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Explore how CCS is redefining the fight against climate change through bold innovation and impactful research. With sustainability at our core, we bring together a community of visionary thinkers and collaborators dedicated to building a resilient, thriving future for our planet.
Associate Faculty
Karthikeyan Lanka
Associate Professor
Our Ecohydrology Group at IIT Bombay works on four key areas 1) microwave remote sensing of soil moisture and vegetation, 2) soil-vegetation-atmosphere interactions, 3) modeling and prediction of droughts and heatwaves, and 4) hyper-resolution land surface modeling. The unifying element of all these areas is ‘soil moisture’, which quantifies the water content in the soil. The research carried out by the group has significance in the context of agriculture, extreme events, and early warning systems in India.
Research Interests
karthikl@iitb.ac.in
022-257-67665
1st Floor, CSRE
Education
Ph.D.
Civil Engineering, Indian Institute of Science Bangalore
M.Sc.(Engg.)
Civil Engineering, Indian Institute of Science Bangalore
B.Tech.
Civil Engineering, SASTRA University
Publications
Journal Articles
- Konkathi, P., & Karthikeyan, L. (2025). Dynamic vegetation parameter retrieval algorithm for SMAP L-band radiometer observations. Remote Sensing of Environment, 319, 114641.
- Aryalakshmi, M., Indu, J., & Karthikeyan, L. (2025). Resilience to Forest Fires: An Indicator-Based Study in a Tropical Forest of Uttarakhand, India. IEEE Geoscience and Remote Sensing Letters
- Paul, S., Feldman, A. F., & Karthikeyan, L. (2024). Are rootzone soil moisture dynamics and thresholds associated with surface layer?. Environmental Research Letters, 20, 014037.
- Krishnan, V. U., Vergopolan, N., Singh, B. B., Indu, J., & Karthikeyan, L. (2024). Hyper-Resolution Land Surface Modeling for Farm-Scale Soil Moisture in India: Enhancing Simulations with Soil Vertical Heterogeneity. Hydrology and Earth System Sciences Discussions, 2024, 1-36.
- Khandare, A., Murtugudde, R., Karthikeyan, L., & Ghosh, S. (2024). Hysteresis in seasonal land-atmospheric interactions over India and its characteristics across croplands and forests. Environmental Research Letters, 19(12), 124043
- Gupta, A., & Karthikeyan, L. (2024). Role of initial conditions and meteorological drought in soil moisture drought propagation: An event‐based causal analysis over South Asia. Earth's Future, 12(10), e2024EF004674.
- Sreevalsan-Nair, J., Kiran, A., Bhattacharya, A., Sagar, B. D., Gurudatta, K. N., Verma, U., … & Karthikeyan, L. (2024). InGARSS 2023 in Bangalore: Striking a Balance [Conference Reports]. IEEE Geoscience and Remote Sensing Magazine, 12(3), 180-187.
- Navale, A., & Karthikeyan, L. (2024). Understanding tropical cyclone persistence over land: a case study of cyclone Gulab. Environmental Research Letters, 19(11), 114061. (IF: 5.8)
- Xing, Z., Li, X., Fan, L., Frappart, F., Kim, H., Karthikeyan, L., … & Wigneron, J. P. (2024). Seasonal-scale intercomparison of SMAP and fused SMOS-SMAP soil moisture products. Frontiers in Remote Sensing, 5, 1440891.
- Karthikeyan, L., Bhattacharya, A., Judge, J., & Yueh, S. (2023). The Second International Soil Moisture School [Conference Reports]. IEEE Geoscience and Remote Sensing Magazine, 11, 4, 157-162.
- Konkathi, P., & Karthikeyan, L. (2023). Utility of L-band and X-band vegetation optical depth to examine vegetation response to soil moisture droughts in South Asia. Remote Sensing of Environment, 301, 113933.
- Navale, A., & Karthikeyan, L. (2023). Soil Moisture-Precipitation Feedbacks in Pre- and Post-monsoon Landfalling Tropical Cyclones in Bay of Bengal. Quarterly Journal of Royal Meteorological Society, 149, 755.
- Navale, A., & Karthikeyan, L. (2022). Understanding recycled precipitation at different spatio-temporal scales over India: An Eulerian water tagging approach. Water Resources Research, 59, e2022WR032605.
- Konkathi, P., & Karthikeyan, L. (2022). Error and uncertainty characterization of soil moisture and VOD retrievals obtained from L-band SMAP radiometer. Remote Sensing of Environment, 280, 113146.
- Bhogapurapu, N., Dey, S., Mandal, D., Bhattacharya, A., Karthikeyan, L., McNairn, H., & Rao, Y. S. (2022). Soil moisture retrieval over croplands using dual-pol L-band GRD SAR data. Remote Sensing of Environment, 271, 112900.
- Karthikeyan, L., & Mishra, A. K. (2021). Multi-layer high-resolution soil moisture estimation using machine learning over the United States. Remote Sensing of Environment, 266, 112706.
- Beck, H. E., Pan, M., Miralles, D. G., Reichle, R. H., Dorigo, W. A., Hahn, S., Sheffield, J., Karthikeyan, L., Balsamo, G., Parinussa, R. M., Van Dijk, A. I., Du, J., Kimball, J. S., Vergopolan, N., Wood, E. F. (2021). Evaluation of 18 satellite-and model-based soil moisture products using in situ measurements from 826 sensors. Hydrology and Earth System Sciences, 25(1), 17-40.
- Karthikeyan, L., Chawla, I., & Mishra, A. K. (2020). A review of remote sensing applications in agriculture for food security: Crop growth and yield, irrigation, and crop losses. Journal of Hydrology, 586, 124905.
- Chawla, I., Karthikeyan, L., & Mishra, A. K. (2020). A review of remote sensing applications for water security: Quantity, quality, 585, 124826. Journal of Hydrology, 585, 124826.
- Karthikeyan, L., Pan, M., Nagesh Kumar, D., & Wood, E. F. (2020). Effect of Structural Uncertainty in Passive Microwave Soil Moisture Retrieval Algorithm. Sensors, 20(4), 1225.
- Karthikeyan, L., Pan, M., Konings, A. G., Piles, M., Fernandez-Moran, R., Nagesh Kumar, D., & Wood, E. F. (2019). Simultaneous retrieval of global scale Vegetation Optical Depth, surface roughness, and soil moisture using X-band AMSR-E observations. Remote Sensing of Environment, 234, 111473.
- Karthikeyan, L., Pan, M., Wanders, N., Nagesh Kumar, D., & Wood, E. F. (2017). Four decades of microwave satellite soil moisture observations: Part 2. Product validation and inter-satellite comparisons. Advances in Water Resources, 109, 236-252.
- Karthikeyan, L., Pan, M., Wanders, N., Nagesh Kumar, D., & Wood, E. F. (2017). Four decades of microwave satellite soil moisture observations: Part 1. A review of retrieval algorithms. Advances in Water Resources, 109, 106-120.
- Karthikeyan, L., & Nagesh Kumar, D. (2016). A novel approach to validate satellite soil moisture retrievals using precipitation data. Journal of Geophysical Research Atmospheres, 121(19), 11-516.
- Karthikeyan, L., & Nagesh Kumar, D. (2013). Predictability of nonstationary time series using wavelet and EMD based ARMA models. Journal of Hydrology, 502, 103-119.
- Karthikeyan, L., Nagesh Kumar, D., Graillot, D., & Gaur, S. (2013). Prediction of ground water levels in the uplands of a tropical coastal riparian wetland using artificial neural networks. Water Resources Management, 27(3), 871-883.
Books/ Reports
Preprints/ Others
