DRI / DIRECTORY / JOHN MEJIA
John Mejia Profile Photo
Dr. John Mejia
Associate Research Professor, Climatology

Research Areas

  • Atmospheric modeling and applications
  • Climate dynamics and hydroclimate
  • Big data analytics and uncertainty assessments

Professional Interests

Dr. Mejia’s research makes strong emphasis on areas associated with observing, understanding, modeling, and predicting weather and climate at different spatial and temporal scales. He works on developing methods for representing uncertainty in regional models, and tailoring simulated output for impact applications. Dr. Mejia’s focus involves the development of a regional climate modeling framework for the Western U.S. using Weather Research Forecasting Model (WRF) and the NCAR’s Community Earth System Model to study the impacts of the global and regional aspects of climate change over the complex terrain, and source identification related to systematic errors in climate models. He has extensive experience in development and operation of multi-dimensional and ensemble forecasting models, observational and model data processing, data assimilation, and in the research areas of improvement in atmospheric modeling. Experience operating atmospheric models of different generations to investigate atmospheric dynamics and moist processes; real-time weather forecasting; atmospheric flows over complex terrain and air quality and dispersion modeling; and evaluation methods applied to atmospheric models using aircraft and satellite data.

Dr. Mejia is a professor for the Atmospheric Science Graduate program, University of Nevada, Reno, NV. The coursers taught include Climate Modeling, Atmospheric Modeling, Applied Data Analysis, Atmospheric Turbulence, Mesoscale Modeling. Reviewer member of multiple indexed journals and funding programs and his is involved as an advisory Committee member for broadening STEM and underrepresented minorities in the NSF EPSCoR program in Nevada.

Education and Experience

PhD2008University of OklahomaMeteorology/Regional Climate Modeling
MSc2002National Univ. of ColombiaWater Resources Management/Hydroclimate
BSc1999National Univ. of ColombiaCivil Engineering/Hydrology

Professional Experience

YearExperience
2017 PresentAssociateResearch Professor, Desert Research Institute, Division of Atmospheric Science, Reno, NV.
2011 2017Assistant Research Professor, Desert Research Institute, Division of Atmospheric Science, Reno, NV.
2009 2011Postdoctoral Fellow, Desert Research Institute, Division of Atmospheric Sciences, Reno, NV
2008 2009Postdoctoral Research Associate, Cooperative Institute for Mesoscale Meteorological Studies/NOAA/National Severe Storms Laboratory. Norman, OK.
2002- 2008Research Assistant, Cooperative Institute for Mesoscale Meteorological Studies/University of Oklahoma. Data assimilation applications and numerical simulations using Weather Research and Forecasting (WRF) model. Development and implementation of 4-dimensional data assimilation of special field experiment observations.
2000 2002Research Associate Engineer, Hydrological Atlas of Colombia/Land-Atmosphere Models, Unit of Energy-Mining Management/National University of Colombia.
1998 2002Research Associate Engineer: ENSO forecasts into reservoir operation and hydroelectric power distribution procedures. Interamerican Institute to the Research of the Climatic Change/National University of Colombia.

Professional Associations

  • Full Member of the American Meteorological Society (AMS)
  • Full Member of the American Geophysical Union (AGU)

Fellowships, Honors, and Awards

  • 2014 Peter B. Wagner Medal of Excellence for DRI Scholars in the Early Stages of Career Development: In recognition of applications of atmospheric models to inform policy development and implementation.
  • 2013 Outstanding Reviewer: American Society of Civil Engineers (ASCE) Journal of Water Resources Planning and Management.
  • Rising Start Award, Nevada, 22nd National NSF ESPCoR conference, Coeur dAlene, Idaho, Oct-2011.
  • NASA Group Achievement Award. Outstanding accomplishment through the coordination of the NASA African M Monsoon Multidisciplinary Analyses (NAMMA), 2008.
  • Member of the winner group in the first place: National Award in Environmental Sciences. Foundation Alejandro Angel Escobar. Hydrologic Atlas of Colombia. September 2007.
  • Awarded to the 2006-2009 Latino Achievement and Heritage Celebration Graduation/Award, University of Oklahoma. Recipient recognition for academic excellence.
  • Member of the winner group in the first place: National Award in Environmental Sciences. Foundation Alejandro Angel Escobar. Water Budget in Colombia. September 2000.
  • Fellowship recipient: Excellent students. National University of Colombia, Graduate program in Water Resources Management. Jan/2000-Feb/2002.
  • Scholarship recipient: Grant to develop MSc Thesis supported by the Research Bureau of the National University of Colombia (DINAIN).
  • Member of the winner group in the second place: Technology and Science award, Water Budget in Colombia. Secretara de Educacin y Cultura de Medelln y el Planetario de Medelln, November, 1999.

Keywords

climate modeling, weather forecasting, north american monsoon, interannual and intraseasonal variability, atmospheric dynamics, dynamical downscaling, hydroclimate, hydrometeorology, urban canopy modeling, air dispersion modeling, energy and water.

 

Publications
2019
Dorman, C., Mejia, J. F., Koracin, D. R., McEvoy, D. J. (2019). World Marine Fog Based on 58 years of Ship Observations, International Journal of Climatology, https://doi.org/10.1002/joc.6200
Mejia, J. F., Gillies, J. A., Etyemezian, V. R., Glick, R. (2019). A very-high resolution (20 m) measurement-based dust emissions and dispersion modeling approach for the Oceano Dunes, California, Atmospheric Environment, 218, https://doi.org/10.1016/j.atmosenv.2019.116977
Bandala, E. R., Kebede, K., Jonsson, N., Murray, R., Green, D., Mejia, J. F., Martinez-Austria, P. F. (2019). Extreme heat and mortality rates in Las Vegas, Nevada: Inter-annual variations and thresholds, International Journal of Environmental Science and Technology, 16, 7175-7186, 10.1007/s13762-019-02357-9
Montrone, A., Saito, L., Weisberg, P. J., Gosejohan, M., Merriam, K., Mejia, J. F. (2019). Climate change impacts on vernal pool hydrology and vegetation in northern California, Journal of Hydrology, 574, 1003-1013, 10.1016/j.jhydrol.2019.04.076
Yepes, L., Poveda, G., Mejia, J. F., Moreno, L., Rueda, C. (2019). CHOCO-JEX: A Research Experiment Focused on the CHOCO Low-level Jet over the Far Eastern Pacific and Western Colombia, Bull. Amer. Meteor. Soc., 100 (5), 779-796, 10.1175/BAMS-D-18-0045.1
Henao, J. J., Mejia, J. F., Rendó, A. M., Salazar, J. F. (2019). Sub-kilometer dispersion simulation of a CO tracer in complex terrain, Atmospheric Pollution, Accepted.
McDonough, F., Mejia, J. F. (2019). Model Simulations for 6 Storms that Produced Seedable Snow over the San Juan Mountains: Final Report, October 1, 2019, Prepared for the Dolores Water Conservancy District.
2018
Mejia, J. F., Giordano, M., Wilcox, E.M. (2018). Conditional Summertime Day-Ahead Solar Irradiance Forecast, Solar Energy, 163, 610-622, 10.1016/j.solener.2018.01.094
Mejia, J. F., Koracin, D. R., Wilcox, E.M. (2018). Effect of Coupled GCM SST Biases on Simulated Climate of the Western U.S., Intl. J. Climatol., 1-19, 10.1002/joc.5817
Montrone, A., Saito, L., Weisberg, P. J., Gosejohan, M., Iubelt, M., Merriam, K., Mejia, J. F. (2018). Climate Change Impacts on Vernal Pool Hydrology and Vegetation in Northern California, Journal of Hydrology, Accepted.
Yepes, J., Poveda, G., Mejia, J. F., Moreno, L., Rueda, C. (2018). CHOCOJEX: A Research Experiment Focused on the CHOCO Low-level Jet over the Far Eastern Pacific and Western Colombia, Bulletin of the American Meteorological Society, Accepted.
Nauslar, N. J., Hatchett, B. J., Brown, T. J., Kaplan, M. L., Mejia, J. F. (2018). Impact of the North American Monsoon on wildfire activity in the southwest United States, International Journal of Climatology, 10.1002/joc.5899
Campozano, L., Trachte, K., Célleri, R., Samaniego, E., Bendix, J., Albuja, C., Mejia, J. F. (2018). Climatology and Teleconnections of Mesoscale Convective Systems in an Andean Basin in Southern Ecuador: The Case of the Paute Basin, Advances in Meteorology, Article ID: 4259191, 10.1155/2018/4259191
Mejia, J. F., Koracin, D. R., Wilcox, E.M. (2018). Effect of coupled global climate models sea surface temperature biases on simulated climate of the western United States, International Journal of Climatology, 38 (14), 5386-5404, 10.1002/joc.5817
Posada-Marín, J. A., Rendón, A. M., Mejia, J. F., Salazar, J. F., Villegas, J. C. (2018). WRF downscaling improves ERA-Interim representation of precipitation representation during El Niño over tropical Andean valleys during El Niño: Implications for climate change projections, Climate Dynamics, 10.1007/s00382-018-4403-0
McDonough, F., Mejia, J. F. (2018). Model Simulations for 6 Storms that Produced Seedable Snow over the San Juan Mountains, July 31, 2018, Prepared for the Dolores Water Conservation District.
2017
Dorman, C. E., Koracin, D. R. (Eds.) Dorman, C., Mejia, J. F., Koracin, D. R., McEvoy, D. J. (2017). Worldwide Marine Fog Occurrence and Climatology (Book Chapter 3), In Marine Fog: Challenges and Advancements in Observations and Forecasting, Series: Springer Atmospheric Sciences, pp. 7-152, Springer International Publishing: Basel, Switzerland
Jaramillo, L., Poveda, G., Mejia, J. F. (2017). Mesoscale Convective Systems and Other Precipitation Features over the Tropical Americas and Surrounding Seas as Seen by TRMM, Int. J. Climatol., 37, 380-397, 10.1002/joc.5009
Posada-Marín, J. A., Rendón, A. M., Mejia, J. F., Salazar, J. F., Villegas, J. C. (2017). WRF downscaling improves ERA-Interim representation of precipitation representation during El Niño over tropical Andean valleys during El Niño: Implications for climate change projections, Climate Dynamics, Accepted.
Chen, R., McClean, J. L., Gille, S. T., Yulaeva, E., Cerovecki, I., Craig, T., Koracin, D. R., Maltrud, M., McCord, T. E., Mejia, J. F., Hendershott, M. (2017). Effect of atmospheric forcing resolution on the ocean model fidelity on sea level variability in the North Pacific, Ocean Modelling, Accepted.
Nauslar, N. J., Brown, T. J., Kaplan, M. L., Mejia, J. F., Hatchett, B. J. (2017). Examining the North American Monsoon’s impact on wildfire activity in the southwest United States, International Journal of Climatology, Accepted.
McDonough, F., Mejia, J. F., Shourd, K. N., Carroll, R. W., Lutz, A. D., Dean, J., Juchtzer, J. W., Huggins, A. W., Kaplan, M. L., DeLuna, R., Trembath, C. (2017). Weather Modification Feasibility Study – Laramie Range Siting and Design, Level III Study, April 30, 2017, Project report prepared for the Wyoming Water Development Office, Cheyenne, WY.
2016
McEvoy, D. J., Huntington, J. L., Mejia, J. F., Hobbins, M. (2016). Improved seasonal drought forecasts using reference evapotranspiration anomalies, Geophys. Res. Lett., 43 (1), 377-385, 10.1002/2015GL067009
Hatchett, B. J., Koracin, D. R., Mejia, J. F., Boyle, D. P. (2016). Assimilating urban heat island effects into climate projections, J. Arid Environ., 128, 59-64, 10.1016/j.jaridenv.2016.01.007
Mejia, J. F., Douglas, M. W., Lamb, P. J. (2016). Observational Investigation of Relationships between Moisture Surges and Mesoscale-to-Large Scale Convection during the North American Monsoon, Int. J. Climatol., 36, 2555-2569
Douglas, M. W., Beida, R., Mejia, J. F., Fuentes, M. (2016). Developing MODIS-based cloud climatologies to aid species distribution modeling and conservation activities, Frontiers of Biogeography, 8 (3), 21 p. 10.21425/F58329532
Elias, E., Rango, A., Steele, C. M., Mejia, J. F., Baca, R., James, D., Gronemeyer, P. (2016). Simulated Impact of Climate Change on Hydrology of Multiple Watersheds Using Traditional and Recommended Snowmelt Runoff Model Methodology, Journal of Water and Climate Change, 7 (4), 665-682, 10.2166/wcc.2016.097
Mejia, J. F., McDonough, F. (2016). WRF Simulations for 8 Storms That Produced Seedable Clouds and Precipitation Over the Upper Colorado River Basin, 53 p., Desert Research Institute: Reno, NV, A report to Colorado Water Conservation Board and Wilson Water Group.
McDonough, F., Mejia, J. F., Shourd, K. N., Carroll, R. W., Lutz, A. D., Dean, J., Juchtzer, J. W., Huggins, A. W., Kaplan, M. L. (Eds.) Mejia, J. F., McDonough, F. (2016). Lagrangian Particle Tracking Dispersion and Regional Climate Modeling, Weather Modification–Laramie Range Siting and Design – Level III Study, 167 p., Desert Research Institute: Reno, NV, A report to Wyoming Water Development Office.
Koracin, D. R., Dorman, C. (Eds.) Dorman, C., Mejia, J. F., Koracin, D. R., McEvoy, D. J. (2016). Worldwide Marine Fog Occurrence and Climatology, In Marine Fog – Challenges and Advancements in Observations and Forecasting
2015
Backes, T. M., Kaplan, M. L., Schumer, R., Mejia, J. F. (2015). A Climatology of the Vertical Structure of Water Vapor Transport to the Sierra Nevada in Cool Season Atmospheric River Precipitation Events, J. Hydrometeor., 16 (3), 1029-1047 , 10.1175/JHM-D-14-0077.1
Elias, E., Rango, A., Steele, C., Mejia, J. F., Smith, R. (2015). Assessing climate change impacts on water availability of snowmelt-dominated basins of the Upper Rio Grande Basin, J. Hydrology: Regional Studies, 3 (6), 525-546, 10.1016/j.ejrh.2015.04.004
Mejia, J. F., Fenstermaker, L.F., Etyemezian, V. R., Miller, J. J., Jiang, P., Nikolich, G., Gillies, J. A., Lomeli-Uribe, E. A. (2015). Strategies for climate change adaptation at the Armstrong (formerly Dryden) Flight Research Center and within the Mojave Desert Region, A report to NASA AFRC.
McEvoy, D. J., Huntington, J. L., Mejia, J. F., Hobbins, M. T. (2015). Improved Seasonal Drought Forecasts using Reference Evapotranspiration Anomalies, Geophysical Research Letters
2014
McEvoy, D. J., Mejia, J. F., Huntington, J. L. (2014). Use of an Observation Network in the Great Basin to Evaluate Gridded Climate Data, J. Hydrometeorol., 15, 1913-1931
Mejia, J. F., Fenstermaker, L.F., Etyemezian, V. R., Miller, J. J. (2014). NASA Award Number NNX12AF57G: Strategies for climate change adaptation at the Dryden Flight Research Center and within the Mojave Desert region (Project report Year 3)
2013
Dorman, C. E., Mejia, J. F., Koracin, D. R. (2013). Impact of US west coastline inhomogeneity and synoptic forcing on winds, wind stress, and wind stress curl during upwelling season, J. Geophys. Res.-0ceans, 118 (9), 4036-4051, 10.1002/jgrc.20282
Mejia, J. F., Fenstermaker, L.F., Etyemezian, V. R., Miller, J. J. (2013). Strategies for Climate Change Adaptation at the Dryden Flight Research Center and within the Mojave Desert Region [NASA Award Number NNX12AF57G, Project Report, Year 2]
2012
Mejia, J. F., Huntington, J. L., Hatchett, B. J., Koracin, D. R., Niswonger, R. G. (2012). Linking Global Climate Models to an Integrated Hydrologic Model Using an Individual Station Downscaling Approach, Journal of Contemporary Water Research and Education
Mejia, J. F., Hatchett, B. J., Niswonger, R. G., Huntington, J. L., Koracin, D. R. (2012). Linking global climate models to an integrated hydrologic model: Using an individual station downscaling approach, J. Contemporary Water Res. & Educ., 147, 17-27
2010
Mejia, J. F., Douglas, M. W., Lamb, P. J. (2010). Aircraft Observations of the 12-15 July 2004 Moisture Surge Event during the North American Monsoon Experiment, Mon Wea Rev, 138, 3498-3513, 10.1175/2010MWR3228.1
Conference Proceedings
2020
Tomii, Y., Hosseinpour, F., Mejia, J. F., Mitchell, D. L. (2020). An evaluation of cirrus cloud thinning through improved integration of satellite retrievals and climate modeling, American Meteorological Society Annual Meeting (100th anniversary): Boston, MA, January 12, 2020-January 17, 2020, Presented.
2019
Mitchell, D. L., Mejia, J. F., Tomii, Y., Garnier, A. (2019). On the potential role of Arctic cirrus clouds in producing anomalous mid-latitude weather and climate, CESM Atmosphere Model Working Group (AMWG) Meeting, National Center for Atmospheric Research (NCAR): Boulder, CO, February 19, 2019-February 21, 2019, Presented.
Mitchell, D. L., Tomii, Y., Mejia, J. F., Garnier, A. (2019). Constraining WACCM6 cirrus cloud microphysics with CALIPSO (IIR-CALIOP) effective diameter retrievals, American Geophysical Union Fall Meeting: San Francisco, CA, December 9, 2019-December 13, 2019, Presented.
Mitchell, D. L., Mejia, J. F., Tomii, Y., Hosseinpour, F. (2019). Evaluating cirrus cloud thinning using CALIPSO retrievals and the Whole Atmosphere Community Climate Model v. 6, Invited presentation, Geoengineering Modeling Research Consortium (GMRC), Harvard University, School of Engineering and Applied Sciences (SEAS): Cambridge, MA, September 30, 2019, Presented.
Adhikari, P., Mejia, J. F. (2019). Influence of aerosols on precipitation and vertical temperature distribution over the foothills of Himalayas during the Indian summer monsoon, AGU Fall Meeting: San Francisco, CA, December 9, 2019-December 13, 2019, Presented.
Angel, M. C., Mejia, J. F. (2019). Climate Forecast System model heat wave climatology and forecast skill at subseasonal time scales, AGU Fall Meeting: San Francisco, CA, December 9, 2019-December 13, 2019, Presented.
Mejia, J. F., Yepes, L., Poveda, G., Zuluaga, M. D. (2019). Towards a Mechanistic Understanding of One of the Rainiest Spots on Earth, AGU Fall Meeting: San Francisco, CA, December 9, 2019-December 13, 2019, Presented.
Yepes, L., Mejia, J. F., Poveda, G., Mapes, B. E. (2019). On the Choco Low-level Jet and gravity waves over the rainiest place on Earth: Observations and Simulations during CHOCO-JEX, AGU Fall Meeting: San Francisco, CA, December 9, 2019-December 13, 2019, Presented.
Marin, J., Mejia, J. F., Bezanilla, A., Pozo, D., Vichot, A., Borrajero, I. (2019). Convection Parameterization Sensitivity and Hurricane Statistics over the Inter-Americas region, AGU Fall Meeting: San Francisco, CA, December 9, 2019-December 13, 2019, Presented.
McDonough, F., Mejia, J. F. (2019). The San Juan Cloud Seeding Cloud Seeding Study: Final Report, San Juan Water Conservancy District Meeting: Pagosa Springs, CO, October 9, 2019, Presented.
2018
Mitchell, D. L., Mejia, J. F., Garnier, A., Erfani, E. (2018). On the feasibility of cirrus cloud thinning (CCT): A surprising coincidence, 98th AMS Annual Meeting, 21st Conference on Planned and Inadvertent Weather Modification, joint session with Aerosol-Cloud-Climate Interactions on Climate Engineering and Inadvertent Weather Modification: Austin, TX, January 7, 2018-January 11, 2018
Mitchell, D. L., Mejia, J. F., Garnier, A., Hosseinpour, F. (2018). Comparing standard CAM5 against “CALIPSO Cirrus CAM5” and the need for a better cirrus cloud parameterization, CESM Atmosphere Model Working Group (AMWG) Annual Meeting, National Center for Atmospheric Research: Boulder, CO, February 12, 2018-February 14, 2018
Mitchell, D. L., Mejia, J. F., Garnier, A., Hosseinpour, F. (2018). Can changes in cirrus cloud ice nucleation affect the jet stream and storm track?, Atmospheric Radiation Conference, American Meteorological Society: Vancouver, BC, Canada, July 9, 2018-July 13, 2018
Mosadegh Anbaran, E., Mejia, J. F., Wilcox, E.M., Rayne, S. (2018). Vehicle Miles Travel (VMT) trends over Lake Tahoe area and its effect on Nitrogen Deposition, American Geophysical Union Fall Meeting: Washington D.C., December 10, 2018-December 14, 2018, A23M-1803, Accepted.
Mejia, J. F., Wilcox, E.M., Angel, M. C. (2018). Improved skill in North American multi-model ensemble for the Americas, IV International Conference on El Niño Southern Oscillation: ENSO in a warmer Climate (Guayaquil, Ecuador), October 16, 2018-October 18, 2018
Dorman, C. E., Mejia, J. F., Koracin, D. R. (2018). Fog Trend and Interannual-to-Decadal Variability, Canadian Meteorological and Oceanographic Society Congress: Halifax, Canada, June 10, 2018-June 14, 2018
Henao, J. J., Mejia, J. F., Salazar, J. F., Rendón, A. (2018). Dispersion of mobile emissions at sub-kilometer scales for the Aburra Valley in Colombia: Emission disaggregation, identification of pollution hotspots, and scenario evaluation, American Geophysical Union Fall Meeting: Washington, DC, December 10, 2018-December 14, 2018
Rendón, A., Posada, J. A., Henao, J. J., Salazar, J. F., Quintero, O. L., Bernal, N., Mejia, J. F. (2018). WRF Simulation of the Urban Heat Island and its Impact on Wind Dynamics and Air Pollution Transport Mechanisms in a Densely Populated Urban Valley of the Tropical Andes, American Geophysical Union Fall Meeting: Washington, DC, December 10, 2018-December 14, 2018
Mitchell, D. L., Mejia, J. F., Garnier, A., Hosseinpour, F. (2018). On the Potential Role of Arctic Cirrus Clouds in Predicting Anomalous Mid-Latitude Weather and Climate, American Geophysical Union Fall Meeting: Washington, DC, December 10, 2018-December 14, 2018
Mejia, J. F., Gillies, J. A., Etyemezian, V. R. (2018). Very-high resolution (20 m) flow and dust dispersion modeling: Oceano Dunes, Oceano, CA, 10th International Conference on Aeolian Research: Bordeaux, France, June 25, 2018-June 29, 2018
McDonough, F., Mejia, J. F., Shourd, K. N. (2018). Assessing the Cloud Seeding Potential over the Laramie Mountains in Wyoming, AMS 21st Conference on Planned and Inadvertent Weather Modification: Austin, TX, January 7, 2018-January 12, 2018, Presented.
2017
Douglas, M., Mejia, J. F., Beida, R. (2017). Developing MODIS-Based Cloud Climatologies for Biogeographical Applications: Current Procedures and Next Steps, 8th Biennial Conference, Intenational Biogeography Society: Tucson, AZ, January 2017.
Mitchell, D. L., Mejia, J. F., Garnier, A., Avery, M. (2017). A potential radiative forcing error from the cirrus cloud pre-existing ice assumption, CESM Atmosphere Model Working Group (AMWG) Annual Meeting: National Center for Atmospheric Research, February 27, 2017-March 1, 2017
Mitchell, D. L., Garnier, A., Mejia, J. F., Avery, M. (2017). The seasonal cycle of Arctic cirrus clouds and its possible relevance to jet steam dynamics, Fourth Santa Fe Conference on Global and Regional Climate Change: Santa Fe, NM, February 5, 2017-February 10, 2017
Giordano, M., Mejia, J. F., Wilcox, E.M. (2017). On Conditional Summertime Day-Ahead Solar Irradiance Forecasting: Development Beyond Numerical Weather Prediction Models, Solar energy-water-environment nexus in Nevada annual meeting: Las Vegas, NV, March 27, 2017-March 29, 2017
Mejia, J. F. (2017). Atmospheric Modeling for Air Pollution Problems, Workshop on Atmospheric Pollution and Its Impact on Human Health, Agriculture and Natural Ecosystems: A Mathematical Modeling Perspective: Medellín, Colombia, September 25, 2017-September 27, 2017, Invited presentation.
Mejia, J. F. (2017). Improvement of the multimodel super-ensemble technique for seasonal forecasts, Servicio Nacional de Hidrología y Meteorología (SENAHMI): Lima, Peru, Invited presentation.
Mejia, J. F., Wilcox, E.M. (2017). Long Range Weather Forecasting: Improvement of the Multimodel Super-Ensemble Technique for Seasonal Forecasts, Fifth Annual California Utility Forecasting Meeting (CUFM ’17): San Diego, CA, June 12, 2017, Invited presentation.
Angel, M. C., Mejia, J. F., Chang, H., Ochoa, C. A., Castro, C. L. (2017). Annual and diurnal precipitation bimodal distributions as simulated by WRF-based CORDEX–Central America, Regional Climate Modeling I, American Geophysical Union Fall Meeting: New Orleans, LA
Mitchell, D. L., Mejia, J. F., Garnier, A., Hosseinpour, F., Avery, M. A. (2017). A potential regulation of jet stream behavior by changes in Arctic cirrus cloud formation mechanism and coverage, Session Proposal: A54G The Dynamics of the Large-Scale Atmospheric Circulation in Present and Future Climates: Jet Streams, Storm Tracks, Stationary Waves, and Monsoons III, American Geophysical Union Fall Meeting: New Orleans, LA, December 11, 2017-December 15, 2017
Yepes, J., Mejia, J. F., Poveda, G. (2017). ChocoJEX: A research programme focus on the Choco low level jet over the far eastern Pacific and Western Colombia – Reanalysis Evaluation, 5th International Conference on Reanalysis: Rome, Italy, November 2017.
Vallejo-Bernal, S., Yepes, J., Poveda, G., Mejia, J. F. (2017). Validación de la Precipitación Modelada con WRF Mediante Información del Satélite TRMM sobre el Trópico Americano, Seminario Nacional de Ciencias y Tecnologías del Mar – SENALMAR: Medellín, Colombia, October 2017.
2016
Wilcox, E.M., Mejia, J. F., Shan, Y., Giordano, M. (2016). Solar Irradiance Forecasting, Solar Energy-Water-Environment Nexus in Nevada Annual Meeting: Reno, March 14, 2016-March 15, 2016
Rendón, A., Posada, J. A., Salazar, J. F., Mejia, J. F., Villegas, J. (2016). WRF Improves Downscaled Precipitation During El Niño Events Over Complex Terrain in Northern South America: Implications for Deforestation Studies, AGU Fall Meeting: San Francisco, CA, December 12, 2016-December 16, 2016
Yepes, J., Poveda, G., Mejia, J. F., Cabeza, L., Rueda, D. C. (2016). CHOCO-JEX: A Research Programme Focused on the CHOCO Low-Level Jet over the Far Eastern Pacific and Western Colombia ? Initial Results,, 8th EGU Leonardo Conference – Series on the Hydrological Cycle: Ourense, Spain, October 25, 2016-October 27, 2016, 10.13140/RG.2.2.36532.65925
Pathak, C. S., Reinhart, D. (Eds.) Chen, C., Ahmad, S., Mejia, J. F., Kalra, A. (2016). Study of Lehman Creek Watershed’s Hydrologic Response to Climate Change Using Downscaled CMIP5 Projections, Proceedings, 508-517, World Environmental and Water Resources Congress 2016: West Palm Beach, FL, May 22, 2016-May 26, 2016, 10.1061/9780784479872.052
Mitchell, D. L., Garnier, A., Mejia, J. F., Avery, M. A., Erfani, E. (2016). Insights on the Feasibility, Modeling and Field Testing of Cirrus Cloud Thinning from Satellite Remote Sensing, Poster, AGU Fall Meeting: San Francisco, CA, December 12, 2016-December 16, 2016
Mujtaba, S. M., Husain, T., Mejia, J. F., Alharbi, B. (2016). Identifying Appropriate Chemical Mechanisms for Photochemical Air Quality Modeling in Arid Regions, A&WMA’s 109th Annual Conference: New Orleans, LA, June 20, 2016-June 23, 2016
2015
McEvoy, D. J., Hobbins, M., Huntington, J. L., Mejia, J. F., Hain, C., Anderson, M., Verdin, J. (2015). Exploring the use of physically based evaporative demand anomalies to improve seasonal drought prediction, Nevada Water Resources Association
2014
McEvoy, D. J., Mejia, J. F. (2014). Regional Climate Simulations of Cold Season Precipitation over the Great Basin, Presentation at the AMS 26th Conference on Climate Variability and Change, 94th AMS Annual Meeting: Atlanta, GA, February 2, 2014
Mejia, J. F., Etyemezian, V. R., Fenstermaker, L.F., Miller, J. J., Nikolich, G. (2014). Climate Change Impacts at NASA ARMSTRONG (Dryden) flight research Center, NASA CASI/ROSES 4th Annual Climate Adaptation Workshop: Palmdale, CA, January 23, 2014
McEvoy, D. J., Hobbins, M., Mejia, J. F., Hain, C., Anderson, M., Verdin, J. (2014). Exploring the use of physically based evaporative demand anomalies to improve seasonal drought prediction, American Geophysical Union 2014 Fall Conference: San Francisco, CA, December 15, 2014-December 19, 2014
Dorman, C. E., Mejia, J. F., Koracin, D. R., McEvoy, D. J. (2014). Long Term Increase In Fog Occurrence Over The NW Pacific And NW Atlantic Fog Maximums, Decadal-Multidecadal variability in Pacific and Atlantic basins, Poster, AMS 94th annual Meeting 2014: Atlanta, GA, February 2, 2014
Dorman, C. E., Mejia, J. F., Koracin, D. R., McDoulett, M. C. (2014). Interaction of the Marine Atmosphere, Coastal Topography and Sea Surface Temperature on Marine Fog Distribution Along the West Coast of North America: Atmosphere, Biosphere, Land, and Ocean Interactions, 2014 AGU Fall Meeting: San Francisco, CA, December 15, 2014
Douglas, M. W., Rahama, B., Mejia, J. F. (2014). A Very High Resolution Cloud Climatology of Mexico, Union Geofisica Mexicana (Mexican Geophysical Union): Puerto Vallarta, Mexico, November 3, 2014
Elias, E., Rango, A., Steele, C., Mejia, J. F., Baca, R., James, D., Schrader, S. (2014). Simulated Impact of Climate Change on Hydrology of Multiple Watersheds Using Traditional and Recommended Snowmelt Runoff Model Methodology, Advancing Hydrologic Predictions in Snow- and Glacier-Fed River Systems, 2014 AGU Fall Meeting: San Francisco, CA, December 15, 2014
Mejia, J. F., Huntington, J. L., Niswonger, R. G. (2014). Uncertainty Transfer in Modeling Layers: From GCM to downscaling to hydrologic surface-groundwater modeling, In: Ames, D.P., Quinn, N.W.T., Rizzoli, A.E. (Eds.),, Proceedings of the 7th International Congress on Environmental Modelling and Software: San Diego, CA, June 15, 2014
Mitchell, D. L., Mishra, S., Comstock, J., Lohmann, U., Kuebbeler, M., Mejia, J. F., Turner, D., Rasch, P. (2014). Relevance of the negative Twomey effect for cirrus clouds, 94th Annual Meeting of the American Meteorological Society: Atlanta, GA, February 6, 2015
2013
Koracin, D. R., Mejia, J. F., King, K. C., Dorman, C. E. (2013). Upwelling and Coastal Climate, Climate Trends and Projections in the Coastal Environment?Part I, Presented at the 11th Symposium on the Coastal Environment, 93rd American Meteorological Society Annual Meeting: Austin, TX, January 5, 2013
Mitchell, D. L., Mejia, J. F., Kuebbeler, M., Lohmann, U., Xiao, M. (2013). Seeding of Cirrus Clouds to Reduce Global Warming, Applications of Numerical Models to Weather and Climate Modification,, 19th Conference on Planned and Inadvertent Weather Modification, 93rd American Meteorological Society Annual Meeting: Austin, TX, January 6, 2013
Perryman Rayne, N. M., Mejia, J. F. (2013). Atmospheric Rivers in Regional Climate Models for the Western U.S., Poster presentation at the 25th Conference on Climate Variability and Change, 93rd American Meteorological Society Annual Meeting: Austin, TX, January 5, 2013
Sauceda, D. O., Huntington, J. L., Mejia, J. F. (2013). Vulnerability and Resilience of Urban Water Systems under Uncertain Climate Change Scenarios, Poster presentation at the 25th Conference on Climate Variability and Change, 93rd American Meteorological Society Annual Meeting: Austin, TX, January 5, 2013
Elias, E., Steele, C. M., Rango, A., Mejia, J. F. (2013). Assessing climate change impacts on water availability of snowmelt dominated watersheds of the Upper Rio Grande Advances in Hydrometeorological Predictions and Applications, AGU Fall Meeting: San Francisco, CA, December 9, 2013
Mitchell, D. L., Mejia, J. F., Lohmann, U., Kuebbeler, M., Mishra, S., Comstock, J., Rasch, P. (2013). Microphysical and radiative impacts of the cirrus cloud negative Twomey effect in two GCMs based on SPARTICUS data, Oral presentation, Atmospheric System Research (ASR) 2013 Fall Working Groups,: Washington, D.C., November 4, 2013
Mitchell, D. L., Mejia, J. F., Kuebbeler, M., Xiao, M., Rasch, P. (2013). Cirrus Cloud Climate Engineering, Oral presentation at the AMS Annual Meeting: Austin, TX, January 6, 2013
Mitchell, D. L., Mishra, S., Comstock, J., Mejia, J. F., Kuebbeler, M., Lohmann, U. (2013). Relevance of the negative Twomey effect for ice clouds, Poster presentation, Gordon Research Conference: Radiation and Climate: New London, NH, July 6, 2013
Mitchell, D. L., Mejia, J. F., Kuebbeler, M., Lohmann, U., Mishra, S., Comstock, J. (2013). Constraining the Negative Twomey Effect for Cirrus Clouds, Poster presentation, Gordon Research Conference: Radiation and Climate: New London, NH, July 6, 2013
Perryman Rayne, N. M., Mejia, J. F. (2013). Development and Application of a Reanalysis-Based Atmospheric River Detection Algorithm, Novel Application of Observations to the Evaluation of Regional Climate Models, AGU Fall Meeting: San Francisco, CA, December 9, 2013
Rango, A., Caitriana, M., Steele, M., Elias, E., Mejia, J. F., Fernald, A. (2013). Potential impacts of climate warming on runoff from snowmelt: a case study of two mountainous basins in the Upper Rio Grande, Advances in Hydrometeorological Predictions and Applications, AGU Fall Meeting: San Francisco, CA, December 9, 2013
Backes, T. M., Schumer, R., Kaplan, M. L., Redmond, K. T., Mejia, J. F. (2013). Combined effect of mid-level jets and atmospheric rivers on winter precipitation in the eastern Sierra Nevada, Vol. 1, p. 1281, Proceedings, In AGU Fall Meeting Abstracts: San Francisco, CA, December 9, 2013
2012
Dorman, C. E., Mejia, J. F., Koracin, D. R. (2012). Simulation of Atmospheric Marine Layer off Southern Oregon and Northern California, 92nd American Meteorological Society Annual Meeting, 10th Symposium on the Coastal Environment: New Orleans, LA, January 22, 2012
Hatchett, B. J., Koracin, D. R., Mejia, J. F. (2012). Untangling the extreme urban heat island of the arid, complex terrain city of Reno, NV, Presentation at the Third Annual Symposium on Environment and Health, 92nd Annual American Meteorological Society Meeting: New Orleans, LA, January 22, 2012
Hatchett, B. J., Dorman, C. E., Jiang, J., Kaplan, M. L., Koracin, D. R., Mejia, J. F., McCord, T. E., Vellore, R. (2012). Midtropospheric Response to a Siberian Cold Air Outbreak over the Kuroshio Current in the Pacific Basin, Dynamics and Predictability of Midlatitude Storms in a Changing Climate, Presentation at AGU Fall Meeting: San Francisco, CA, December 3, 2012
Jericevic, A., Koracin, D. R., Mejia, J. F., Chow, J. C., Watson, J. G., Fujita, E. M., Minoura, A. (2012). Integrated approach for analysis of the nonlinear interactions of pollutants in coastal areas due to climate change, Presentation, ITM – NATO/SPS International Technical Meeting on Air Pollution Modelling and its Application: The Netherlands, May 7, 2012
King, K. C., Mejia, J. F., McEvoy, D. J., Koracin, D. R. (2012). Evaluation of Regional Downscaling Predictions of Future Drought Probabilities in the Western United States, AMS 92nd Annual Meeting: New Orleans, LA, January 22, 2012
King, K. C., Mejia, J. F., Koracin, D. R. (2012). : Interannual variability of Surface Temperature and Precipitation using Regional Climate Modeling over Western United States, 4th Annual EPSCoR Western Consortium Tri-State Meeting: Sun Valley, ID, April 2, 2012
Koracin, D. R., King, K. C., Mejia, J. F., Dorman, C. E., Kunkel, K. E. (2012). Current Issues and Challenges in Climate Predictions of Coastal Upwelling, 92nd American Meteorological Society Annual Meeting, 10th Symposium on the Coastal Environment: New Orleans, LA, January 22, 2012
Koracin, D. R., Vellore, R., Mejia, J. F., Jiang, J., Dorman, C. E., Cerovecki, I., McClean, J., Hendershott, M. C. (2012). Mesoscale atmospheric and ocean dynamics over Kuroshio Extension region: AGU-OSLO-Ocean, Presentation, Ocean Sciences Meeting: Salt Lake City, UT, February 20, 2012
Koracin, D. R., Hatchett, B. J., Dorman, C. E., Cerovecki, I., Jiang, J., Vellore, R., Mejia, J. F., McCord, T. E. (2012). Air-sea Interaction over the Kuroshio Current during a Cold-air Outbreak, Boundary Layer Processes in the Climate System, AGU Fall Meeting: San Francisco, CA, December 3, 2012
Mejia, J. F., Koracin, D. R. (2012). Correcting GCM SST Biases to Improve RCM Simulations Over Coastal Upwelling Dominated Regimes, 92nd American Meteorological Society Annual Meeting, 10th Symposium on the Coastal Environment: New Orleans, LA, January 22, 2012
Mejia, J. F., Perryman Rayne, N. M. (2012). Climatological Impact of Atmospheric River Based on NARCCAP and DRI-RCM Datasets, Findings From Climate Change Assessments: Posters From the US National Climate Assessment and the North American Regional Climate Change Assessment Program, AGU Fall Meeeting: San Francisco, CA, December 3, 2012
Mitchell, D. L., Mejia, J. F., Xiao, M., Rasch, P. J., Kuebbeler, M. (2012). Cirrus Cloud Climate Engineering, International Conference on Clouds and Precipitation (ICCP): Leipzig, Germany, July 30, 2012-August 3, 2012
2011
Hatchett, B. J., Mejia, J. F., Huntington, J. L., Koracin, D. R. (2011). Evaluation of three climate downscaling techniques in forcing a coupled hydrological model in a snow-dominated watershed in the Lake Tahoe basin, 91st American Meteorological Society Meeting: Seattle
2010
Hatchett, B. J., Kaplan, M. L., Koracin, D. R., Mejia, J. F. (2010). Playing CSI: A case study of the November 12, 2009 Bozeman, Montana Snow Event, Proceedings of the 2010 International Snow Science Workshop
Other
2017
Fearon, M. G., Kaplan, M. L., Mejia, J. F. (2017). Hurricane Sandy (2012). Part II: The dynamics within the local environment preceding rapid development, in revision mode for resubmission
Fearon, M. G., Kaplan, M. L., Mejia, J. F. (2017). Hurricane Sandy (2012). Part I: The tropical-extratropical environment preceding incipient development, in revision mode for resubmission