Dr Srivatsan V Raghavan

Srivatsan V Raghavan

Deputy Director (Admin), Tropical Marine Science Institute
Principal Research Fellow
Head, Climate and Water Research Cluster
Email: tmsvs@nus.edu.sg
Phone: +65 6516 1425

– Joint Appointment, Dept. of Geography (Tropical Environmental Change group)
https://www.fas.nus.edu.sg/geog/research/tropical-environmental-change.html

– Core Researcher, NUS Centre for Nature-based Climate Solutions

RESEARCH INTERESTS

Regional Climate Modelling, Climatology and Climate Change, Numerical Weather Forecasting/Nowcasting, Urban Climates, Climate Impacts and Adaptation, Water Resources, Food security, Climate Risk assessments, Sustainability

For information on the research group’s initiatives on numerical weather/climate modelling, please visit: http://www.tmsi.nus.edu.sg/weather/index.php

EDUCATION

PhD                     University College London (UCL), UK    (2008)
M.S.                     Tufts University, USA    (2003)
B.Sc/M.Sc.           University of Madras, India (1997)

TEACHING

‘Climate Change: Processes, Impacts and Responses’, Sem 2, AY19/20; Sem 2, AY 20/21, Sem 2 AY 22/23
‘Weather and Climate’, Special Term 2, AY 19/20 Sem 1, AY 20/21; Sem 2 AY 21/22

CURRENT/PAST RESEARCH PROJECTS

  • Quantifying the Dynamical Downscaling Uncertainty over Southeast Asia in CMIP6 Models: Historical and Future , Centre for Climate Research Singapore (CCRS), 2020-2022
  • Ocean Information and Forecasting Study (OIFS2); Numerical Weather Forecasting applications, Technology Centre for Offshore Marine Singapore (TCOMS), 2020-2022
  • Understanding the low-frequency variability of coastal sea level in Southeast Asia using a regional ocean model and observations (@ TMSI), National Sea Level Program, CCRS-NEA, 2021-2025 (Collaborator)
  • Novel framework for probabilistic sea-level projections for Singapore and surrounding region (@ EOS, NTU), National Sea Level Program, CCRS-NEA, 2021-2024 (Collaborator)
  • Assessing Extreme Sea Level Exposure for Singapore and the Centra Sunda Shelf Region, (@ ASE, NTU), National Sea Level Program, CCRS-NEA, 2021-2024 (Collaborator)
  • Investigating Climate Risk Hazards Due to Extreme Rainfall and Typhoons in the Southeast/ East Asian Region Towards Enhanced Adaptation Measures, 2019-2021, Kyoto University (Japan Society for Promotion of Science (JSPS) -NUS joint collaboration)
  • Evaluation and Inter-comparison of Regional Climate Model simulations of South-East Asian climate: past and future, Centre for Climate Research Singapore, 2018-2020
  • The Southeast Asia Sea Level Programme, Regional Downscaling of winds fields using the WRF model, MOE-NTU Tier 3 Grant, 2020-2021 (NTU Collaboration)
  • Modelling of weather and climate extremes, 2019-2021, Dept. of Civil and Environmental Engineering, NUS
  • Reconstructing the 1877-8 El Niño in Singapore and Malaysia: a multi-disciplinary approach, Singapore Management University Internal Research Grant, 2019-2021 (SMU Collaboration)
  • Provision of Numerical Weather Prediction Data for Testing of Research Analytics Models, National Environment Agency, Singapore, 2018-2019
  • Numerical Urban Climate Modelling for micro-climate applications NUS-School of Design & Environment, 2018-2020
  • Macro index for insurance for the agriculture sector in Indonesia, International Finance Corporation (2017)
  • High Resolution Regional Climate Modelling over Southeast Asia: Center for Environmental Sensing and Modeling (CENSAM), SMART, Singapore (2011-2018)
  • Climate Change Projections and Assessment of Impacts; Modelling and Capacity Building Programme-India-ASEAN Region: ASEAN-India Framework (2016-2018)
  • The Inextricable Climate-Crop Coupling: Is Southeast Asia well prepared On Food Security?: CENSAM SMART (Singapore-MIT Alliance) Research Initiative 2015 (2015-2017)
  • impact of Climate Change on Extreme Rainfall and Drainage Design: TMSI – Monash University (Australia) – Centre for Climate Research Singapore and Singapore Public Utilities Board (2014-2016)
  • High Resolution Regional Climate Change Impact Study over Singapore-Coastal Inundation Risk Map Study: Building and Construction Authority, Singapore (2010-2014)
  • Climate Change Impacts Study over Singapore (Vulnerability Study-Phase I), National Environment Agency, Singapore, 2007 -2009

PROFESSIONAL SERVICE

  • Topic Board Editorial Member (Climatology), Atmosphere, MDPI
  • Editorial Board member, PLOS Climate
  • IPCC Contributing Author, WG 1 of the AR6 Report, Chapter 12
  • Member, Asia Pacific Network (APN) Bulletin’s Editorial Advisory Committee (2017-2018; 2020)
  • Treasurer; Executive Council Member, Asia Oceania Geosciences Society (AOGS) (2016-2018)
  • Singapore (NUS) representative at the ASEAN-India Project on “Enhancing Local Level Climate Change Adaptation in Southeast Asia (Phase 1)” (Nominated by National Environment Agency, Singapore)
  • Represented Singapore at the China-ASEAN Climate Change Meeting, Kunming, China, June 2014 (Nominated by A-STAR, Singapore)
  • Co-author for the ‘Climate Change Technical Primer’ – commissioned by the National Climate Change Secretariat, Prime Minister’s Office, Singapore, 2010
  • Represented Singapore at the 30th IPCC Plenary Session, Antalya, Turkey, April 2009 (Nominated by the Ministry of Environment and Water Resources, Singapore)

INTERNATIONAL/REGIONAL INITIATIVES

  • CORDEX Southeast Asia http://www.rucore.ru.ac.th/seaclid-cordex-phase2
  • Malaysia – UK Cambridge Special Technical group on Climate Downscaling
  • High-Resolution Seasonal Forecast and Downscaling of Climate Change Projections (IPCC AR6), Malaysia
  • Working Group Member: Climate Change, Food Security and Disaster Risk Management, Economic Research Institute of ASEAN and East Asia (ERIA), Jakarta, Indonesia

PUBLICATIONS

Google Scholar https://scholar.google.com/citations?user=01NmXWUAAAAJ

PUBLICATIONSPEER-REVIEWED JOURNALS

  • Gimhan, PGS, P Neluwala, RA Acierto, Raghavan VS (2022): Assessment of WRF microphysics and cumulus parameterizations in simulating heavy rainfall events over Badulu Oya catchment, Sri Lanka, Journal of Water and Climate Change, 13 (12), 4213-4233
  • Teo, H.C., Raghavan, V.S., He, X., Zeng, Z., Cheng, Y., Luo, X., Lechner, A.M., Ashfold, M.J., Lamba, A., Sreekar, R., Zheng, Q., Chen, A. and Koh, L.P. (2022): ‘Large-scale reforestation can increase water yield and reduce drought risk for water insecure regions in the Asia Pacific’, Global Change Biology, https://doi.org/10.1111/gcb.16404.
  • Nguyen, N.S., Kim, D.E., Jia, Y., Raghavan, V.S. and Liong, S.Y. (2022): ‘Application of Multi-Channel Convolutional Neural Network to improve DEM Data in Urban Cities’, Technologies, 10 (3), https://doi.org/10.3390/technologies100
  • Liu, S., Raghavan V.S., Ona, B.J.L and Nguyen, N.S. (2022): ‘Evaluations of the CMIP6 model performance on precipitation over Southeast Asia based on the moisture budget’, International Journal of Climatology, doi:10.1002/joc.7631
  • Dorji, T., Ona, B.J.L. and Raghavan, V.S. (2021): ‘Statistical Analyses on the Seasonal Rainfall Trend and Annual Rainfall Variability in Bhutan’, Scientific Online Letters on the Atmosphere, https://doi.org/10.2151/sola.2021-035
  • He, Y., Wong, N.Y., Nguyen, N.S., Raghavan, V.S., Martin, M., Hii, D.J.C., Yu, Z., and Deng, J. (2020): ‘An Integrated Multiscale and Multiphysics Urban Microclimate Model for Urban Thermal Environment’, Urban Climate, https://doi.org/10.1016/j.uclim.2020.100730
  • Nguyen, N.S., Liu, J., Raghavan, V.S. and Liong, S.Y. (2020): ‘Deriving high spatiotemporal rainfall information over Singapore through dynamic-stochastic modelling’, Stochastic Environmental Research and Risk Assessment, https://doi.org/10.1007/s00477-020-01912-y
  • Ndhlovu, G.Z., Woyessa, Y.E. and Raghavan, V.S. (2020): ‘Generating a High Resolution Climate Scenario over Southern Africa through Regional Climate Modelling’, The International Journal of Climate Change: Impacts and Responses, 12 (4), 29-48, doi:10.18848/1835-7156/CGP/v12i04/29-48Hohl, R., Ze, J., Vu, M.T., Raghavan, V.S and Liong, S.Y. (2020): ‘Using a regional climate model to develop index-based drought insurance for sovereign disaster risk transfer’, Agricultural Finance Review, doi: /10.1108/AFR-02-2020-0020
  • Jiang, Z, *Raghavan, V.S., Hur, J., Sun, Y., Liong, S.Y., Van, P.D.T. and Nguyen, V.Q. (2019): Future changes in rice yields over the Mekong River Delta due to climate change? Alarming or Alerting? Theoretical and Applied Climatology, 137(1), 545-555, doi: 10.1007/s00704-018-2617-z
  • Raghavan, V.S., Hur, J. and Liong, S.Y. (2018): ‘Evaluations of the NASA NEX-GDDP data over Southeast Asia: Past and Future Climates’, Climatic Change, 148:503, doi: 1007/s10584-018-2213-3.
  • Vu, M.T., *Raghavan, V.S., Liu, J. and Liong, S.Y. (2018): ‘Constructing short duration IDF curves using coupled dynamical-statistical approach to assess climate change impacts’, International Journal of Climatology, 38 (6), 2662-2671, /10.1002/joc.5451.
  • Vu, M.T., Raghavan, V.S., Liong, S.Y. and Mishra, A. (2018): ‘Uncertainties in gridded precipitation observations in characterizing spatio-temporal drought and wetness over Vietnam’, International Journal of Climatology, 38 (4), 2067-2081. doi.10/1002/joc.5317
  • Raghavan, V.S., Liu, J., Nguyen, N.S., Vu, M.T. and Liong, S.Y. (2018): ‘Assessment of CMIP5 historical simulations of rainfall over Southeast Asia’, Theoretical and Applied Climatology, 132 (3-4), 989-1002. doi.10.1007/s00704-017-2111-z
  • Sun, Y., Kim, D. E., Wendi, D., Doan, C. D., Raghavan, V. S., Jiang, Z. and Liong, S. Y. (2018): Projected impacts of climate change on stream flow and groundwater of Nee Soon Swamp Forest, Gardens’ Bulletin Singapore, 70, Suppl.1: 175-190. doi: 10.26492/gbs70 (Suppl.1).2018-09
  • Naufan, I., Sivakumar, B., Woldemeskel, F. M., Raghavan, V.S., Vu, M.T. and Liong, S.Y. (2018): ‘Spatial connections in Regional Climate Model rainfall outputs at different temporal scales: Application of network theory’, Journal of Hydrology, 556, 1232-1243. doi: /10.1016/j.jhydrol.2017.05.029
  • Hur, J., *Raghavan, V.S., Nguyen, N.S. and Liong, S.Y. (2018): ‘Are satellite estimates good proxies of gauge precipitation over Singapore?’ Theoretical and Applied Climatology, 132: 921-932. doi: 10.1007/s00704-017-2132-7
  • Ng, H.L., Li., R, Raghavan, V.S. and Liong, S.Y. (2017): ‘Investigating the relationship between Aerosol Optical Depth and Precipitation over Southeast Asia with Relative Humidity as an influencing factor’, Scientific Reports 7 (Nature). doi:10.1038/s41598-017-10858-1. Article number: 13395
  • Vu, M.T., Vo, N.D., Gourbesville, P., Raghavan, V.S. and Liong, S.Y. (2017): ‘Hydro Meteorological Drought Assessment under climate change impact over Vu Gia-Thu Bon river basin, Vietnam’, Hydrological Sciences Journal, 62, 1654-1668. doi: 10.1080/02626667.2017.1346374
  • Raghavan, V.S., Vu, M.T. and Liong, S.Y. (2017): ‘Ensemble climate projections of mean and extreme rainfall over Vietnam using PRECIS’, Global and Planetary Change, 148, 96-104. doi: 10.1016/j.gloplacha.2016.12.003
  • Vu, M.T., Raghavan V.S. and Liong, S.Y. (2017): ‘Deriving short duration rainfall IDF curves from a Regional Climate Model’, Natural Hazards, 85 (3), 1877-1891. 10.1007/s11069-016-2670-9
  • Raghavan, V.S., Vu, M. T. and Liong, S.Y. (2016): ‘Regional Climate Simulations over Vietnam using the WRF model’, Theoretical and Applied Climatology, 126, 161-182. doi:10.1007/s00704-015-1557-0.
  • Vu, M.T., Aribarg, T., Supratid, S., Raghavan, V.S. and Liong, S.Y. (2016): ‘Statistical Downscaling of Rainfall using Artificial Neural Network: Significantly wetter Bangkok?’ Theoretical and Applied Climatology, 126, 453-467. doi: 10.1007/s00704-015-1580-1
  • Vo, N.D., Gourbesville, P., Vu, M.T., Raghavan, V.S. and Liong, S.Y. (2016): ‘A Deterministic Hydrological Approach to Estimate Climate Change Impact On River Flow: Vu Gia-Thu Bon Catchment, Vietnam’, Journal of Hydro-Environment Research, 11, 59-74. doi: /10.1016/j.jher.2015.11.001
  • Vu, M.T., *Raghavan, V.S. and Liong, S.Y. (2016): ‘Use of Regional Climate Models for Proxy Data over Trans-Boundary regions’, Journal of Hydrologic Engineering, 21 (6). dx.doi.org/10.1061/(ASCE)HE.1943-5584.0001342
  • Vu, M.T., Raghavan, V.S. and Liong, S.Y. (2015): ‘Ensemble Climate Projections for hydro-meteorological drought over a river basin in Central Highland, Vietnam,’ KSCE Journal of Engineering, 19 (2), 427-433. doi: 10.1007/s12205-015-0506-x
  • Raghavan, V. S., Vu, M.T. and Liong, S.Y. (2014): ‘Impact of climate change on future stream flow in the Dakbla river basin’, Journal of Hydroinformatics, 16 (1), 231-244. doi: 10.2166/hydro.2013.165
  • Liew, S.C., Raghavan, V.S. and Liong, S.Y. (2014): ‘Development of Intensity-Duration-Frequency Curves at Ungauged Sites: risk management under changing climate’, Geoscience Letters, (Asia Oceania Geosciences Society Journal), 1:8, doi:10.1186/2196-4092-1-8
  • Vu, M.T., Raghavan, V.S., Pham, D.M. and Liong, S.Y. (2014): ‘Investigating Drought over the Central Highland, Vietnam, using Regional Climate Models’, Journal of Hydrology, Special Issue: Drought processes, modelling, and mitigation, 526, 265-273. doi: 1016/j.jhydrol.2014.11.006
  • Liew, S.C., Raghavan, V.S. and Liong, S.Y. (2014): ‘How to construct future IDF curves, under changing climate, for sites with scarce rainfall records?’, Hydrological Processes, 28 (8), 3276-3287. doi:10.1002/hyp.9839
  • Vu, M. T., Raghavan, V.S. and Liong, S.Y. (2012): ‘SWAT use of gridded observations for simulating runoff – A Vietnam river basin study’, Hydrology and Earth System Sciences, 16 (8), 2801-2811. https://doi.org/10.5194/hess-16-2801-2012, 2012
  • Raghavan, V. S., Vu, M. T. and Liong, S.Y. (2012): ‘Assessment of future stream flow over the Sesan catchment of the Lower Mekong Basin in Vietnam’, Hydrological Processes, 26 (24), 3661-3668. doi:10.1002/hyp.8452
  • He, S., Raghavan, V.S., Nguyen, N.S. and Liong, S.Y. (2012): ‘Ensemble rainfall forecasting with numerical weather prediction and radar-based nowcasting models’, Hydrological Processes, 27 (11), 1560-1571. doi:10.1002/hyp.9254
  • Todd, M.C., Washington, R., Raghavan, V.S., Lizcano, G., Knippertz, P. (2008): ‘Regional model simulations of the Bodélé low-level jet of Northern Chad during BoDEx 2005’, Journal of Climate, 21 (5), 995-1012. https://doi.org/10.1175/2007JCLI1766.1

BOOK/ BOOK CHAPTERS

  • Raghavan, V.S., Yik, S.K. and Jiam, C (2020): How can weather index-based crop insurance schemes help achieve food security against natural disasters?, ERIA Discussion paper series, Economic Research Institute for ASEAN and East Asia, Jakarta, Indonesia
  • Tanzil, J.T.I., Ooi, S.K., Tay, S.H.X., Ow, Y.X., Chua, S.C., Clews, E., Raghavan, V.S. and Liong S.Y. (2020): Climate Change: Tropical Marine and Brackish Ecosystems”. In Climate Change and Non-infectious Fish Disorders (Eds. Patrick Woo and George Iwama). CAB International
  • Raghavan, V.S., Jiang, Ze., Hur, J., Liu., J, Nguyen, N.S. and Liong, S.Y. (2019): ‘An assessment of ASEAN food security under the 2°C- 4°C climate change scenarios’, ERIA Discussion paper series, Economic Research Institute for ASEAN and East Asia, Jakarta, Indonesia
  • Raghavan, V.S., Jiang, Ze., Hur, J., Liu., J and Liong, S.Y. (2017): ‘Distributional Impacts of Climate Change and Food Security in Southeast Asia’, ERIA Discussion paper series, ERIA-DP-2016-41, Economic Research Institute for ASEAN and East Asia, Jakarta, Indonesia
  • Nguyen, N.S., He, S., Raghavan, V.S., Doan, D.C. and Liong, S.Y. (2012): ‘Rainfall Forecast with Ensemble Performance of Translation Model and Numerical Weather Prediction’, Advances in Geosciences, Vol. 29, Hydrological Science, World Scientific Publishing Company
  • Vu, M. T., Liong, S. Y., Raghavan, V. S. and Liew, S. C. (2011): ‘A novel methodology for developing inundation maps under climate change scenarios using one-dimensional model’, Advances in Geosciences, Vol. 23, Hydrological Science, World Scientific Publishing Company.

SELECTED SCIENTIFIC/TECHNICAL REPORTS/CONFERENCE PROCEEDINGS

  • Raghavan, V.S., Nguyen, N.S., Hur, J., NG, D.H.L and Liong, S.Y. (2019): ‘Evaluations and Inter-comparisons of Regional Climate Model simulations of Southeast Asian climate: past and future’ – Review of current RCM configurations over SE Asia and Singapore’, Centre for Climate Research Singapore (CCRS), Singapore
  • Dorji, T., Tamang, T.B., Raghavan, V.S., Hur, J. (2019): Analysis of Historical Climate and Climate Projection for Bhutan, Technical Report submitted to the National Center for Hydrology & Meteorology, Royal Government of Bhutan, Thimphu
  • Raghavan, V.S., Hur, J., and Liong, S.Y. (2017): ‘Assessment of climate change using SWAT model over Vietnam’, under the Climate Change Projections and Assessments of Impacts: Modelling and Capacity Building Programme of the ASEAN-India Green Climate Fund commissioned project. Report submitted to the ASEAN Secretariat.
  •  Raghavan, V.S., Hur, J., and Liong, S.Y. (2017): ‘Impacts of climate change on forests over Southeast Asia – A study on the carbon dynamics using the LPJ model’, under the Climate Change Projections and Assessments of Impacts: Modelling and Capacity Building Programme of the ASEAN-India Green Climate Fund commissioned project. Report submitted to the ASEAN Secretariat.
  • Takamatsu, M., Kawasaki, A., Vu, M.T., Raghavan, V.S. and Liong, S.Y. (2017): ‘Assessment of Future Rainfall Change and Its Impact on Water Resources in the Mekong River 3S Sub-basins’, Conference Proceedings of the World Water and Environmental Congress, EWRI 2017, Sacramento, California, USA , May 2017
  •  Raghavan, V.S., Hur, J., Liong, S.Y. (2016): ‘Historical Climate Change, Climate Vulnerability and Climate Change Projections for Singapore and Southeast Asia’, under the Climate Change Projections and Assessments of Impacts: Modelling and Capacity Building Programme of the ASEAN-India Green Climate Fund commissioned project. Report submitted to the ASEAN Secretariat.
  • Liong, S. Y., Sun, Y., Wendi, D., Kim, D.E., Doan, C.D., Raghavan, V.S., Vu, M.T. and Liew, S.C. (2016): Chapter 7- Eco‑hydrological Model of Nee Soon Swamp Forest, Nee Soon Swamp Forest Biodiversity and Hydrology Baseline Studies Phase 2 project commissioned by National Parks, Govt. of Singapore.
  • Liong, S.Y., Nguyen, N.S. and Raghavan, V.S. (2015): Quarterly Reports on ‘Impacts of climate change on extreme rainfall and drainage design’, as a part of the project commissioned by Public Utilities Board, Govt. of Singapore.
  •  Raghavan, V.S. in Raizan, R et al. (2014): A Regional Climate Modelling Experiment for Southeast Asia: Using PRECIS regional climate model and selected CMIP3 Global Climate Models. Technical Report of the Southeast Asia Climate Analyses and Modeling Framework, by Centre for Climate Research Singapore and Hadley Centre, UKMO.
  •  Liong, S.Y. and Raghavan, V.S. (2014): Final Report on ‘High-Resolution Regional Climate Change Impact Study, Vol I, as a part of the Coastal Inundation Risk Map Study for Singapore’ – Submitted to the Building and Construction Authority, Govt. of Singapore.
  •  Liong, S.Y. and Raghavan, V.S. (2009): Final Report on ‘Study on the Climate Change Impacts over Singapore, Vol II, as a part of the Vulnerability Study-Phase I, Submitted to the National Environment Agency, Govt. of Singapore.