Research

[ 2021 ]

Tardif, R., G. J. Hakim, K. A. Bumbaco, M. A. Lazzara, K. Manning, D. Mikolajczyk, and J. Powers, 2021: Assessing observation network design predictions for monitoring Antarctic surface temperature. Quart. J. Roy. Meteor. Soc, doi: 10.1002/QJ.4226 [ link ] Special collection on Impact of Polar Observations on Predictive Skill.

Osman, M. B., J. E. Tierney, J. Zhu, R. Tardif, G. J. Hakim, J. King and C. J. Poulsen, 2021: Globally resolved surface temperature since the Last Glacial Maximum. Nature, 599, 239-244, doi:10.1038/s41586-021-03984-4 [ link ]

Parsons, L. A., D. Amrhein, S. Sanchez, R. Tardif, M. K. Brennan, G. J. Hakim, 2021: Do multi-model ensembles improve reconstruction skill in paleoclimate data assimilation? Earth and Space Science, 8, e2020EA001467, doi:10.1029/2020EA001467 [ link ]

Feng, X, Q. Ding, L. Wu, C. Jones, I. Baxter, R. Tardif, S. Stevenson, J. Emile-Geay, J. Mitchell, L. Carvalho, E. Steig, 2021: A multidecadal-scale tropically-driven global teleconnection over the past millennium and its recent strengthening. J. Climate., 34(7), 2549–2565, doi:10.1175/JCLI-D-20-0216.1 [ link ]

[ 2020 ]

Hakim, G. J., K. Bumbaco, R. Tardif, J. Powers, 2020: Optimal network design applied to monitoring and forecasting temperature in Antarctica. Mon. Wea. Rev., 148, 857–873, doi: 10.1175/MWR-D-19-0103.1. [ link ]

Marzban, C, R. Tardif, S. Sandgathe, 2020: A sensitivity analysis of two mesoscale models: COAMPS and WRF. Mon. Wea. Rev., 148 (7), 2997–3014. doi: 10.1175/MWR-D-19-0271.1 [ link ]

Marzban, C, R. Tardif, S. Sandgathe, 2020: Sensitivity analysis of the spatial structure of forecasts in mesoscale models: Noncontinuous model parameters. Mon. Wea. Rev., 148 (4), 1717–1735, doi: 10.1175/MWR-D-19-0321.1. [ link ]

[ 2019 ]

Tardif, R., G. J. Hakim, W. A. Perkins, K. A. Horlick, M. P. Erb, J. Emile-Geay, D. M. Anderson, E. J. Steig and D. Noone, 2019: Last Millennium Reanalysis with an expanded proxy database and seasonal proxy modeling. Clim. Past., 15, 1251-1273, doi:10.5194/cp-15-1251-2019. [ link ]

Anderson, D. M., R. Tardif, K. Horlick, M. P. Erb, G. J. Hakim, D. Noone, W. A. Perkins, E. J. Steig, 2019: Additions to the Last Millennium Reanalysis multi-proxy database. Data Science Journal, 18(1), doi: 10.5334/dsj-2019-002. [ link ]

Marzban, C., R. Tardif, N. Hryniw, S. Sandgathe, 2019: A methodology for sensitivity analysis of spatial features in forecasts: The Stochastic Kinetic Energy Backscatter Scheme. Met. App., 26(3), 454-467, doi: 10.1002/met.1775. [ link ]

[ 2018 ]

Singh, H.K.A., G. J. Hakim, R. Tardif, J. Emile-Geay, D. Noone, 2018: Insights into Atlantic multidecadal variability using the Last Millennium Reanalysis framework. Clim. Past., 14 (2), 157-174, doi:10.5194/cp-14-157-2018 [ link ]

[ 2017 ]

Tardif, R., 2017: Precipitation and Fog. Book chapter in Koracin, D., and C. E. Dorman, eds. Marine Fog: Challenges and Advancements in Observations and Forecasting. Springer Publ. [ link ]

Penny, S. G., S. Akella, M. Buhner, M. Chevallier, F. Counillon, C. Draper, S. Frolov, Y. Fujii, A. Karspeck, A. Kumar, P. Laloyaux, J.-F. Mahfouf, M. Martin, M. Peña, P. de Rosnay, A. Subramanian, R. Tardif, X. Wu, 2017: Coupled Data Assimilation for Integrated Earth System Analysis and Prediction: Goals, Challenges, and Recommendations. World Weather Research Programme (WWRP) Report 2017-3. World Meteorological Organization. [ link ]

[ 2016 ]

Hakim, G. J., J. Emile-Geay, E. J. Steig, D. Noone, D. A. Anderson, R. Tardif, N. Steiger, W. A. Perkins, 2016: The Last Millennium Climate Reanalysis project: Framework and first results. JGR (Atmospheres), doi: 10.1002/2016JD024751. [ link ]

[ 2015 ]

Tardif, R., G. J. Hakim, and C. Snyder, 2015: Coupled atmosphere-ocean data assimilation experiments with a low-order model and CMIP5 model data. Climate Dyn., 45 (5-6), 1415-1627, doi:10.1007/s00382-014-2390-3. [ link ]

[ 2014 ]

Tardif, R., G. J. Hakim, and C. Snyder, 2014: Coupled atmosphere-ocean data assimilation experiments with a low-order climate model. Climate Dyn., 43 (5-6), 1631-1643, doi: 10.1007/s00382-013-1989-0. [ link ]

[ 2012 ]

Tardif, R., and S. Laroche, 2012: A neutral equivalent wind observation operator for variational assimilation of scatterometer ocean surface wind data. Quart. J. Roy. Meteor. Soc., 138, 2086-2104. [ link ]

[ 2010 ]

Haeffelin, M., T. Bergot, T. Elias, R. Tardif, D. Carrer, P. Chazette, M. Colomb, P. Drobinski, E. Dupont, J-C. Dupont, L. Gomes, L. Musson-Genon, C. Pietras, A. Plana-Fattori, A. Protat, J. Rangognio, J-C. Raut, S. Rémy, D. Richard, J. Sciare, and X. Zhang, 2010: ParisFog, shedding new light on fog physical processes. Bull. Amer. Meteor. Soc., 91(6), 767-783. [ link ]

Tardif, R., and R. M. Rasmussen, 2010: Evaporation of non-equilibrium raindrops as a fog formation mechanism. J. Atmos. Sci., 67(2), 345-364. [ link ]

[ 2009 ]

Roquelaure, S., R. Tardif, S. Rémy and T. Bergot, 2009: Skill of a ceiling and visibility Local Ensemble Prediction System (LEPS) according to fog-type prediction at Paris International Airport. Wea. Forecasting, 24(6), 1511-1523. [ link ]

[ 2008 ]

Tardif, R., and R. M. Rasmussen, 2008: Process-oriented analysis of environmental conditions associated with precipitation fog events in the New York City region. J. Appl. Meteor. Climatol., 47(6), 1681-1703. [ link ]

Bergot, T. M. Haeffelin, L. Musson-Genon, R. Tardif, and co-authors, 2008: Paris-Fog: des chercheurs dans le brouillard. La Météorologie, 62, 48-58. [ link ]

[ 2007 ]

Tardif, R., and R. M. Rasmussen, 2007: Event-based climatology and typology of fog in the New York City region. J. Appl. Meteor. Climatol., 46(8), 1141-1168. [ link ]

Tardif, R., 2007: The impact of vertical resolution in the explicit numerical forecasting of radiation fog: A case study. Pure Appl. Geophys. , 164, 1221-1240. [ link ]

Gultepe, I., R. Tardif, S. C. Michaelides, J. Cermak, A. Bott, J. Bendix, M. D. Müller, M. Pagowski, B. K. Hansen, G. P. Ellrod, W. Jacobs, G. Toth, and S. Cober, 2007: Fog research: A review of past achievements and future perspectives. Pure Appl. Geophys. , 164, 1121-1159. [ link ]

International Conferences

Tardif, R., S. Laroche, M. Reszka, and J. St-James, 2011: An equivalent neutral wind observation operator for the variational assimilation of scatterometer ocean surface wind data (talk). EUMETSAT/ESA Scatterometer Science Conference, Darmstadt, Germany. [ pdf ]

Cotton, J., R. Tardif, H. Hersbach, D. Offiler and B. Conway, 2011: NWP SAF scatterometer monitoring (poster). NWP SAF Scatterometer Data Assimilation Workshop, Darmstadt, Germany. [ pdf ]

Tardif, R., M. Reszka, S. Laroche and J. St-James, 2010: Improving scatterometer ocean wind vector data assimilation in Environment Canada's global variational analysis and forecast system. 17^th Conference on Satellite Meteorology and Oceanography, Annapolis, MD. [ pdf ]

Tardif, R., S. Laroche, M. Reszka and J. St-James, 2010: Status of Scatterometer Ocean Wind Vector Data Assimilation in Environment Canada's Global Variational Analysis and Forecast System (talk). 1^st International Ocean Vector Wind Science Team meeting, Barcelona, Spain [ pdf ]

Reszka, M, S. Laroche, R. Tardif, and J. St-James, 2009: Assimilation of ASCAT scatterometer winds in the MSC analysis system. 43^rd Congress of the Canadian Meteorological and Oceanographic Society, Halifax, Nova Scotia. [ link ]

Tardif, R., 2006: Some results from a sounding enhanced observing period focused on low ceiling and visibility in the northeastern United States. 12^th Conference on Aviation, Range and Aerospace Meteorology, Atlanta, GA. [ pdf ]

Tardif, R., 2006: A climatological study of low ceiling and fog events associated with the occurrence of precipitation in the northeastern United States. 12^th Conference on Aviation, Range and Aerospace Meteorology, Atlanta, GA. [ pdf ]

Landolt, S. D., R. Tardif and P. H. Herzegh, 2006: A comparison of atmospheric profiles using a twelve channel microwave profiling radiometer and radiosondes during low ceiling events. 12^th Conference on Aviation, Range and Aerospace Meteorology, Atlanta, GA. [ pdf ]

Tardif, R., 2004: Characterizing fog occurrences in the Northeastern United States using historical data. 11^th Conference on Aviation, Range and Aerospace Meteorology, Hyannis Port, MA. [ pdf ]

Tardif, R., J. Cole, P. H. Herzegh, S. D. Landolt, R. M. Rasmussen and M. L. Tryhane, 2004: First observations of fog and low ceiling environments at the FAA northeast ceiling and visibility field site. 11^th Conference on Aviation, Range and Aerospace Meteorology, Hyannis Port, MA. [ pdf ]

Landolt, S. D., R. Tardif and P. H. Herzegh, 2004: A case study of thermodynamic profile retrieval using a microwave radiometer at vertical and off-vertical incidence. 11^thConference on Aviation, Range and Aerospace Meteorology, Hyannis Port, MA. [ pdf ]

Invited Talks

"Understanding precipitation fog: fundamental research using field observations and numerical modeling". 2^nd Fog Remote Sensing and Modeling (FRAM) workshop, May 2008, Dalhousie Univ., Halifax, Canada. [ ppt ]

"Fog field experiments in France, from ParisFog to ToulouseFog: goals, and description of the observations". Co-author with Thierry Bergot. 2^nd Fog Remote Sensing and Modeling (FRAM) workshop, May 2008, Dalhousie Univ., Halifax , Canada. [ ppt ]

"Characterizing the Response of Simulated Atmospheric Boundary Layers to Stochastic Cloud Radiative Forcing", NCAR/Institute for Mathematics Applied to Geosciences (IMAGe) and Statistics and Applied Mathematics Sciences Institute (SAMSI) Workshop on Applications of Statistics to Numerical Models, May 2007, NCAR, Boulder, Colorado. [ ppt ]

"Fog and Low Cloud Ceilings in the Northeastern United States: Climatology and Dedicated Field Study". Fog Remote Sensing and Modeling (FRAM) workshop, June 2005, UQAM, Montréal, Canada. [ ppt ]

"Some Research and Development Activities Toward the Improvement of Short-Term Forecasts of Low Ceiling and Reduced Visibility (C&V) Conditions in the United States". COST 722 Expert Meeting, October 2004, Météo-France, Toulouse, France. [ ppt ]

Ph.D. Dissertation

Characterizing Fog and the Physical Mechanisms Leading to its Formation during Precipitation in a Coastal Area of the Northeastern United States. University of Colorado at Boulder, May 2007. [ pdf ]

Other Documents

Tardif, R., 2006: Calibration procedure of the Droplet Measurement Technologies' FM-100 fog droplet spectrometer and history of Calibration tests. [ pdf ]

Tardif, R., 2005: Fog and low cloud ceiling environments observed during the Long Island Fog Regimes (LIFR) field program. [ pdf ]

Tardif, R., 2003: Field calibration of the ECH2O soil moisture probes. [ pdf ]

Tardif, R., 2003: A preliminary numerical sensitivity analysis of marine fog formation under conditions observed in the northeastern United States using the COBEL 1D model. [ pdf ]

Tardif, R., 2002: A numerical sensitivity study of the boundary layer evening transition to the direct radiative effects of lower tropospheric aerosols. [ pdf ]

Tardif, R., 2002: Boundary layer aerosol backscattering and its relationship to relative humidity from a combined Raman-elastic backscatter lidar. [ pdf ]

Tardif, R., 2001: Dew and frost deposition and their role in the regulation of radiation fog onset: a numerical sensitivity study . [ pdf ]