Overview
Work History
Education
Skills
Hobbies and Interests
Awards
Publications
Research profile
Research Impacts
Invited Talks
Academic Service
Languages
Summary
Timeline
Generic
Sanath Kumar Sathyachandran

Sanath Kumar Sathyachandran

Bridgeville,USA

Overview

18
18
years of professional experience

Work History

Physical scientist

Lynker
01.2023 - Current
  • Physical scientist at Lynker, contractor to NOAA, in support of short term fire-weather numerical modelling and prediction. Collated and created a streamlined process to generate ocean-land coupled grids for operational use in the Unified Forecast Systems. Leading research efforts for assimilation of newer satellite data into the Noah MP land surface model. Added capability to ingest high resolution dynamic land surface properties into the UFS model.

Senior research scientist

ASRC FDS
01.2018 - 01.2023
  • Senior research scientist at ASRC FDS, science contractor to USGS EROS, in support for the LANDFIRE program. Led research efforts for operational mapping of vegetation disturbances over the United States.

Postdoctoral research associate

New Mexico State University
01.2017 - 01.2018
  • Postdoctoral research associate (New Mexico State University) in savanna lab. Tasked with ecological hypothesis testing using large continental-scale data and physically based model processes. Researched bistabilities and feedbacks governing tree/grass mixtures in African savannah, across and over spatiotemporal domains. Developed field protocols on the use of drones for high resolution mapping.

Postdoctoral research fellow

South Dakota State University
01.2014 - 01.2017
  • Postdoctoral research fellow (South Dakota State University). Developed a global active fire detection and burned fraction retrieval algorithm using moderate resolution Landsat-8 and Sentinel 2A reflectance data. The algorithms were developed using physical/semi-empirical models that generated synthetic data to train machine learning approaches.

Graduate research assistant

South Dakota State University
01.2008 - 01.2014
  • Graduate research assistant (South Dakota State University). Research towards development of remote sensing methodologies to classify MODerate resolution Imaging Spectroradiometer (MODIS) satellite active fire detections as deforestation fires, forest fires, or maintenance fires over the Brazilian Tropical Moist Forest Biome (BTMFB). A random forest classifier was used to classify MODIS active fire detections using a suite of biophysical and environmental variables.

Education

Ph.D. - Geospatial Sciences and Engineering

South Dakota State University
01.2014

M.S. - Space Studies

University of North Dakota
01.2007

M.Sc. - Physics (Honors)

University of Delhi
01.1997

B.Sc. - Physics (Honors)

University of Delhi
01.1994

Skills

  • Computing: Over 17 years of experience in using HPC for data mining, analysis and prototyping algorithms C/C, R, MATLAB, Python, FORTRAN & Cloud computing, Git
  • GIS: R, ERIDAS, ArcGIS & ENVI/IDL
  • Aviation: Private pilot single engine land, glider & unmanned aircraft systems (UAS)

Hobbies and Interests

Numerical modelling, remote sensing, machine learning, teaching and outreach

Awards

Lynker 2023 Business development award, Lynker 2024 CEO award, LANDFIRE 2017 Department of the Interior Environmental Achievement team award, NASA Earth and Space Science Fellowship (NESSF) 2010-2013, for my PhD proposal

Publications

  • Kumar, S. S., Tolk, B., Dittmeier, R., Picotte, J. J., La Puma, I., Peterson, B., & Hatten, T. D. (2024). The Spatially Adaptable Filter for Error Reduction (SAFER) Process: Remote Sensing-Based LANDFIRE Disturbance Mapping Updates. Fire, 7(2), 51.
  • Kumar, S. S., Prihodko, L., Lind, B. M., Anchang, J., Ji, W., Ross, C. W., ... & Hanan, N. P. (2020). Remotely sensed thermal decay rate: an index for vegetation monitoring. Scientific Reports, 10(1), 1-11.
  • Kumar, S. S., & Roy, D. P. (2018). Global operational land imager Landsat-8 reflectance-based active fire detection algorithm. International Journal of Digital Earth, 11(2), 154-178
  • Kumar, S. S., Roy, D. P., Boschetti, L., & Kremens, R. (2011). Exploiting the power law distribution properties of satellite fire radiative power retrievals: A method to estimate fire radiative energy and biomass burned from sparse satellite observations. Journal of Geophysical Research: Atmospheres, 116(D19).
  • Kumar, S. S., Barlage, M., Zheng, W., Wei H., Gayno, G., Yang, F. Using Observed Spatially Varying Leaf Area Index to Drive NOAA UFS Land Model. In AGU Fall Meeting 2024
  • Anchang J, Kumar , S. S., Prihodko, L., Kahiu , N , N., Geli, H, M, E., Hanan N. P.,. Improving Pre-Fire Analysis in the US Southwest: Satellite Measured Thermal Decay Rate (Rak) as an Indicator of Canopy Moisture Variability, Stress, and Fuel Cure. In AGU Fall Meeting 2024
  • Kumar, S. S., Tolk, B., La Puma, I.P., and Hatten, T. Vegetation Disturbance Mapping Accuracies of the LANDFIRE Program Over the CONUS for 2013 – 2017. In AGU Fall Meeting 2022.
  • Tilley, J. S., Bower, K. A., Kumar, S. S., Kucera, P. A., & Askelson, M. A.. On the Utility of a Modest Physics-Based High-Resolution WRF Ensemble for Hurricane Prediction: Hurricane Ivan as an Example. In AGU Spring Meeting 2005.

Research profile

Google Scholar | ORCID | RESEARCHGATE | PUBLONS | GITHUB

Research Impacts

  • Developed a streamlined process to generate ocean-land coupled grids for operational use in the NOAA EMC Unified Forecast Systems (UFS). Added critical ability to ingest new satellite derived land surface parameters into the model (Kumar, S.S.,2024).
  • Developed the Spatially Adaptable Filter for Error Reduction (SAFER) algorithm (Kumar et al., 2024). It is currently the operational algorithm deployed in the United States Geological Survey's HPC environment to generate the LANDFIRE disturbance (2017 onwards) product suite.
  • Developed a new index for monitoring vegetation using satellite observed thermal data (Kumar et al., 2020).
  • Developed the first globally applicable algorithm (Kumar et al., 2018) for active fire detection using Landsat class reflectance data.
  • Developed statistical models to compensate for the observed underestimation of satellite derived fire radiative power (Kumar et al., 2011)

Invited Talks

  • Satellite based active fire characterization. In forum for contemporary Geographic Issues 2023 online webinar for University of North Dakota, Geography and Geographic Information Science. April 19 2023.
  • A Random Forest-Based Commission Error Filter for LANDFIRE Disturbance Mapping. In Full Speed Ahead: Increasing frequency and reducing latency of national-scale maps. Pecora 2022, Denver, Colorado
  • Remote sensing of wildfires: A regional and global analysis. In Long Term Ecological Research (LTER) symposium 20th September 2017 Wotton hall, NMSU, New Mexico.
  • The Global Operational Land Imager (GOLI) Landsat 8 reflectance based active fire detection algorithm. In summer 2016 Landsat Science Team Meeting was held at the South Dakota State University, South Dakota.

Academic Service

  • Special edition editor
  • “Advances in Characterizing and Monitoring Land Cover/Use and Associated Ecosystem Changes Using Remote Sensing Data” Frontiers in Environmental Science
  • Session convener (AGU & Pecora)
  • Remote Sensing of Fire Processes and Biomass Burning (BB) Emissions (2021 & 2022)
  • Advances in Characterizing and Monitoring Land Cover/Use and Associated Ecosystem Changes Using Remote Sensing Data (2021 & 2022)
  • Technical Session 7-2: Fire Detection, Monitoring, and Remediation (2022)
  • Technical Session 8-2: Floods, Weather Events and Other Hazards (2022)
  • Public outreach
  • Amateur astronomy and amateur radio popularization in my local communities
  • Conducted several telescope making workshops in India
  • Volunteer subject matter expert and mentor for NASA Space App challenge

Languages

Hindi
Native or Bilingual
Tamil
Native or Bilingual

Summary

Interdisciplinary scientist with diverse and deep research to product development experience. I have developed classical and machine learning based algorithms to derive environmental and biophysical variables, and remote sensing solutions to monitor and address environmental issues.

Timeline

Physical scientist

Lynker
01.2023 - Current

Senior research scientist

ASRC FDS
01.2018 - 01.2023

Postdoctoral research associate

New Mexico State University
01.2017 - 01.2018

Postdoctoral research fellow

South Dakota State University
01.2014 - 01.2017

Graduate research assistant

South Dakota State University
01.2008 - 01.2014

M.S. - Space Studies

University of North Dakota

M.Sc. - Physics (Honors)

University of Delhi

B.Sc. - Physics (Honors)

University of Delhi

Ph.D. - Geospatial Sciences and Engineering

South Dakota State University