Sen Chiao


Sen ChiaoSen Chiao
Professor & Chair

Department of Meteorology and Climate Science
Director, NASA MIRO Center for Applied Atmospheric Research and Education (CAARE)

Phone: (408) 924-5204
Fax: (408) 924-5191

One Washington Square
San Jose, CA 95192-0104

Chiao Research Group Page
Curriculum Vitae


  • Ph.D., 2003, Marine, Earth and Atmospheric Sciences, North Carolina State University

 Research Interests

  • Over 15 years of experience in data analysis and numerical modeling with emphasis on tropical, mesoscale, air quality and urban scale phenomena. My goal is to advance the understanding of fundamental science in the areas of weather and climate change, and their linkages to our environment. My research activities are conducted using many different methods striving to achieve high standards of understanding, depth and completeness.

 Recent Classes

  • Tropical Meteorology (METR 160)
  • Regional Climate Modeling (METR 173)
  • Global Climate Change (METR 112, online)
  • Remote Sensing (METR 155)
  • Numerical Modeling (METR 240)
  • Dynamic Meteorology (METR 121)
  • Synoptic Weather Analysis and Forecasting (METR 171)

Recent Activities 

Published Papers (* denote names of advised students)

Tropical Cyclones

Jury, M. and S. Chiao, R. Cécé, 2019: The intensification of hurricane Maria 2017 in the Antilles, Atmosphere, 10, 590. doi:/10.3390/atmos10100590

Rosado*, K., and S. Chiao, 2018: Assimilation of GPS Radio Occultation data for Tropical Cyclogenesis: A Case Study in the Eastern Atlantic, The Open Atmospheric Science Journal, 12, 33-47, DOI: 10.2174/1874282301812010033.

Jenkins, G., E. A. Brito, E. F. Soares, S. Chiao and co-authors, 2017: Hurricane Fred: Cape Verde's First Hurricane in Modern Times, preparation, observations, impacts and lessons learned, Bulletin of American Meteorological Society, DOI:

Chiao, S., and M. Jury, 2016: Southern Caribbean Hurricane Regional Observations and WRF Model Simulations, International Journal of Marine Science, doi:10.5376/ijms.2016.06.0039.

Folmer, M., R. Pasken, S. Chiao, J. Dunion, and J. Halverson, 2016: The Effect of GPS Dropwindsondes from the NAMMA 2006 Field Campaign on the Simulations of Hurricane Helene, Meteorology and Atmospheric Physics, DOI 10.1007/s00703-016-0452-2.

Chih* C.-H., K-H. Chou, and S. Chiao, 2015: The influence of Tropical cyclone structure on eyewall evolution simulation of Typhoon Sinlaku (2008) crossing Taiwan. Terr. Atmos. Ocean. Sci. DOI: 10.3319/TAO.2015.05.08.01(A).

Centeno*, D., and S. Chiao, 2015: The Footprints of Saharan Air Layer and Lightning on the Formation of Tropical Depressions over the Eastern Atlantic Ocean, Meteorology and Atmospheric Physics, 127, 17-32.

Pelissero*, J., and S. Chiao, 2013: The Impacts of Extratropical Reintensification on North Atlantic Shipping Routes, Met. Apps. doi: 10.1002/met.1410.

Takeuchi*, A., and S. Chiao, 2013: Comparative Case Studies of Tropical Cyclones and Phytoplankton Blooms over Atlantic and Pacific Regions, Earth Interactions, 17, 1-19. doi: 10.1175/2013EI000517.1

Tompkins*, C., and S. Chiao, 2012: Modeling studies of impacts from the Guinea Highlands in relation to tropical cyclogenesis along the West African coast, Meteorology and Atmospheric Physics, 115, 51-72.

Chiao, S., and G. Jenkins, 2010: Numerical investigations on the formation of tropical storm Debby during NAMMA-06. Wea and Forecasting, 25, 866-884.

Chiao, S., C.-Y. Huang and Y.- H. Kuo, 1996:  MM5 numerical simulation of Typhoon Dot (1990). Atmospheric Sciences, 24, 123-144. (In Chinese with English abstract)

Upper air ozone and Air Quality

Gore*, C., and S. Chiao, 2020: Comparisons of Upper Air Ozone at a Coastal and Urban Site and the Impact of Local Surface Urban Emissions, Atmospheric Environment, in review.

Clark*, J., and S. Chiao, 2019: Stratospheric Intrusions in relation to Surface Ozone over Northern California during CABOTS, Journal of Applied Meteorology and Climatology.

Jung, C.H., Y.J. Yoon, J. Um, S.S. Lee, J.Y. Lee, S. Chiao, and Y. P. Kim, 2019: Approximation of most penetrating particle size for fibrous filters considering Cunningham slip correction factor. Environmental Eng. Res.,

Atmospheric Rivers and Orographic Precipitation

Ryoo, J.-M., S. Chiao, J. R. Spackman, L. T. Iraci, R. B. Pierce, F. M. Ralph, J. E. Marrero, E. L. Yates, W. Gore, A. Martin, R. M. Dole, 2020: The Impact of a Coastal Barrier Jet on Precipitation in Northern California during Atmospheric Rivers: A Case Study using Measurements and Models, J. Hydrometeorology, in press.

Bridger, A, D. Nguyen, and S. Chiao, 2019: Developing Spatially Accurate Rainfall Predictions for the San Francisco Bay Area through Case Studies of Atmospheric River and other Synoptic Events. Atmosphere, 10, 541, doi:10.3390/atmos10090541

Liu*, C., S. Chiao, and J. Ryoo, 2019: Asian Long-Range Transport in Relation to Atmospheric Rivers in Northern California, Atmosphere, 10, 313, doi:10.3390/atmos10060313

Behringer*, D. and S. Chiao, 2019: Numerical Investigations of Atmospheric Rivers and the Rain Shadow over the Santa Clara Valley, Atmosphere, 10, 114;

Li, J., Y. Chen, H. Wang, J. Qin, J. Li, and S. Chiao, 2017: Extending flood forecasting lead time in a large watershed by coupling WRF QPF with a distributed hydrological model, Hydrol. Earth Syst. Sci., 21, 1279-1294, DOI:10.5194/hess-21-1279-2017

Eiserloh*, A. J, and S. Chiao, 2015: Modeling studies of landfalling atmospheric rivers and orographic precipitation over northern California, Meteor. and Atmos. Phy, 127, 1-16.  doi:10.1007/s00703-014-0350-4

Richard, E., A. Buzzi, G. Zangl, N. Asencio, R. Benoit, S. Chiao and co-others, 2005: Quantitative precipitation forecasting in mountains regions - Pushed ahead by MAP. Croatian Meteorological Journal, 40, 65 – 69.

Lin, Y.-L., S.-Y. Chen, and S. Chiao, 2005: Synoptic and mesoscale environments associated with MAP IOP-8 and the formation mechanisms of orographic rain. Mon. Wea. Rev., 133, 2227-2245.

Chiao, S., Y.-L. Lin, and M. L. Kaplan, 2004: Numerical study of the orographic forcing of heavy precipitation during MAP IOP-2B. Mon. Wea. Rev., 132, 2184-2203.

Chiao, S., 2003: The dynamics of orographic precipitation: A mesoscale modeling perspective. Ph.D. dissertation, North Carolina State University, 211 pp.   

Chiao, S. and Y.-L. Lin, 2003: Numerical modeling of an orographically induced precipitation event associated with tropical storm Rachel over Taiwan. Wea. and Forecasting, 18, 325-344.     Lin, Y.-L., D. B. Ensley, S. Chiao, and C.-Y. Huang, 2002: Orographic influence on rainfall and track deflection associated with the passage of a tropical cyclone. Mon. Wea. Rev., 130, 2929-2950.    

Lin, Y.-L., S. Chiao, T.-A. Wang, M. L. Kaplan, 2001: Some common ingredients for orographic flooding and heavy rainfall. Wea. and Forecasting. 15, 633-660.      

Lin, Y.-L., J. A. Thurman and S. Chiao, 2001: Influence of synoptic and mesoscale environments on heavy orographic rainfall associated with MAP IOP-2B and IOP-8. MAP newsletter, 15, 242-245.

Lin, Y.-L., S. Chiao, J. A. Thurman, M. L. Kaplan and T.-A. Wang, 2001: Essential ingredients for heavy orographic rainfall and their potential application for orographic rainfall prediction.
MAP newsletter, 15, 72-75.

Urban heat island and PBL

Mainhart*, M. R. Pasken, S. Chiao and M. Roark, 2020: Surface Mesovortices in relation to Urban Heat Island Effect in the Saint Louis Metropolitan Area, Urban Climate, in press.

Yasuhara* S., J. Forgeron*, C. Rella, P. Franz, G. Jacobson, and S. Chiao, 2013: Measurements of Carbon Dioxide, Methane, and Other Related Tracers at High Spatial and Temporal Resolution in an Urban Environment. Geophysical Research Abstracts. 15, EGU2013-13200-2.

Jury, M., and S. Chiao, 2013: Leeside boundary layer confluence and afternoon thunderstorms over Mayaguez, Puerto Rico. J. Appl. Meteor. Climatol., 52, 429-454.

Pattantyus*, A., and S. Chiao, 2010: Numerical studies of convective and stable boundary layer evolution in mountainous regions. Proceedings of the International Symposium for the Advancement of Boundary Layer Remote Sensing (ISARS), Paris, France, June 28-30, 2010.

Chiao, S., 2006: Performance of planetary boundary layer schemes in the WRF model. Proceedings of the 25th Army Science Conference, Orlando, FL November 2006, 8 p.

Big Data Applications

Gaganjot*, K., J. Gao, S. Chiao, S. Lu and G. Xie, 2018: Air Quality Prediction: Big data and Machine Learning Approaches, International Journal of Environmental Science and Development vol. 9, no. 1, pp. 8-16, 2018, DOI: 10.18178/ijesd.2018.9.1.1066

Zhang P., J. Gao, A. G. Thomas, K. P. Alagupackiam, K Mannava, P. Bosco, S. Chiao, 2017: On Building a Big Data Analysis System for California Drought, 2017 IEEE 3rd International Conference on Big Data Computing Service and Applications, San Francisco, CA, 2017, pp. 149-156. DOI: 10.1109/BigDataService.2017.23

Wildland Fires

Carpenter*, D. D. and S. Chiao, 2010: Modeling study of 2006 Central Florida wildfires using Fire Area Simulator. Florida Scientist, 73, 103-119.

Regional Climate

Jury, M. and S. Chiao, 2011: Meso-Climate of the Central Antilles. Earth Interactions, 15, 1-19. doi: 10.1175/2011EI391.1.

Barros, A. P., S. Chiao, T. Lang, J. Putkonen, and D. Burbank, 2006: From weather to climate-- Seasonal to interannual variability of storms in the Himalayas. Tectonics, Climate and Landscape Evolution, GSA special paper 398, 17-38. doi:10.1130/2006.2398(02).

Chiao, S. and A. P. Barros, 2007: A numerical study of the hydrometeorological drylines in Northwest India during the monsoon. J. of the Meteorological Society of Japan, 85, 337-361.

Mesoscale Nexuses

Lee, S., C. Jung, Y. Choi, S. Chiao, J. Um and W. Choi, 2019: Comparisons of simulations of updraft mass fluxes and their response to increasing aerosol concentration between a bin scheme and a bulk scheme in a deep-convective cloud system, Advances in Meteorology,.

Chiao, S., and R. Dumais, 2013: Investigations of a down-valley flow event during T-REX 2006, Meteorology and Atmospheric Physics, 122, 75-90. doi: 10.1007/s00703-013-0279-z.

Jury, M., and S. Chiao, 2014: Representation of Ethiopian wet spells in global and nested models, Advances in Meteorology, vol. 2014, Article ID 237374, doi:10.1155/2014/237374

Whitehall*, K., S. Chiao, M. Mayers-Als, 2013: Numerical Investigations of Convective Initiation in Barbados, Advances in Meteorology, vol. 2013, doi:10.1155/2013/630263.

Pattantyus*, A., S. Chiao, and S. Czyzyk, 2011: Improving high-resolution model forecasts of downslope winds in the Las Vegas Valley. J. Applied Meteorology and Clim., 50, 1324-1340.

Weldegaber*, M., B. Demoz, L. Sparling, and S. Chiao, 2011: Observational analysis of moisture evolution and variability in the boundary layer during the dryline on 22 May 2002 (IHOP 2002), Meteorology and Atmospheric Physics, 110, 87-102.

Pattantyus*, A., S. Chiao, and S. Czyzyk, 2010: Numerical model forecasting of downslope winds in the Las Vegas Valley. Proceedings of the 5th International Symposium on Computational Wind Engineering, Chapel Hill, NC, May 23-27, 2010.

Jury, M., S. Chiao, and E. W. Harmsen, 2009: Mesoscale structure of trade wind convection over Puerto Rico: Composite observations and numerical simulation. Boundary Layer Meteorology. 132, 289-313.


  • PI, “Ozonesonde Measurements in the Bay Area”, BAAQMD, 2016-2017, 30K.

  • PI, “Ozonesonde Measurements during CABOTS”, EPA, 2016, 75K.

  • PI, “MRI: Acquisition of Hybrid CPU/GPU High Performance Computing and Storage for STEM Research and Education at San Jose State University”, NSF, 2016-2019, 900K

  • PI, “Acquisition of Hybrid CPU/GPU High-Performance Computing and Storage for STEM Research and Education at San Jose State University”, DoD, 2016-2019, $498K (Award declined)

  • Co-PI, “Satellite-Derived PM2.5 Grids with Dispersion Model Downscaling: PM2.5 Data to Support Community-Scale Air Quality Health Research and Policy Development”, NASA, 2016-2019, 374K

  • PI, "Improved Understanding of the Magnitude of Trans-Pacific Long Range Transported Ozone Aloft at California's Coast", The California Air Resources Board, 2016-2019, $281K.

  • PI, "Center for Applied Atmospheric Research and Education (CAARE)", NASA/MIRO, 2015-2020, $4630K.

  • Co-I, "Weather Support for Unmanned Vehicle Systems Traffic Flow Management", NASA, 2-15-2016, 98K.

  • PI, "Improved Understanding of the Magnitude of Trans-Pacific Long Range Transported Ozone Aloft at California's Coast", RSCA/SJSU, 2015-2016, $5K.

  • PI, "Implementation of Urbanized Weather Research and Forecasting Model (uWRF) for Bay Area Air Quality Forecast", RSCA/SJSU, 2014-2015, $5K.

  • PI, "Acquisition of AWIPS II EDEX Server and CAVE Client in a Synoptic Weather and Analysis Classroom", UCAR/Unidata, 2014-2015, $11K.

San Jose State University Department of Meteorology, Duncan Hall 620
Phone: 408.924.5200 Email: