John Horel

John Horel


Office: 483 INSCC
Phone: (801) 581-8727
Fax: (801) 585-3681
Citations: Google scholar

University of Utah
Department of Atmospheric Sciences
135 S 1460 E, Rm 819
Salt Lake City, Utah 84112-0110

John Horel


Ph.D. 1982, Atmospheric Sciences, University of Washington
B.S. 1977, Meteorology, San Jose State University

Research Interests

My research is centered on the observation and analysis of weather and climate processes in mountainous regions. My current research activities include further development of MesoWest and ROMAN (see, which provide access to surface weather observations for operational, research, and educational applications. MesoWest also provides a foundation from which to conduct research to improve data assimilation techniques over complex terrain and evaluate the cost effectiveness of surface observing networks. I also am involved in research related to the Great Salt Lake, Utah regional climate issues, and cold-air pools associated with poor air quality.


Fellow of the American Meteorological Society 2002
Outstanding Service Award, National Weather Service Western Region, "For outstanding service to the weather support group for the 2002 Olympic Winter Games" 2002
College of Mines and Earth Sciences Outstanding Teacher Award 1993-94

John Horel

Courses Taught in Past 3 Years

Atmos 1010: Severe and Unusual Weather
Atmos 3000: Professional Development in the Atmospheric Sciences
Atmos 5040, 6040: Environmental Statistics
Atmos 5050, 6050: Environmental Instrumentation

Text and Book Chapters

Steenburgh, W. J., K. Redmond, K. E. Kunkel, N. Doesken, R. Gillies, J. Horel, M. P. Hoerling, and T. H. Painter, 2012: The weather and climate of the Southwest United States. Assessment of Climate Change in the Southwest United States: A Technical Report Prepared for the U. S. National Climate Assessment. In press.

Horel, J., 2003: Terrain-forced mesoscale circulations. Handbook of Weather, Climate, and Water: Dynamics, Climate, Physical Meteorology, Weather Systems, and Measurements. Edited by T. Potter and B. Colman. Wiley and Sons. 562-573.

Horel, J. D., and J. E. Geisler, 1996: Global Environmental Change: An Atmospheric Perspective. 165 pp. John Wiley and Son.

Peer-Reviewed Publications

Lawson, J., and J. Horel 2015: Predictability of the 1 December 2011 Wasatch. Submitted to Wea. Forecasting.

Jacques, A., J. Horel, E. Crosman, F. Vernon, 2015: Central and Eastern United States surface pressure variations derived from the USArray network. Mon. Wea. Rev. 143, 1472-1493. doi:

Lareau, N., and J. Horel, 2015: Turbulent erosion of cold-air pools. J. Atmos. Sci. 1409-1427. doi:

Lawson, J., and J. Horel 2015: Analysis of the 1 December 2011 Wasatch downslope windstorm. Wea. Forecasting, 30, 115-135. doi:

Lareau, N., and J. Horel, 2015: Dynamically induced displacements of a persistent cold-air pool. Boundary-Layer Meteorology, 154, 2, 291-316.

Neemann, E., E. Crosman, J. Horel, L. Avey, 2015: Simulations of a cold-air pool associated with elevated wintertime ozone in the Uintah Basin, Utah. Atmos. Chem. Phys., 15, 135-151, 2015. doi:10.5194/acp-15-135-2015 154, 2, 291-316.

Lammers, M., and J. Horel, 2014: Verification of National Weather Service spot forecasts using surface observations. J. Operational Meteor, 2, 246–264.

Whiteman, C. D., S. W. Hoch, J. D. Horel, and A. Charland, 2014: Relationship between particulate air pollution and meteorological variables in Utah's Salt Lake Valley. Atmospheric Environment, 94,742-753.

Ralph, F. M., and J. Horel (author 19 of 25 co-authors), 2014: A vision for future observations for western U.S. extreme precipitation and flooding. Jour. of Contemporary Water Research & Education, 153, 16-32.

Horel, J., R. Ziel, C. Galli, J. Pechmann, X. Dong, 2014: An evaluation of fire danger and behavior indices in the Great Lakes region calculated from station and gridded weather information. International Journal of Wildland Fire. 23, 202.214.

Horel, J., D. Ziegenfuss, K. Perry, 2013: Transforming an atmospheric science curriculum to meet students. needs. Bull. Amer. Meteor. Soc., 94, 475-484. Tyndall, D., and J. Horel, 2013: Impacts of mesonet observations on meteorological surface analyses. Wea. Forecasting. 28, 254-269.

Lareau, N., E. Crosman, C. Whiteman, J. Horel, S. Hoch, W. Brown, T. Horst, 2013: The Persistent Cold-Air Pool Study. Bull Amer. Meteor. Soc. 94, 51.63.

Crosman, E. and J. Horel, 2012: Idealized Large-Eddy Simulations of Sea and Lake Breezes: Sensitivity to Lake Diameter, Heat Flux and Stability. Boundary Layer Meteorology. 144, 309-328.

Lareau, N. and J. Horel, 2012: The Climatology of Synoptic- Scale Ascent Over Western North America: A Perspective on Storm Tracks. Mon. Wea. Rev, 140, 1761-1778.

de Pondeca, M., G. Manikin, G. DiMego, S. Benjamin, D. Parrish, R. Purser, W. Wu, J. Horel, D. Myrick, Y. Lin, R. Aune, D. Keyser, B. Colman, G. Mann, J. Vavra, 2011: The Real-Time Mesoscale Analysis at NOAA's National Centers for Environmental Prediction: Current status and development. Wea. Forecasting, 26, 593-612.

Wagner, W., and J. Horel, 2011: Observations and simulations of snow surface temperature on cross-country ski racing courses. Cold Regions Science and Technology, 66-1, 1-11.

Crosman, E., and J. Horel, 2010: Numerical sensitivity studies of sea and lake breezes: a review. Boundary Layer Meteorology. 137, 1-29.

Horel, John D., and X. Dong 2010: An evaluation of the distribution of Remote Automated Weather Stations (RAWS). Journal of Appl. Meteor. and Clim., 49, 1563-1578.

Tyndall, D., J. Horel, and M. dePondeca, 2010: Sensitivity of surface air temperature analyses to background and observation errors. Wea. Forecasting, 25, 852-865

Crosman, E., and J. Horel, 2008: MODIS-derived surface temperature of the Great Salt Lake, Remote Sensing of Environment., 113, 73-81.

Myrick, D., and J. Horel, 2008: Sensitivity of surface analyses over the western United States to RAWS observations. Wea. Forecasting, 23, 145-158.

Zumpfe, D., J. Horel, 2007: Lake-breeze fronts in the Salt Lake Valley. J. Appl. Meteor., 46, 196-211.

Myrick, D., J. Horel, 2006: Verification over the Western United States of surface temperature forecasts from the National Digital Forecast Database. Wea. Forecasting, 21, 869-892.

Horel, J., B. Colman, 2005: Meeting Summary: A community meeting on real-time and retrospective mesoscale objective analysis: An Analysis of Record summit. Bull. Amer. Meteor. Soc., 86, 1477.1480.

Myrick, D., J. Horel, S. Lazarus, 2005: Local adjustment of the background error correlation for surface analyses over complex terrain. Wea. Forecasting, 20, 149-160.

Ludwig, F., J. Horel, C. D. Whiteman, 2004: Using EOF analysis to identify important surface wind patterns in mountain valleys. J. Appl. Meteor., 7, 969-983.

Clements, C. B., C. D. Whiteman, J. D. Horel, 2003: Cold air pool structure and evolution in a mountain basin. J. Appl. Meteor. 42, 752-768.

Doran, C., J. Fast, J. Horel, 2002: The VTMX 2000 Campaign. Bull. Amer. Meteor. Soc., 83, 537-551.

Lazarus, S., C. Ciliberti, J. Horel, K. Brewster, 2002: Near-real-time applications of a mesoscale analysis system to complex terrain. Wea. Forecasting, 17, 971-1000.

Horel, J., T. Potter, L. Dunn, W. J. Steenburgh, M. Eubank, M. Splitt, and D. J. Onton, 2002: Weather support for the 2002 Winter Olympic and Paralympic Games. Bull. Amer. Meteor. Soc., 83, 227-240

Horel, J., M. Splitt, L. Dunn, J. Pechmann, B. White, C. Ciliberti, S. Lazarus, J. Slemmer, D. Zaff, J. Burks, 2002: MesoWest: Cooperative Mesonets in the Western United States. Bull. Amer. Meteor. Soc., 83, 211-226.

Schultz, D. M., W. J. Steenburgh, R. J. Trapp, J. Horel, D. E. Kingsmill, L. B. Dunn, W. D. Rust, L. Cheng, A. Bansemer, J. Cox, J. Daugherty, D. P. Jorgensen, J. Meitin, L. Showell, B. F. Smull, K. Tarp, and M. Trainor, 2002: Understanding Utah winter storms: The Intermountain Precipitation Experiment. Bull. Amer. Meteor. Soc., 83, 189-210.

White, Bryan G., Paegle, Jan, Steenburgh, W. James, Horel, John D., Swanson, Robert T., Cook, Louis K., Onton, Daryl J., Miles,John G. 1999: Short-Term Forecast Validation of Six Models. Wea. Forecasting. 14, 84-108.

Waldron, Kim M., Paegle, Jan, Horel, John D. 1996: Sensitivity of a Spectrally Filtered and Nudged Limited-Area Model to Outer Model Options. Mon. Wea. Rev., 124, 529-552.

Dunn, Lawrence B., Horel, John D. 1994: Prediction of Central Arizona Convection. Part II: Further Examination of the Eta Model Forecasts. Wea. Forecasting, 9, 508-521.

Dunn, Lawrence B., Horel, John D. 1994: Prediction of Central Arizona Convection. Part I: Evaluation of the NGM and Eta Model Precipitation Forecasts.Wea. Forecasting, 9, 495-507.

Horel, John D., Gibson, Chris V. 1994: Analysis and Simulation of a Winter Storm over Utah. Wea.Forecasting. 9, 479- 494.

Horel, John D., Pechmann, Judith B., Geisler, John E., Hahmann, Andrea N. 1994: Simulations of the Amazon Basin Circulation with a Regional Model. J. Climate. 7, 56- 71.

Berbery, Ernesto H., Nogues-Paegle, Julia, Horel, John D. 1992: Wavelike Southern Hemisphere Extratropical Teleconnections. J. Atmos. Sci., 49, 155-177.

Sassen, Kenneth, Horel, John D. 1990: Polarization Lidar and Synoptic Analyses of an Unusual Volcanic Aerosol Cloud. J. Atmos. Sci. 47, 2881-2889.

Jones, C., J. D. Horel, 1990: A note on the upper level divergence field over South America during the summer season. Revista Brasileira de Meteorologia, Vol. 5(2), 411-415.

Barker, Timothy W., Horel, John D. 1989: The Impact of Climatology and Systematic Errors upon the Skill of DERF Forecasts. Mon. Wea. Rev., 117, 2835-2842.

Horel, John D., Hahmann, Andrea N., Geisler, John E. 1989: An investigation of the Annual Cycle of Convective Activity over the Tropical Americas. J. Climate, 2, 1388-1403.

Horel, John D., Staley, Lloyd R., Barker, Timothy W. 1988: The University of Utah Interactive Dynamics Program- One Approach to Interactive Access and Storage of Meteorological Data. Bull. Amer. Meteor. Soc., 69, 1321-1327.

Horel, John D., Mechoso, Carlos R. 1988: Observed and Simulated Intraseasonal Variability of the Wintertime Planetary Circulation. J. Climate, 1, 582-599.

Barker, Timothy W., Horel, John D. 1988: Quasi-Stationary Regimes in the Northern Hemisphere of the NCAR Community Climate Model. J. Climate, 1, 406- 417.

Horel, John D., Cornejo-Garrido, Angel G. 1986: Convection along the Coast of Northern Peru during 1983: Spatial and Temporal Variation of Clouds and Rainfall. Mon. Wea. Rev., 114, 2091-2105.

Horel, John D. 1985: Persistence of Wintertime 500 mb Height Anomalies over the Central Pacific. Mon. Wea. Rev., 113, 2043-2048.

Horel, John D. 1985: Persistence of the 500 mb Height Field during Northern Hemisphere Winter. Mon. Wea. Rev., 113, 2030-2042.

Horel, J. D. 1984: Complex Principal Component Analysis: Theory and Examples. J. Appl. Meteor., 23, 1660-1673.

Van Den Dool, H.M., Horel, J.D. 1984: An Attempt to Estimate the Thermal Resistance of the Upper Ocean to Climatic Change. J. Atmos. Sci., 41, 1601-1612.

Horel, John D. 1982: On the Annual Cycle of the Tropical Pacific Atmosphere and Ocean. Mon. Wea. Rev., 110, 1863-1878.

Horel, John D., Wallace, John M. 1982: Reply. Mon. Wea. Rev., 10, 1497-1497.

Horel, John D. 1981: A Rotated Principal Component Analysis of the Interannual Variability of the Northern Hemisphere 500 mb Height Field. Mon. Wea. Rev., 109, 2080-2092.

Horel, John D., Wallace, John M. 1981: Planetary-Scale Atmospheric Phenomena Associated with the Southern Oscillation. Mon. Wea. Rev., 109, 813-829.