☰

Tianfeng Chai, Ph.D. - Publications

Affiliations: 
2002 University of Iowa, Iowa City, IA 
Area:
Mechanical Engineering, Geotechnology, Operations Research
Tree Info Similar researchers PubMed Report error

49 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Zhao S, Russell MG, Hakami A, Capps SL, Turner MD, Henze DK, Percell PB, Resler J, Shen H, Russell AG, Nenes A, Pappin AJ, Napelenok SL, Bash JO, Fahey KM, ... ... Chai T, et al. A multiphase CMAQ version 5.0 adjoint. Geoscientific Model Development. 13: 2925-2944. PMID 33343831 DOI: 10.5194/Gmd-13-2925-2020  0.414
2020 Chen Y, Shen H, Kaiser J, Hu Y, Capps SL, Zhao S, Hakami A, Shih J, Pavur GK, Turner MD, Henze DK, Resler J, Nenes A, Napelenok SL, Bash JO, ... ... Chai T, et al. High-resolution Hybrid Inversion of IASI Ammonia Columns to Constrain U.S. Ammonia Emissions Using the CMAQ Adjoint Model Atmospheric Chemistry and Physics. 1-25. DOI: 10.5194/Acp-2020-523  0.42
2020 Wang L, Yu S, Li P, Chen X, Li Z, Zhang Y, Li M, Mehmood K, Liu W, Chai T, Zhu Y, Rosenfeld D, Seinfeld JH. Significant wintertime PM 2.5 mitigation in the Yangtze River Delta, China from 2016 to 2019: observational constraints on anthropogenic emission controls Atmospheric Chemistry and Physics. 1-31. DOI: 10.5194/Acp-2020-510  0.359
2020 Kim HC, Chai T, Stein A, Kondragunta S. Inverse modeling of fire emissions constrained by smoke plume transport using HYSPLIT dispersion model and geostationary satellite observations Atmospheric Chemistry and Physics. 20: 10259-10277. DOI: 10.5194/Acp-20-10259-2020  0.38
2018 Maurer C, Baré J, Kusmierczyk-Michulec J, Crawford A, Eslinger PW, Seibert P, Orr B, Philipp A, Ross O, Generoso S, Achim P, Schoeppner M, Malo A, Ringbom A, Saunier O, ... ... Chai T, et al. International challenge to model the long-range transport of radioxenon released from medical isotope production to six Comprehensive Nuclear-Test-Ban Treaty monitoring stations. Journal of Environmental Radioactivity. PMID 29525108 DOI: 10.1016/J.Jenvrad.2018.01.030  0.439
2018 Chai T, Stein A, Ngan F. Weak-constraint inverse modeling using HYSPLIT-4 Lagrangian dispersion model and Cross-Appalachian Tracer Experiment (CAPTEX) observations – effect of including model uncertainties on source term estimation Geoscientific Model Development. 11: 5135-5148. DOI: 10.5194/Gmd-11-5135-2018  0.384
2017 Tang Y, Pagowski M, Chai T, Pan L, Lee P, Baker B, Kumar R, Monache LD, Tong D, Kim H. 3D-Var versus Optimal Interpolation for Aerosol Assimilation: a Case Studyover the Contiguous United States Geoscientific Model Development Discussions. 1-27. DOI: 10.5194/Gmd-2017-147  0.416
2017 Tang Y, Pagowski M, Chai T, Pan L, Lee P, Baker B, Kumar R, Monache LD, Tong D, Kim H. A case study of aerosol data assimilation with the Community Multi-scale Air Quality Model over the contiguous United States using 3D-Var and optimal interpolation methods Geoscientific Model Development. 10: 4743-4758. DOI: 10.5194/Gmd-10-4743-2017  0.426
2017 Chai T, Crawford A, Stunder B, Pavolonis MJ, Draxler R, Stein A. Improving volcanic ash predictions with the HYSPLIT dispersion model by assimilating MODIS satellite retrievals Atmospheric Chemistry and Physics. 17: 2865-2879. DOI: 10.5194/Acp-17-2865-2017  0.444
2017 Chai T, Kim H, Pan L, Lee P, Tong D. Impact of Moderate Resolution Imaging Spectroradiometer Aerosol Optical Depth and AirNow PM2.5 assimilation on Community Multi-scale Air Quality aerosol predictions over the contiguous United States Journal of Geophysical Research: Atmospheres. 122: 5399-5415. DOI: 10.1002/2016Jd026295  0.398
2016 Eslinger PW, Bowyer TW, Achim P, Chai T, Deconninck B, Freeman K, Generoso S, Hayes P, Heidmann V, Hoffman I, Kijima Y, Krysta M, Malo A, Maurer C, Ngan F, et al. International challenge to predict the impact of radioxenon releases from medical isotope production on a comprehensive nuclear test ban treaty sampling station. Journal of Environmental Radioactivity. 157: 41-51. PMID 26998569 DOI: 10.1016/J.Jenvrad.2016.03.001  0.363
2016 Turner MD, Henze DK, Capps SL, Hakami A, Zhao S, Resler J, Carmichael GR, Stanier CO, Baek J, Sandu A, Russell AG, Nenes A, Pinder RW, Napelenok SL, Bash JO, ... ... Chai T, et al. Reply to Comment on ‘Premature deaths attributed to source-specific BC emissions in six urban US regions’ Environmental Research Letters. 11: 098002. DOI: 10.1088/1748-9326/11/9/098002  0.319
2015 Tang Y, Chai T, Pan L, Lee P, Tong D, Kim HC, Chen W. Using Optimal Interpolation to Assimilate Surface Measurements and Satellite AOD for Ozone and PM2.5: A Case Study for July 2011. Journal of the Air & Waste Management Association (1995). PMID 26091206 DOI: 10.1080/10962247.2015.1062439  0.448
2015 Turner MD, Henze DK, Hakami A, Zhao S, Resler J, Carmichael GR, Stanier CO, Baek J, Sandu A, Russell AG, Nenes A, Jeong GR, Capps SL, Percell PB, Pinder RW, ... ... Chai T, et al. Differences between magnitudes and health impacts of BC emissions across the United States using 12 km scale seasonal source apportionment. Environmental Science & Technology. 49: 4362-71. PMID 25729920 DOI: 10.1021/Es505968B  0.388
2015 Stein AF, Ngan F, Draxler RR, Chai T. Potential use of transport and dispersion model ensembles for forecasting applications Weather and Forecasting. 30: 639-655. DOI: 10.1175/Waf-D-14-00153.1  0.395
2015 Turner MD, Henze DK, Capps SL, Hakami A, Zhao S, Resler J, Carmichael GR, Stanier CO, Baek J, Sandu A, Russell AG, Nenes A, Pinder RW, Napelenok SL, Bash JO, ... ... Chai T, et al. Premature deaths attributed to source-specific BC emissions in six urban US regions Environmental Research Letters. 10. DOI: 10.1088/1748-9326/10/11/114014  0.376
2015 Chai T, Draxler R, Stein A. Source term estimation using air concentration measurements and a Lagrangian dispersion model - Experiments with pseudo and real cesium-137 observations from the Fukushima nuclear accident Atmospheric Environment. 106: 241-251. DOI: 10.1016/J.Atmosenv.2015.01.070  0.409
2015 Tong DQ, Lamsal L, Pan L, Ding C, Kim H, Lee P, Chai T, Pickering KE, Stajner I. Long-term NOx trends over large cities in the United States during the great recession: Comparison of satellite retrievals, ground observations, and emission inventories Atmospheric Environment. 107: 70-84. DOI: 10.1016/J.Atmosenv.2015.01.035  0.408
2015 Huang M, Bowman KW, Carmichael GR, Lee M, Chai T, Spak SN, Henze DK, Darmenov AS, Da Silva AM. Improved western U.S. Background ozone estimates via constraining nonlocal and local source contributions using Aura TES and OMI observations Journal of Geophysical Research D: Atmospheres. 120: 3572-3592. DOI: 10.1002/2014Jd022993  0.397
2014 Chai T, Draxler RR. Root mean square error (RMSE) or mean absolute error (MAE)? – Arguments against avoiding RMSE in the literature Geoscientific Model Development. 7: 1247-1250. DOI: 10.5194/Gmd-7-1247-2014  0.314
2014 Pan L, Tong D, Lee P, Kim H-, Chai T. Assessment of NOx and O3 forecasting performances in the U.S. National Air Quality Forecasting Capability before and after the 2012 major emissions updates Atmospheric Environment. 95: 610-619. DOI: 10.1016/J.Atmosenv.2014.06.020  0.398
2014 Huang M, Bowman KW, Carmichael GR, Chai T, Pierce RB, Worden JR, Luo M, Pollack IB, Ryerson TB, Nowak JB, Neuman JA, Roberts JM, Atlas EL, Blake DR. Changes in nitrogen oxides emissions in California during 2005-2010 indicated from top-down and bottom-up emission estimates Journal of Geophysical Research D: Atmospheres. 119: 12928-12952. DOI: 10.1002/2014Jd022268  0.44
2013 Chai T, Kim H-, Lee P, Tong D, Pan L, Tang Y, Huang J, McQueen J, Tsidulko M, Stajner I. Evaluation of the United States National Air Quality Forecast Capability experimental real-time predictions in 2010 using Air Quality System ozone and NO 2 measurements Geoscientific Model Development. 6: 1831-1850. DOI: 10.5194/Gmd-6-1831-2013  0.41
2013 Huang M, Carmichael GR, Chai T, Pierce RB, Oltmans SJ, Jaffe DA, Bowman KW, Kaduwela A, Cai C, Spak SN, Weinheimer AJ, Huey LG, Diskin GS. Impacts of transported background pollutants on summertime western US air quality: Model evaluation, sensitivity analysis and data assimilation Atmospheric Chemistry and Physics. 13: 359-391. DOI: 10.5194/Acp-13-359-2013  0.369
2011 Sandu A, Chai T. Chemical Data Assimilation—An Overview Atmosphere. 2: 426-463. DOI: 10.3390/Atmos2030426  0.414
2011 Sandu A, Constantinescu E, Carmichael G, Chai T, Daescu D, Seinfeld J. Ensemble methods for dynamic data assimilation of chemical observations in atmospheric models Journal of Algorithms and Computational Technology. 5: 667-692. DOI: 10.1260/1748-3018.5.4.667  0.41
2009 Chai T, Carmichael GR, Tang Y, Sandu A, Heckel A, Richter A, Burrows JP. Regional NOx emission inversion through a four-dimensional variational approach using SCIAMACHY tropospheric NO2 column observations Atmospheric Environment. 43: 5046-5055. DOI: 10.1016/J.Atmosenv.2009.06.052  0.391
2008 Campbell JE, Carmichael GR, Chai T, Mena-Carrasco M, Tang Y, Blake DR, Blake NJ, Vay SA, Collatz GJ, Baker I, Berry JA, Montzka SA, Sweeney C, Schnoor JL, Stanier CO. Photosynthetic control of atmospheric carbonyl sulfide during the growing season. Science (New York, N.Y.). 322: 1085-8. PMID 19008442 DOI: 10.1126/Science.1164015  0.341
2008 Carmichael GR, Sandu A, Chai T, Daescu DN, Constantinescu EM, Tang Y. Predicting air quality: Improvements through advanced methods to integrate models and measurements Journal of Computational Physics. 227: 3540-3571. DOI: 10.1016/J.Jcp.2007.02.024  0.401
2008 Adhikary B, Kulkarni S, Dallura A, Tang Y, Chai T, Leung L, Qian Y, Chung C, Ramanathan V, Carmichael G. A regional scale chemical transport modeling of Asian aerosols with data assimilation of AOD observations using optimal interpolation technique Atmospheric Environment. 42: 8600-8615. DOI: 10.1016/J.Atmosenv.2008.08.031  0.423
2008 Zhang L, Constantinescu EM, Sandu A, Tang Y, Chai T, Carmichael GR, Byun D, Olaguer E. An adjoint sensitivity analysis and 4D-Var data assimilation study of Texas air quality Atmospheric Environment. 42: 5787-5804. DOI: 10.1016/J.Atmosenv.2008.03.048  0.452
2007 Campbell JE, Carmichael GR, Tang Y, Chai T, Vay SA, Choi YH, Sachse GW, Singh HB, Schnoor JL, Woo J, Vukovich JM, Streets DG, Huey LG, Stanier CO. Analysis of anthropogenic CO2 signal in ICARTT using a regional chemical transport model and observed tracers Tellus, Series B: Chemical and Physical Meteorology. 59: 199-210. DOI: 10.1111/J.1600-0889.2006.00239.X  0.358
2007 Constantinescu EM, Chai T, Sandu A, Carmichael GR. Autoregressive models of background errors for chemical data assimilation Journal of Geophysical Research. 112. DOI: 10.1029/2006Jd008103  0.394
2007 Chai T, Carmichael GR, Tang Y, Sandu A, Hardesty M, Pilewskie P, Whitlow S, Browell EV, Avery MA, Nédélec P, Merrill JT, Thompson AM, Williams E. Four-dimensional data assimilation experiments with International Consortium for Atmospheric Research on Transport and Transformation ozone measurements Journal of Geophysical Research Atmospheres. 112. DOI: 10.1029/2006Jd007763  0.46
2007 Mena-Carrasco M, Tang Y, Carmichael GR, Chai T, Thongbongchoo N, Campbell JE, Kulkarni S, Horowitz L, Vukovich J, Avery M, Brune W, Dibb JE, Emmons L, Flocke F, Sachse GW, et al. Improving regional ozone modeling through systematic evaluation of errors using the aircraft observations during the International Consortium for Atmospheric Research on Transport and Transformation Journal of Geophysical Research Atmospheres. 112. DOI: 10.1029/2006Jd007762  0.465
2007 Tang Y, Carmichael GR, Thongboonchoo N, Chai T, Horowitz LW, Pierce RB, Al-Saadi JA, Pfister G, Vukovich JM, Avery MA, Sachse GW, Ryerson TB, Holloway JS, Atlas EL, Flocke FM, et al. Influence of lateral and top boundary conditions on regional air quality prediction: A multiscale study coupling regional and global chemical transport models Journal of Geophysical Research Atmospheres. 112. DOI: 10.1029/2006Jd007515  0.413
2007 Pan L, Chai T, Carmichael GR, Tang Y, Streets D, Woo J, Friedli HR, Radke LF. Top-down estimate of mercury emissions in China using four-dimensional variational data assimilation Atmospheric Environment. 41: 2804-2819. DOI: 10.1016/J.Atmosenv.2006.11.048  0.412
2007 Constantinescu EM, Sandu A, Chai T, Carmichael GR. Assessment of ensemble-based chemical data assimilation in an idealized setting Atmospheric Environment. 41: 18-36. DOI: 10.1016/J.Atmosenv.2006.08.006  0.397
2007 Constantinescu EM, Sandu A, Chai T, Carmichael GR. Ensemble‐based chemical data assimilation. II: Covariance localization Quarterly Journal of the Royal Meteorological Society. 133: 1245-1256. DOI: 10.1002/Qj.77  0.441
2007 Constantinescu EM, Sandu A, Chai T, Carmichael GR. Ensemble-based chemical data assimilation. I: General approach Quarterly Journal of the Royal Meteorological Society. 133: 1229-1243. DOI: 10.1002/Qj.76  0.401
2006 Hakami A, Seinfeld JH, Chai T, Tang Y, Carmichael GR, Sandu A. Adjoint sensitivity analysis of ozone nonattainment over the continental United States. Environmental Science & Technology. 40: 3855-64. PMID 16830553 DOI: 10.1021/Es052135G  0.426
2006 Liao W, Sandu A, Carmichael GR, Chai T. Singular Vector Analysis for Atmospheric Chemical Transport Models Monthly Weather Review. 134: 2443-2465. DOI: 10.1175/Mwr3158.1  0.37
2006 Chai T, Carmichael GR, Sandu A, Tang Y, Daescu DN. Chemical data assimilation of Transport and Chemical Evolution over the Pacific (TRACE-P) aircraft measurements Journal of Geophysical Research Atmospheres. 111. DOI: 10.1029/2005Jd005883  0.405
2005 Hakami A, Henze DK, Seinfeld JH, Chai T, Tang Y, Carmichael GR, Sandu A. Adjoint inverse modeling of black carbon during the Asian Pacific Regional Aerosol Characterization Experiment Journal of Geophysical Research D: Atmospheres. 110: 1-17. DOI: 10.1029/2004Jd005671  0.424
2005 Sandu A, Daescu DN, Carmichael GR, Chai T. Adjoint sensitivity analysis of regional air quality models Journal of Computational Physics. 204: 222-252. DOI: 10.1016/J.Jcp.2004.10.011  0.402
2004 Chai T, Lin C, Newsom RK. Retrieval of Microscale Flow Structures from High-Resolution Doppler Lidar Data Using an Adjoint Model Journal of the Atmospheric Sciences. 61: 1500-1520. DOI: 10.1175/1520-0469(2004)061<1500:Romfsf>2.0.Co;2  0.549
2003 Chai T, Lin C. Estimation of Turbulent Viscosity and Diffusivity in Adjoint Recovery of Atmospheric Boundary Layer Flow Structures Multiscale Modeling & Simulation. 1: 196-220. DOI: 10.1137/S1540345902411414  0.552
2002 Lin C, Chai T, Sun J. On the Smoothness Constraints for Four-Dimensional Data Assimilation Journal of Computational Physics. 181: 430-453. DOI: 10.1006/Jcph.2002.7136  0.516
2001 Lin C, Chai T, Sun J. Retrieval of Flow Structures in a Convective Boundary Layer Using an Adjoint Model: Identical Twin Experiments Journal of the Atmospheric Sciences. 58: 1767-1783. DOI: 10.1175/1520-0469(2001)058<1767:Rofsia>2.0.Co;2  0.576
Show low-probability matches.