Dr.Sachin S. Gunthe

Dr. Sachin S. Gunthe
Associate Professor
Phone: +91-44-22574308
Email: s.gunthe@iitm.ac.in

IITM Scholar profile page

Education
  • Ph.D. Atmospheric Chemistry and Physics, Indian Institute of Tropical Meteorology, Pune, 2006
  • M.S. University of Pune, Pune 2001
Professional Experience
  • Assistant Professor, Environmental and Water Resources Engineering Division, Indian Institute of Technology Madras, Chennai, India. October 2011 – present
  • Visiting Scholar Jun – Jul 2015. School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
  • Post doctoral researcher (with Prof. M. O. Andreae and Dr. U. Pöschl), Biogeochemistry Department, Max Planck Institute for Chemistry Mainz, Germany. July 2006 – Sep 2011
Research Interests
  • Atmospheric Chemistry and Physics
  • Aerosol-cloud-precipitation interactions; effect of increasing anthropogenic aerosols on Indian summer monsoon
  • Characterizing properties of atmospheric aerosols (including biological aerosols) to study the climatic and health impact (field measurements, laboratory experiments, and numerical modeling)
Recent Publications

Ghosh, S., Vittal, H., Sharma, T., Karmakar, S., Kasiviswanathan, K. S., Dhanesh, Y., Sudheer, K. P., and Gunthe, S. S.: Indian Summer Monsoon Rainfall: Implications of Contrasting Trends in the Spatial Variability of Means and Extremes, PLoS ONE, 11, e0158670, 10.1371/journal.pone.0158670, 2016.

Valsan, A. E., Ravikrishna, R., Biju, C. V., Pöhlker, C., Després, V. R., Huffman, J. A., Pöschl, U., and Gunthe, S. S.: Fluorescent biological aerosol particle measurements at a tropical high-altitude site in southern India during the southwest monsoon season, Atmos. Chem. Phys., 16, 9805-9830, doi:10.5194/acp-16-9805-2016, 2016.

Ansari, T. U., Ojha, N., Chandrasekar, R., Balaji, C., Singh, N., and Gunthe, S. S.: Competing impact of anthropogenic emissions and meteorology on the distribution of trace gases over Indian region, Journal of Atmospheric Chemistry, 1-18, 10.1007/s10874-016-9331-y, 2016.

 

Ansari, T. U., Valsan, A. E., Ojha, N., Ravikrishna, R., Narasimhan, B., and Gunthe, S. S.: Model simulations of fungal spore distribution over the Indian region, Atmospheric Environment, 122, 552-560, 2015.

 

Valsan, A. E., Priyamvada, H., Ravikrishna, R., Després, V. R., Biju, C. V., Sahu, L. K., Kumar, A., Verma, R. S., Philip, L., and Gunthe, S. S.: Morphological characteristics of bioaerosols from contrasting locations in southern tropical India – A case study, Atmospheric Environment, 122, 321-331, 2015.

 

Sahu, L. K., Sheel, V., Pandey, K., Yadav, R., Saxena, P., and Gunthe, S.: Regional biomass burning trends in India: Analysis of satellite fire data, J Earth Syst Sci, 124, 1377-1387, 10.1007/s12040-015-0616-3, 2015.

 

Paramonov, M., Kerminen, V. M., Gysel, M., Aalto, P. P., Andreae, M. O., Asmi, E., Baltensperger, U., Bougiatioti, A., Brus, D., Frank, G. P., Good, N., Gunthe, S. S., Hao, L., Irwin, M., Jaatinen, A., Juranyi, Z., King, S. M., Kortelainen, A., Kristensson, A., Lihavainen, H., Kulmala, M., Lohmann, U., Martin, S. T., McFiggans, G., Mihalopoulos, N., Nenes, A., O’Dowd, C. D., Ovadnevaite, J., Petaja, T., Poschl, U., Roberts, G. C., Rose, D., Svenningsson, B., Swietlicki, E., Weingartner, E., Whitehead, J., Wiedensohler, A., Wittbom, C., and Sierau, B.: A synthesis of cloud condensation nuclei counter (CCNC) measurements within the EUCAARI network, Atmospheric Chemistry and Physics, 15, 12211-12229, 10.5194/acp-15-12211-2015, 2015.

 

Thomas, T., Gunthe, S. S., Ghosh, N. C., and Sudheer, K. P.: Analysis of monsoon rainfall variability over Narmada basin in central India: Implication of climate change, Journal of Water and Climate Change, 6, 615-627, 10.2166/wcc.2014.041, 2015.

 

Kanawade, V. P., Shika, S., Pöhlker, C., Rose, D., Suman, M. N. S., Gadhavi, H., Kumar, A., Shiva Nagendra, S. M., Ravikrishna, R., Yu, H., Sahu, L. K., Jayaraman, A., Andreae, M. O., Pöschl, U., and Gunthe, S. S.: Infrequent occurrence of new particle formation at a semi-rural location, Gadanki, in tropical southern India. Atmospheric Environment, 94, 264 – 273, 2014.

 

Sahu, L.K., Sheel, V., Kajino, M., Deushi, M., Gunthe, S.S.,Sinha, P.R., Sauvage, B., Thouret, V., Smit, H.G., 2014. Seasonal and inter-annual variability of tropospheric ozone over an urban site in India: A study based on MOZAIC and CCM vertical profiles over Hyderabad. Journal of Geophysical Research: Atmospheres, 2013JD021215.

 

Rose, D., Gunthe, S. S., Jurányi, Z., Gysel, M., Frank, G. P., Schneider, J., Curtius, J., and Pöschl, U.: Size-resolved and integral measurements of cloud condensation nuclei (CCN) at the high-alpine site Jungfraujoch, Atmos. Chem. Phys. Discuss., 13, 32575-32624, doi:10.5194/acpd-13-32575-2013, 2013.

 

Sahu, L. K., Sheel, V., Kajino, M., Gunthe, S. S., Thouret, V., Nedelec, P., and Smit, H. G.: Characteristics of tropospheric ozone variability over an urban site in Southeast Asia: A study based on MOZAIC and MOZART vertical profiles, Journal of Geophysical Research-Atmospheres, 118, 8729-8747, 10.1002/jgrd.50662, 2013.

 

Huffman, J. A., Sinha, B., Garland, R. M., Snee-Pollmann, A., Gunthe, S. S., Artaxo, P., Martin, S. T., Andreae, M. O. and Poschl, U.: Size distributions and temporal variations of biological aerosol particles in the Amazon rainforest characterized by microscopy and real-time UV-APS fluorescence techniques during AMAZE-08, Atmospheric Chemistry and Physics, 12(24), 11997-12019, 2012.

 

Pöhlker, C., Wiedemann, K. T., Sinha, B., Shiraiwa, M., Gunthe, S. S., Smith, M., Su, H., Artaxo, P., Chen, Q., Cheng, Y., Elbert, W., Gilles, M. K., Kilcoyne, L. K. D., Moffet, R. C., Weigand, M., Martin, S. T., Pöschl, U., and Andreae, M. O.: Biogenic Potassium Salt Particles as Seeds for Secondary Organic Aerosol in the Amazon., Science, 337, 1075 – 1078, 2012.

 

Cheng, Y., Su, H., Rose, D., Gunthe, S. S., Berghof, M., Wehner, B., Achtert, P., Nowak, A., Takegawa, N., Kondo, Y., Gong, G., Shao, M., Hu, M., Zhu, T., Zhang, Y. H., Wiedensohler, A., Andreae, M. O., and Pöschl, U.: Size-resolved mixing state of soot in the megacity Beijing, China: diurnal cycle, aging and parameterization., Atmospheric Chemistry and Physics, 12, 4477 – 4491, 2012.

 

Gunthe, S. S., Rose, D., Su, H., Garland, R. M., Achtert, P., Nowak, A., Wiedensohler, A., Kuwata, M., Takegawa, N., Kondo, Y., Hu, M., Shao, M., Zhu, T., Andreae, M. O., and Pöschl, U.: Cloud condensation nuclei from fresh and aged air pollution in the megacity region of Beijing, Atmospheric Chemistry and Physics,11, 11023 – 11039, 2011.

 

Rose, D., Gunthe, S. S., Su, H., Garland, R. M., Yang, H., Berghof, M., Cheng, Y. F., Wehner, B., Achtert, P., Nowak, A., Wiedensohler, A., Takegawa, N., Kondo, Y., Hu, M., Zhang, Y., Andreae, M. O., and Pöschl, U.: Cloud condensation nuclei in polluted air and biomass burning smoke near the mega-city Guangzhou, China – Part 2: Size-resolved aerosol chemical composition, diurnal cycles, and mixing state of CCN-inactive soot particles. Atmospheric Chemistry and Physics, 11, 2817 – 2836, 2011.

 

Martin, S. T., M. O. Andreae, D. Althausen, P. Artaxo, H. Baars, S. Borrmann, Q. Chen, D. K. Farmer, A. Guenther, S. S. Gunthe, J. L. Jimenez, T. Karl, K. Longo, A. Manzi, T. Pauliquevis, M. D. Petters, A. J. Prenni, U. Pöschl, L. V. Rizzo, J. Schneider, J. N. Smith, E. Swietlicki, J. Tota, J. Wang, A. Wiedensohler and S. R. Zorn: An overview of the Amazonian Aerosol Characterization Experiment 2008 (AMAZE-08),Atmos. Chem. Phys., 10, (23), 11415-11438, 2010.

 

  1. Pöschl, S. T. Martin, B. Sinha, Q. Chen, S. S. Gunthe, J. A. Huffman, S. Borrmann, D. K. Farmer, R. M. Garland, G. Helas, J. L. Jimenez, S. M. King, A. Manzi, E. Mikhailov, T. Pauliquevis, M. D. Petters, A. J. Prenni, P. Roldin, D. Rose, J. Schneider, H. Su, S. R. Zorn, P. Artaxo, M. O. Andreae. Rainforest aerosols as biogenic nuclei of clouds and precipitation in the Amazon.Science, 329, 1513-1516, 2010.

 

Su, H., D. Rose, Y. F. Cheng, S. S. Gunthe, A. Massling, M. Stock, A. Wiedensohler, M. O. Andreae and U. Pöschl: Hygroscopicity distribution concept for measurement data analysis and modeling of aerosol particle mixing state with regard to hygroscopic growth and CCN activation, Atmos. Chem. Phys., 10, (15), 7489-7503, 2010.

 

Röckmann, T., Álvarez, CX., G., Walter, S., vander Veen, C., Wollny, A. G., Gunthe, S. S., Helas, G., Pöschl, U., Keppler, F., Greule, M., and Brand, W., A. The isotopic composition of H2 from biomass burning – dependency on combustion efficiency, moisture content and δD of local precipitation. J. Geophys. Res, doi:10.1029/2009JD013188, 2010.

 

Gunthe, S. S., S. M. King, D. Rose, Q. Chen, P. Roldin, D. Farmer, J.-L. Jimenez, P. Artaxo, M. O. Andreae, S. T. Martin, and U. Pöschl. Cloud condensation nuclei in pristine tropical rainforest air of Amazonia: Size resolved measurements and modeling of atmospheric aerosol composition and CCN activity. Atmos Chem and Phys., 9, 7551-7575, 2009.

 

  1. Reutter, H. Su, J. Trentmann, M. Simmel, D. Rose, S. S. Gunthe, H. Wernli, M. O. Andreae and U. Pöschl.: Aerosol- and updraft-limited regimes of cloud droplet formation: influence of particle number, size and hygroscopicity on the activation of cloud condensation nuclei (CCN). Atmos Chem and Phys, 9, 7067-7080, 2009

 

RM Garland, O Schmid, A Nowak, P Achtert, A Wiedensohler, S. S. Gunthe, N Takegawa, K Kita, Y Kondo, M Hu, M Shao, LM Zeng, T Zhu, MO Andreae and U Pöschl. Aerosol optical properties observed during CAREBeijing-2006: Characteristic differences between the inflow and outflow of Beijing city air. J Geophys Res doi: 10.1029/2008JD010780, 2009.

Wiedensohler, Y. F. Cheng, A. Nowak, B. Wehner, P. Achtert, M. Berghof, W. Birmili, M. Hu, T.Zhu, N. Takegawa, K. Kita, Y.Kondo, S. R. Lou, A. Hofzumahaus, F. Holland, A. Wahner, S.S. Gunthe, D. Rose, U. Pöschl. Rapid aerosol particle growth and increase of cloud condensation nucleus (CCN) activity by secondary aerosol formation: a case study for regional air pollution in north-eastern China. J Geophys Res,114, D00G08, dio:10.1029/2008JD010884, 2009.

 

  1. Rose, S. S. Gunthe, G. P. Frank, U. Dusek, M. O. Andreae, and U. Pöschl. Calibration and measurement uncertainties of a continuous-flow cloud condensation nuclei counter (DMT-CCNC): CCN activation of ammonium sulfate and sodium chloride aerosol particles in theory and experiment. Atmos Chem and Phys, 8, 1115-1179, 2008.

 

  1. Beig, S. Guntheand D. B. Jadhav. Simultaneous measurements of ozone and its precursors on a diurnal scale at a semi urban site in India. J Atmos Chem.DOI 10.1007/s10874-007-9068-8 2007
Research and Consultancy

Current research projects:

  • Special grant from Max Planck Society for aerosol-cloud-precipitation interaction studies over Indian region
  • Measurements and modelling of Clound Condensation Nuclei (CCN) in Indian continental and marine environment: Ministry of Earth Sciences (MoES). Nov 2014 – Oct 2017
  • Characterizing properties of atmospheric aerosols to understand climatic impact – Funding agency: SERB, Department of Science and Technology (DST). Oct 2013 – Sep 2016
  • Characterizing the properties of biological aerosol particles under different environmental and seasonal conditions over Indian tropical region: assesment for possible climatic and health impact – As a part of DST-Max Planck Partner Group at IIT Madras. 2013 – 2016 (2018)
  • Characterizing atmospheric aerosol properties in south Indian region – Funding agency: IC&SR, IIT Madras. Nov 2011- Oct 2014 (Completed)

Ongoing/completed consultancy projects

  • Performance evaluation of existing De-SOX system and conducting environmental compliance audit (as a co-coordinator; Chief coordinator-Dr. S. M. Shiva Nagendra)
  • Environmental compliance audit for Hyundai motors, Chennai, India (as a co-coordinator; Chief coordinator-Dr. S. M. Shiva Nagendra)
Student Guidance

Student Guidance

Ongoing:

  • Hema P. (Ph.D.) – Bioaerosol Characterization (offiline techniques)
  • Aswathy E. V. (M. Tech; Ph.D.) – Bioaerosol Characterication (Online technique)
  • Saimy Davis (M. S.) – Climate modelling
  • Amit Sharma (Ph.D.) – Climate modeling

Completed:

  • Shika S. (Ph.D.) – Aerosol field measurement –
  • Tabish U. Ansari (M. S.) – Climate modelling
  • Srikath R. (M. Tech.) – Cloud parcel modelling
  • L. Ramyasravani (B. Tech.) – Climate modelling
  • Soumya G. (B. Tech.) – Bioaerosol characterization
Courses
  • CE4011 Introduction to Atmospheric and Climate Sciences
  • CE5180 Air Quality Management
  • CE5150 Environmental Chemistry and Microbiology
  • ID1200 Ecology and Environment-Co cooridinator
  • CE3040 Environmental Engineering
Continuing Education
  • Arranged a two days workshop on “Climate and Health Effects of Tropical Aerosols” on 6-7 March 2013
  • Winter School on “Atmospheric Aerosol Physics, Measurement, and Sampling Techniques” with funding from Max Planck Society and World Meteorological Orgnaization (2013, 2016)
  • Hosted the Meeting of the Head’s of the Max Planck Partner Group. 12 – 14 March 2015