Faculty Profile

William L Chapman

William L Chapman
William L Chapman

Education

  • M.S., Atmospheric Sciences, University of Illinois at Urbana-Champaign, 1988
  • B.S., Math and Computer Science, University of Illinois at Urbana-Champaign, 1986

Academic Positions

  • Lecturer, Department of Computer Science, University of Illinois at Urbana-Champaign, 2014-present
  • Senior Research Programmer, Department of Atmospheric Sciences, University of Illinois at Urbana-Champaign, 1988-present

For more information

Other Professional Employment

  • Agrible, Inc. Champaign, IL, Co-Founder, 2014

Resident Instruction

  • CS 199: Debug-Your-Brain
  • CS 196: Freshman Honors Section
  • CS 125: Introduction to Computer Science

Course Development

  • 2015 - replaced midterm exam model in favor or weekly assessments
  • 2015 - instituted daily lecture feedback
  • 2015 - rewriting/updating course text

Student Organizations

  • Undergraduate research team of 8-10 students analyzing lecture feedback data
  • Work with Registered Student Organization - CocoaNuts iOS development community

Research Interests

  • Computer Science Education
  • Climate Variations
  • Arctic and Antarctic Weather and Climate

Chapters in Books

  • Walsh, J.E., and W.L. Chapman, 2014: Variability of sea ice over decadal and longer￿timescales. Climate Change: Multidecadal and Beyond (M. Ghil, M. Latif, J.M.￿Wallace and C.P. Chang, eds.), Vol. 6 of the World Scientific Series of Asia-Pacific Weather and Climate

Selected Articles in Journals

  • Vavrus, S., J. E. Walsh, W. L. Chapman, and D. H. Portis, 2003: Climate Model Simulations of Extreme Cold Air Outbreaks, Extended abstracts from the Midwest Extreme and Hazardous Weather Regional AMS Conference, Champaign, Illinois, 17-18 October, 2003, Central Illinois Chapter of the American Meteorological Society, Champaign, Il.
  • Portis, D. H., M. Celitti and W. L. Chapman, 2003: Diagnostic Study of the Evolution of Extreme Cold Air Outbreaks over the Midwest, Extended abstracts from the Midwest Extreme and Hazardous Weather Regional AMS Conference, Champaign, Illinois, 17-18 October, 2003, Central Illinois Chapter of the American Meteorological Society, Champaign, Il.
  • Vavrus, S., J. E. Walsh, W. L. Chapman and D. Portis, 2005: Simulations of wintertime arctic air surges into middle latitudes, Extended abstracts from the 8th Conference on Polar Meteorology and Oceanography, San Diego, Ca. from January 9-14, 2005. Available at ams.confex.com/ams/Annual2005/techprogram/paper_84945.htm
  • Chapman, W. L., 1989: Emperical diagnosis of interannual sea ice variations. Proceedings of the Sixteenth Stanstead Seminar, Bishop￿s University, Lennoxvill, Quebec, 46-50.
  • Chapman, W. L., and J. E. Walsh, 1989: A multifield analog approach to sea ice forecasting. Preprints, 11th Conference on Probability and Statistics in Atmospheric Sciences, Monterey, CA, American Meteorological Society, 297-300.
  • Walsh, J. E., and W. L. Chapman, 1990: Arctic contribution to upper-ocean variability in the North Atlantic. J. Climate, 3, 1462-1473.
  • Walsh, J. E., and W. L. Chapman, 1990: Short-term climatic variability of the Arctic. J. Climate, 3, 237-250.
  • Walsh, J. E., and W. L. Chapman, 1991: Model simulation of changes in arctic sea ice thickness. Proceedings, Fifth Conference on Climate Variations, Denver, CO, American Meteorological Society, 346-349.
  • Walsh, J. E., W. L. Chapman and H. J. Zwally, 1991: Arctic sea ice variability derived from satellite passive microwave data. Oceans from Space: Venice 1990, IAPSO Proceedings Volume.
  • Chapman, W. L., and J. E. Walsh, 1991: Long-range prediction of regional sea ice anomalies in the Arctic. Wea. Forecasting, 6, 271-288.
  • Walsh, J. E., and W. L. Chapman, 1992: Variability of Sea Ice in the Subpolar North Atlantic. Preprints: Third Conference on Polar Meteorology and Oceanography, Am. Meteor. Soc., Portland, OR, 87-90.
  • Walsh, J. E., and W. L. Chapman, 1992: Variability of Sea Ice in the Subpolar North Atlantic. The Atlantic Climate Change Program: Proceedings from the Principal Investigators' Meeting (Miami, FL), NOAA Climate and Global Change Program, Special Report No. 7, 23-26.
  • Chapman, W. L., and J. E. Walsh, 1993: Recent variations of sea ice and air temperatures in high latitudes. Bull. Amer. Meteor. Soc., 74, 33-47.
  • Walsh, J. E., A. Lynch, W. L. Chapman and D. Musgrave, 1993: A regional model for studies of atmosphere-ice-ocean interaction in the western Arctic. Meteorology and Atmospheric Physics, 51, 1￿
  • Chapman, W. L., W. Welch, K. P. Bowman, J. Sacks, and J. E. Walsh, 1994: Arctic Sea Ice Variability: Model Sensitivities and a Multidecadal Simulation. Jour. of Geophys. Res., 99, 919-935.
  • Searight, K.R., X. Tao, W.L. Chapman, J.E. Walsh, K.P. Bowman, and R.B. Wilhelmson, 1994, A GCM Comparison Study Using Envision. Preprints, Tenth International Conference on Interactive Information and Processing Systems for Meteorology, Oceanography, and Hydrology, Am. Meteor. Soc., Nashville, TN, 372-377. --> hypermedia presentation given at the 1994 IIPS meeting.
  • Lynch, A. L., W. L. Chapman, J. E. Walsh, 1995: Development of a Regional Climate Model of the Western Arctic. Journal of Climate, 8, 1555-1570.
  • Lynch, A. L., M. F. Glueck, W. L. Chapman, D. Bailey, and J. E. Walsh, 1995: The Use of Remote Sensing Data (SAR, AVHRR, SSM/I) for Verification of a Coupled Atmosphere-Sea Ice Regional Model. Mon. Wea. Rev., Vol. 16, 2, 456-469.
  • Lynch, A. H., M. F. Glueck, W. L. Chapman, D. A. Bailey, J. E. Walsh, 1995: The Use of Synthetic Aperture Radar Data for Verification of a Coupled Atmosphere-Sea Ice Regional Climate Model. Preprints, Fourth Conference on Polar Meteorology and Oceanography, Am. Meteor. Soc., Dallas, TX, 180-185.
  • Lynch, A. H., W. L. Chapman, J. E. Walsh, G. Weller, 1995: Development of a Regional Climate Model of the Western Arctic. Preprints, Fourth Conference on Polar Meteorology and Oceanography, Am. Meteor. Soc., Dallas, TX, 144-149.
  • Tao, X., W. L. Chapman, J. E. Walsh, 1995: Intercomparison of Global Climate Model Simulations of Arctic Temperature. Preprints, Fourth Conference on Polar Meteorology and Oceanography, Am. Meteor. Soc., Dallas, TX, 138-143.
  • Chapman, D. A., D. E. Novak, W. L. Chapman, 1995: A Collaborative Interdisciplinary Unit on Weather for Elementary Educators on the Internet. Preprints, Joint Conference on Education and Interactive Information Processing, Am. Meteor. Soc., Dallas, TX, 79-82.
  • Tao, X., J. E. Walsh, W. L. Chapman, 1996: An Assessment of Global Climate Model Simulations of Arctic Air Temperatures. Journal of Climate, 9, 1060-1076.
  • Walsh, J. E., W. L. Chapman, T. L. Shy, 1996: Recent Decrease of Sea Level Pressure in the Central Arctic. Journal of Climate, Vol. 9, 2, 480-486.
  • Lynch, A. H., M. F. Gluek, W. L. Chapman, D. A. Bailey, J. E. Walsh, 1997: Satellite observations and climate system model simulation of the St. Lawrence Island polynya. Tellus, Vol. 49A, 277-297.
  • Walsh J. E., W. L. Chapman, 1997: Observationally- and Reanalysis-Derived Associations between Arctic Clouds, Surface Radiative Fluxes and Air Temperature. Proceedings, WMO/ICSU/IOC World Climate Research Programme(WCRP), Conference on Polar Processes and Global Climate.
  • Tilley J. S., W. L. Chapman, W. Wu, 1997: Sensitivity tests of the Canadian Land Surface Scheme (CLASS) for Arctic Tundra. Ann. of Glaciol., Vol. 25, 46-50.
  • Lynch, A. H., D. McGinnis, W. L. Chapman, J. S. Tilley, 1997: A multivariate comparison of two land-surface models integrated into an Arctic Regional Climate System model. Ann. of Glaciol., Vol. 25, 127-131.
  • Walsh J. E., and W. L. Chapman, 1998: Arctic cloud-radiation-temperature associations in observational data and atmospheric reanalyses. Journal of Climate., 11, 3030-3045.
  • Walsh J. E., D. H. Portis, W. L. Chapman, 1998: An Assessment of Reanalysis-Derived Surface Fluxes in the Arctic. Proc. Of the First International Conference on Reanalyses, Siver Spring, MD, 27-31 October 1997, WCRP-104, WMO/TD-NO. 876, 363-366.
  • Walsh J. E., K. Y. Vinnikov and W. L. Chapman, 1999: On the use of historical sea ice charts in assessments of century-scale climate variations. Proceedings, Workshop on Operational Sea Ice Charts of the Arctic, Arctic Climate System Study, World Climate Research Programme, WCRP.
  • Shy T. L., J. E. Walsh, W. L. Chapman, A. H. Lynch, D. A. Bailey, 2000: Sea ice model validation using submarine measurements of ice draft. Ann. Glaciology, 31, 307-312.
  • Walsh J. E., A. S. Phillips, D. H. Portis, W. L. Chapman, 2001: Extreme cold outbreaks in the United States and Europe, 1948-1999. J. Climate, 14, 2642-2658.
  • Walsh J. E. and W. L. Chapman, 2001: Twentieth-century sea ice variations from observational data. Ann. Glaciology, 33, 444-448.
  • Walsh J. E., V. M. Kattsov, W. L. Chapman, V. Govorkova and T. Pavlova, 2002: Comparison of Arctic climate simulations in uncoupled and coupled global climate models. J. Climate, 15, 1429-1146.
  • Pielke, R. A., G. E. Liston, W. L. Chapman and D. A. Robinson, 2004: Actual and insolation-weighted Northern Hemisphere snow cover and sea-ice between 1973￿2002, Climate Dynamics, 22, v. 6-7, 591-595.
  • Walsh, J. E., S. J. Vavrus and W. L. Chapman, 2005: Workshop on Modeling of the Arctic Atmosphere. Bull. Amer. Meteor. Soc., 86, No. 6, 845￿852.
  • Chapin, F. S. III, M. Sturm, M. C. Serreze, J. P. McFadden, J. R. Key, A. H. Lloyd, A. D. McGuire, T. S. Rupp, A. H. Lynch, J. P. Schimel, J. Beringer, H. E. Epstein, L. D. Hinzman, G. Jia, C. -L. Ping, K. Tape, W. L. Chapman, E. Euskirchen, C. D. C. Thompson, J. M. Welker, and D. A. Walker, 2005: Amplification of Arctic Summer Warming by Terrestrial Ecosystem Changes, Science, [DOI: 10.1126/science.1117368].
  • J. Oerlemans, R. P. Bassford, W. L. Chapman, J. A. Dowdeswell, A. F. Glazovsky, J.-O. Hagen, K. Melvold, M. de Ruyter de Wildt and R. S. W. van de Wal, 2005: Estimating the contribution from Arctic glaciers to sea-level change in the next hundred years. Annals of Glaciology, 42, 230-236(7).
  • Portis, D., M. Cellitti, W. L. Chapman and J. E. Walsh, 2005: Low-frequency variability and evolution of North American Cold Air Outbreaks. Mon. Weather Rev., 134, 579-597.
  • Vavrus, S., J. Walsh, W. Chapman, D. Portis, 2006: The behavior of extreme cold air outbreaks under greenhouse warming, Intl. J. of Climatology, 26, 9, 1133-1147.
  • Kattsov, Vladimir M., John E. Walsh, William L. Chapman, Veronika A. Govorkova, Tatyana V. Pavlova, Xiangdong Zhang, 2007: Simulation and Projection of Arctic Freshwater Budget Components by the IPCC AR4 Global Climate Models. J. Hydrometeor, 8, 571￿589. doi: http://dx.doi.org/10.1175/JHM575.
  • Chapman, W. L., and J. E. Walsh, 2007: Simulations of Arctic temperature and pressure by Global Coupled Models, J. Climate, 20, 609-632.
  • Chapman, William L., John E. Walsh, 2007: A Synthesis of Antarctic Temperatures. J. Climate, 20, 4096￿4117. doi: http://dx.doi.org/10.1175/JCLI4236.1
  • Walsh, John E., William L. Chapman, Vladimir Romanovsky, Jens H. Christensen, Martin Stendel, 2008: Global Climate Model Performance over Alaska and Greenland. J. Climate, 21, 6156￿6174. doi: http://dx.doi.org/10.1175/2008JCLI2163.1
  • Walsh, John E., William L. Chapman, Diane H. Portis, 2009: Arctic Cloud Fraction and Radiative Fluxes in Atmospheric Reanalyses. J. Climate, 22, 2316￿2334. doi: http://dx.doi.org/10.1175/2008JCLI2213.1
  • Hu, F. S., P. E. Higuera, J. E. Walsh, W. L. Chapman, P. A. Duffy, L. B. Brubaker, and M. L. Chipman 2010, Tundra burning in Alaska: Linkages to climatic change and sea ice retreat, J. Geophys. Res., 115, G04002, doi:10.1029/2009JG001270.
  • Yu, G., Z. Schwartz, J. E. Walsh, and W. L. Chapman, 2009: A weather-resolving index for assessing the impact of climate change on tourism related climate resources. Climatic Change, 95, 551-573, doi:10.1007/s10584-009-9565-7.
  • Strey, S. T., W. L. Chapman, and J. E. Walsh, 2010: The 2007 sea ice minimum: Impacts on the Northern Hemisphere atmosphere in late autumn and early winter, J. Geophys. Res., 115, D23103, doi:10.1029/2009JD013294.
  • Overland, J. E., M. Wang, V. M. Kattsov, J. H. Christensen, W. L. Chapman and J. E. Walsh, 2011: Climate model projections for the Arctic. Book, Accepted Bibliography: Scientific Report: Snow, Water, Ice and Permafrost in the Arctic.
  • Gleicher, KJ; Walsh, JE; Chapman, WL, 2011: A vorticity-based analysis of the spatial and temporal characteristics of the Beaufort Anticyclone, J. Geophys Res. - Atmos., p. , 116. 10.1029/2011JD01570
  • de Boer, G; Chapman, W; Kay, JE; Medeiros, B; Shupe, MD; Vavrus, S; Walsh, J, 2012: A Characterization of the Present-Day Arctic Atmosphere in CCSM4. J. Climate, 25, 2676￿2695. doi: http://dx.doi.org/10.1175/JCLI-D-11-00228.1.
  • John E. Walsh, Hotaek Park, William L. Chapman, Tetsuo Ohata. (2013) Relationships between variations of the land￿ocean￿atmosphere system of northeastern Asia and northwestern North America. Polar Science 7:2, 188-203.

Articles in Conference Proceedings

  • Timlin, M. S., and W. L. Chapman, 2002: Simulation of sea ice and snow cover in coupled global models. Simulating the Arctic in Large-Scale Climate Models, Community Arctic Modeling Project Workshop, Madison, Wisconsin, May 2002.
  • Wilson, M. J., G. Y. Zhou, W. L. Chapman, L DiGiralamo, 2004: Current status of cloud mask products from the Multi-angle Imaging SpectroRadiomter. EOS Trans. AGU, 85(17), Joint Assembly Suppl., Abstract.
  • Midwest Extreme and Hazardous Weather Regional AMS Conference in Champaign, Illinois from 17-18 October, 2003. Oral presentation, given by Steve Vavrus entitled, Climate Model Simulations of Extreme Cold-Air Outbreaks by S. Vavrus, J. E. Walsh, W. L. Chapman and D. H. Portis.
  • Midwest Extreme and Hazardous Weather Regional AMS Conference in Champaign, Illinois from 17-18 October, 2003. Oral presentation, given by Diane Portis entitled, Diagnostic Study of the Evolution of Extreme Cold Air Outbreaks over the Midwest by D. H. Portis, M. Cellitti and W. L. Chapman.
  • 29th Annual Climate Diagnostics and Prediction Workshop, Madison, Wisconsin from 18-21 October, 2004. Oral presentation by Steve Vavrus entitled, Climate Model Simulations of Extreme Cold Air Outbreaks by S. Vavrus, J. Walsh, W. Chapman and D. Portis.
  • 8th Conference on Polar Meteorology and Oceanography, San Diego, Ca. from January 9-14, 2005. Oral presentation by Steve Vavrus entitled, Simulation of Wintertime Arctic Air Surges into Middle Latitudes by S. Vavrus, J. Walsh, D. Portis and W. Chapman.
  • Workshop on the Analysis of Climate Model Simulations for the IPCC AR4, Honolulu, Hawaii from 1-4 March 2005. Poster: Climate Model Simulations of Extreme Cold Air Outbreaks, by S. Vavrus, J. Walsh, W. Chapman and D. Portis.
  • ARM Workshop, 2007. Poster: ARM/NSA validation of Arctic clouds and radiative impacts in reanalyses. Walsh J. E., and W. L. Chapman.
  • 3rd WGNE Workshop on Systematic Errors in Climate and NWP Models. Feb. 2007. Poster: Climate Model Performance in the Arctic, Chapman W. L., J. E. Walsh, and D. H. Portis

Pending Articles

  • Walsh, J. E., W. L. Chapman, and F. Fetterer. 2015. A database for depicting Arctic sea ice variations back to 1850. Geographical Review, Special Issue: Arctic 2017, submitted.

Other Publications

Honors

  • Chancellor￿s Academic Professional Excellence Award (2006)
  • College of Liberal Arts and Sciences Staff Award (2005)

Research Honors

  • Teacher Ranked as Outstanding by Their Students (Fall 2015)
  • Teacher Ranked as Outstanding by Their Students (Spring 2015)
  • Teacher Ranked as Outstanding by Their Students (Fall 2014)
  • Teacher Ranked as Outstanding by Their Students (Spring 2014)
  • Teacher Ranked as Outstanding by Their Students (Fall 2013)
  • Teacher Ranked as Outstanding by Their Students (Spring 2013)