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Saswati Das

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Address:

4800 Oak Grove Drive

M/S 233-200

Pasadena, CA 91109

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Curriculum Vitae:

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Member of:

Tropospheric Composition

Postdoctoral Researcher

Biography

Saswati is a postdoctoral fellow in the Tropospheric Composition Group. She supports activities related to the validation and scientific utilization of satellite measurements of carbon dioxide from the Orbiting Carbon Observatory (OCO) missions (OCO-2 and OCO-3) against independent ground-based measurements from the Total Carbon Column Observing Network (TCCON) and the COllaborative Carbon Column Observing Network (COCCON), and airborne measurements from the Atmospheric Tomography Mission (ATom).

Saswati Das graduated with a Ph.D. in Electrical Engineering from Virginia Tech in 2022. During her Ph.D., she worked on studying the chemistry and composition of the middle atmosphere. Broadly, her research involved validating satellite data measurements and studying Sudden Stratospheric Warming events and their impact on atmospheric composition. Saswati primarily worked with data from the Solar Occultation for Ice Experiment (SOFIE) instrument on the Aeronomy of Ice in the Mesosphere(AIM) spacecraft with comparative analysis using other satellite, model, and ground station datasets. During her Ph.D., she worked on a sounding rocket mission to study the vertical profile of nitric oxide during the polar night and a balloon-based instrument named GLO (GFCR (Gas Filter Correlation Radiometry) Limb Solar Occultation) developed for a mission concept that intends to quantify the role of the Upper Troposphere and Lower Stratosphere in climate change.

Education

  • PhD., Electrical Engineering, Virginia Tech (2022)
  • M.S., Electrical Engineering, Virginia Tech (2019)
  • B.Tech., Electronics and Telecommunication Engineering, KIIT University, India (2017)

Professional Experience

  • Jet Propulsion Laboratory - Postdoctoral Researcher (November 2022 - present)
  • Virginia Tech -
    • Graduate Research Assistant, Center for Space Science and Engineering Research (ECE Department) (Summer 2019 – Summer 2022)
    • Graduate Teaching Assistant, ECE Department (Spring 2019)
    • Graduate Research Assistant, Center for Space Science and Engineering Research (ECE Department) (Fall 2018)
    • Graduate Teaching Assistant, Physics Department (Spring 2018)
  • KIIT University, India - Undergraduate Researcher, Optics and Photonics (2015 – 2017)

Research Interests

  • Remote Sensing of the atmosphere.
  • Instrumentation for Remote Sensing.

Selected Awards

  • Best Seminar in Space Science Award, 2021-2022 Seminar Series – Center for Space Science and Engineering Research, Virginia Tech.

Selected Publications

Journal Publications​

  1. Das, Saswati, et al. " Version 1.3 AIM SOFIE measured ozone (O3): Validation and seasonal climatology. ", AGU Earth and Space Science: e2022EA002649
  2. Das, Saswati, et al. " Comparisons of the v11.1 Orbiting Carbon Observatory-2 (OCO-2) XCO2 measurements with GGG2020 TCCON. " (Under Review - AGU Earth and Space Science)
  3. Das, Saswati, et al. " Atomic oxygen in the mesopause region using SOFIE measurements." (Under Review – AGU Journal of Geophysical Research: Atmospheres)
  4. Das, Saswati, et al. " Validating the v11.2 XCO2 data product from OCO-2 and the v11 XCO2 data product from OCO-3 against the COllaborative Carbon Column Observing Network. " (in line for submission to AGU Earth and Space Science)
  5. Das, Saswati, et al. " Sudden stratospheric warming-triggered composition response of the mesosphere-lower thermosphere-stratosphere." (in line for submission to AGU Earth and Space Science)
  6. Bailey, Scott M., et al. "Sounding Rocket Observation of Nitric Oxide in the Polar Night.", Journal of Geophysical Research: Space Physics: e2021JA030257
  7. Roten, Dustin D., et al. “Constraining Sector-Specific CO2 Fluxes Using Space-Based XCO2 Observations Over the Los Angeles Basin”, AGU Geophysical Research Letters: e2023GL104376
  8. Sha, Mahesh K., et al. “Fiducial Reference Measurements for Greenhouse Gases (FRM4GHG): Validation of Satellite (Sentinel-5 Precursor, OCO-2 and GOSAT) Missions using COCCON.”, Remote Sens.10.3390/rs17050734

Conference Publications

  1. Kumar, Pranaw, Madhusmita Senapati, and Saswati Das. "Designing photonic crystal fiber for optical sensor and medical application and suitable for wavelength division multiplexing systems." 2016 10th International Conference on Intelligent Systems and Control (ISCO). IEEE, 2016.
  2. Kumar, Pranaw, Saswati Das, and Surender Singh. "Highly Birefringent with Low Dispersion Photonic Crystal Fiber doped with Crown glass for sensor and non-linear applications." 2016 International Conference on Innovations in Information Embedded and Communication Systems (ICIIECS).

Conference Presentations ​

  1. Das, Saswati, et al. “Evaluating Satellite-based XCO2 Measurements from v11.2 OCO-2 and v11 OCO-3 Against Ground-based Measurements from TCCON and COCCON, and Airborne Measurements from ATom”, 2025 21st International Workshop on Greenhouse Gas Measurements from Space (IWGGMS-21, Upcoming).
  2. Das, Saswati, et al. “Validating the XCO2 product from the Orbiting Carbon Observatory-2 against ground-based and airborne measurements”, 2025 ESA Living Planet Symposium (Upcoming).
  3. Das, Saswati, et al. “Evaluating Satellite-based XCO2 Measurements from OCO-2 Against Ground-based Measurements from COCCON and TCCON, and Airborne Measurements from ATom”, 2024 American Geophysical Union Conference.
  4. Das, Saswati, et al. “OCO – 2: The Journey of a Decade”, 2024 JPL Postdoc Research Day.
  5. Das, Saswati, et al. “Evaluating Satellite-based V11.1 OCO-2 XCO2 Measurements Against Ground-based TCCON and COCCON Measurements”, 2024 NDACC-IRWG-TCCON-COCCON Annual Meeting.
  6. Das, Saswati, et al. “Evaluating Satellite-based V11.1 OCO-2 XCO2 measurements against Ground-based COCCON and TCCON measurements”, 2024 20th International Workshop on Greenhouse Gas Measurements from Space (IWGGMS-20).
  7. Das, Saswati, et al. “Three ways to validate the XCO2 product from the Orbiting Carbon Observatory-2”, 2024 European Geosciences Union General Assembly.
  8. Das, Saswati, et al. “Evaluating Satellite-based XCO2 Measurements From OCO-2 and OCO-3 Against Ground-based TCCON and COCCON Measurements”, 2023 American Geophysical Union Conference.
  9. Das, Saswati, et al. “Evaluating global space-based XCO2 measurements from OCO-2 against the ground-based TCCON and COCCON networks”, 2023 Fall OCO-2/3 Science Team Meeting.
  10. Das, Saswati, et al. “Evaluating global space-based XCO2 measurements from OCO-2 against the ground-based TCCON network”, 2023 JPL Postdoc Research Day.
  11. Das, Saswati, et al. “Evaluating Satellite-based XCO2 measurements from OCO-2 against Ground-based TCCON and COCCON measurements”, 2023 19th International Workshop on Greenhouse Gas Measurements from Space (IWGGMS-19).
  12. Das, Saswati, et al. “Analysis of Satellite-based XCO2 measurements from OCO-2 against Ground-based TCCON and COCCON measurements”, 2023 NDACC-IRWG-TCCON-COCCON Annual Meeting.
  13. Das, Saswati, et al. “Evaluating satellite-based XCO2 measurements from OCO-2 against ground-based TCCON measurements”, 2023 Spring OCO-2/3 Science Team Meeting.
  14. Das, Saswati, et al. “Quantification and Evaluation of OCO-2 measured XCO2 against COCCON”, 2023 European Geosciences Union General Assembly.
  15. Kiel, Matthäus, et al. “Evaluation of the OCO-2 and OCO-3 ACOS data products against TCCON”, 2023 European Geosciences Union General Assembly.
  16. Das, Saswati, et al. “SMLT Ozone from SOFIE – Validation and Seasonal Climatology”, 2022 American Geophysical Union Conference.
  17. Das, Saswati, et al. “Investigation of the Southern Hemispheric Ozone Enhancements during the 2019 Sudden Stratospheric Warming”, 2022 American Geophysical Union Conference.
  18. Das, Saswati, et al. “SMLT Ozone from SOFIE and Other Instruments – Validation and Seasonal Climatology”, 2022 Coupling, Energetics, and Dynamics of Atmospheric Regions Workshop.
  19. Das, Saswati, et al. “Temporal Variation of Atomic Oxygen in the Upper Mesosphere from SOFIE”, 2022 Coupling, Energetics, and Dynamics of Atmospheric Regions Workshop.
  20. Das, Saswati, et al. “Sudden Stratospheric Warming-triggered composition response of the Stratosphere-Mesosphere-Lower Thermosphere from SOFIE and ACE.”, 2022 Coupling, Energetics, and Dynamics of Atmospheric Regions Workshop.
  21. Das, Saswati, et al. “Investigation of the Ozone Enhancement during the 2019 Sudden Stratospheric Warming in the Southern Hemisphere”, 2022 European Geosciences Union General Assembly.
  22. Das, Saswati, et al. “Enhancement in Antarctic Ozone During the 2019 Sudden Stratospheric Warming from SOFIE”, 2022 American Meteorological Society 102nd Annual Meeting.
  23. Das, Saswati, et al. “Composition Response of the Mesosphere-Lower Thermosphere-Stratosphere During 2019 Arctic Late-Winter”, 2022 American Meteorological Society 102nd Annual Meeting.
  24. Das, Saswati, et al. “Temporal Variation of Upper-Mesospheric Atomic Oxygen Using SOFIE Measurements”, 2021 American Geophysical Union Conference.
  25. Das, Saswati, et al. “Sudden Stratospheric Warming-Triggered Composition Response of the Mesosphere-Lower Thermosphere- Stratosphere”, 2021 American Geophysical Union Conference.
  26. Das, Saswati, et al. “A Multi Tracer Analysis to Study the Chemical Composition Changes associated with the 2019 Sudden Stratospheric Warming Dynamics using SOFIE Observations”, 2021 Coupling, Energetics, and Dynamics of Atmospheric Regions Workshop.
  27. Das, Saswati, et al. “Exploring the Spatial and Temporal Structure of Ozone in the Mesosphere and Lower Thermosphere: An Investigation of the Sudden Stratospheric Warming Events of 2009 – 2013”, 2020 American Geophysical Union Conference.
  28. Bailey, Scott M, et al. “Sounding Rocket Observation of Lower Thermospheric Nitric Oxide in the Polar Night”, 2020 American Geophysical Union Conference.

Projects

OCO-2 - Orbiting Carbon Observatory
OCO-3 - Orbiting Carbon Observatory 3