Research Interests

• Atmospheric aerosols and climate
• Aerosols source apportionment and emission characteristics
• Aerosol mixing state: Measurements and Impacts
• Aerosol chamber experiments - characterization (optical, physical, and chemical properties) of freshly emitted and chemically processed fossil fuel and biomass burning particles
• In-situ and remote sensing aerosols Instrumentation

Academic Qualifications

• Ph.D. (Physics), Physical Research Laboratory, Ahmedabad / Sardar Patel University, Vallabh Vidyangar, Gujarat
• M.Sc. (Electronics), Department of Physics & Electronics, Rani Durgavati Vishwavidyalaya, Jabalpur, M.P.
• B.Sc. (Physics, Electronics, Mathematics), St. Aloysius College (Autonomous), Rani Durgavati Vishwavidyalaya, Jabalpur, M.P.

Association (Life Member)

• Indian Aerosol Science and Technology Association
• Indian Society of Remote Sensing
• Indian Meteorological Society
• Indian Society for Mass Spectrometry
• Indian Physics Association
• Instrument Society of India

Laboratory Facilities

• Aerosol Monitoring Laboratory (AML), Ahmedabad
• Aerosol-Radiation Measurement Laboratory (ARML), Ahmedabad
• Aerosol Research Laboratory (ARL), Ahmedabad
• Aerosol-LiDAR Laboratory (ALL), Ahmedabad
• Aerosol Characterization Laboratory (ACL), Udaipur
• Atmospheric Science Laboratory (ASL), Gurushikhar, Mt. Abu

Publications

Selected Scientific Publications

1. Evaluation of black carbon emission inventories over Indian subcontinent: Role of open biomass burning and its representation in emission fluxes
   Akanksha Arora, H. Gadhavi, S. Ramachandran and T. A. Rajesh
   Atmospheric Environment, 359, 121367, 2025
2. Atmospheric black carbon aerosol: Long-term characteristics, source apportionment, and trends
   T. A. Rajesh and S. Ramachandran
   Science of the Total Environment, 934, 172928, 2024
3. Towards an improved representation of carbonaceous aerosols over the Indian monsoon region in a regional climate model RegCM4.6
   S. Ghosh, S. Dey, S. Das, N. Riemer, G. Giuliani, D. Ganguly, C. Venkataraman, F. Giorgi, S.N. Tripathi, S. Ramachandran, T. A. Rajesh, H. Gadhavi and A.K. Srivastava
   Geoscientific Model Development, 16, 1-15, 2023
4. Assessment of the coronavirus disease 2019 (COVID-19) pandemic imposed lockdown and unlock effects on black carbon aerosol, its source apportionment, and aerosol radiative forcing over an urban city in India
   T. A. Rajesh and S. Ramachandran
   Atmospheric Research, 267, 105924, 2022
5. Black carbon aerosols: Relative source strengths of vehicular emissions and residential/open wood burning over an urban and a semi-urban environment
   T. A. Rajesh, S. Ramachandran and V.K. Dhaker
   Atmospheric Pollution Research, 12, 11060, 2021
6. Black carbon aerosols over source vs. background region: Atmospheric boundary layer influence, potential source regions, and model comparison
   S. Ramachandran, T. A. Rajesh and R. Cherian
   Atmospheric Research, 256, 105573, 2021
7. Extensive and intensive properties of aerosol over distinct environments: Influence of anthropogenic emissions and meteorology
   T. A. Rajesh and S. Ramachandran
   Journal of Atmospheric and Solar-Terrestrial Physics, 202, 105223, 2020
8. Characteristics of black carbon aerosol mixing state over an urban region deduced using Single Particle Soot Photometer (SP2) and Differential Mobility Analyzer (DMA)
   B. Sarangi, S. Ramachandran, T. A. Rajesh and V.K. Dhaker
   Atmospheric Pollution Research, 11, 574-582, 2020
9. Spatial, seasonal, and altitudinal heterogeneity in single scattering albedo of aerosols over an urban and a remote site: Radiative implications
   T. A. Rajesh and S. Ramachandran
   Atmospheric Environment, 218, 116954, 2019
10. Aerosol optical properties over Gurushikhar, Mt. Abu: A high altitude mountain site in India
    T. A. Rajesh and S. Ramachandran
    Aerosol and Air Quality Research, 19, 1259-1271, 2019
11. Black Carbon Linked Aerosol Hygroscopic Growth: Size and Mixing State are Crucial
    B. Sarangi, S. Ramachandran S., T. A. Rajesh and Vishnu K Dhaker
    Atmospheric Environment, 200, 110-118, 2019
12. Influence of relative humidity, mixed-layer height, and mesoscale vertical-velocity variations on column and surface aerosol characteristics over an urban region
    S. Ramachandran, T.A. Rajesh and Sumita Kedia
    Boundary Layer Meteorology, 170, 161-181, 2019
13. Black carbon aerosols over urban and high altitude remote regions: Characteristics and Radiative implications
    T. A. Rajesh and S. Ramachandran
    Atmospheric Environment, 194, 110-122, 2018
14. Black carbon aerosol mass concentration, absorption and single scattering albedo from single and dual spot aethalometers: Radiative implications
    T. A. Rajesh and S. Ramachandran
    Journal of Aerosol Science, 119,77-90, 2018
15. Characteristics and source apportionment of black carbon aerosols over an urban site
    T. A. Rajesh and S. Ramachandran
    Environmental Science and Pollution Research, DOI 10.1007/s11356-017-8453-3, 2017
16. Aerosol mixing over urban region : Radiative effects
    Rohit Srivastava, S. Ramachandran, and T.A. Rajesh
    Quarterly Journal of Royal Meteorological Society, 142, 1732-1744, 2016
17. Airborne black carbon concentrations over an urban region in western India temporal variability, effects of meteorology, and source regions
    M. Bapna, R. Sunder Raman, S. Ramachandran and T.A. Rajesh
    Environmental Science and Pollution Research, 20, 1617-1631, 2013
18. Contribution of natural and anthropogenic aerosols to optical properties and radiative effects over an urban location
    S. Ramachandran, Rohit Srivastava, Sumita Kedia and T.A. Rajesh
    Environmental Research Letters, 7, 034028, 2012
19. Aerosol absorption over Bay of Bengal during winter: Variability and sources
    Sumita Kedia, S. Ramachandran, T.A. Rajesh and Rohit Srivastava
    Atmospheric Environment, 54, 738-745, 2012
20. Aerosol radiative forcing deduced from observations and models over an urban location and sensitivity to single scattering albedo
    Rohit Srivastava, S. Ramachandran, T. A. Rajesh and Sumita Kedia
    Atmospheric Environment, 45, 6163-6171, 2011
21. Seasonal variability in mixed layer height and its impact on trace gas distribution over a tropical urban site: Ahmedabad
    S. Srivastava, S. Lal, D. Bala Subrahamanyam, S. Gupta, S. Venkataramani and T. A. Rajesh
    Atmospheric Research, 96, 79-87, 2010
22. Asymmetry parameters in the lower troposphere derived from aircraft measurements of aerosol scattering coefficients over tropical India
    S. Ramachandran and T. A. Rajesh
    Journal of Geophysical Research, 113, D16212,doi:10.1029/2008JD009795, 2008
23. Black carbon aerosol mass concentrations over Ahmedabad, an urban location in western India: Comparison with urban sites in Asia, Europe, Canada, and the United States
    S. Ramachandran and T. A. Rajesh
    Journal of Geophysical Research, 112, D06211,doi:10.1029/2006JD007488, 2007
24. Wintertime aerosol properties during foggy and non-foggy days over urban center Delhi and their implications to Short Wave radiative forcing
    Ganguly, D., A. Jayaraman, T. A. Rajesh and H. Gadhavi
    Journal of Geophysical Research, 111, D15217, doi:10.1029/2005JD007029, 2006
25. Single scattering albedo of aerosols over the central India: Implications for the regional aerosol radiative forcing
    Ganguly, D., H. Gadhavi, A. Jayaraman, T. A. Rajesh and A. Misra
    Geophysical Research Letters, 32, L18803, doi:10.1029/2005GL023903, 2005
26. Spatial variations in aerosol characteristics over central India observed during the February 2004 road campaign experiment
    A. Jayaraman H. Gadhavi, D. Ganguly, A. Misra, S. Ramachandran and T. A. Rajesh
    Atmospheric Environment, 40, 6504-6515, doi:10.1016/ j.atmosenv2006.01.034, 2005
27. Features in wavelength dependence of aerosol absorption observed over central India
    Ganguly, D., A. Jayaraman, H. Gadhavi and T.A. Rajesh
    Geophysical Research Letters, 32, L13821, doi: 10.1029/2005GL023023, 2005

Refereed Technical Publications/ Publications in Proceedings

28. Vertical distribution of aerosols: layer wise quantification to total extinction over an urban environment
    Nitinkumar Ladhva, T. A. Rajesh, S. Ramachandran and Vishnu K. Dhaker
    IASTA-Bulletin, 2024, Accepted
29. Characteristics and trends in aerosol properties over a tourist city in Western India
    Vishnu K. Dhaker and T. A. Rajesh
    IASTA-Bulletin, 2024, Accepted
30. Meteorological Data Logger System (MetDLS)
    T. A. Rajesh and Vishnu K . Dhaker
    Journal of the Instrument Society of India, Vol. 48 No. 3, PP: 100-104, 2018
31. Data analysis and visualization software package for SKYRAD.PACK V4.2
    T. A. Rajesh and S. Ramachandran
    PRL Technical Note, PRL-TN-2018-111, 2018
32. Spatial distribution of black carbon aerosol: Road campaign experiment in western India
    T. A. Rajesh, Vishnu K. Dhaker, Malaidevan P., and S. Ramachandran
    IASTA-Bulletin, ISSN:0971-4510,Vol. 23 Issue 1 & 2, 729-732, 2018
33. Long term trends in aerosol optical depth over Bay of Bengal
    T. A. Rajesh and Vishnu K. Dhaker
    IASTA-Bulletin, ISSN:0971-4510,Vol. 23 Issue 1 & 2, 724-728, 2018
34. Cloud Detection using Image Processing
    Malaidevan P., T. A. Rajesh, and S. Ramachandran
    IASTA-Bulletin, ISSN:0971-4510,Vol. 23 Issue 1 & 2, 716-718, 2018
35. Laboratory simulation of atmospheric transmission
    T. A. Rajesh, S. Ramachandran, Malaidevan P., Vishnu Kumar Dhaker, J. T. Vinchhi, Mitesh Bhavsar and T. K. Sunilkumar
    PRL Technical Note, PRL-TN-2017-110, 2017
36. Interactive visualization package for aerosol physical and optical properties
    T. A. Rajesh, Atul A. Manke and S. Ramachandran
    IASTA-Bulletin, ISSN:0971-4510,Vol. 22 Issue 1 & 2, 001-005, 2016
37. Multiwavelength Sun photometer (MSP): Instrument for aerosol columnar properties
    T. A. Rajesh and S. Ramachandran
    IASTA-Bulletin, ISSN:0971-4510,Vol. 22 Issue 1 & 2, 014-017, 2016
38. Aerosol sampling system: Tool to study the effect of relative humidity on surface aerosol properties
    T. A. Rajesh and S. Ramachandran
    IASTA-Bulletin, ISSN:0971-4510,Vol. 22 Issue 1 & 2, 018-021, 2016
39. Aerosol optical depth computational package for hand-held Sun photometer
    T. A. Rajesh
    PRL Technical Note, PRL-TN-2016-109, 2016
40. Contribution of aerosol components to aerosol optical depth over a semi-arid location in western India
    T. A. Rajesh, S. Ramachandran and Toshihiko Takemura
    IASTA-Bulletin, ISSN:0971-4510,Vol. 22 Issue 1 & 2, 398-401, 2016
41. Aerosol optical depth and its component trends over Vallabh Vidyanagar, Anand
    T. A. Rajesh, S. Ramachandran and P. C. Vinodkumar
    IASTA-Bulletin, ISSN:0971-4510,Vol. 22 Issue 1 & 2, 402-405, 2016
42. Real time data acquisition and computation software package for Aethalometer
    T. A. Rajesh and S. Ramachandran
    PRL Technical Note, PRL-TN-2016-108, 2016
43. Auto-start hardware for double conversion UPS
    T. A. Rajesh, J. T. Vinchhi and Mitesh Bhavsar
    Journal of the Instrument Society of India, ISSN:0970-9983, Vol. 45 No. 4, PP: 195-197, 2016
44. Real time data acquisition and visualization software package for aerosol size spectrometer
    T. A. Rajesh, Atul A. Manke and S. Ramachandran
    PRL Technical Note, PRL-TN-2014-106, 2014
45. Microphysical Aerosol Properties: A Software suite MAP
    T. A. Rajesh
    IASTA-Bulletin, ISSN:0971-4510, Vol. 21 Issue 1 & 2, 477-478, 2014
46. Aerosol optical properties over different environments in western India
    T. A. Rajesh
    IASTA-Bulletin, ISSN:0971-4510,Vol. 21 Issue 1 & 2, 474-476, 2014
47. Size segreagated aerosols: Chemical composition and mixing
    S. Ramachandran and T. A. Rajesh
    IASTA-Bulletin, ISSN:0971-4510,Vol. 21 Issue 1 & 2, 479-480, 2014
48. ATmega2560 based stepper motor driver and encoder system
    T. A. Rajesh, Dharmraj N. Parmar and Sachin J. Panchal
    Journal of the Instrument Society of India, ISSN:0970-9983, Vol. 44 No. 2, PP: 86-88, 2014
49. Four-quadrant photodetector based feedback mechanism for dual axis Sun tracker system
    T. A. Rajesh, Dishant Chavda and Rohan Hinglokwala
    Journal of the Instrument Society of India, ISSN:0970-9983, Vol. 44 No. 1, PP: 39-42, 2014
50. An Integrated Weather Station System
    T. A. Rajesh and S. Ramachandran
    PRL Technical Note, PRL-TN-2013-104, 2013
51. Software package for Aerosol Size Distribution
    T. A. Rajesh
    IJSET, ISSN:2277-1581, Vol 2 Issue 4, PP: 249-255, 2013
52. An automated roof window system
    T. A. Rajesh, S. Ramachandran and G. P. Ubale
    PRL Technical Note, PRL-TN-2012-101, 2012
53. Microcontroller based 1-Wire temperature sensor network
    T. A. Rajesh
    PRL Technical Note, PRL-TN-2011-100, 2011
54. Data acquisition over ethernet using serial device server - NPort 5210
    T. A. Rajesh
    PRL Technical Note, PRL-TN-2010-96, 2010
55. Graphical user interface for stepper motor based filter wheel control
    T. A. Rajesh
    PRL Technical Note, PRL-TN-2008-92, 2008
56. Real time data acquisition in windows for 8 channel analog input module - ADAM4017+
    T. A. Rajesh
    PRL Technical Note, PRL-TN-2007-89, 2007