Dr. Sandeep Sahany


Positions held

August 2015 - Present : Assistant Professor
Centre for Atmospheric Sciences, IIT Delhi

August 2014 - August 2015 : Senior Research Scientist
Centre for Climate Research Singapore

February 2014 - July 2014 : Research Scientist
Centre for Climate Research Singapore

October 2009 - February 2014 : Postdoctoral Researcher
University of California Los Angeles

June 2002 - April 2004 : Software Engineer
Infosys Technologies Limited

Research Interests and Topical Expertise

Journal Publications

For a complete list of publications, please visit my Google Scholar Page

Singh, R., P. K. Bal, V. Kumar, S. K. Mishra, S. Sahany, P. Salunke, S. Dash, and R. C. Dhiman, 2019: Numerical Modeling of the Dynamics of Malaria Transmission in a Highly Endemic Region of India. Scientific Reports. 9(1): 11903. DOI: 10.1038/s41598-019-47212-6. [Impact Factor: 4.5]

Pathak, R., S. Sahany, S. K. Mishra, and S. K. Dash, 2019: Precipitation Biases in CMIP5 Models over the South Asian Region. Scientific Reports. 9(1): 9589. DOI: 10.1038/s41598-019-45907-4. [Impact Factor: 4.5]

Jain, S., P. Salunke, S. K. Mishra, and S. Sahany, 2019: Performance of CMIP5 Models for Indian Summer-Monsoon Precipitation and Temperature. Theoretical and Applied Climatology. 137(1-2), 1429-1447. DOI:10.1007/s00704-018-2674-3. [Impact Factor: 2.7]

Anand, A., M. Bhowmick,S. K. Mishra, S. Sahany, and C. V. Reddy Telukuntla, 2019: Response of Indian Monsoon to Increase of Resolution in NCAR-CAM5. Atmospheric Research. 221, 12-26. DOI:10.1016/j.atmosres.2019.01.015. [Impact Factor: 4.0]

Jain, S., P. Salunke, S. K. Mishra, S. Sahany, and N. Choudhary, 2019: Advantage of NEX-GDDP over CMIP5 and CORDEX Data: Indian Summer Monsoon. Atmospheric Research. 228, 152-160. DOI:10.1016/j.atmosres.2019.05.026. [Impact Factor: 4.0]

Bhowmick, M., S. Sahany, and S. K. Mishra, 2019: Projected Precipitation Changes over the South Asian Region for Every 0.5oC Increase in Global Warming. Environmental Research Letters.14(5), 054005. DOI:10.1088/1748-9326/ab1271. [Impact Factor: 6.2]

Jain, S., S. K. Mishra, P. Salunke and S. Sahany, 2019: Importance of the Resolution of Surface Topography Vis-a-Vis Atmospheric and Surface Processes in the Simulation of the Boreal Summer Climate of Himalaya-Tibet Highland. Climate Dynamics, 52(7-8), 4735-4748. DOI:10.1007/s00382-018-4411-0. [Impact Factor: 4.2]

Sahany, S., S. K. Mishra, and P. Salunke, 2019: Historical Simulations and Climate Change Projections over India by NCAR CCSM4: CMIP5 vs. NEX-GDDP. Theoretical and Applied Climatology, 135(3-4), 1423-1433. DOI:10.1007/s00704-018-2455-z. [Impact Factor: 2.7]

Bal, P. K., R. Pathak, S. K. Mishra, and S. Sahany, 2019: Effects of Global Warming and Solar Geoengineering on Precipitation Seasonality. Environmental Research Letters. 14(5), 034011. DOI:10.1088/1748-9326/aafc7d. [Impact Factor: 6.2]

Mishra, S. K., S. Jain, P. Salunke, and S. Sahany, 2019: Past and Future Climate Change over the Himalaya-Tibetan Highland - Inferences from APHRODITE and NEX-GDDP Data. Climatic Change. pp 1-8. DOI: 10.1007/s10584-019-02473-y. [Impact Factor: 4.1]

Sindhu, K. D., and S. Sahany, 2019: Long-term cloud fraction biases in CMIP5 GCMs over India during monsoon season. Theoretical and Applied Climatology. 137(3-4), 2559-2571. DOI: 10.1007/s10584-019-02473-y. [Impact Factor: 2.7]

Mishra, S. K., S. Sahany, P. Salunke, In-Sik Kang, and S. Jain, 2018: Fidelity of CMIP5 Multi Model Mean in Assessing Indian Monsoon Simulations. npj Climate and Atmospheric Sciences, 1(1), 39. DOI:10.1038/s41612-018-0049-1. [Impact Factor: NA]

Dash, Y., S. K. Mishra, S. Sahany, and B. K. Panigrahi, 2018: Indian Summer Monsoon Rainfall Prediction: A Comparison of Iterative and Non-Iterative Approaches. Applied Soft Computing. 70, 1122-1134. DOI:10.1016/j.asoc.2017.08.055. [Impact Factor: 3.9]

Mishra, S. K., S. Sahany, and P. Salunke, 2018: CMIP5 vs. CORDEX over the Indian region: how much do we benefit from dynamical downscaling? Theoretical and Applied Climatology, 133(3-4), 1133-1141. DOI:10.1007/s00704-017-2237-z. [Impact Factor: 2.7]

Sahany, S., S. K. Mishra, R. Pathak, and B. Rajagopalan, 2018: Spatio-Temporal Variability of Seasonality of Rainfall over India. Geophysical Research Letters, 45(14), 7140-7147. DOI:10.1029/2018GL077932. [Impact Factor: 4.3]

Anand, A., S. K. Mishra, S. Sahany, M. Bhowmick, J. S. Rawat, and S. K. Dash, 2018: Indian Summer Monsoon Simulations: Usefulness of Increasing Horizontal Resolution, Manual Tuning, and Semi-Automatic Tuning in Reducing Present-Day Model Biases. Scientific Reports, 8(1), 3522. DOI:10.1038/s41598-018-21865-1. [Impact Factor: 4.5]

Dash, S. K., S. K. Mishra, S. Sahany, V. Venugopal, K. Ashok, and A. Gupta, 2017: Climate Modeling in India: Present Status and Way Forward. Bulletin of the American Meteorological Society. 98, ES183-ES188. DOI:10.1175/BAMS-D-16-0322.1.[Impact Factor: 8.1]

Mishra, S. K., S. Sahany, and P. Salunke, 2017: Linkages between MJO and summer monsoon rainfall over India and surrounding region. Meteorology and Atmospheric Physics, 129, 283-296. DOI:10.1007/s00703-016-0470-0. [Impact Factor: 1.4]

Neelin, J. D., S. Sahany, S. Stechmann, and D. Bernstein, 2017: Global warming precipitation accumulation increases above the current-climate cutoff scale. Proccedings of the National Academy of Sciences. 114(6), 1258-1263. DOI:10.1073/pnas.1615333114. [Impact Factor: 9.5]

Dash, S. K., S. K. Mishra,, S. Sahany, V. Venugopal, A. Karumuri, and A. Gupta, 2017: Brain Storming Workshop on Climate Modeling: National Status. Bulletin of the American Meteorological Society. ES183-ES188. DOI:0.1175/BAMS-D-16-0322.1. [Impact Factor: 8.1]

McBride, J. L., S. Sahany, MEE Hassim, CM Nguyen, SY Lim, R Rahmat W.-K. Cheong, 2015: The 2014 record dry spell at Singapore: an intertropical convergence zone (itcz) drought. Bulletin of the American Meteorological Society. Vol.96, No.12, S126-S130. DOI:10.1175/BAMS-D-15-00117.1. [Impact Factor: 8.1]

Sahany, S., J. D. Neelin, K. Hales, and R. Neale, 2014: Deep Convective Transition Characteristics in the Community Climate System Model and Changes Under Global Warming. Journal of Climate. Vol. 27, 9214-9232. DOI:10.1175/JCLI-D-13-00747.1. [Impact Factor: 4.8]

Tripati, A. K., S. Sahany, D. Pittmann, R. A. Eagle, J. D. Neelin, J. L. Mitchell, and L. Beaufort, 2014: Modern and glacial tropical snowlines controlled by sea surface temperature and atmospheric mixing. Nature Geoscience. Vol. 7, 205-209. DOI:10.1038/ngeo2082. [Impact Factor: 14.4]

Sahany, S., J. D. Neelin, K. Hales, and R. Neale, 2012: Temperature-Moisture Dependence of the Deep Convective Transition as a Constraint on Entrainment in Climate Models. Journal of the Atmospheric Sciences Vol. 69, 1340-1358. DOI:10.1175/JAS-D-11-0164.1. [Impact Factor: 3.2]

Sahany, S., and S. K. Mishra, 2012: Effects of Convective Scale Downdrafts on the Rainfall Simulation in NCAR-CAM3. Theoretical and Applied Climatology. Vol. 107, Issue 3-4, 547-562. DOI:10.1007/s00704-011-0504-y. [Impact Factor: 2.7]

Mishra, S. K., and S. Sahany, 2011: Effects of Time Step Size on the Simulation of Tropical Climate in NCAR-CAM3. Climate Dynamics. Vol. 37, Nos. 3-4, 689-704. DOI:10.1007/s00382-011-0994-4. [Impact Factor: 4.2]

Mishra, S. K., and S. Sahany, 2011: Sensitivity of Kelvin Waves and Madden-Julian Oscillation to Convective Downdrafts in the NCAR-CAM3. Atmospheric Science Letters. Vol. 12, No. 3, 281-287. DOI:10.1002/asl.334. [Impact Factor: 1.8]

Sahany, S., 2010: Fine-Scale Structure Of Diurnal Variations Of Indian Monsoon Rainfall: Observational Analysis And Numerical Modeling. Ph.D.Thesis. Link

Sahany, S., V. Venugopal, and R. S. Nanjundiah, 2010: The 26 July 2005 heavy rainfall event over Mumbai: numerical modeling aspects. Meteorology and Atmospheric Physics.109 (3-4),115-128. DOI:10.1007/s00703-010-0099-3. [Impact Factor: 1.4]

Sahany, S., V. Venugopal, and R. S. Nanjundiah, 2010: Diurnal Scale Signatures of Monsoon Rainfall Over the Indian Region from TRMM Satellite Observations. Journal of Geophysical Research. Vol. 115, D02103. DOI:10.1029/2009JD012644. [Impact Factor: 3.4]

Sahany, S., and R. S. Nanjundiah, 2008: Impact of Convective Downdrafts on Model Simulations Results from Aqua-planet Integrations Annales Geophysicae. Vol. 26, Issue 7, 1877-1887. DOI:10.5194/angeo-26-1877-2008. [Impact Factor: 1.6]


Conference Publications (Presentations/Proceedings/Abstracts)

R. Pathak, S. Sahany, S. K. Mishra, 2019: Formulation of a Physically-based Convective Adjustment Time-Scale: Impact on Climate Simulations over the Maritime Continent. Annual Meeting AOGS, Singapore.

R. Pathak, S. Sahany, S. K. Mishra, 2019: On Precipitation Biases in CMIP5 Models over the Maritime Continent Region. Annual Meeting AOGS, Singapore.

A. Dixit, S. Sahany, S. Choubey, 2019: Role of land use land cover changes in the 2018 Mega-floods of Kerala (India). EGU General Assembly, Vienna, Austria.

R. Singh, P. Salunke, P. K. Bal, H. Dwivedi, S. K.Mishra, S. Sahany, and S. N. Naik, 2018:Analysis of Potential Effects of Climate Change on Malaria Transmission Dynamics in Odisha. TROPMET, Varanasi, India.

S. Jain, S. K. Mishra, P. Salunke, and S. Sahany, 2018: Importance of the Resolution of Surface Topography Vis-à-Vis Atmospheric and Surface Processes in the Simulation of the Climate of Himalaya-Tibet Plateau. TROPMET, Varanasi, India.

P. Salunke, S. Jain, S. K.Mishra, and S. Sahany, 2018: Evaluation of CMIP5 Models for Indian Summer-Monsoon Precipitation and Temperature. TROPMET, Varanasi, India.

B. Rajagopalan, S. Sahany, S. K.Mishra, R. Pathak, 2018: Rainfall Seasonality and its Spatio-temporal Variability over India. AGU Fall Meeting, Washington, USA.

R. Pathak, S. Sahany, and S. K.Mishra, 2018: Common and Unique Precipitation Biases over South Asia in the NCAR CESM vis-à-vis other CMIP5 models. AGU Fall Meeting, Washington, USA.

J. Singh, S. Sahany, 2018: Response of Deciduous Fruit Production in Himachal Pradesh (India) to Global Warming and Geoengineering. AGU Fall Meeting, Washington, USA.

P. Salunke, S. K.Mishra, S. Sahany, K. Gupta, 2017: Realism of Indian Summer Monsoon Simulation in a Quarter Degree Global Climate Model. AGU Fall Meeting, Washington, USA.

R. Pathak, S. Sahany, S. K.Mishra, K. Gupta, P. Salunke, A. Anand, 2016: CMIP5 vs CORDEX in the Context of Indian Monsoon. Annual Meeting AOGS, Beijing, China.

A. Anand, S. K.Mishra, S. Sahany, and T. C. V. Reddy, 2016: Indian Monsoon Simulation in CMIP5 Models. Annual Meeting AOGS, Beijing, China.

S. Sahany, J. D. Neelin, K. Hales and R. B. Neale, 2015: Constraining Convective Entrainment in Climate Models. Annual Meeting AOGS, Singapore.

J. D. Neelin, P. C. Loikith, S. N. Stechmann, S. Sahany, D. N. Bernstein, ... 2015: Implications of dynamics underlying temperature and precipitation distributions for changes in extremes. AGU Fall Meeting Abstracts, USA.

J. D. Neelin, Y.H. Kuo, K. A. Schiro, B. Langenbrunner, C. R. Mechoso, S. Sahany, D. N. Bernstein, ... 2015: Tropical convective onset statistics and establishing causality in the water vapor-precipitation relation. AGU Fall Meeting Abstracts, USA.

J. D. Neelin, S. Sahany, S. N. Stechmann, D. N. Bernstein, 2014: Changes in Large Precipitation Events Under Global Warming. AGU Fall Meeting Abstracts, USA.

S. Sahany, S. Y. Lim, and W.-K. K. Cheong, 2014: Observed and Modelled Rainfall Distributions on Daily and Sub-daily Timescales Over the Western Maritime Continent. AGU Fall Meeting Abstracts, USA.

S. Sahany, J. D. Neelin, K. Hales and R. B. Neale 2014: Climate Processes in CMIP5 : Deep Convective Onset Statistics as Process-Oriented Diagnostics for Climate Models. American Meteorological Society (AMS) 94th Annual Meeting, Atlanta, USA.

S. Sahany, J. D. Neelin, K. Hales and R. B. Neale 2013: Changes to Deep Convection Under Global Warming in the NCAR CCSM. Isaac Held Symposium, 19th Conference on Atmospheric and Oceanic Fluid Dynamics,AMS Newport, Rhode Island, USA.

J. D. Neelin, S. Stechmann, S. Sahany, 2013: Convective onset statistics and event size distributions as process-oriented diagnostics in climate models. AGU Fall Meeting Abstracts USA.

J. D. Neelin, B. Langenbrunner, J. Meyerson, C. Chou, S. Sahany,... 2013: What will it take to bring down uncertainty in predictions of precipitation change? AGU Fall Meeting Abstracts. USA.

D. Pittman, A. K. Tripati,S. Sahany, R. Eagle, J. Neelin, J. M. Eiler, J. Mitchell, ... 2012: Clumped Isotope Temperatures and Entrainment Explain Glacial to Recent Tropospheric Structure over the West Pacific Warm Pool AGU Fall Meeting Abstracts. USA.

S. Sahany, J. D. Neelin, K. Hales and R. B. Neale, 2012: Temperature-Moisture Dependence of the Deep Convective Transition as a Constraint on Entrainment in Climate Models. Annual Meeting AOGS, Singapore.

S. Sahany, J. D. Neelin, K. Hales and R. B. Neale, 2012: Deep Convective Transition in the NCAR CCSM: Present and Future Scenarios. 17th Annual CESM Workshop, Breckenridge, Colorado, USA.

S. Sahany, J. D. Neelin, K. Hales and R. B. Neale, 2012: Temperature-Moisture Dependence of the Deep Convective Transition as a Metric for Intercomparison of Climate Models. American Meteorological Society (AMS) 92nd Annual Meeting, New Orleans, USA.

J. D. Neelin, K. Hales, B. Langenbrunner, J. E. Meyerson, S. Sahany, B. Lintner, R. Neale, O. Peters, C. E. Holloway, B. Tian, C. Chou and S. Stechmann, 2012: Model precipitation uncertainties and constraints on entrainment from convective onset. Workshop on Convection, Water Vapor and Climate, Harvard University, USA.

J. D. Neelin, K. Hales, B. Langenbrunner, J. E. Meyerson, S. Sahany, B. Lintner, R. Neale, O. Peters, C. E. Holloway, B. Tian, C. Chou J. McWilliams, A. Bracco, H. Luo, S. Stechmann, 2012: Tropical rainfall challenges in climate modeling---problems and progress. Workshop on the Physics of Climate Models, Caltech, Pasadena, USA.

J. D. Neelin, S. Sahany, K. Hales, R. Neale, B. Langenbrunner, J. E. Meyerson, 2011: The onset of tropical deep convection: observational metrics for climate models and the role of entrainment. AGU Fall Meeting Abstracts, San Francisco, USA.

J. D. Neelin, K. Hales, O. Peters, B. Lintner, B. Tian, C. Holloway, R. Neale, H. Hsu, J. Tribbia, S. Sahany, , 2010: Tropical rainfall challenges in climate modeling---problems and progress. Atmospheric Model Working Group Meeting, NCAR, Boulder, USA.

S. Sahany, V. Vuruputur, R. S. Nanjundiah, 2009: Numerical Modelling of the Observed Diurnal Cycle of Indian Monsoon Rainfall. AGU Fall Meeting Abstracts, USA.

S. Sahany, V. Venugopal, R. S. Nanjundiah, 2008: Diurnal Cycle Variability of Rainfall Over the Indian Region: Perspectives From the TRMM Satellite. AGU Fall Meeting Abstracts USA.

Teaching

Jan - May, 2016
ASL410: Numerical Simulation of Atmospheric and Oceanic Phenomena   (Jointly with Dr. Saroj Kanta Mishra)