John Knaff earned a B.S. in Meteorology (1989) from Texas A&M University, and a MS (1992) and PhD (1997) in Atmospheric Science from Colorado State University. He was briefly a post-doctoral Researcher in the Department of Atmospheric Science at Colorado State University (1997).Following that appointment, he was a post-doctoral Fellow at the Cooperative Institute for Research in the Atmosphere at Colorado State University (1997-1999) where he was also employed as a Research Scientist position (1999-2005). He joined NOAA in 2005 as a Meteorologist in the NESDIS Regional and Mesoscale Meteorology Branch located in Fort Collins, Colorado.
During his time as a student he studied and published on topics related to tropical climate variability including El Nino/Southern Oscillation, monsoons, tropical cyclones and large-scale Atlantic climatology. The focus of his more recent studies, including his postdoctoral work, has been on observational aspects of hurricane structure and intensity variations and prediction. Most recently has concentrated on forecast applications and the operational transition of these products to both the National Hurricane Center and the Joint Typhoon Warning Center. In 2004, he received the NOAA David Johnson Award for basic research for improving the understanding of tropical phenomenon and predicting tropical cyclone intensity, accompanied by exemplary transfer of the results into operational products.
Current research includes the utilization of satellite and other observations to improve scientific understanding, diagnosis and forecasting capabilities of tropical cyclone genesis and structure change, the development and documentation of operational tropical cyclone forecasting techniques, and the transfer of such techniques to the operational setting. Since 1991, he has published more than 25 articles on tropical cyclones, mesoscale meteorology and tropical climatology in the refereed literature.
Publications
Refereed Publications
Knaff, J.A. and R.M. Zehr, 2008: Reply. Weather and Forecasting, 23:4, 762-770. (cf of the Comment)
Knaff, J.A., T.A. Cram, A.B. Schumacher, J.P. Kossin, and M. DeMaria, 2008: Objective Identification of Annular Hurricanes. Wea. Forecasting, 17-28.
Sampson, C.R., J.L. Franklin, J.A. Knaff, and M. DeMaria, 2008: Experiments with a Simple Tropical Cyclone Intensity Consensus. Weather and Forecasting, 23, 304–312.
DeMaria, M., J.A. Knaff and C. R. Sampson, 2007: Evaluation of long-term trend in tropical cyclone intensity forecasts. Meteor. Atmos Phy., 97, 19-28.
Knaff, J. A., C. R. Sampson, M. DeMaria, T. P. Marchok, J. M. Gross, and C. J. McAdie, 2007: Statistical Tropical Cyclone Wind Radii Prediction Using Climatology and Persistence. Wea. Forecasting, 22:4, 781–791.
Knaff, J.A., and R.M. Zehr, 2007: Reexamination of Tropical Cyclone Pressure Wind Relationships. Wea Forecasting, 22:1, 71–88.
Kossin, J.P., J.A. Knaff, H.I. Berger, D.C. Herndon, T.A. Cram, C.S. Velden, R.J. Murnane, and J.D. Hawkins, 2007: Estimating hurricane wind structure in the absence of aircraft reconnaissance. Wea. Forecasting, 22:1, 89–101.
Sampson, C.R., J.A. Knaff and E M. Fukada, 2007: Operational Evaluation of a Selective Consensus in the Western North Pacific Basin. Wea. Forecasting, 22, 671-675.
Zehr, R.M., and J.A. Knaff, 2007: Atlantic major hurricanes, 1995-2005 – Characteristics based on best track, aircraft, and IR images. J. of Climate, 20, 5865-5888.
Bessho, K., M. DeMaria, J.A. Knaff, 2006: Tropical Cyclone Wind Retrievals from the Advanced Microwave Sounder Unit (AMSU): Application to Surface Wind Analysis. J. of Applied Meteorology. 45:3, 399 - 415.
Chen, S.S., J.A. Knaff, and F.D. Marks, Jr., 2006: Effects of Vertical Wind Shear and Storm Motion Tropical Cyclone Rainfall Asymmetries Deduced from TRMM. Monthly Weather Review. 3190-3208.
DeMaria, M,. J.A. Knaff, J. Kaplan. 2006: On the Decay of Tropical Cyclone Winds Crossing Narrow Landmasses. Journal of Applied Meteorology and Climatology. 45:3, 491–499.
Demuth, J., M. DeMaria, and J.A. Knaff, 2006: Improvement of Advanced Microwave Sounding Unit Tropical Cyclone Intensity and Size Estimation Algorithms, Journal of Applied Meteorology and Climatology, 45:11, 1573–1581.
Landsea, C.W., B.A. Harper, K. Hoarau, and J.A. Knaff, 2006: Can we detect trends in extreme tropical cyclones?. Science, 313, 452-454.
Lindsey, D.T., D.W. Hillger, L.D. Grasso, J.A. Knaff, and J.F. Dostalek, 2006: GOES Climatology and Analysis of Thunderstorms with Enhanced 3.9 µm Reflectivity. Mon. Wea. Rev., 134-9, 2342–2353.
Mueller, K.J., M. DeMaria, J.A. Knaff, T.H. Vonder Haar:, 2006: Objective Estimation of Tropical Cyclone Wind Structure from Infrared Satellite Data. Wea Forecasting, 21:6, 990–1005.
DeMaria, M., M. Mainelli, L.K. Shay, J.A. Knaff, J. Kaplan, 2005: Further Improvement to the Statistical Hurricane Intensity Prediction Scheme (SHIPS). Wea. and Forecasting, 20: 4, 531–543.
Ferraro, R.R., Pellegrino, M.Turk, Chen, Qui, R.J., R.J. Kuligowski, S.J. Kusselson, Irving, S.Q. Kidder, J.A. Knaff, 2005: The Tropical Rainfall Potential (TRaP) Technique. Part 2: Validation. Weather and Forecasting, 20:4, 465-475.
Kidder, S.Q., S.J. Kusselson, J.A. Knaff, R.R. Ferraro, R.J. Kuligowski, M. Turk, 2005: The Tropical Rainfall Potential (TRaP) Technique. Part 1: Description and Examples. Weather and Forecasting, 20:4, 456-464.
Knaff, J.A., C.R. Sampson, M. DeMaria, 2005: An operational statisical typhoon intensity prediction scheme for the Western North Pacific. Weather and Forecasting, 20: 4, 688–699.
Conference and Informal Publications
Hillger, D.W., T. Schmit, D.T. Lindsey, J.A. Knaff, J. Daniels, 2007: An overview of GOES-13 science test. 3rd Symposium on Future National Operational Environmental Satellites, 14-18 January 2007, San Antonio, TX.
Landsea C.W., B.A. Harper, K. Hoarau, and J.A. Knaff, 2007: Can we detect climate trends in extreme tropical cyclones?, AMS Forum: Climate Change Manifested by Changes in Weather, 14-18 January, San Antonio, TX.
Cram, T., J.A. Knaff, and M. DeMaria, 2006: Objective Identification of Annular Hurricanes Using GOES and Reanalysis Data. AMS 27th Conference on Hurricanes and Tropical Meteorology. 24-28 April, Monterey, CA.
DeMaria, M., K.S. Maclay, and J.A. Knaff, 2006: Tropical cyclone structure analysis: a multi-sensor approach. AGU Fall Meeting, 11–15 December 2006, San Francisco, CA.
Knaff, J.A., and M. DeMaria, 2006: A Multi-platform Satellite Tropical Cyclone Wind Analysis System. AMS 14th Conference on Satellite Meteorology and Oceanography. 29 January-3 February, Atlanta, GA.
Knaff, J.A., and C. Sampson, 2006: Reanalysis of West Pacific tropical cyclone intensity 1966-1987. AMS 27th Conference on Hurricanes and Tropical Meteorology. 24-28 April, Monterey, CA.
Sampson, C.R., J.A. Knaff, and M. DeMaria , 2006: A statistical intensity model consensus for the Joint Typhoon Warning Center. AMS 27th Conference on Hurricanes and Tropical Meteorology. 24-28 April, Monterey, CA.
DeMaria, M., J.A. Knaff, J. Demuth, R.M. Zehr, and J.F. Dostalek, 2005: CIRA contributions to the Joint Hurricane Testbed. CIRA Magazine, Spring, 5-7.
DeMaria, M., J.A. Knaff, K.J. Mueller, and R.M. Zehr, 2005: Improvements in Deterministic and Probabilistic Tropical Cyclone Wind Predictions: A Joint Hurricane Testbed Project Update. 59th Interdepartmental Hurricane Conference, 7-11 March, Jacksonville, FL.
Knaff, J.A., M. DeMaria R.M. Zehr, and K.J. Mueller, 2005: Development of a Multi-platform Satellite Tropical Cyclone Wind Analysis System. 59th Interdepartmental Hurricane Conference, 7-11 March, Jacksonville, FL.
Knaff, J.A., and C. Sampson, 2005: Development of STIPS for the Southern Hemisphere and Indian Ocean. 59th Interdepartmental Hurricane Conference, 7-11 March, Jacksonville, FL.
Mueller, K.J., R.M. Zehr, M. DeMaria, and J.A. Knaff, 2005: Objective Estimation of Tropical Cyclone Wind Structure From Infrared Satellite Data. 59th Interdepartmental Hurricane Conference, 7-11 March, Jacksonville, FL.
Zehr, R.M., M. DeMaria, J.A. Knaff, and K.J. Mueller, 2005: NOAA’s Next-Generation Polar and Geostationary Satellites – Hurricane Applications. 59th Interdepartmental Hurricane Conference, 7-11 March, Jacksonville, FL.
Bessho, K. M. DeMaria, J.A. Knaff, and J. Demuth, 2004: Tropical Cyclone Wind Retrievals from the Advanced Microwave Sounding Unit (AMSU): Application to Surface Wind Analysis. AMS 26th Conference on Hurricanes and Tropical Meteorology. 3-7 May, Miami, FL.
Cecil, D., T.A. Jones, J.A. Knaff, and M. DeMaria, 2004: Statistical forecasting of Pacific and Indian Ocean tropical cyclone intensity using 19-, 37-, and 85- GHz brightness temperatures. AMS 26th Conference on Hurricanes and Tropical Meteorology. 3-7 May, Miami, FL.
DeMaria, M., C.W. Anderson, J.A. Knaff, and B.H. Connell, 2004: A New Product for Estimating the Probability of Tropical Cyclone Formation. AMS 26th Conference on Hurricanes and Tropical Meteorology. 3-7 May, Miami, FL.
DeMaria, M., D.W. Hillger, J.F.W. Purdom, R.M. Zehr, H. Gosden, D.L. Watson, J.A. Knaff, D.L. Lindsey, D.E. Bikos, 2004: Advance Mesoscale Product Development for GOES-R Using Operational and Experimental Satellite Observations. 3rd GOES Users Conference. 10-13 May, Broomfield, CO.
Gross, J.M., M. DeMaria, J.A. Knaff, and C.R. Sampson, 2004: A New Method for Determining Tropical Cyclone Wind Forecast Probabilities. AMS 26th Conference on Hurricanes and Tropical Meteorology. 3-7 May, Miami, FL.
Knaff, J.A., C.R. Sampson, and M. DeMaria, 2004: An introduction to the statistical typhoon intensity prediction scheme (STIPS). AMS 26th Conference on Hurricanes and Tropical Meteorology. 3-7 May, Miami, FL.
DeMaria, M., M. Mainelli, L.K. Shay, J.A. Knaff, and J.P. Kossin, 2003: Improvements in Real-Time Statistical Tropical Cyclone Intensity Forecasts Using Satellite Data. 12th Conference on Satellite Meteorology and Oceanography, 10-14 February, Long Beach, CA, Amer. Meteor. Soc., CD-ROM, JP1.4.
Knaff, J.A., N. Wang, M. DeMaria, R.M. Zehr, 2003: Transmission of current GOES imagery aboard the NOAA WP-3 aircraft using wavelet compression techniques. CIRA Magazine, 15-17.
Knaff, J.A., N. Wang, R.M. Zehr, M. DeMaria, J.S. Griffin, and F.D. Marks, 2003: A demonstration of real-time transmission and display of GOES imagery aboard the NOAA P-3 aircraft during the 2002 hurricane season. 12th Conference on Satellite Meteorology and Oceanography, 10-14 February, Long Beach, CA, Amer. Meteor. Soc., CD-ROM, JP1.5.
Reasor, P.D., M.T. Montgomery, F.D. Marks, L.F. Bosart, J.F. Gamache, and J.A. Knaff, 2003: Diagnosing the Role of Convective Hot Towers in Tropical Cyclogenesis Using Airborne Doppler-derived Winds. Simpson Symposium, 10-14 February, Long Beach, CA, Amer. Meteor. Soc.
DeMaria, M., R.M. Zehr, J.P. Kossin, and J.A. Knaff, 2002: The Use of GOES Imagery in Statistical Hurricane Intensity Prediction, 25th Conf. on Hurricanes and Tropical Meteorology, 29 April-3 May, San Diego, CA, Amer. Meteor. Soc., 120-121.
Demuth, J.L., M. DeMaria, J.A. Knaff, C. Velden, and K. Brueske, 2002: An Evaluation of CIMSS and CIRA AMSU Tropical Cyclone Intensity Estimation Algorithms. 25th Conf. on Hurricanes and Tropical Meteorology, 29 April-3 May, San Diego, CA, Amer. Meteor. Soc., 27-28.
Knaff, J.A., J.P. Kossin, and M. DeMaria, 2002: What are Annular Hurricanes? 25th Conf. on Hurricanes and Tropical Meteorology, 29 April-3 May, San Diego, CA, Amer. Meteor. Soc., 609-610.
Knaff, J.A., and C.S. Velden, 2002: Examining the Eight-Day Evolution of Upper Level Winds in Hurricane Floyd. 25th Conf. on Hurricanes and Tropical Meteorology, 29 April-3 May, San Diego, CA, Amer. Meteor. Soc., 37-38.
Landsea, C.W., and J.A. Knaff, 2002: How much "skill" was there in forecasting the strong 1997-98 El Nino and 1998-2001 La Nina events? 25th Conf. on Hurricanes and Tropical Meteorology, 29 April-3 May, San Diego, CA, Amer. Meteor. Soc.
DeMaria, M., J. Demuth, and J.A. Knaff, 2001: Validation of an Advanced Microwave Sounder Unit (AMSU) tropical cyclone intensity and size estimation algorithm. 11th Conf. on Satellite Meteorology and Oceanography, 15-18 October, Madison, WI, Amer. Meteor. Soc., 300-303.
Kidder, S.Q., J.A. Knaff, and S.J. Kusselson, 2001: Using AMSU data to forecast precipitation from landfalling hurricanes. Symposium on Precipitation of Extremes: Prediction, Impacts, and Responses,14-19 January, Albuquerque, NM, Amer. Meteor. Soc., 344-346.
Kidder, S.Q., S.J. Kusselson, J.A. Knaff, and R.J. Kuligowski, 2001: Improvements to the experimental tropical rainfall potential (TraP) technique. 11th Conf. on Satellite Meteorology and Oceanography, 15-18 October, Madison, WI, Amer. Meteor. Soc., 375-378.
Knaff, J.A., and C.W. Landsea, 2001: Application of the El Nino--southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 10:2, 31-34.
Knaff, J.A., and C.W. Landsea, 2001: Application of the El Ni?o--Southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 10:3, 40-42.
Landsea, C.W., and J.A. Knaff, 2001: Application of the El Nino--southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 10:1, 31-33.
Landsea, C.W., and J.A. Knaff , 2001: Application of the El Ni?o--Southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 10:4, 41-43.
Weaver, J.F., J.A. Knaff, J.M. Daniels, and G.S. Wade, 2001: Observations of a severe supercell thunderstorm on 24 July using GOES-11 sounder and imagery. 11th Conf. on Satellite Meteorology and Oceanography, 15-18 October, Madison, WI, Amer. Meteor. Soc., 397-401.
DeMaria, M., J.A. Knaff, S.Q. Kidder, and M.D. Goldberg, 2000: Tropical cyclone wind retrievals using AMSU-A data from NOAA-15. 10th Conf. on Satellite Meteorology and Oceanography. 14-18 January, Long Beach, CA, Amer. Meteor. Soc., 149-152.
Demuth, J.L., M. DeMaria, J.A. Knaff, and T.H. Vonder Haar, 2000: An objective method for estimating tropical cyclone intensity and structure from NOAA-15 Advanced Microwave Sounding Unit (AMSU) data. 24th Conf. on Hurricanes and Tropical Meteorology. 29 May - 2 June, Fort Lauderdale, FL, Amer. Meteor. Soc., 484-485.
Knaff, J.A., and C.W. Landsea, 2000: Application of the El Nino--southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 9:4, 48-50.
Knaff, J.A., and C.W. Landsea, 2000: Application of the El Nino--southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 9, 3, 37-39.
Knaff, J.A., and C.S. Velden, 2000: Relationships between the multi-layered wind field and the intensity of Hurricane Floyd. 24th Conf. on Hurricanes and Tropical Meteorology. 29 May - 2 June, Fort Lauderdale, FL, Amer. Meteor. Soc., 492-493.
Landsea, C.W., and Knaff, J.A., 2000: Application of the El Nino--southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 9:2, 31-33.
Landsea, C.W., and Knaff, J.A., 2000: Application of the El Nino--southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 9:1, 32-34.
Landsea C.W., and J.A. Knaff, 2000: How much "skill" is there in forecasting El Nino?, WeatherZine, 23, 2-4.
Landsea, C.W., and J.A. Knaff, 2000: How much "skill" was there in forecasting the strong 1997-98 El Nino and 1998-2000 La Nina events? 24th Conf. on Hurricanes and Tropical Meteorology. 29 May - 2 June, Fort Lauderdale, FL, Amer. Meteor. Soc., J46.
Knaff, J.A., 1999: Convective asymmetries in mature tropical cyclones associated with motion and vertical wind shear. 23rd Conf. on Hurricanes and Tropical Meteorology, Dallas, TX, 10-15 January 1999, 464-467.
Knaff, J.A., 1999: Tropical cyclone structure as revealed by one-minute satellite imagery. 23rd Conf. on Hurricanes and Tropical Meteorology. 10-15 January, Dallas, TX, Amer. Meteor. Soc., 186-189.
Knaff, J.A., C.W. Landsea, 1999: Application of the El Ni?o--Southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 8:1, 29-31.
Knaff, J.A., C.W. Landsea, 1999: Application of the El Ni?o--Southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 8:3, 36-38.
Knaff, J.A., and R.M. Zehr, 1999: Convective asymmetries in mature tropical cyclones associated with motion and vertical wind shear. 23rd AMS Conf. on Hurricanes and Tropical Meteorology. 10-15 January, Amer. Meteor. Soc., 464-467.
Landsea, C.W., and J.A. Knaff, 1999: Application of the El Ni?o--Southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 8:2, 39-40.
Landsea, C.W., and J.A. Knaff, 1999: Application of the El Ni?o--Southern Oscillation CLImatology and PERsistence (CLIPER) Forecasting Scheme. Experimental Long--Lead Forecast Bulletin, 8:4, 34-36.
Knaff, J.A., 1997: Atlantic summertime sea level pressure anomalies and their relationship to seasonal hurricane activity. 22th Conference on Hurricanes and Tropical Meteorology. 19-23 May, Ft. Collins, CO, Amer. Meteor. Soc., 276-277.
Presentations
DeMaria, M., S. Kidder, P. Harr, J. Knaff, Chris Lauer, 2008: An improved wind probability program: A Joint Testbed Project update. 62nd Interdepartmental Hurricane Conference, 3-7 March, Charleston, SC.
Knaff, J.A., A. Krautkramer, M. DeMaria, A.B. Schumacher, 2008: New and updated operational tropical cyclone wind products. 62nd Interdepartmental Hurricane Conference, 3-7 March, Charleston, SC.
Schumacher, A.B., M. DeMaria, J.A. Knaff, D.P. Brown, 2008: The NESDIS tropical cyclone formation probability product: An overview of past performance and future plans. 62nd Interdepartmental Hurricane Conference, 3-7 March, Charleston, SC.
DeMaria, M., J.A. Knaff, and J. Kaplan, 2007: Improved Statistical Intensity Forecast Models: A Joint Hurricane Testbed Project Year 2 Progress Report. 61st Interdepartmental Hurricane Conference, 5-9 March, New Orleans, LA.
Knaff, J.A., 2007: Introducing the CIRA/NESDIS – Regional and Mesoscale Meteorology Branch Tropical Cyclone Web Page. 61st Interdepartmental Hurricane Conference, 5-9 March, New Orleans, LA.
Knaff, J.A., M. DeMaria, and C. Lauer, 2007: Verification of the Monte Carlo Tropical Cyclone Wind Speed Probabilities: A Joint Hurricane Testbed Project Update. 61st Interdepartmental Hurricane Conference, 5-9 March 2007, New Orleans, LA.
Knaff, J.A., and M. DeMaria, A. Krautkramer, B. Sampson, and G. Goni, 2007: Introducing the CIRA/NESDIS – Regional and Mesoscale Meteorology Branch Tropical Cyclone Web Page. 61st Interdepartmental Hurricane Conference, 5-9 March, New Orleans, LA.
Schumacher, A.B., M. DeMaria, J.A. Knaff, A. Irving, N. Merckle, 2007: A New Tropical Cyclone Formation Product: Operational Implementation for the Atlantic and Eastern Pacific in 2006 and Extension to the Western N. Pacific in 2007. 61st Interdepartmental Hurricane Conference, 5-9 March, New Orleans, LA. .
Schumacher, A.B., J.A. Knaff, T. Cram, M. DeMaria, J. Kossin, 2007: Operational implementation of an objective annual hurricane index. 61st Interdepartmental Hurricane Conference, 5-9 March 2007, New Orleans, LA.
Knaff, J.A., 2004: Overview of recent operational tropical cyclone forecasting tools developed at CIRA. Joint Typhoon Warning Center, 16 August, Honolulu, HI.
Knaff, J.A., and M. DeMaria, 2004: Development of a Rapid Intensification Index for the Eastern Pacific Basin. 58th Interdepartmental Hurricane Conference, 1-5 March, Charleston, SC.
Herndon, D., C. Velden, J.A. Knaff, K. Brueske, M. DeMaria, 2003: Evaluation of real-time tropical cyclone intensity estimates from AMSU observations. 57th Interdepartmental Hurricane Conference, 10-15 March, Miami, FL
Knaff, J.A., 2003: Description of the statistical typhoon intensity prediction scheme, Naval Postgraduate School, 11 August, Monterey, CA.
Knaff, J.A., 2003: Research to better diagnos and predict tropical cyclone structure and intensity change, Naval Postgraduate School, 11 August, Monterey, CA
Knaff, J.A., M. DeMaria, C.R. Sampson, J.L. Demuth, 2003: Recently developed operational and experimental tropical cyclone intensity and structure guidance for the Western North Pacific. 57th Interdepartmental Hurricane Conference, 10-15 March, Miami, FL
Zehr, R.M., M. DeMaria, J.A. Knaff, K. Mueller, K. Bessho, 2003: Tropical cyclone surface wind analysis using satellite data: Dvorak, microwave, scatterometer, and cloud motion winds. 57th Interdepartmental Hurricane Conference, 10-15 March, Miami, FL
Knaff, J.A., 2002: AMSU-based tropical cyclone intensity and structure estimates from CIRA/NESDIS. Presentation during the AMSU Workshop at the WMO International Workshop on Tropical Cyclones. 5 December, Cairns, Australia.
Knaff, J.A., and M. DeMaria, 2002: Current and future tropical cyclone projects at CIRA/NESDIS: An update and outlook. Presented at the National Hurricane Center, 17 October, Miami, FL
Knaff, J.A., and M. DeMaria, 2002: Statistical Typhoon Intensity Prediction Scheme. Training
presentation give at the Joint Typhoon Warning Center, 24 May, Honolulu, HI.
Knaff, J.A., M. DeMaria, and J. Demuth, 2002: Tropical cyclone forecast products derived from the
Advanced microwave sounding unit. Training presentation give at the Joint Typhoon Warning Center, 24 May, Honolulu, HI.
Knaff, J.A., M. DeMaria, C.R. Sampson, and J. M. Gross, 2002: New Operational Tools to Produce Five-day Tropical Cyclone Intensity Forecasts. 56th Interdepartmental Hurricane Conf., 11-15 March, New Orleans, LA.
DeMaria, M., R.M. Zehr, C.S. Velden, J.A. Knaff, J.L. Demuth, and K.F. Brueske, 2002: An Update on Joint Hurricane Testbed (JHT) Projects at CIRA and CIMSS, 56th Interdepartmental Hurricane Conf., 11-15 March, New Orleans, LA.
Chase, T.N., J.A. Knaff, and R.A. Pielke, 2001: Trends in global monsoon circulations: Evidence for a diminished hydrological cycle? 12th Symposium on Global Change Studies and Climate Variations - 81st Annual AMS Meeting, 14-19 January, Albuquerque, NM, Amer. Meteor. Soc.
DeMaria, M., C. S. Velden, J.L. Demuth, J.A. Knaff, S. Q. Kidder, and K. Brueske, 2001: An overview
of tropical cyclone applications of advanced microwave sounder unit (AMSU) data. 55th Interdepartmental Hurricane Conf., 5-9 March, Orlando, FL, b-119 - b-123.
Knaff J.A., J. P. Kossin, M. DeMaria, and V. E. Larson, 2001, A discussion of intensities associated with doughnut hurricanes, 55th Interdepartmental Hurricane Conf., 5-9 March, Orlando, FL.
Landsea, C.W., and J.A. Knaff, 2001: How much "skill" was there in forecasting the strong 1997-98 El Nino and 1998-2000 La Nina events? Climate Variability, the Ocean, and Societal Impacts - 81st Annual AMS Meeting, 14-19 January, Albuquerque, NM, Amer. Meteor. Soc.
DeMaria, M., B.H. Connell, J.A. Knaff, and R.M. Zehr, 2000: Improvements in tropical cyclone genesis and intensity forecasts using GOES imager and sounder data. 54th Interdepartmental Hurricane Conf., 14-17 February, Houston, TX, NOAA/OFCM, A98-A103.
Dostalek, J.F., M. DeMaria, and J.A. Knaff, 2000: Advanced Microwave Sounding Unit (AMSU) analyses of marine extratropical cyclones. Northwest Weather Workgroup, 3-6 February, Seattle, WA.
Knaff, J.A. M. DeMaria, and J.L. Demuth, 2000: Tropical cyclone forecast products derived from the Advanced Microwave Sounding Unit. 54th Interdepartmental Hurricane Conf., 14-17 February, Houston, TX, NOAA/OFCM, A104-A109.
Knaff, J.A., 1999: Tropical cyclone structure as revealed by one-minute satellite imagery. 23rd Conf. on Hurricanes and Tropical Meteorology. January 12, Dallas, TX, Amer. Meteor. Soc., 186-189.
Knaff, J.A., 1999: How much "skill" did the various forecasting methods available have for the 1997 - 98 El Nino event? 23rd Conf. on Hurricanes and Tropical Meteorology. January 12, Dallas, TX.
Knaff, J.A., 1999: Convective asymmetries in mature tropical cyclones associated with motion and vertical wind shear. Poster session: 23rd Conf. on Hurricanes and Tropical Meteorology. January 12, Dallas, TX.
Landsea, C. W. and J. A. Knaff, 1999: How much "skill" did the various forecasting methods available have for the 1997 - 98 El Nino event? 2nd Hayes Symposium on Seasonal and Interannual Climate Change, January 10-5, Dallas, TX.
Zehr, R.M., M. DeMaria, F. Horsfall and J.A. Knaff, 1999: Observational tropical cyclone data archive and research. 53rd Interdepartmental Hurricane Conference, February 8-12, Biloxi, MS.