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Lucas Harris

Physical Scientist

Deputy Division Leader, Weather and Climate Dynamics Division

NOAA/Geophysical Fluid Dynamics Laboratory

My research is focused on the development of the algorithms and software within the GFDL Finite-Volume Cubed-Sphere Dynamical Core, FV3, and its applications in the GFDL Modeling Suite and specifically the System for High-resolution prediction on Earth-to-Local Domains (SHiELD). Global and variable-resolution forecasts from SHiELD are available in real-time. I also contribute to applications in other FV3-based modeling systems including the Unified Forecast System.

My personal expertise is on grid refinement techniques. The two methods for doing this in FV3 are grid nesting and grid stretching. These techniques allow FV3-powered models to be run at a very high resolution over a limited area convection-resolving forecasting, seasonal prediction, and regional climate modeling. Here is an introduction to variable-resolution techniques. Currently the FV3 Team is using grid nesting and grid stretching to develop global models suitable for storm-scale severe thunderstorm and hurricane forecasting, and for subseasonal prediction of severe weather, intense hurricanes, and the Madden-Julian Oscillation. An article and video about this work have been featured on the GFDL website.

I have also become more involved in the development of global storm resolving models (GSRMs). I led the development of the X-SHiELD GSRM which was contributed to DYAMOND. This development also supports our collaboration with Allen Institute for Artificial Intelligence (AI2) Climate Modeling, which is creating a ML-corrected FV3-based climate model. AI2 is also porting FV3 and the UFS physics packages into GT4py for performance-portability onto new computing architectures, especially GPUs.

Recent presentations:

Other projects and documents

I have written a simple but efficient and highly flexible feature tracker, primarily for tropical and extratropical cyclones. Email me if you would like further information.

I have a few nice GrADS scripts, along with examples, that I use for some of my work that others may find helpful.

Ray Pierrehumbert’s classic essay on mountain gravity-wave drag parameterization is difficult to find online. A copy is available at ECMWF. (Many other excellent ECMWF conference proceedings, including many classic contributions by GFDL scientists, are available as well.) A conference proceeding describing the use of the Pierrehumbert and Wyman scheme in the Miyakoda GFDL model, also hard to find, is available here.

My colleague Xi Chen and I have submitted a comment on an article about grid staggering.

Publications

  1. Bretherton, Christopher S., Brian Henn, Anna Kwa, Noah D Brenowitz, Oliver Watt-Meyer, Jeremy McGibbon, W Andre Perkins, Spencer K Clark, and Lucas Harris, February 2022: Correcting coarse-grid weather and climate models by machine learning from global storm-resolving simulations. Journal of Advances in Modeling Earth Systems, 14(2), doi:10.1029/2021MS002794.
    [ Abstract ]
  2. Cheng, Kai-Yuan, Lucas Harris, and Yongqiang Sun, February 2022: Enhancing the accessibility of unified modeling systems: GFDL System for High-resolution prediction on Earth-to-Local Domains (SHiELD) v2021b in a container. Geoscientific Model Development, 15(3), doi:10.5194/gmd-15-1097-20221097-1105.
    [ Abstract ]
  3. Gallo, Burkely T., Jamie K Wolff, Adam J Clark, Israel Jirak, Lindsay R Blank, Brett Roberts, Yunheng Wang, Chunxi Zhang, Ming Xue, Timothy A Supinie, Lucas Harris, Linjiong Zhou, and Curtis Alexander, February 2021: Exploring convection-allowing model evaluation strategies for severe local storms using the Finite-Volume Cubed-Sphere (FV3) Model Core. Weather and Forecasting, 36(1), doi:10.1175/WAF-D-20-0090.13-19.
    [ Abstract ]
  4. Gao, Kun, Lucas Harris, Linjiong Zhou, Morris A Bender, and Matthew J Morin, September 2021: On the sensitivity of hurricane intensity and structure to horizontal tracer advection schemes in FV3. Journal of the Atmospheric Sciences, 78(9), doi:10.1175/JAS-D-20-0331.13007-3021.
    [ Abstract ]
  5. Guo, Huan, Yi Ming, Songmiao Fan, Linjiong Zhou, Lucas Harris, and Ming Zhao, June 2021: Two-moment bulk cloud microphysics with prognostic precipitation in GFDL’s Atmosphere Model AM4.0: configuration and performance. Journal of Advances in Modeling Earth Systems, 13(6), doi:10.1029/2020MS002453.
    [ Abstract ]
  6. Harris, Lucas, Xi Chen, William M Putman, Linjiong Zhou, and Jan-Huey Chen, June 2021: A Scientific Description of the GFDL Finite-Volume Cubed-Sphere Dynamical Core, Princeton, NJ: NOAA Technical Memorandum OAR GFDL, 2021-001, doi:10.25923/6nhs-5897109pp.
  7. Harris, Lucas, July 2021: A new semi-Lagrangian finite volume advection scheme combines the best of both worlds. Advances in Atmospheric Sciences, 38, doi:10.1007/s00376-021-1181-01608-1609.
  8. Xiang, Baoqiang, Lucas Harris, Thomas L Delworth, Bin Wang, Guosen Chen, Jan-Huey Chen, Spencer K Clark, William F Cooke, Kun Gao, J Jacob Huff, Liwei Jia, Nathaniel C Johnson, Sarah B Kapnick, Feiyu Lu, Colleen McHugh, Yongqiang Sun, Mingjing Tong, Xiaosong Yang, Fanrong Zeng, Ming Zhao, Linjiong Zhou, and Xiaqiong Zhou, September 2021: S2S prediction in GFDL SPEAR: MJO diversity and teleconnections. Bulletin of the American Meteorological Society, doi:10.1175/BAMS-D-21-0124.1.
    [ Abstract ]
  9. Delworth, Thomas L., William F Cooke, Alistair Adcroft, Mitchell Bushuk, Jan-Huey Chen, Krista A Dunne, Paul Ginoux, Richard G Gudgel, Robert Hallberg, Lucas Harris, Matthew J Harrison, Nathaniel C Johnson, Sarah B Kapnick, Shian-Jiann Lin, Feiyu Lu, Sergey Malyshev, P C D Milly, Hiroyuki Murakami, Vaishali Naik, Salvatore Pascale, David J Paynter, Anthony Rosati, M Daniel Schwarzkopf, Elena Shevliakova, Seth D Underwood, Andrew T Wittenberg, Baoqiang Xiang, Xiaosong Yang, Fanrong Zeng, Honghai Zhang, Liping Zhang, and Ming Zhao, March 2020: SPEAR – the next generation GFDL modeling system for seasonal to multidecadal prediction and projection. Journal of Advances in Modeling Earth Systems, 12(3), doi:10.1029/2019MS001895.
    [ Abstract ]
  10. Harris, Lucas, Linjiong Zhou, Xi Chen, and Jan-Huey Chen, January 2020: The GFDL Finite-Volume Cubed-Sphere Dynamical Core: Release 201912, Princeton, NJ: NOAA Technical Memorandum OAR GFDL, 2020-001, doi:10.25923/7h88-c53410pp.
    [ Abstract ]
  11. Harris, Lucas, Linjiong Zhou, Shian-Jiann Lin, Jan-Huey Chen, Xi Chen, Kun Gao, Matthew J Morin, Shannon L Rees, Yongqiang Sun, Mingjing Tong, Baoqiang Xiang, Morris A Bender, Rusty Benson, Kai-Yuan Cheng, Spencer K Clark, Oliver Elbert, Andrew T Hazelton, J Jacob Huff, Alex Kaltenbaugh, Zhi Liang, Timothy Marchok, Hyeyum Hailey Shin, and William F Stern, October 2020: GFDL SHiELD: A Unified System for Weather-to-Seasonal Prediction. Journal of Advances in Modeling Earth Systems, 12(10), doi:10.1029/2020MS002223.
    [ Abstract ]
  12. Harris, Lucas, Xi Chen, Linjiong Zhou, and Jan-Huey Chen, December 2020: The Nonhydrostatic Solver of the GFDL Finite-Volume Cubed-Sphere Dynamical Core, Princeton, NJ: NOAA Technical Memorandum OAR GFDL, 2020-003, doi:10.25923/9wdt-48956pp.
    [ Abstract ]
  13. Chen, Jan-Huey, Shian-Jiann Lin, L Magnusson, Morris A Bender, Xi Chen, Linjiong Zhou, Baoqiang Xiang, Shannon L Rees, Matthew J Morin, and Lucas Harris, April 2019: Advancements in Hurricane Prediction with NOAA's Next Generation Forecast System. Geophysical Research Letters, 46(8), doi:10.1029/2019GL082410.
    [ Abstract ]
  14. Gao, Kun, Lucas Harris, Jan-Huey Chen, Shian-Jiann Lin, and Andrew T Hazelton, January 2019: Improving AGCM Hurricane Structure With Two‐Way Nesting. Journal of Advances in Modeling Earth Systems, 11(1), doi:10.1029/2018MS001359.
    [ Abstract ]
  15. Gao, Kun, Jan-Huey Chen, Lucas Harris, Yongqiang Sun, and Shian-Jiann Lin, August 2019: Skillful Prediction of Monthly Major Hurricane Activity in the North Atlantic with Two‐way Nesting. Geophysical Research Letters, 46(15), doi:10.1029/2019GL083526.
    [ Abstract ]
  16. Harris, Lucas, Shannon L Rees, Matthew J Morin, Linjiong Zhou, and William F Stern, June 2019: Explicit prediction of continental convection in a skillful variable‐resolution global model. Journal of Advances in Modeling Earth Systems, 11(6), doi:10.1029/2018MS001542.
    [ Abstract ]
  17. Held, Isaac M., Huan Guo, Alistair Adcroft, John P Dunne, Larry W Horowitz, John P Krasting, Elena Shevliakova, Michael Winton, Ming Zhao, Mitchell Bushuk, Andrew T Wittenberg, Bruce Wyman, Baoqiang Xiang, Rong Zhang, Whit G Anderson, V Balaji, Leo J Donner, Krista A Dunne, Jeffrey W Durachta, Paul P G Gauthier, Paul Ginoux, Jean-Christophe Golaz, Stephen M Griffies, Robert Hallberg, Lucas Harris, Matthew J Harrison, William J Hurlin, Jasmin G John, Pu Lin, Shian-Jiann Lin, Sergey Malyshev, Raymond Menzel, P C D Milly, Yi Ming, Vaishali Naik, David J Paynter, Fabien Paulot, V Ramaswamy, Brandon G Reichl, Thomas E Robinson, Anthony Rosati, Charles J Seman, Levi G Silvers, Seth D Underwood, and Niki Zadeh, November 2019: Structure and Performance of GFDL's CM4.0 Climate Model. Journal of Advances in Modeling Earth Systems, 11(11), doi:10.1029/2019MS001829.
    [ Abstract ]
  18. Potvin, C K., J R Carley, Adam J Clark, L J Wicker, P S Skinner, A E Reinhart, Burkely T Gallo, J S Kain, G Romine, E Aligo, K Brewster, D C Dowell, and Lucas Harris, et al., October 2019: Systematic comparison of convection-allowing models during the 2017 NOAA HWT Spring Forecasting Experiment. Weather and Forecasting, 34(5), doi:10.1175/WAF-D-19-0056.1.
    [ Abstract ]
  19. Vecchi, Gabriel A., Thomas L Delworth, Hiroyuki Murakami, Seth D Underwood, Andrew T Wittenberg, Fanrong Zeng, Wei Zhang, Jane Baldwin, Kieran Bhatia, William F Cooke, Jie He, Sarah B Kapnick, Thomas R Knutson, Gabriele Villarini, Karin van der Wiel, Whit G Anderson, V Balaji, Jan-Huey Chen, Keith W Dixon, Richard G Gudgel, Lucas Harris, Liwei Jia, Nathaniel C Johnson, Shian-Jiann Lin, Maofeng Liu, Chin Ho Justin Ng, Anthony Rosati, J A Smith, and Xiaosong Yang, November 2019: Tropical cyclone sensitivities to CO2 doubling: roles of atmospheric resolution, synoptic variability and background climate changes. Climate Dynamics, 53(9-10), doi:10.1007/s00382-019-04913-y.
    [ Abstract ]
  20. Zarzycki, C M., C Jablonowski, J Kent, P H Lauritzen, R Nair, Kevin A Reed, P A Ullrich, D M Hall, D Dazlich, R Heikes, C Konor, David A Randall, Xi Chen, and Lucas Harris, et al., March 2019: DCMIP2016: the splitting supercell test case. Geoscientific Model Development, 12(3), doi:10.5194/gmd-12-879-2019.
    [ Abstract ]
  21. Zhang, F, M Minamide, R G Nystrom, X Chen, Shian-Jiann Lin, and Lucas Harris, July 2019: Improving Harvey forecasts with next-generation weather satellites. Bulletin of the American Meteorological Society, 100(7), doi:10.1175/BAMS-D-18-0149.1.
    [ Abstract ]
  22. Zhang, C, Ming Xue, Timothy A Supinie, F Kong, N Snook, K W Thomas, K Brewster, Y Jung, Lucas Harris, and Shian-Jiann Lin, March 2019: How Well Does an FV3-based Model Predict Precipitation at a Convection-Allowing Resolution? Results from CAPS Forecasts for the 2018 NOAA Hazardous Weather Testbed with Different Physics Combinations. Geophysical Research Letters, 46(6), doi:10.1029/2018GL081702.
    [ Abstract ]
  23. Zhou, Linjiong, Shian-Jiann Lin, Jan-Huey Chen, Lucas Harris, Xi Chen, and Shannon L Rees, July 2019: Toward Convective-Scale Prediction within the Next Generation Global Prediction System. Bulletin of the American Meteorological Society, 100(7), doi:10.1175/BAMS-D-17-0246.1.
    [ Abstract ]
  24. Anber, Usama, Nadir Jeevanjee, Lucas Harris, and Isaac M Held, July 2018: Sensitivity of Radiative‐Convection Equilibrium to Divergence Damping in GFDL‐FV3 Based Cloud‐Resolving Model Simulations. Journal of Advances in Modeling Earth Systems, 10(7), doi:10.1029/2017MS001225.
    [ Abstract ]
  25. Chen, Xi, Shian-Jiann Lin, and Lucas Harris, September 2018: Towards an unstaggered finite‐volume dynamical core with a fast Riemann solver: 1D linearized analysis of dissipation, dispersion, and noise control. Journal of Advances in Modeling Earth Systems, 10(9), doi:10.1029/2018MS001361.
    [ Abstract ]
  26. Hazelton, Andrew T., Lucas Harris, and Shian-Jiann Lin, April 2018: Evaluation of Tropical Cyclone Structure Forecasts in a High-Resolution Version of the Multiscale GFDL fvGFS Model. Weather and Forecasting, 33(2), doi:10.1175/WAF-D-17-0140.1.
    [ Abstract ]
  27. Hazelton, Andrew T., Morris A Bender, Matthew J Morin, Lucas Harris, and Shian-Jiann Lin, October 2018: 2017 Atlantic Hurricane Forecasts From a High-Resolution Version of the GFDL fvGFS Model: Evaluation of Track, Intensity, and Structure. Weather and Forecasting, 33(5), doi:10.1175/WAF-D-18-0056.1.
    [ Abstract ]
  28. Zhao, Ming, Jean-Christophe Golaz, Isaac M Held, Huan Guo, V Balaji, Rusty Benson, Jan-Huey Chen, Xi Chen, Leo J Donner, John P Dunne, Krista A Dunne, Jeffrey W Durachta, Songmiao Fan, Stuart Freidenreich, Stephen T Garner, Paul Ginoux, Lucas Harris, Larry W Horowitz, John P Krasting, Amy R Langenhorst, Zhi Liang, Pu Lin, Shian-Jiann Lin, Sergey Malyshev, E Mason, P C D Milly, Yi Ming, Vaishali Naik, Fabien Paulot, David J Paynter, Peter Phillipps, Aparna Radhakrishnan, V Ramaswamy, Thomas E Robinson, M Daniel Schwarzkopf, Charles J Seman, Elena Shevliakova, Zhaoyi Shen, Hyeyum Hailey Shin, Levi G Silvers, R John Wilson, Michael Winton, Andrew T Wittenberg, Bruce Wyman, and Baoqiang Xiang, March 2018: The GFDL Global Atmosphere and Land Model AM4.0/LM4.0 - Part I: Simulation Characteristics with Prescribed SSTs. Journal of Advances in Modeling Earth Systems, 10(3), doi:10.1002/2017MS001208.
    [ Abstract ]
  29. Zhao, Ming, Jean-Christophe Golaz, Isaac M Held, Huan Guo, V Balaji, Rusty Benson, Jan-Huey Chen, Xi Chen, Leo J Donner, John P Dunne, Krista A Dunne, Jeffrey W Durachta, Songmiao Fan, Stuart Freidenreich, Stephen T Garner, Paul Ginoux, Lucas Harris, Larry W Horowitz, John P Krasting, Amy R Langenhorst, Zhi Liang, Pu Lin, Shian-Jiann Lin, Sergey Malyshev, E Mason, P C D Milly, Yi Ming, Vaishali Naik, Fabien Paulot, David J Paynter, Peter Phillipps, Aparna Radhakrishnan, V Ramaswamy, Thomas E Robinson, M Daniel Schwarzkopf, Charles J Seman, Elena Shevliakova, Zhaoyi Shen, Hyeyum Hailey Shin, Levi G Silvers, R John Wilson, Michael Winton, Andrew T Wittenberg, Bruce Wyman, and Baoqiang Xiang, March 2018: The GFDL Global Atmosphere and Land Model AM4.0/LM4.0 - Part II: Model Description, Sensitivity Studies, and Tuning Strategies. Journal of Advances in Modeling Earth Systems, 10(3), doi:10.1002/2017MS001209.
    [ Abstract ]
  30. Gao, Kun, Jan-Huey Chen, Lucas Harris, Shian-Jiann Lin, Baoqiang Xiang, and Ming Zhao, December 2017: Impact of Intraseasonal Oscillations on the Tropical Cyclone Activity over the Gulf of Mexico and Western Caribbean Sea in GFDL HiRAM. Journal of Geophysical Research: Atmospheres, 122(24), doi:10.1002/2017JD027756.
    [ Abstract ]
  31. Lin, Shian-Jiann, Lucas Harris, Xi Chen, Weiye Yao, and Junyi Chai, November 2017: Colliding Modons: A Nonlinear Test for the Evaluation of Global Dynamical Cores. Journal of Advances in Modeling Earth Systems, 9(7), doi:10.1002/2017MS000965.
    [ Abstract ]
  32. Ullrich, P A., C Jablonowski, J Kent, P H Lauritzen, R Nair, Kevin A Reed, C M Zarzycki, D M Hall, D Dazlich, R Heikes, C Konor, David A Randall, T Dubos, Y Meurdesoif, Xi Chen, and Lucas Harris, et al., December 2017: DCMIP2016: a review of non-hydrostatic dynamical core design and intercomparison of participating models. Geoscientific Model Development, 10(12), doi:10.5194/gmd-10-4477-2017.
    [ Abstract ]
  33. Harris, Lucas, Shian-Jiann Lin, and C Tu, June 2016: High resolution climate simulations using GFDL HiRAM with a stretched global grid. Journal of Climate, 29(11), doi:10.1175/JCLI-D-15-0389.1.
    [ Abstract ]
  34. Scott, R K., Lucas Harris, and Lorenzo M Polvani, January 2016: A test case for the inviscid shallow water equations on the sphere. Quarterly Journal of the Royal Meteorological Society, 142(694), doi:10.1002/qj.2667.
    [ Abstract ]
  35. Zhang, Wei, Gabriel A Vecchi, Hiroyuki Murakami, Thomas L Delworth, Andrew T Wittenberg, Anthony Rosati, Seth D Underwood, Whit G Anderson, Lucas Harris, Richard G Gudgel, Shian-Jiann Lin, Gabriele Villarini, and Jan-Huey Chen, February 2016: Improved Simulation of Tropical Cyclone Responses to ENSO in the Western North Pacific in the High-Resolution GFDL HiFLOR Coupled Climate Model. Journal of Climate, 29(4), doi:10.1175/JCLI-D-15-0475.1.
    [ Abstract ]
  36. Fan, Songmiao, Lucas Harris, and Larry W Horowitz, November 2015: Atmospheric energy transport to the Arctic 1979-2012. Tellus A, 67, doi:10.3402/tellusa.v67.25482.
    [ Abstract ]
  37. Murakami, Hiroyuki, Gabriel A Vecchi, Seth D Underwood, Thomas L Delworth, Andrew T Wittenberg, Whit G Anderson, Jan-Huey Chen, Richard G Gudgel, Lucas Harris, Shian-Jiann Lin, and Fanrong Zeng, December 2015: Simulation and Prediction of Category 4 and 5 Hurricanes in the High-Resolution GFDL HiFLOR Coupled Climate Model. Journal of Climate, 28(23), doi:10.1175/JCLI-D-15-0216.1.
    [ Abstract ]
  38. Xiang, Baoqiang, Shian-Jiann Lin, Ming Zhao, Gabriel A Vecchi, Tim Li, Xianan Jiang, Lucas Harris, and Jan-Huey Chen, February 2015: Beyond weather time scale prediction for Hurricane Sandy and Super Typhoon Haiyan in a global climate model. Monthly Weather Review, 143(2), doi:10.1175/MWR-D-14-00227.1.
    [ Abstract ]
  39. Harris, Lucas, and Shian-Jiann Lin, July 2014: Global-to-regional nested-grid climate simulations in the GFDL High Resolution Atmosphere Model. Journal of Climate, 27(13), doi:10.1175/JCLI-D-13-00596.1.
    [ Abstract ]
  40. Harris, Lucas, and Shian-Jiann Lin, January 2013: A two-way nested global-regional dynamical core on the cubed-sphere grid. Monthly Weather Review, 141(1), doi:10.1175/MWR-D-11-00201.1.
    [ Abstract ]
  41. Harris, Lucas, P H Lauritzen, and R Mittal, February 2011: A flux-form version of the conservative semi-Lagrangian multi-tracer transport scheme (CSLAM) on the cubed sphere grid. Journal of Computational Physics, 230(4), doi:10.1016/j.jcp.2010.11.001.
    [ Abstract ]
  42. Harris, Lucas, and D R Durran, June 2010: An Idealized Comparison of One-Way and Two-Way Grid Nesting. Monthly Weather Review, 138(6), doi:10.1175/2010MWR3080.1.
    [ Abstract ]