आईआईटीएम
IITM

Affiliations in India

• (Aug 2014 – Feb 2015) & (Dec 2015 – Feb 2017): Acting Director, IITM, Pune
• 2011-Present: Executive Director, Centre for Climate Change Research (CCCR), IITM, Pune
• 1995 - present: Senior Scientist, Indian Institute of Tropical Meteorology (IITM), Pune
• 1992-1995: Senior Scientific Officer, Natl. Centre for Medium Range Weather Forecasting, Delhi
• 1987-1992: Research Fellow, Physical Research Laboratory, Ahmedabad, India

Awards / Honors / Recognition

• Nominated as a subject expert on the Research and Recognition  Committee for the subject of Atmospheric & Space Science under  the Faculty of Science & Technology of Savitribai Phule Pune University (November 2017 – November 2019)
• Coordinating Lead Author (CLA) in the First Lead Author Meeting of the Intergovernmental Panel on Climate Change (IPCC) 6th Assessment Report Working Group-1 during 25-29 June 2018 held at Guangzhou, China.
• Chair, Panel Discussion on 'Framing the 1.5oC Climate Challenge: Integrating SDGs, Climate policy and climate action', and technical session on 'Dynamics of Ecosystem Services and Climate Science' Third National Consultation on Climate Change Responses of the ASSAR Consortia of the CARIAA project organised by Indian Institute for Human Settlements (IIHS), Bengaluru at the India International Centre, New Delhi on 23 March 2017
• Invited as Coordination Lead Author (CLA) - Climate Change in the Hindu Kush Himalayan Region (HKH) in the Hindu Kush Himalayan Monitoring and Assessment Program (HIMAP) Writeshop, International Centre for Integrated Mountain Development (ICIMOD), Kathmandu, Nepal, 11-13 June 2016.
• Chair, Session on 'Remote sensing and Climate-II', 10th SPIE Asia-Pacific Remote Sensing Symposium, New Delhi 04-07 April 2016
• Editor, Earth System Dynamics, Open Access Journal, European Geophysical Union
• Coordinating Lead Author for “Chapter 8: Water Cycle Changes” of the IPCC Working Group I Sixth Assessment Report.
• External Examiner for conducting Ph.D. viva-voce of a candidate at Indian Institute of Technology, New Delhi and Bombay

Teaching

• Course on Geophysical Fluid Dynamics, IITM, Pune (Aug-Dec 2008)
• Course on Atmospheric Physics, IISER, Pune (Feb-Mar 2008)
• Course on Geophysical Fluid Dynamics, IITM, Pune (Aug-Dec 2006)
• Lectures on Atmospheric General Circulation and Geophysical Fluid Dynamics - for the Winter School on Modelling the Planetary Atmospheres, Physical Research Laboratory, Ahmedabad (26 Dec 2006- 1 Jan 2007)
• Lectures on "Spectral techniques in atmospheric general circulation models" - Short training course on computational methods, IITM, Pune (October 2004)
• Lectures on "GCM simulation of monsoon variability", Fourth SERC School, IIT Delhi (27-29 April 2003)
• Lectures during the DST sponsored Third SERC School on Advanced Geophysical Fluid Dynamics (May-June 1996)

• Asia Oceania Geosciences (AOGS) Conference, Singapore, 11-15 August 2009
• Center for Climate System Research (CCCR), University of Tokyo, 07 August 2009
• Meteorological Research Institute, Tsukuba, Japan, 10 July 2009
• Annual Monsoon Workshop 2008, Indian Met. Society, Pune, 22 December 2008
• International Conference on Progress in Weather and Climate Modelling over the Indian Region, NCMRWF, NOIDA, 9-12 December 2008
• National Centre for Atmospheric Science, University of Reading, UK,30 July 2007

 International Collaborations

• Frontier Research System for Global Change, Japan (Dr. Masato Sugi, Prof. Suki Manabe, Prof. Toshio Yamagata, Dr. Swadhin Behera)
• Center for Ocean Land Atmosphere Studies, Maryland, USA, (Dr. Mike Fennessy)
• Rosenstiel School of Marine Sciences, University of Miami, USA (Prof. Chidong Zhang)
• Center for Clouds, Chemistry and Climate (C4), Scripps Institution of Oceanography, University of California, La Jolla, San Diego, USA (Prof. V. Ramanathan)
• National Centre for Atmospheric Science, Department of Meteorology, University of Reading, UK (Prof. Julia Slingo)
• CSIRO Marine and Atmospheric Research, Hobart, Tasmania (Prof. Gary Meyers)

Invited lectures in India, abroad in International / National Scientific Conference / Symposium

 Sponsored Projects

Publications

Total Publications = 157 scientific articles (133 in peer-reviewed journals & books/book chapters, 24 Research Reports, Newsletters, etc).

https://scholar.google.co.in/citations?user=XTOAvmoAAAAJ&hl=en

Journals, Books & Book Chapters

1. Gokul Tamilselvam, Ramesh Vellore, R. Krishnan, D.C. Ayantika, K. Reji Maria Joy (2024): Low clouds over the subtropical Indian Ocean and sub-seasonal circulation associations with the Indian summer monsoon. Climate Dynamics, https://doi.org/10.1007/s00382-023-07011-2
2. Kalik, Vishisth, R. Krishnan, D.C. Ayantika, P. Swapna, M. Singh, N. Sandeep, Ramesh Vellore, V. Brahmananda Rao (2024): Understanding the role of climate change on the observed strengthening of the boreal winter Hadley circulation since the mid-twentieth century. Environmental Research: Climate (Under Review)
3. Ayantika, D.C., K.M. Sumit, R. Krishnan, R. Vellore and P. Guhathakurta (2023): A mechanistic investigation into the unusual intensification of rainfall over Western India during the 2019 summer monsoon. Atmos. Research, https://doi.org/10.1016/j.atmosres.2023.107209
4. Mangesh M Goswami, Milind Mujumdar, Bhupendra Bahadur Singh, Madhusdan Ingale, Naresh Ganeshi, Manish Ranalkar, Trenton E Franz, Prashant Srivastav, Devi Niyogi, R. Krishnan and S.N. Patil (2023): Understanding the soil water dynamics during excess and deficit rainfall conditions over the core monsoon zone of India.  Environ. Res. Lett. 18, 114011, https://doi.org/10.1088/1748-9326/acffdf
5. Singh, B.B., Krishnan, R., Sabin, T.P. et al. (2023): Upper tropospheric moistening during the Asian summer monsoon in a changing climate. Clim Dyn., https://doi.org/10.1007/s00382-023-06896-3.
6. Jyoti, J., P. Swapna, R. Krishnan (2023): North Indian Ocean sea level rise in the past and future: The role of climate change and variability. Global and Planetary Change, 104205. https://doi.org/10.1016/j.gloplacha.2023.104205
7. Ganeshi, N.G., Mujumdar, M., Takaya, Y., Goswami, M.M., Singh, B.B., Krishnan, R., T. Terao (2023): Soil moisture revamps the temperature extremes in a warming climate over India. Nature npj Clim. Atmos. Science, 6:12; https://doi.org/10.1038/s41612-023-00334-1.
8. Aswin Sagar, R. Krishnan, T.P. Sabin (2023): Anthropogenically-forced weakening of the Indian summer monsoon and enhancement of western North Pacific tropical cyclogenesis. Frontiers in Earth Science. 11.1149344. DOI: 10.3389/feart.2023.1149344.
9. Ramarao, M.V.S., D.C. Ayantika, R. Krishnan, J. Sanjay, T.P. Sabin, M. Mujumdar, K.K. Singh (2023): Signatures of aerosol-induced decline in evapotranspiration over the Indo-Gangetic plain during the recent decades. Mausam, 74 (2).
10. Krishnan, R., Kalik Vishisth, D.C. Ayantika, Sumit Kumar, R.K. Vellore (2023): Climate Change and Monsoon Rainstorms. Monograph on Severe Storms: Anatomy, Early Warning Systems and Aftermath in Changing Climate Scenarios -Editors: Someshwar Das and Wei-Kuo Tao, Centre for Science & Technology, Non-aligned & Other Developing Countries, New Delhi (In Press).
11. Thara, P., P. Murugavel, Mahen Konwar, Neelam Malap, K. Gayatri, Shivsai Dixit, Soumya Samanta, Subharthi Choudhuri, Sudarsan Bera, Mercy Varghese, J. Rao, J. Sandeep, P.D. Safai, A.K. Sahai, Duncan Axisa, A. Karipot, Darrel Baumgardner, Benjamin Werden, Ed Fortner, Kurt Hibert, Sathy Nair, Shivdas Bankar, Dinesh Gurnule, Kiran Todekar, Jerry Jose, V. Jayachandran, Pawan Soyam, Abhishek Gupta, Harish Choudhary, Aravindhavel, Suresh Babu Kantipudi, P. Pradeepkumar, R. Krishnan, K. Nandakumar, Peter Decarlo, Doug Worsnop, G.S. Bhat, M. Rajeevan and Ravi Nanjundiah (2023) CAIPEEX – Indian cloud seeding scientific experiment. Bull. Amer. Meteorol. Soc., https://doi.org/10.1175/BAMS-D-21-0291.1
12. Roy C., Ravishankara A.R., Newman P.A., David L.M., Fadnavis S., Rathod S.D., Lait L., Krishnan R., Clark H., Sauvage B. (2022): Estimation of Stratospheric Intrusions During Indian Cyclones, J. Geophys. Res.: (Atmos), 128: e2022JD037519, February 2023, DOI:10.1029/2022JD037519, 1-21
13. Mudra L., Sabin T.P., Krishnan, R., Pausata F.S. R., Marti O., Braconnot P. (2022): Unravelling the roles of orbital forcing and oceanic conditions on the mid-Holocene boreal summer monsoons, Clim. Dyn., Online, December 2022, DOI:10.1007/s00382-022-06629-y, 1-20
14. Douville H., Allan R.P., Arias P.A., Betts R.A., Caretta M.A., Cherchi A, Mukherji A., Krishnan R., Renwick J. (2022): Water remains a blind spot in climate change policies, PLOS Water, 1: e0000058, DOI:10.1371/journal.pwat.0000058, 1-16
15. P. Sreeraj, P. Swapna, R. Krishnan, A.G. Nideesh and N. Sandeep (2022): Extreme sea level rise along the Indian Ocean coastline: observations and 21^st century projections. Environ. Res. Lett., 17, 114016, DOI: 10.1088/1748-9326/ac97f5 
16. Reddy, A.P., Gandhi, N., Yadava, M.G., R. Krishnan (2022): The Indian monsoon variability during the last two millennia and links to the tropical equatorial Pacific. Clim. Dyn., https://doi.org/ 10.1007/ s00382-022-06513-9
17. Gokul,T., R.K.Vellore, D.C.Ayantika, R.Krishnan, D.Hingmire (2022): Sensitivity of PBL parameterizations on the marine layer cloud simulations in the southern Indian Ocean. Meteorol. Atmos. Physics, https://doi.org/10.1007/s00703-022-00889-3
18. P. Swapna, P. Sreeraj, N. Sandeep, J. Jyoti, R. Krishnan, A.G. Prajeesh, D.C. Ayantika and Manmeet Singh (2022): Increasing frequency of extremely severe cyclonic storms in the north Indian Ocean by anthropogenic warming and southwest monsoon weakening. Geophy. Res. Lett., 49, e2021GL094650. https://doi.org/10.1029/2021GL094650
19. N. Sandeep, P. Swapna, R. Krishnan, R. Farneti, F. Kucharski, A. Modi, A.G. Prajeesh, D.C. Ayantika, Manmeet Singh (2022): On the weakening association between South Asian monsoon and Atlantic multidecadal oscillation. Clim. Dyn., https://doi.org/10.1007/s00382-022-06224-1
20. Chirag Dhara, R. Krishnan (2022): Advancing South Asian monsoon climate change projections: Challenges and Opportunities. J. Ind. Geophys. Union, 26 (4), 245-257.
21. A.G. Prajeesh, P. Swapna, R. Krishnan, D.C. Ayantika, N. Sandeep, Manmeet Singh, M. Aditi, I. Sandip (2021): The Indian summer monsoon and Indian Ocean dipole connection in the IITM Earth System Model (IITM-ESM). Clim.Dyn., https://doi.org/10.1007/s00382-021-05999-z
22. Dipti Hingmire, R. K. Vellore, R. Krishnan, M. Singh, A. Metya, T. Gokul, D.C. Ayantika (2021): Climate change response in wintertime widespread fog conditions over the Indo-Gangetic plains. Clim. Dyn., https://doi.org/10.1007/s00382-021-06030-1
23. Ayantika Dey Choudhury, R. Krishnan, M. Singh, P. Swapna, N. Sandeep, A.G.Prajeesh, R.K. Vellore (2021): Understanding the combined effects of global warming and anthropogenic aerosol forcing on the South Asian monsoon. Clim. Dyn., https://doi.org/10.1007/s00382-020-05551-5.
24. Bhupendra Singh Bahadur, R. Krishnan, et al., (2021): Linkage of water vapor distribution in the lower stratosphere to organized Asian summer monsoon convection. Clim. Dyn., https://doi.org/10.1007/s00382-021-05772-2
25. M. Mujumdar, M.M. Goswami, R. Morrison, J.G. Evans, N. Ganeshi, S.S. Sabade, R. Krishnan, S.N. Patil (2021): A study of field-scale soil moisture variability using the Cosmic-ray Soil Moisture Observing System (COSMOS) at IITM Pune Site. J. Hydrology, 597, 126102, ISSN 0022-1694, https://doi.org/10.1016/j.jhydrol.2021.12610
26. Phanindra P Reddy, Naveen Gandhi and R. Krishnan (2021): Review of speleothem records of the late Holocene: Indian summer monsoon variability and interplay between the solar & oceanic forcing. Quaternary International, https://doi.org/10.1016/j.quaint.2021.06.018
27. Herve Douville, Krishnan Raghavan, James Renwick et al., (2021) Water Cycle Changes.  Chapter 8, Intergovernmental Panel for Climate Change (IPCC), Working Group 1 (WG1), Sixth Assessment Report (AR6).  In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu and B. Zhou (eds.)]. Cambridge University Press (In Press).
28. Allan, R.P., P.A. Arias,…G-K. Plattner, Krishnan Raghavan, R. Ranasinghe, …K. Zickfeld, (Drafting Authors). IPCC 2021: Summary for Policymakers. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu and B. Zhou (eds.)]. Cambridge University Press (In Press).
29. Arias, P. A., N. Bellouin, … A. Pirani, Krishnan Raghavan, R. Ranasinghe, … K. Zickfeld, 2021, IPCC 2021: WG1 Technical Summary. In: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu and B. Zhou (eds.)]. Cambridge University Press (In Press).
30. J.M. Slingo, P. Baeur, S. Bony, G. Flato, G. Hegerl, J. Hesselbjerg, J. Hurrel, C. Jakob, V. Kattsov, M. Kimoto, J. Marotzke, Krishnan Raghavan, T. Sheperd, G. Stephens, B. Stevens, T. Stocker, R. Sutton, T. Zhou (2021): CLIMATE CHANGE: SCIENCE AND SOLUTIONS – BRIEFING 1 :  Next generation climate models - A step change for net zero and climate adaption. The Royal Society, UK, pp 1-11.
31. R. Krishnan, J. Sanjay, C. Gnanaseelan, M. Mujumdar, A. Kulkarni and S. Chakraborty (2020): Assessment of Climate Change over the Indian Region – A Report of the Ministry of Earth Sciences (MoES), Government of India: Eds. Springer.
32. Manmeet Singh, R. Krishnan, B. Goswami, A.D. Choudhury, P. Swapna, R. Vellore, A.G. Prajeesh, N. Sandeep, C. Venkataraman, R.V. Donner, N. Marwan, J. Kurths (2020): Fingerprint of volcanic forcing on the ENSO-Indian monsoon coupling. Science Advances, 6, eaba8164.
33. Borgaonkar H.P., Sabin T.P., Krishnan R. (2020) Deciphering Climate Variability over Western Himalaya Using Instrumental and Tree-Ring Records. In: Dimri A., Bookhagen B., Stoffel M., Yasunari T. (eds) Himalayan Weather and Climate and their Impact on the Environment. Springer, Cham
34. Di Capua, G., Runge, J., Donner, R. V., van den Hurk, B., Turner, A. G., Vellore, R., Krishnan, R., and Coumou, D.: Dominant patterns of interaction between the tropics and mid-latitudes in boreal summer: causal relationships and the role of timescales, Weather and Climate Dynamics, 1, 519–539, https://doi.org/10.5194/wcd-1-519-2020, 2020.
35. B Wang, M. Biasutti, M.P. Byrne, C. Castro, C.-P. Chang, A. Kitoh, R. Krishnan, et al. (2020):  Monsoons Climate Change Assessment. Bull. Amer. Met. Soc., https://doi.org/10.1175/ BAMS-D-19-0335.1.
36. N.G. Ganeshi, M. Mujumdar, R. Krishnan, M. Goswami (2020): Understanding the linkage between soil moisture variability and temperature extremes over the Indian region. J. Hydrology, 589, https://doi.org/10.1016/j.jhydrol.2020.125183.
37. R. Krishnan, T.P. Sabin, Aswin Sagar, P. Swapna, Ayantika Dey Choudhury (2020): South Asian Monsoon Climate Change Projections. CLIVAR Exchanges, 79, 50-54, DOI: 10.36071/clivar.79.2020.
38. G. Di Capua, M. Kretschmer, R.V. Donner, B. van den Hurk, R. Vellore, R. Krishnan, D. Coumou (2020): Tropical and mid-latitude teleconnections interacting with the Indian summer monsoon rainfall: a theory-guided causal effect network approach. Earth Syst. Dyn., 11, 17–34. https://doi.org/10.5194/esd-11-17-2020
39. Sandeep, N., Swapna, P., Krishnan, R.. et al. South Asian monsoon response to weakening of Atlantic meridional overturning circulation in a warming climate. Clim Dyn 54, 3507–3524 (2020). https://doi.org/10.1007/s00382-020-05180-y
40. Priya, P., R.Krishnan, M. Mujumdar (2020): Uncertainties in river discharge simulations of the Upper Indus basin in the Western Himalayas. J.Earth.Sys.Sci., 129, 150, https:// doi.org/10.1007/s12040-020-01409-w.
41. R. Krishnan, AB. Shreshta and G. Ren (2019): Unravelling climate change in the Hindu Kush Himalaya: Rapid warming in the mountains and increasing extremes. Lead Authors: R. Rajbhandari, S. Saeed, J. Sanjay, MA. Syed, R. Vellore, Y. Xu, Q.-L You, Y. Ren.  Contributing Authors: AP. Dimri, A. Lutz, P. Singh, X. Sun, Y. Zhan. Chapter 3: The Hindu Kush Himalaya Assessment - Mountains, Climate Change, Sustainability and People, pp 57-96, Eds. P. Wester, A. Mishra, A. Mukherji, A.B. Shrestha, Springer Open.
42. R. Krishnan, P. Swapna, Ramesh Vellore, Sandeep Narayanasetti, A.G. Prajeesh, Ayantika Dey Choudhury, Manmeet Singh, T.P. Sabin, J. Sanjay (2019): The IITM Earth System Model (ESM): Development and Future Roadmap. Chapter 9 in the book: Current trends in the representation of physical processes in weather and climate models, pp 183-196, Editors. David A. Randall, J. Srinivasan, Ravi Nanjundiah, Parthasarathy Mukhopadhyay. Springer Atmospheric Sciences, https://doi.org/10.1007/978-981-13-3396-5_9.
43. Umakanth, U., Vellore, R.K., Krishnan, R., Choudhury, A.D., J.S.H. Bisht, G.Di Capua, D. Coumou, R.D. Donner (2019): Meridionally Extending Anomalous Wave Train over Asia During Breaks in the Indian Summer Monsoon. Earth Syst Environ 3, 353–366. https://doi.org/10.1007/s41748-019-00119-8.
44. G. Di Capua, M. Kretschmer, J. Runge, A. Alessandri, R.V. Donner, B. van den Hurk, R. Vellore, R. Krishnan and D. Coumou (2019): Long-lead statistical forecasts of the Indian summer monsoon rainfall based on causal precursors. Weather and Forecasting, https://doi.org/10.1175/WAF-D-19-0002.1.
45. Jyoti, J., P.Swapna, R. Krishnan and C.V. Naidu (2019): Pacific modulation of accelerated south Indian Ocean sea level rise during the early 21st Century. Clim Dyn 53, 4413–4432. https://doi.org/10.1007/s00382-019-04795-0
46. Vellore, R.K., Bisht, J.S., Krishnan, R.,  Umakanth Uppara, G. Di Capua, D. Coumou (2019): Sub-synoptic circulation variability in the Himalayan extreme precipitation event during June 2013. Meteorol Atmos Phys., https://doi.org/10.1007/s00703-019-00713-5.
47. Kurths, J., A. Agarwal, R. Shukla, N. Marwan, M. Rathinasamy, L. Caesar, R. Krishnan and B. Merz (2019): Unravelling the spatial diversity of Indian precipitation teleconnections via a non-linear multi-scale approach. Nonlin. Processes Geophys., 26, 251-266,  https://doi.org/10.5194/npg-26-251-2019
48. Nidheesh, A.G., Lengaigne, M., Vialard, J., T. Izumo, A.S. Unnikrishnan, R. Krishnan (2019): Natural decadal sea-level variability in the Indian Ocean: lessons from CMIP models. Clim Dyn., 53, 5653–5673. https://doi.org/10.1007/s00382-019-04885-z.
49. Vishnu, S., Sanjay, J. and Krishnan, R. Assessment of climatological tropical cyclone activity over the north Indian Ocean in the CORDEX-South Asia regional climate models. Clim Dyn., 53, 5101–5118 (2019). https://doi.org/10.1007/s00382-019-04852-8.
50. Rao, S.A. et al (2019): MONSOON MISSION - A Targeted Activity to Improve Monsoon Prediction across Scales. Bulletin of American Meteorological Society, https://doi.org/10.1175/BAMS-D-17-0330.1
51. R. Krishnan, TP. Sabin, RK. Madhura, R. Vellore, M. Mujumdar, J. Sanjay, S. Nayak, M. Rajeevan (2019): Non-monsoonal precipitation response over the Western Himalayas to Climate Change. Climate Dynamics, 52, 4091-4109, DOI: 10.1007/s00382-018-4357-2.
52. M.V.S. Ramarao, J. Sanjay, R. Krishnan, M. Mujumdar, Amir Bazaz and Aromar Revi (2019): On observed aridity changes over the semiarid regions of India in a warming climate. Theoretical & Applied Climatology, 136 (1-2), 693-702, https://doi.org/10.1007/s00704-018-2513-6.
53. Michel d S. Mesquita, Yvan J. Osolini, Indrani Pal, Vidyunmala Veldore, Lu Li, Krishnan Raghavan, Ashwini M. Panandiker, Vivekanand Honnungar, David Gochis, John F. Burkhart (2019) Challenges in forecasting water resources of the Indus river basin: Lessons from the analysis and modeling of atmospheric and hydrological processes. Chapter 2 of Book: Indus River Basin: Water Security and Sustainability, pp 57-83 – Eds: Sadiq I. Khan, Thomas E. Adams III, Elsevier, Netherlands.
54. Dipti Hingmire, R. Vellore, R. Krishnan, N.V.Ashtikar, Bhupendra B Singh, S. Sabade, R. K. Madhura (2018): Widespread fog over the Indo-Gangetic plains and possible links to boreal winter teleconnections. Clim Dyn, https://doi.org/10.1007/s00382-018-4458-y.
55. Ayantika Dey Choudhury, R. Krishnan, MVS. Ramarao, R. Vellore, M. Singh and B. Mapes (2018): A phenomenological paradigm for mid-tropospheric cyclogenesis in the Indian summer monsoon. J. Atmos. Sci., 75, 2931-2954, DOI: 10.1175/JAS-D-17-0356.1.
56. H.P. Borgaonkar, N. Gandhi, S. Ram and R. Krishnan (2018): Tree-ring reconstruction of July-September summer temperature for North Sikkim, Eastern Himalaya. Palaeogeography, Palaeoclimatology, Palaeoecology (PALEO-3), 504: 125-135, https://doi.org/10.1016/ j.palaeo.2018.05.018.
57. N. Sinha, N. Gandhi, S. Chakraborty, R. Krishnan, M.G. Yadava and R. Ramesh (2018): Abrupt climate change at ~2800 Yr BP evidenced by high resolution oxygen isotopic record of a stalagmite from peninsular India. Holocene, 28, 1720-1730, https://doi.org/10.1177/ 0959683618788647.
58. P. Swapna, R. Krishnan, N. Sandeep, A.G. Prajeesh, Ayantika Dey Choudhury, M. Singh, R. Vellore (2018): Long-term climate simulations using the IITM Earth System Model (IITM-ESMv2) with focus on the South Asian Monsoon. Journal of Advances in Modeling Earth System (JAMES), 10, 1127-1149, https://doi.org/10.1029/2017MS001262.
59. P.K. Mishra, S. Prasad, N. Marwan, A. Anoop, R. Krishnan, B. Gaye, N. Basavaiah, M. Stebich, P. Menzel, N. Riedel (2018): Contrasting pattern of hydrological changes during the past two millennia from central and northern India: Regional climate difference or anthropogenic impact?  Global and Planetary Change, 161, 97-107.
60. H. Varikoden, M Mujumdar, JV Revadekar, KP Sooraj, MVS Ramarao, J Sanjay, R Krishnan (2018): Assessment of regional downscaling simulations for long term mean, excess and deficit Indian summer monsoons. Global and Planetary Change, 162, 28-38.
61. S. Fadnavis, C. Roy, R. Chattopadhyay, CE. Sioris, A. Rap, R. Muller, K. Ravi Kumar, R. Krishnan (2018): Transport of Asian trace gases via eddy shedding from the Asian summer monsoon anticyclone and associated impacts on ozone heating rates. Atmospheric Chemistry and Physics, 18, 11493-11506, https://doi.org/10.5194/acp-18-11493-2018.
62. P. Swapna, J. Jyoti, R. Krishnan, N. Sandeep, S.M. Griffies (2017): Multidecadal weakening of Indian summer monsoon circulation induces an increasing Northern Indian Ocean Sea Level. Geophy. Res. Lett., 44, 10560-10572. https://doi.org/10.1002/ 2017GL074706.
63. J. Sanjay, R. Krishnan, AB. Shrestha, R. Rajbhandari, G.-Y. Ren (2017): Downscaled climate change projections for the Hindu Kush Himalayan region using CORDEX South Asia regional climate models. Advances in Climate Change Research. 8(3), 185-198. https://doi.org/ 10.1016/j.accre.2017.08.003.
64. Q.-L. You, G-Y. Ren, Y-Q. Zhang, Y-Y. Ren, X-B Sun, Y-J. Zhan, AB. Shrestha, R. Krishnan (2017): An overview of studies of observed climate change in the Hindu Kush Himalayan (HKH) region. Advances in Climate Change Research. 8(3), 141-147. https://doi.org/10.1016/ j.accre.2017.04.001.
65. Priya, P., R. Krishnan, M. Mujumdar and R.A. Houze (2017): Changing monsoon and midlatitude circulation interactions over the Western Himalayas and possible links to occurrences of extreme precipitation. Climate Dynamics, 49 (7-8), 2351-2364. DOI 10.1007/s00382-016-3458-z.
66. JV. Ratnam, SK. Behera, R. Krishnan, T. Doi, SB. Ratna (2017): Sensitivity of Indian summer monsoon simulation to physical parameterization schemes in the WRF model. Climate Research, 74, 43-66. https://doi.org/10.3354/cr01484.
67. Gutowski, W.J., F. Giorgi, B. Timbal, A. Frigon, D. Jacob, H-S. Kang, R. Krishnan, B. Lee, C. Lennard, G.Nikulin, E. O’Rourke, M. Rixen, S. Solman, T.Stephenson and F.Tangang (2016): WCRP COORDINATED REGIONAL DOWNSCALING EXPERIMENT (CORDEX): A Diagnostic MIP for CMIP6. Geosci. Model Dev., 9, 4087-4095, DOI: 10.5194/gmd-9-4087-2016.
68. J. Sanjay, M.V.S. Ramarao, M. Mujumdar and R. Krishnan (2016):  Regional Climate Change Scenarios.  Chapter 16 in the book: Observed Climate Variability and Change over the Indian Region. Editors: M. Rajeevan and Shailesh Nayak.  Springer Publications.
69. M. Mujumdar, K.P. Sooraj, R. Krishnan, B. Preethi, M.K. Joshi, H. Varikoden, B.B. Singh and M. Rajeevan (2016):  Anomalous convective activity over sub-tropical east Pacific during 2015 and associated boreal summer monsoon teleconnection. Climate Dynamics, DOI:10.1007/ s0038201633212.
70. B. Preethi, M. Mujumdar, R.H. Kripalani, A. Prabhu and R. Krishnan (2016): Recent trends and tele-connections among South and East Asian summer monsoons in a warming environment. Climate Dynamics, DOI: 10.1007/s00382-016-3218.
71. N. Sandeep, P. Swapna, K. Ashok, J. Jyoti and R. Krishnan (2016): Changes in biological productivity in the southern subtropical Indian Ocean in recent decades.  Nature Scientific Reports, 6, DOI:10.1038/srep27467.
72. R. Krishnan, T.P. Sabin, R. Vellore, M. Mujumdar, J. Sanjay, B.N. Goswami, F. Hourdin, J.-L. Dufresne and P. Terray (2016): Deciphering the desiccation trend of the South Asian monsoon hydroclimate in a warming world.  Clim. Dyn., 47, 1007-1027, DOI:10.1007/s00382-015-2886-5.
73. M.V.S. Ramarao, J. Sanjay, R. Krishnan (2016):  Modulation of summer monsoon sub-seasonal surface air temperature over India by soil moisture-temperature coupling. Mausam, 67 (1). 53-66.
74. M.d.S. Mesquita, V. Veldore, L. Li, R. Krishnan, Y. Orsolini, M.V.S. Ramarao and E. Viste (2016): Forecasting India's water future. Earth and Space Science News EoS, 97, doi:10.1029/2016EO049099.
75. M.V.S. Ramarao, R. Krishnan, J. Sanjay and T.P. Sabin (2015):  Understanding land surface response to changing South Asian monsoon in a warming climate.  Earth System Dynamics, 6, 569-582. DOI:10.5194/esd-6-569-2015.
76. R.Vellore,  M.L. Kaplan, R. Krishnan, J.M. Lewis, S. Sabade, N. Deshpande, B.B. Singh, R. K. Madhura, M.V.S. Ramarao (2015):  Monsoon-extratropical circulation interactions in Himalayan extreme rainfall.  Climate Dynamics, DOI:10.1007/s00382-015-2784-x.
77. P. Priya, M. Mujumdar, T.P. Sabin, P. Terray and R. Krishnan (2015): Impacts of Indo-Pacific sea surface temperature anomalies on the summer monsoon circulation and heavy precipitation over the Indo-Pak region during 2010. J. Climate, 28, 3714-3730.
78. Kim, J., J. Sanjay, D. Waliser, C. Mattmann, M. Boustani, H. Lee, P. Loikith, M.V.S. Rama Rao and R. Krishnan (2015) Uncertainties in Estimating Spatial and Interannual Variations in Precipitation Climatology in the India-Tibet Region from Multiple Gridded Precipitation Datasets.  Int. J. Climatol.,  DOI: 10.1002/joc.4306
79. P. Swapna, M. Roxy, A. Krishnamurthy, K. Kulkarni, P. Prajeesh, K. Ashok, R. Krishnan, S. Moorthi, A. Kumar and B.N. Goswami (2014): The IITM Earth System Model: Transformation of a seasonal prediction model to a long term climate model.  Bull. Amer. Meteorol. Soc., August 2015, 1351-1367, DOI: 10.1175/BAMS-D-13-00276-1.
80. Madhura R, R. Krishnan, J.V. Revadekar, M. Mujumdar and B.N. Goswami (2014): Changes in western disturbances over the Western Himalayas in a warming environment. Climate Dynamics, DOI: 10.1007/s00382-014-2166-9.
81. A.K. Singhvi and R. Krishnan (2014):  Past and present climate of India.  Chapter in book “Landscapes and Landforms of India.  Editor:  Vishwas S. Kale, Springer Verlag.
82. Vimal Mishra, D. Kumar, A.R. Ganguly, J. Sanjay, M. Mujumdar, R. Krishnan and R.D. Shah (2014): Reliability of Indian precipitation extremes from regional and global climate models. J. Geophy. Res., DOI: 10.1002/2014JD021636.
83. R. Vellore, R. Krishnan, J. Pendharkar, Ayantika Dey Choudhury and T.P. Sabin (2014): On anomalous precipitation enhancement over the Himalayan foothills during monsoon breaks. Climate Dynamics, DOI: 10.1007/s00382-013-2024-1.
84. Sushma Prasad, A. Anoop, N. Riedel, S. Sarkar, P. Menzel, N. Basavaiah, R. Krishnan, D. Fuller, B. Plessen, B. Gaye, U. Rohl, H. Wilkes, D. Sachse, R. Sawant, M. G. Wiesner, M. Stebich (2014):  Prolonged monsoon droughts and links to Indo-Pacific warm pool: A Holocene record from Lonar Lake, central India.  Earth & Planetary Science Letters, 391, 171-182.
85. P. Swapna, R. Krishnan and J. M. Wallace (2014): Indian Ocean and monsoon coupled interactions in a warming environment. Climate Dynamics, 42, 2439-2454, DOI: 10.1007/s00382-013-1787-8.
86. M. L. Kaplan, Ramesh Vellore, J.M. Lewis, S.J. Underwood, P. M. Pauley, J. E. Martin, R. Rabin and R. Krishnan (2013): Subtropical polar jet interactions in Southern Plains dust storms.  J. Geophys. Res., 118, 12893-12914, doi: 10.1002/2013JD020345.
87. R. Krishnan, T.P. Sabin, Ayantika Dey Choudhury, M. Sugi, A. Kitoh, H. Murakami, A. Turner, J.M. Slingo and K. Rajendran (2013): Will the South Asian monsoon overturning circulation stabilize any further?  Climate Dynamics,  40, 187-211, DOI: 10.1007/s00382-012-1317-0
88. T.P. Sabin, R. Krishnan, J. Ghattas, S. Denvil, J-L. Dufresne, F. Hourdin and T. Pascal (2013): High resolution simulation of the South Asian monsoon using a variable resolution global climate model. Climate Dynamics, DOI: 10.1007/s00382-012-1658-8.
89. D. Raje, P. Priya, R. Krishnan (2013): Macroscale hydrological modeling approach for study of large scale hydrologic impacts under climate change in Indian river basins. Hydrological Processes, DOI: 10.1002/hyp.9731.
90. A. Anoop,S. Prasad,  R. Krishnan, R. Naumann, P. Dulski (2013):  Intensified monsoon and spatiotemporal changes in precipitation patterns in the NW Himalayas during the early-mid Holocene.  Quaternary International, 313-314, 74-84.
91. M.L. Kaplan, Ramesh Vellore, J.M. Lewis, S.J. Underwood, P.M. Pauley, J.E. Martin and R. Krishnan (2013): Re-examination of the I-5 dust storm. J. Geophys. Res, 118, 627-642, DOI: 10.1002/jgrd.50131.
92. A. Kulkarni, S. Patwardhan, K. Krishna Kumar, K. Ashok and R. Krishnan (2013): Projected climate change over Hindu Kush-Himalayan region using high resolution regional climate model PRECIS, Mountain Research Development, 33:2, 142-151.
93. B.N. Goswami and R. Krishnan (2013):  Opportunities and challenges in monsoon prediction in a changing climate - Editorial Special OCHAMP Issue, Clim.Dyn., 41, DOI:10.1007/s00382-013-1835-4, 1.
94. M. Roxy, Y. Tanimoto, B. Preethi, T. Pascal and R.Krishnan (2012):  Intraseasonal SST-precipitation relationship and its spatial variability over the tropical summer monsoon region. Climate Dynamics, DOI: 10.1007/s00382-012-1547-1.
95. D. Raje and R. Krishnan (2012): Bayesian parameter uncertainty modeling in a macroscale hydrologic model and its impact on Indian river basin hydrology under climate change. Water Resources Research (AGU), 48, W08522, DOI: 10.1029/2011/WR011123.
96. Mujumdar, M., B. Preethi, T.P. Sabin, K. Ashok, S. Saeed, D.S. Pai and R. Krishnan (2012): The Asian summer monsoon response to the La Nina event of 2010.  Meteorol. Applications, 19 (2), 216-225.
97. Samala, B.K., R. Krishnan and Roxy Mathew (2012): Assessment of one month forecasts of weak Indian monsoons based on the NCEP climate forecast system. Meteorological Applications, 19 (2), 189 – 199.
98. K. Rajendran, A. Kitoh, J. Srinivasan, R. Mizuta and R. Krishnan (2012): Monsoon circulation interaction with Western Ghats orography under changing climate: Projection by a 20-km mesh AGCM. Theor. Appl. Climatol., 110 (4), 555-571.
99. Ayantika Dey Choudhury and R. Krishnan (2011): Dynamical response of the South Asian monsoon trough to latent heating from stratiform and convective precipitation.  Journal of Atmospheric Sciences, 68, 1347 – 1363.
100. Pradhan, P.K., K. Ashok, B. Preethi, R. Krishnan and A. K. Sahai (2011): Modoki, IOD and Western North Pacific typhoons: Possible implications for extreme events. J. Geophy. Res., 116, D18108, 1-12, DOI: 10.1029/2011JD015666.
101. Saeed S., W. A. Muller, S. Hagemann, D. Jacob, M. Mujumdar and R. Krishnan (2011): Precipitation variability over the South Asian monsoon heat low and associated teleconnections. Geophysical Research Lett. 38, L08702, 1-5, DOI:10.1029/2011GL046984.
102. R. Krishnan, Suchitra Sundaram, Vinay Kumar, P. Swapna, Ayantika Dey Choudhury and M. Mujumdar (2011): The crucial role of ocean-atmosphere coupling on the Indian monsoon anomalous response during dipole events. Climate Dynamics, 37, 1-17, DOI: 10.1007/s00382-010-0830-2.
103. R. Krishnan, Ayantika Dey Choudhury, Vinay Kumar and Samir Pokhrel (2011): The long-lived monsoon depressions of 2006 and their linkage with the Indian Ocean Dipole. International Journal of Climatology. 30, 1334 – 1352, DOI: 10.1002/joc.2156
104. R. Krishnan, Ayantika Dey Choudhury, R. Chattopadhyay and M. Mujumdar (2011): Monsoon simulation. IMD Monograph – Edited by AVM (Dr.) Ajit Tyagi. India Meteorological Department.
105. Suchitra Sundaram, R. Krishnan, Ayantika Dey Choudhury and P. Swapna (2010): Dynamics of intensification of the boreal summer monsoon flow during IOD events – 1994 a case study. Meteorology and Atmospheric Physics, 107 (1), 17-31.
106. R. Krishnan, Varun Sheel and S.K. Dash (2010): Dynamics of the atmospheric general circulation.  Chapter 4 of the book “Modelling of Planetary Atmospheres” – Ed. S.A. Haider, Varun Sheel and Shyam Lal., Macmillan Publishers India Ltd, pp 203-263.
107. R. Krishnan, Vinay Kumar, M. Sugi and J. Yoshimura (2009): Internal feedbacks from monsoon-midlatitude interactions during droughts in the Indian summer monsoon. Journal of Atmospheric Sciences, 66 (3), 553-578.
108. R. Krishnan and P. Swapna (2009): Significant influence of the boreal summer monsoon flow on the Indian Ocean response during dipole events.  Journal of Climate, 22 (21), 5611-5634.
109. Ramesh Kumar, M.R., R. Krishnan, S. Sankar, A.S. Unnikrishnan and D.S. Pai (2009): Increasing trend of “break-monsoon” conditions over India – Role of ocean-atmosphere processes in the Indian Ocean.  IEEE Geoscience and Remote Sensing Letters, 6, 332-336.
110. P. Swapna and R. Krishnan (2008): Equatorial undercurrents associated with Indian Ocean Dipole events during contrasting summer monsoons. Geophysical Research Letters, Vol. 35, L14S04, 2008GL033430.
111. R. Krishnan, T. Venugopal, S.P. Gharge and B.N. Goswami  (2008): Five decades of NWP at the Indian Institute of Tropical Meteorology (IITM) – Chapter in the book “Five decades of Numerical Weather Prediction (NWP) in India” Edited by AVM (Dr.) Ajit Tyagi and Dr. D.R. Pattanaik,  India Met. Dept.
112. P. Janardhan, K. Fujiki, H.S. Sawant, M. Kojima, K. Hakamada and R. Krishnan (2008): The source regions of solar wind disappearance events.  Journal of Geophysical Research, Vol. 113, doi:10.1029 /2007JA012608.
113. M. Mujumdar, Vinay Kumar and R. Krishnan (2007): The Indian summer monsoon drought of 2002 and its linkage with tropical convective activity over northwest Pacific.  Climate Dynamics, DOI: 10.1007/s00382-006-0208-7.
114. B. K. Samala and R. Krishnan (2007) Cloud-radiative impacts on the tropical Indian Ocean associated with the evolution of monsoon breaks. International Journal of Climatology, DOI: 10.1002/joc.1518.
115. R. Krishnan, K.V. Ramesh, B.K. Samala, G. Meyers, J.M. Slingo and M.J. Fennessy (2006) Indian Ocean-Monsoon coupled interactions and impending monsoon droughts. Geophysical Research Letters, 33, L08711, doi:10.1029/ 2006GL025811
116. K.V.Ramesh and R.Krishnan, 2005: Coupling of mixed layer processes and thermocline variations in the Arabian Sea. Journal of Geophysical Research (Oceans), 110, doi: 10.1029 / 2004JC002515.
117. K.V. Ramesh and R.Krishnan (2005) Near-surface and sub-surface oceanic response associated with the evolution of ENSO events.  Int. J. Ecology and Development – Special issue: Mathematical Modelling for Earth System Science, 3, S05, 45-70
118. R. Krishnan and Suchitra Sundaram (2005): On the dynamical extended range predictability of active/break spells of the Indian summer monsoon: Sensitivity to atmospheric initial conditions. Int. J. Ecology and Development – Special issue: Mathematical Modelling for Earth System Science, 3, S05, 1-26.
119. Vinay Kumar and R.Krishnan, 2005: On the association between the Indian summer monsoon and the cyclone activity over Northwest Pacific. Curr. Sci., 88, No.4, 602-612.
120. R.Krishnan M.Mujumdar, V.Vaidya, K.V.Ramesh and V.Satyan, 2003: The abnormal Indian summer monsoon of 2000. Journal of Climate, 16, 1177-1194.
121. R.Krishnan and M.Sugi, 2003: Pacific decadal oscillation and variability of the Indian summer monsoon rainfall. Climate Dynamics, 21, 233-242.
122. R. Krishnan and V.Ramanathan, 2002: Evidence of surface cooling from absorbing aerosols. Geophysical Research Letters, 29, 2002GL014687, 54 (1-4).
123. R.Krishnan and M.Sugi, 2001: Baiu rainfall variability and associated monsoon teleconnections. Journal of Meteorological Society of Japan, 79, 851-860.
124. R.Krishnan, C.Zhang and M.Sugi, 2000: Dynamics of breaks in the Indian summer monsoon. Journal of Atmospheric Sciences, 57, 1354-1372.
125. S.K.Behera, R.Krishnan and T.Yamagata, 1999: Unusual ocean-atmosphere conditions in the tropical Indian ocean during 1994. Geophysical Research Letters, 26, 3001-3004.
126. D.R.Pattnaik, M.Mujumdar, R.Krishnan and V.Satyan, 1999: GCM simulations of the Indian Summer Monsoon, Vayu Mandal, 29, No.1-4, 87-99.
127. R.Krishnan and M. Mujumdar, 1999: Regionally and remotely forced pre-monsoon signals over northern India and neighbourhood.  Quarterly Journal of Royal Meteorological Society, 125, 55-78.
128. R.Krishnan, C.Venkatesan and R.N.Keshavamurty, 1998: Dynamics of upper tropospheric stationary wave anomalies induced by ENSO during the northern summer - A GCM study: Proc. Indian Acad. of Sciences- EPS (Presently Journal of Earth System Science), 107, 65-90.
129. R.Krishnan and C.Venkatesan, 1997: Mechanisms of low frequency intraseasonal oscillations of the Indian summer monsoon. Meteorology and Atmospheric Physics, 62, 101-128.
130. R.Krishnan and S.V.Kasture, 1996: Modulation of low frequency intraseasonal oscillations of northern summer monsoon by El Nino and Southern Oscillation (ENSO). Meteorology and Atmospheric Physics, 60, 237-257.
131. R.Krishnan and S.V.Kasture, 1995: Sensitivity of the tropical nonlinear stationary Kelvin and Rossby waves to the vertical structure of heating. Proc. Indian Academy of Sciences - EPS (Presently Journal of Earth System Science), 104, 579-606.
132. R.K.Bansal, R.Krishnan, C.M.Kishtawal, B.Simon, P.C.Joshi and M.S.Narayanan, 1994: Impact of ERS-1 scatterometer data on the analysis and prediction of a severe cyclonic storm in the Bay of Bengal, Vayu Mandal, 24, 59-66.
133. R.Krishnan, S.V.Kasture and R.N.Keshavamurty, 1992: Northward movement of the 30-50 day mode in an axisymmetric global spectral model. Current Science, 62, 732-735.

Research reports, Newsletters, Conference reports, etc:

1. R. Krishnan, J. Sanjay, Ramesh Vellore, M. Mujumdar, Preethi Bhaskar, T.P. Sabin, Arun B. Shrestha, Dev Niyogi, A.P. Dimri, Gopal Iyengar (2021): Human influence on land surface and regional climate over the Indian subcontinent and Himalaya. Report submitted to the Ministry of Earth Sciences (MoES), Government of India.
2. R. Krishnan, Manmeet Singh, Ramesh Vellore and Milind Mujumdar (2018): Progress and Prospects in Weather and Climate Modeling. Physics News, Indian Physics Association.
3. R. Krishnan and J. Sanjay (2017): Climate Change over India – An Interim Report. Indian Institute of Tropical Meteorology, Ministry of Earth Sciences, pp 1-38.
4. R. Krishnan, B. Singh, R. Vellore, M. Mujumdar, P. Swapna, A. Choudhury, M.  Singh, B. Preethi and M. Rajeevan (2015):  A short perspective on the Mascarene High and the abnormal Indian monsoon during 2015. Indian Ocean Bubble (2), IIOE, Issue No.4, 17-19.
5. Rheinwalt, A., B. Goswami, N. Boers, J. Heitzig, N. Marwan, R. Krishnan and J. Kurths (2014): Teleconnections in Climate Networks: A network of networks approach to investigate the influence of sea surface temperature variability on monsoon systems. Proc. of the Climate Informatics Workshop, NCAR, Boulder, USA, 25 – 26 Sept 2014.
6. R. Krishnan (2013): Weakening trends in the South Asian monsoon. Geography & You, 13 (76), 29-31 (Popular scientific article).
7. H.Koide, K.Onogi, T.Yasunari, K.Masuda, W.Ohfuchi, R.Krishnan, A.Yatagai, H. Kanamaru, 2000: Report on Second International Conference on Renalysis. Tenki (in Japanese), 47, 35-44. Published by Meteorological Society of Japan, Tokyo, Japan.
8. R. Krishnan and P. Swapna (2008): Roles of zonally asymmetric wind forcing and monsoonal flow on the Indian Ocean Dipole evolution.  IITM Research Report, RR-118.
9. Vinay Kumar, R. Krishnan and M. Mujumdar (2006):  Model studies of Indian summer monsoon drought of 2002: Influence of tropical convective activity over northwest Pacific. IITM Research Report.  RR-110, Feb 2006.
10. R.Krishnan and K.V.Ramesh, 2004: Mixed-layer and thermocline interactions associated with monsoonal forcing over the Arabian Sea. IITM Research Report RR.102, pp 1-24.
11. M. Mujumdar, R. Krishnan, A. K. Sahai, S. K. Mandke, J.R. Kulkarni, M. Shinde, Vinay Kumar, S. Sundaram, B.K. Samal, R. H. Kripalani and S.S.Sabade, 2005:  Performance of LRF – Global modeling aspects of Monsoon-2004. Leeward News, Vol. 9 (No.4), pp 5-7.
12. A.K. Sahai, S. K. Mandke, R. Krishnan, Vinay Kumar, M. Mujumdar, J. R. Kulkarni and S. P. Gharge, 2004: Statistical and dynamical prediction of summer monsoon of 2003. Leeward News, Vol.7 (No.4), pp 15-21. News Letter published by Indian Met. Soc., Pune.
13. K.V.Ramesh and R.Krishnan, 2003: Time-mean oceanic response and interannual variability in a global ocean GCM simulation. IITM Research Report, RR.No.100.
14. M.Mujumdar, R.Krishnan and V.Satyan, 2003: Dynamical seasonal prediction experiments of the Indian Summer Monsoon. IITM Research Report, RR-097, pp 1-34.
15. The South Asian Brown Cloud: Climate and Other Environmental Impacts: A UNEP assessment report based on the findings from the Indian Ocean Experiment. A UNEP Assessment Report from Center for Clouds, Chemistry and Climate (C4), Scripps Institution of Oceanography, Univ. of California, San Diego. The Expert Panel: G.R.Cass, S.K.Chhabra, W.D.Collins, P.J.Crutzen, N.Kalra, T.N.Krishnamurti, J.Lelieveld, A.P.Mitra, H.V.Nguyen, V.Ramanathan, J.M.Samet and D.R.Sikka. The UNEP Resource Experts consisted K.Achuta  Rao, C.E.Chung, A.Jayaraman, R. Krishnan, I.A.Podgorny, 2002.
16. R.Krishnan, V.Satyan, M.Mujumdar, S.Mandke, J.R.Kulkarni,  A.K.Sahai, S.P.Gharge, V.Vaidya, K.V.Ramesh and Vinay Kumar, 2001: Ensemble GCM simulations of the Indian Summer Monsoon. CAS/JSC Working Group on Numerical Experimentation Report No.31, WMO/TD No.1069, pp 6.5-6.6. WMO, Geneva, Switzerland.
17. R.Krishnan, M.Mujumdar, V.Vaidya, K.V.Ramesh and V.Satyan, 2001: Modelling studies of the 2000 Indian summer monsoon & extended analysis. IITM RR, RR-091, pp 1-35.
18. M.Mujumdar and R.Krishnan, 2001: Ensemble GCM simulations of the contrasting Indian summer monsoons of 1987 and 1988.IITM Research Report, RR-089, pp 1-33.
19. V. Satyan, M. K. Soman, R. Krishnan, J. R. Kulkarni, A. K. Sahai, S. K. Mandke, K. Ashok, M. Mujumdar and D. R. Pattanaik, 2000: Climate predictability and variability studies using atmospheric general circulation models.  Research Highlights in Earth System Science: Focus on Deep Continental Studies, Glaciology and Atmospheric Sciences, Indian Geological Congress, 1, pp 311-324.  Edited by O.P. Varma and T. M. Mahadevan.
20. R.Krishnan and M.J.Fennessy, 1997: GCM simulations of intraseasonal variability in the Indian summer monsoon. COLA Research Report, 40, pp 1-56. Published by Center for Ocean Land Atmosphere Studies (COLA), Maryland, USA.
21. R.Krishnan, 1998: Interannual Variability of water vapour flux over the Indian summer monsoon region as revealed from the NCEP/NCAR Reanalysis. Proc. of First WCRP Intl Conference on Reanalysis. WCRP-104, 340-343. Published by WMO, Geneva.
22. R.Krishnan and M. Mujumdar, 1997: Regionally and remotely forced precursory signals of the Indian summer monsoon. Proc. of the First WMO Intl.l workshop on Monsoon  Studies, Denpasar, Bali Island, Indonesia, Report No.57, WMO/TD No.786, pp 122-130, Feb 1997. Published by WMO, Geneva, Switzerland.
23. R.Krishnan, R.N.Keshavamurty and S.V.Kasture, 1992: Diagnostic studies of the vorticity balance in the tropical upper atmosphere of a nonlinear global spectral model. Proc. of the National Symposium on Advances in Tropical Meteorology (TROPMET-92), pp 459-469, Feb 1992, Ahmedabad. Publ, Tata McGraw-Hill Publishing Co. Ltd., New Delhi, India.
24. S.V.Kasture, R.Krishnan, R.N.Keshavamurty and V.Satyan, 1992: A model study of the northward propagation of zonal wind shear zone in the monsoon region. Proc. of the Natl Symposium on Advances in Tropical Meteorology (TROPMET-92), pp 441-446, Feb 1992, Ahmedabad, India. Pubisher Tata McGraw-Hill Pub. Co. Ltd., New Delhi, India.

Guidance to Students

He has supervised / co-supervised 19 Ph.D. degrees & 7 Master (M.Sc/M.Tech) dissertations. He offered training lectures in Geophysical Fluid Dynamics & Atmospheric Science