "A massive rock and ice avalanche caused the 2021 disaster at Chamoli, Indian Himalaya.", Science, 373 (6552): 300-306 [10.1126/science.abh4455] [Journal Article/Letter]
2021. "Automated digital elevation model (DEM) generation from very-high-resolution Planet SkySat triplet stereo and video imagery.", ISPRS Journal of Photogrammetry and Remote Sensing, 173 151-165 [10.1016/j.isprsjprs.2020.12.012] [Journal Article/Letter]
2020. "A Systematic, Regional Assessment of High Mountain Asia Glacier Mass Balance.", Frontiers in Earth Science, 7 [10.3389/feart.2019.00363] [Journal Article/Letter]
2018. "Assessing controls on mass budget and surface velocity variations of glaciers in Western Himalaya.", Scientific Reports, 8 (1): 8885 [10.1038/s41598-018-27014-y] [Journal Article/Letter]
2017. "Quantifying Changes in the Gangotri Glacier of Central Himalaya: Evidence for Increasing Mass Loss and Decreasing Velocity.", IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 10 (12): 5295-5306 [10.1109/jstars.2017.2771215] [Journal Article/Letter]
Talks, Presentations and Posters
Other
NASA STV Precursor Coincident Datasets: Open-source tools and analysis-ready data for contemporaneous, co-registered satellite and airborne elevation measurements
December 18, 2025
AGU Fall Meeting, New Orleans, USA.
Generating decimeter precision DEMs from commercial VHR stereo imagery using a novel jitter correction framework
October 13, 2025
2025 American Society of Photogrammetry & Remote Sensing (ASPRS) International Technical Symposium
NASA Surface Topography & Vegetation (STV) Precursor Coincident Datasets (PCD)
September 30, 2025
SilviLaser 2025, Québec City, Canada
Evaluating the effect of image resolution and stereo acquisition geometry on DEM quality
August 7, 2025
IEEE IGARSS, Brisbane, Australia, 2025
April 11, 2025
Joint Agency Commercial Imagery Evaluation Workshop, USGS Headquarters, Reston, Virginia