Publications

Journal Articles

1. 1. Sara, K. and Rajasekaran, E. (2025), High Spatiotemporal Resolution Land Surface Temperature reveals fine-scale hotspots during heatwave events over India, Environmental Research Communications, 7(3), DOI: 10.1088/2515-7620/adc0f2 

1. 2. Romshoo, M. U., Harod, R. and Rajasekaran, E. (2024), Variation in the Surface Urban Heat Island Effect over Srinagar city in Summer and Winter Seasons, Proceedings of the Indian National Science Academy, DOI: 10.1007/s43538-024-00385-9

1. 3. Pandey, V., Harde, S., Rajasekaran, E., Deb Burman, P.K. (2024), Gross Primary Productivity of Terrestrial ecosystems: a review of observations, remote sensing, and Modelling studies over South Asia, Theoretical and Applied Climatology, 155, 8461-8491, DOI: 10.1007/s00704-024-05158-4

1. 4. Harod, R. and Rajasekaran, E. (2024), All Weather Land Surface Temperature Estimation by Combining Thermal Infrared and Passive Microwave Radiometry: A Study over India, International Journal of Remote Sensing, 45(18), 6691–6718, DOI: 10.1080/01431161.2024.2394232

1. 5. Roy, A., Rajasekaran, E., Harod, R. and Gnanappazham, L. (2024), Land Surface Temperature Anomalies as Indicators of Urban Land Cover Change—A Study of Two Indian Cities, Earth Science, Systems and Society, 4, 10096, DOI: 10.3389/esss.2024.10096

1. 6. Munusamy, S., Rajasekaran, E., Saraswat, D. et al. (2024), The utility and applicability of vegetation index-based models for the spatial disaggregation of evapotranspiration. Irrigation Science, DOI: 10.1007/s00271-024-00963-1

1. 7. Sara, K., Rajasekaran, E., Nigam, R. et al. (2024), Combining Spatial Downscaling Techniques and Diurnal Temperature Cycle Modelling to Estimate Diurnal Patterns of Land Surface Temperature at Field Scale. PFG – Journal of Photogrammetry, Remote Sensing and Geoinformation Science, 92, 723–740, DOI: 10.1007/s41064-024-00291-1

1. 8. Pandey, V., Srivastava, P. K., Das, P., Behera, M. D., and Rajasekaran, E. (2024). Hydrological modelling for post-monsoon agricultural drought assessment and implications for the agro-economy, Hydrological Sciences Journal, 69(7), 923–938. DOI: 10.1080/02626667.2024.2347981

1. 9. Athira, K.V., Eswar, R., Boulet, G., Nigam, R. and Bhattacharya, B.K. (2022), Modeling Evapotranspiration at Larger Temporal Scales: Effects of Temporal Aggregation and Data Gaps, Remote Sensing, 14, 4142, doi: 10.3390/rs14174142

1. 10. Jain, A., Eswar, R. and Bhattacharya, B. K. (2022), Validation and bias correction of incoming solar radiation from two reanalysis products over India, Journal of Earth System Science, 131, 127, DOI: 10.1007/s12040-022-01873-6

1. 11. Likith, M., Harod, R. and Eswar, R. (2022), Exploring the use of satellite observations of soil moisture, solar-induced chlorophyll fluorescence and vegetation optical depth to monitor droughts over India, Journal of Earth System Science, 131, 94, DOI: 10.1007/s12040-022-01848-7

1. 12. Sara, Kukku, Eswar, R. and Bhattacharya, B. K. (2022), The Utility of Simpler Spatial Disaggregation Models for Retrieving Land Surface Temperature at High Spatiotemporal Resolutions, IEEE Geoscience and Remote Sensing Letters, 19, 1–5, DOI: 10.1109/LGRS.2021.3105873

1. 13. Harod, R., Eswar, R. and Bhattacharya, B. K. (2021), Effect of surface emissivity and retrieval algorithms on the accuracy of Land Surface Temperature retrieved from Landsat data, Remote Sensing Letters, 12:10, 983-993, DOI: 10.1080/2150704X.2021.1957511

1. 14. Choudhury, I., Bhattacharya, B.K., Eswar, R. and Sekhar, M. (2021), Decadal gross level assessment of green and blue consumptive water use over Indian agro-ecosystems, International Journal of Remote Sensing, 42(17), 6628-6669, DOI: 10.1080/01431161.2021.1939905

1. 15. Shukla, A., Jain, K., Ramsankaran, R. and Rajasekaran, E. (2021), Understanding the macro-micro dynamics of urban densification: A case study of different sized Indian cities, Land Use Policy, 107, 105469, DOI: 10.1016/j.landusepol.2021.105469

1. 16. Kodimalar, T., Vidhya, R. and Eswar, R. (2020), Land surface emissivity retrieval from multiple vegetation indices: a comparative study over India, Remote Sensing Letters, 11(2), 176–185, doi: 10.1080/2150704X.2019.1692384

1. 17. Eswar, R., Das, N.N., Poulsen, C., Behrangi, A., Swigart, J., Svoboda, M., Entekhabi, D., Yueh, S., Doorn, B. and Entin, J. (2018), SMAP Soil Moisture Change as an Indicator of Drought Conditions, Remote Sensing, 10, 788, doi: 10.3390/rs10050788

1. 18. Eswar, R., Sekhar M., Bhattacharya, B.K. (2017), Comparison of three remote sensing based models for the estimation of latent heat flux over India, Hydrological Sciences Journal, 62(16), 2705–2719, doi: 10.1080/02626667.2017.1404067

1. 19. Eswar, R., Sekhar M., Bhattacharya, B.K. and Bandyopadhyay, S. (2017), Spatial disaggregation of latent heat flux using contextual models over India, Remote Sensing, 9, 949, doi: 10.3390/rs9090949

1. 20. Eswar, R., Sekhar M. and Bhattacharya, B.K. (2016), Disaggregation of LST over India: Comparative analysis of different vegetation indices, International Journal of Remote Sensing, 37(5), 1035–1054, doi: 10.1080/01431161.2016.1145363

1. 21. Eswar, R., Sekhar M. and Bhattacharya, B.K. (2013), A simple model for spatial disaggregation of evaporative fraction: Comparative study with thermal sharpened land surface temperature data over India, Journal of Geophysical Research-Atmospheres, 118, 12,029–12,044, doi: 10.1002/2013JD020813.

Book Chapter

Roy, A., Sathyakumar, V and Rajasekaran, E., (2025), Assessing the Impact of Surface Urban Heat Island on Urban Neighbourhoods - A Geospatial Analysis for Climate Justice in Mumbai, Chapter in Mohan, S., Munoth, N. and Sharma, N (Eds.), Smart Buildings and Cities with Remote Sensing and GIS, Chapter 12, 205-218, CRC Press, ISBN 9781032586113

Refereed Conference Proceedings

1. 1. Sara, K. and Rajasekaran, E. (2023), Analysing the diurnal evolution of land surface temperature during heat wave event at high spatial resolution, 2023 IEEE India Geoscience and Remote Sensing Conference, 10-13 December 2023, Bangalore, DOI: 10.1109/InGARSS59135.2023.10490322

1. 2. Anand, A., Somisetty, E., Rajasekaran, E. and Deb, C. (2023) Application of an urban building energy modelling framework to study the effects of urban heat island in an Indian city, in Rajagopalan, P., Soebarto, V., and Akbari, H. (Eds.). Proceedings of 6th International Conference on Countermeasures to Urban Heat Islands (IC2UHI): Holistic approaches to address urban heat islands, 4-7 December 2023, RMIT University, Melbourne, Australia.

1. 3. Roy, A., Harod, R. and Rajasekaran, E., (2023), Long Term monitoring of urban conditions over Navi Mumbai from thermal infrared remote sensing, in Rajagopalan, P., Soebarto, V., and Akbari, H. (Eds.). Proceedings of 6th International Conference on Countermeasures to Urban Heat Islands (IC2UHI): Holistic approaches to address urban heat islands, 4-7 December 2023, RMIT University, Melbourne, Australia.

   4. Roy, A., Harod, R. and Rajasekaran, E., (2021) "Land Surface Temperature Anomalies as Indicator of Land Cover Change: Case Study Over Chennai City," 2021 IEEE International India Geoscience and Remote Sensing Symposium (InGARSS), pp. 432-435, doi: 10.1109/InGARSS51564.2021.9792004. 

   5. Sangeetharani, M., Rajasekaran, E., Narvekar,P.,  Walunj, S. and Shinde, V., (2021) "Retrieval of Grape Crop Phenology Metrics From Time Series of Optical and SAR Data," 2021 IEEE International India Geoscience and Remote Sensing Symposium (InGARSS),  pp. 541-544, doi: 10.1109/InGARSS51564.2021.9791974. 

   6. Kukku Sara and Rajasekaran, E., (2020) "Improving the Spatiotemporal Resolution of Land Surface Temperature Data Using Disaggregation and Fusion Techniques: A Comparison," 2020 IEEE India Geoscience and Remote Sensing Symposium (InGARSS), Ahmedabad, India, pp. 46-49, doi: 10.1109/InGARSS48198.2020.9358936.

   7. Athira, K. V, Rajasekaran, E. and Boulet, G., (2020) "Comparison of Three Remote Sensing Based Multi-Source Evapotranspiration Models," 2020 IEEE India Geoscience and Remote Sensing Symposium (InGARSS), Ahmedabad, India, pp. 50-53, doi: 10.1109/InGARSS48198.2020.9358935.

   8. Choudhury, I., Bhattacharya, B. K., Eswar, R. and Sekhar, M. (2019), A baseline quantification of agricultural water use efficiency over Indian region using GEO-LEO-satellites, The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLII-3/W6, 277-284, doi: 10.5194/isprs-archives-XLII-3-W6-277-2019

   9. Mital, U., Rajasekaran, E., Asimaki, D. and Das, N. N. (2018), Investigating the Applicability of Integrated Hydrological Modeling for Mapping Regional Liquefaction Hazard, Geotechnical Earthquake Engineering and Soil Dynamics V: Seismic Hazard Analysis, Earthquake Ground Motions, and Regional-Scale Assessment, Editors: Brandenberg, S. J. and Manzari, M. T., 677-684, ASCE, doi: 10.1061/9780784481462

Conference Abstracts (oral/poster)

1. 1. Rajasekaran, E., Bhattacharya, B.K., Nigam, R. and Muddu, S. (2024), Improving the spatiotemporal resolution of Land Surface Temperature in the Indian context – Lessons learned and way forward, International Science Workshop on High-Resolution Thermal Earth Observation, 19-21 November, Ahmedabad, India.

   2. Sara, K. and Rajasekaran, E., (2024), Analysing the diurnal dynamics of land surface temperature and surface urban heat island effect over Delhi during heatwave using a hybrid downscaling approach, International Science Workshop on High-Resolution Thermal Earth Observation, 19-21 November, Ahmedabad, India.

   3. Athira, K V, Rajasekaran, E., Muddu S., Gilles Boulet, Rahul Nigam, B K Bhattacharya (2024), Comparative Analysis of Temporal Upscaling Methods for Daytime Evapotranspiration, International Science Workshop on High-Resolution Thermal Earth Observation, 19-21 November, Ahmedabad, India. 

   4. Athira, K V, Rajasekaran, E., Gilles Boulet, Rahul Nigam, B K Bhattacharya (2024), Evapotranspiration model evaluation at multiple temporal scales, International Science Workshop on High-Resolution Thermal Earth Observation, 19-21 November, Ahmedabad, India. 

   5. Sangeetharani, M., Rajasekaran, E., Saraswat, D and Kustas, W P. (2024), Integrating Vegetation Index-based evapotranspiration disaggregation and crop water balance model for farm scale vineyard irrigation estimation, International Science Workshop on High-Resolution Thermal Earth Observation, 19-21 November, Ahmedabad, India.

   6. Sara, K. and Rajasekaran, E., (2024), A two-step approach for field scale diurnal land surface temperature estimation from geostationary observations, Seventh International Symposium on Recent Advances in Quantitative Remote Sensing, 23-37 September 2024, Valencia, Spain.

   7. Athira, K V, Rajasekaran, E., Gilles Boulet, Rahul Nigam, B K Bhattacharya (2024), Evapotranspiration Estimation Using Multimodel Ensemble, Seventh International Symposium on Recent Advances in Quantitative Remote Sensing, 23-37 September 2024, Valencia, Spain. 

   8. Harod, R. and Rajasekaran, E. (2024) Estimating Landsat scale day-night Land Surface Temperature over India using Machine Learning, Seventh International Symposium on Recent Advances in Quantitative Remote Sensing, 23-37 September 2024, Valencia, Spain.

   9. Harde, S. and Rajasekaran, E., (2024), Assessing the importance of different water stress indicators in Light Use Efficiency models for estimating terrestrial Gross Primary Production, Seventh International Symposium on Recent Advances in Quantitative Remote Sensing, 23-37 September 2024, Valencia, Spain.

   10. Sangeetharani, M., Rajasekaran, E., Saraswat, D and Kustas, W P. (2024), Farm scale irrigation estimation over vineyards using remotely sensed evapotranspiration – a case study, Seventh International Symposium on Recent Advances in Quantitative Remote Sensing, 23-37 September 2024, Valencia, Spain.

   11. Athira K V, Rajasekaran, E., Boulet, G., Rahul Nigam, B K Bhattacharya (2024) Estimation of Evapotranspiration Using Multimodel Ensemble, American Meteorological Society’s 38th Conference on Hydrology, 104th AMS Annual Meeting, January 28 - February 1, 2024, Baltimore, Maryland, USA. (Won Second prize in student poster competition)

   12. Sara, K. and Rajasekaran, E., (2024), Assessing the Potential of Diurnal Land Surface Temperature at High Spatial Resolution in Monitoring Heatwaves Over India, American Meteorological Society’s 23rd Annual Student Conference, January 28 - February 1, 2024, Baltimore, Maryland, USA.

   13. Nandagopal, P. and Rajasekaran, E., (2024), Assessment of Evapotranspiration Partitioning from Remote Sensing Models and Ground-Based Algorithms, AGU Chapman Conference on Remote Sensing of the Water Cycle: Sensors to Science to Society, 13-16 February 2024, Honolulu Hawaii, USA.

   14. Harde, S. and Rajasekaran, E., (2024), Modelling gross primary productivity and water use efficiency over vineyards in Nashik district India: A pilot study, AGU Chapman Conference on Remote Sensing of the Water Cycle: Sensors to Science to Society, 13-16 February 2024, Honolulu Hawaii, USA.

   15. Sanjay N C, Rajasekaran, E. and Jeffrey Walker, (2023), Assessing the Potential of Hyper-resolution Land Surface Model to Improve Evapotranspiration Estimation at Farm Scale Using P-band and L-band Radiometer: A Pilot Study,2023 AGU Fall Meeting, December 2023, San Fransisco, USA.

   16. Nandagopal, P. and Rajasekaran, E., (2023), Evaluation of Two Source Models for Partitioning Evapotranspiration, 2023 AGU Fall Meeting, December 2023, San Fransisco. USA (online presentation happened in January 2024).

   17. Roy, A. and Rajasekaran, E., (2023) “Remote sensing based prioritization of different settlement types towards nature Based solution for urban cooling” 11th International Conference on Urban Climate, 28 Aug - 1 Sept 2023, UNSW Sydney, Australia.  

   18. Roy, Anusha., Sathyakumar, Vasu., and Rajasekaran, E. (2023) “Linking Surface Urban Heat Island (SUHI) dynamics and socio-economic status of urban neighbourhoods: A cloud-based geospatial analysis for climate justice in Mumbai”, 11th International Conference on Urban Climate, 28 Aug - 1 Sept 2023, UNSW Sydney, Australia.  

   19. Sangeetharani, M. and Rajasekaran, E. (2023), Modelling and spatial disaggregation of evapotranspiration towards farm level water management over vineyards, International High Resolution Thermal EO workshop, 10-12 May 2023, Frascati, Italy.

   20. Athira K V, Kukku Sara P.E. and Rajasekaran, E. (2023), Utility of disaggregated Land Surface Temperature in modelling the diurnal cycle of Evapotranspiration, International High Resolution Thermal EO workshop, 10-12 May 2023, Frascati, Italy.

   21. Roy, Anusha and Rajasekaran, E. (2023), Effect of spatial resolution of thermal data on surface urban heat island intensity, International High Resolution Thermal EO workshop, 10-12 May 2023, Frascati, Italy.

   22. Harod, R. and Rajasekaran, E. (2023), Retrieval of all-weather Land Surface Temperature by combining Thermal infrared and Passive Microwave Radiometry, International High Resolution Thermal EO workshop, 10-12 May 2023, Frascati, Italy. 

   23.  Kukku Sara P. E. and Rajasekaran, E. (2023), A study on the diurnal land surface temperature cycle during a warmer and a cooler year using high spatial resolution Land Surface Temperature data, International High Resolution Thermal EO workshop, 10-12 May 2023, Frascati, Italy.

   24. Boulet, G; Mwangi, S; Sassi, M.Z; Olioso, A; Mallick, K; Rajasekaran, E; Dutta, D. (2023), Retrieving Evapotranspiration based on realistic LST canopy distribution using energy budget models in forward and inverse modes, International High Resolution Thermal EO workshop, 10-12 May 2023, Frascati, Italy.

   25. Sangeetharani, M., Rajasekaran, E. and Saraswat, D. (2022) ": Modelling and Spatial Disaggregation of Evapotranspiration from Remote Sensing Over Vineyards " AGU fall meeting, 12-16 Decembr 2022, Chicago, USA.

   26. Roy, Anusha and Eswar, R. (2022) "Long term monitoring of urban conditions over Navi Mumbai from thermal infrared remote sensing", ISG-ISRS National symposium, Geosmart India 2022, 15-17 November 2022, Hyderabad, India.

   27. Harod, R., Kukku Sara and Rajasekaran, E. (2022) "Analysis of land surface temperature and its diurnal cycle during heatwave events over India, The 9th Digital Earth Summit, International Society of Digital Earth, 6-8 September 2022, Chennai, India.

   28. Kukku Sara P. E. and Rajasekaran, E. (2022), Modelling the diurnal surface temperature cycle at high spatial resolution using multi-sensor data, TRISHNA days 2022 Symposium, 22-24 March, 2022, Toulouse, France.

   29. Harod, R., Roy, Anusha and Rajasekaran, E. (2022), A simple approach to monitor urban land surface condition using Land Surface Temperature anomalies, TRISHNA days 2022 Symposium, 22-24 March, 2022, Toulouse, France.

   30. Athira, K. V., Rajasekaran, E., Boulet, G., Nigam, R. and Bhattacharya, B. K. (2022), Evaluation of two aggregation techniques for the estimation of Evapotranspiration at larger temporal scales, TRISHNA days 2022 Symposium, 22-24 March, 2022, Toulouse, France.

   31. Gadad, S., Rajasekaran, E., Athira, K. V. and Kukku Sara P. E. (2019), Triple collocation analysis to assess satellite-based soil moisture products over India, Hydro-2019 International Conference, 18–20 December, 2019, Hyderabad, India.

   32. Rajasekaran, E. Das, N.N., Entekhabi, D. and Yueh, S. (2017), The potential of SMAP soil moisture data for analyzing droughts, AGU Fall Meeting, 11th–15th December, New Orleans, USA.

   33. Rajasekaran, E., Jeyaram, R., Lohlri, C., Das, N.N., Podest, E., Hovhanessian, H. and Fairbanks, G. (2017), Development of a low-cost soil moisture sensor for in-situ data collection by citizen scientists, AGU Fall Meeting, 11th–15th December, New Orleans, USA.

   34. Mital, U., Azimaki, D., Rajasekaran, E., Das, N.N., and Stock, J. (2017), Improving Regional Liquefaction Hazard Maps Using Hydrological Remote Sensing Data: A Proof of Concept Study at Imperial County, Annual Meeting of the Seismological Society of America, 18th–20th April, Denver, USA.

   35. Rajasekaran, E., Sekhar, M., Bhattacharya, B.K. and Das, N. N. (2016), Development of long term evapotranspiration products using triangle model over India, AGU Fall Meeting, 12th–16th December, San Francisco, USA.

   36. Agrawal, S., Chakraborty, A., Eswar, R. and Sekhar, M. (2016), Land-atmosphere coupling characteristics over Indian region obtained from satellite observations and model simulations, “SPIE Asia Pacific Remote Sensing Conference on Remote Sensing and Modeling of the Atmosphere, Oceans, and Interactions VI, 4th April–7th April, 2016, New Delhi, India.

   37. Eswar, R., Sekhar M. and Bhattacharya, B.K. (2014), Long term estimation of evapotranspiration over Kabini basin at 250 m spatial resolution using MODIS data, Tereno International Conference on From observation to prediction in terrestrial systems, 29th Sept–2nd Oct, 2014, Bonn, Germany.