All Stories

  1. Big Data Assimilation: Real-time 30-second-refresh Heavy Rain Forecast Using Fugaku During Tokyo Olympics and Paralympics

    Article • November 2023, ACM (Association for Computing Machinery)

    Takumi Honda, Seiya Nishizawa

  2. Optimization and sophistication of the super-droplet method for ultrahigh resolution cloud simulations

    Article • March 2023, Copernicus GmbH

    Seiya Nishizawa, Shin-ichiro Shima

  3. Characteristic Form and Distance in High‐Level Hierarchical Structure of Self‐Aggregated Clouds in Radiative‐Convective Equilibrium

    Article • Geophysical Research Letters, September 2022, American Geophysical Union (AGU)

    Seiya Nishizawa

  4. Characteristic form and distance in high-level hierarchical structure of self-aggregated clouds in radiative-convective equilibrium

    Article • June 2022, Wiley

    Seiya Nishizawa

  5. Advantage of 30‐s‐Updating Numerical Weather Prediction With a Phased‐Array Weather Radar Over Operational Nowcast for a Convective Precipitation System

    Article • Geophysical Research Letters, June 2022, American Geophysical Union (AGU)

    Seiya Nishizawa, Takumi Honda

  6. Development of the Real‐Time 30‐s‐Update Big Data Assimilation System for Convective Rainfall Prediction With a Phased Array Weather Radar: Description and Preliminary Evaluation

    Article • Journal of Advances in Modeling Earth Systems, June 2022, American Geophysical Union (AGU)

    Seiya Nishizawa, Takumi Honda

  7. 4D-Var data assimilation using an adjoint model of a neural network surrogate model

    Article • March 2022, Wiley

    Seiya Nishizawa

  8. 152K-computer-node parallel scalable implicit solver for dynamic nonlinear earthquake simulation

    Article • January 2022, ACM (Association for Computing Machinery)

    Seiya Nishizawa

  9. Intra-cloud Microphysical Variability Obtained from Large-eddy Simulations using the Super-droplet Method

    Article • November 2021, Wiley

    Seiya Nishizawa

  10. 4D-Var data assimilation using an adjoint model of a neural network surrogate model

    Article • July 2021, Wiley

    Seiya Nishizawa

  11. Influence of sub-mesoscale topography on daytime precipitation associated with thermally driven local circulations over a mountainous region

    Article • Journal of the Atmospheric Sciences, June 2021, American Meteorological Society

    Seiya Nishizawa

  12. New Critical Length for the Onset of Self‐Aggregation of Moist Convection

    Article • Geophysical Research Letters, August 2020, American Geophysical Union (AGU)

    Seiya Nishizawa

  13. Impacts of Number of Cloud Condensation Nuclei on Two-Dimensional Moist Rayleigh Convection

    Article • Journal of the Meteorological Society of Japan Ser II, January 2020, Meteorological Society of Japan

    Seiya Nishizawa

  14. Convergence of Convective Updraft Ensembles With Respect to the Grid Spacing of Atmospheric Models

    Article • Geophysical Research Letters, December 2019, American Geophysical Union (AGU)

    Seiya Nishizawa, Dr. Hisashi Yashiro

  15. Theoretical Time Evolution of Numerical Errors When Using Floating Point Numbers in Shallow‐Water Models

    Article • Journal of Advances in Modeling Earth Systems, October 2019, American Geophysical Union (AGU)

    Seiya Nishizawa

  16. Estimation of energy dissipation caused by odd order difference schemes for an unstable planetary boundary layer

    Article • Atmospheric Science Letters, May 2019, Wiley

    Seiya Nishizawa

  17. An evaluation method for uncertainties in regional climate projections

    Article • Atmospheric Science Letters, December 2018, Wiley

    Seiya Nishizawa, Dr. Hisashi Yashiro

  18. Maintenance condition of back-building squall-line in a numerical simulation of a heavy rainfall event in July 2010 in Western Japan

    Article • Atmospheric Science Letters, December 2018, Wiley

    Seiya Nishizawa, Dr. Hisashi Yashiro

  19. A new surface flux scheme for atmosphere/ocean models

    Article • Journal of Advances in Modeling Earth Systems, December 2018, American Geophysical Union (AGU)

    Seiya Nishizawa

  20. Decomposition of the large-scale atmospheric state driving downscaling: a perspective on dynamical downscaling for regional climate study

    Article • Progress in Earth and Planetary Science, January 2018, Springer Science + Business Media

    Seiya Nishizawa, Dr. Hisashi Yashiro

  21. Assimilating All-Sky Himawari-8 Satellite Infrared Radiances: A Case of Typhoon Soudelor (2015)

    Article • Monthly Weather Review, January 2018, American Meteorological Society

    Seiya Nishizawa, Takumi Honda

  22. DTF: An I/O Arbitration Framework for Multi-component Data Processing Workflows

    Article • January 2018, Springer Science + Business Media

    Seiya Nishizawa

  23. Contributions of changes in climatology and perturbation and the resulting nonlinearity to regional climate change

    Article • Nature Communications, December 2017, Springer Science + Business Media

    Seiya Nishizawa, Dr. Hisashi Yashiro

  24. CONeP: A cost-effective online nesting procedure for regional atmospheric models

    Article • Parallel Computing, July 2017, Elsevier

    Seiya Nishizawa, Dr. Hisashi Yashiro

  25. A flexible I/O arbitration framework for netCDF-based big data processing workflows on high-end supercomputers

    Article • Concurrency and Computation Practice and Experience, May 2017, Wiley

    Seiya Nishizawa

  26. Exploration of Wind Structure on Mars using an Airplane and Flight Feasibility Study

    Article • TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, January 2017, Japan Society for Aeronautical and Space Sciences

    Seiya Nishizawa

  27. The Near-Real-Time SCALE-LETKF System: A Case of the September 2015 Kanto-Tohoku Heavy Rainfall

    Article • SOLA, January 2017, Meteorological Society of Japan

    Seiya Nishizawa, Dr. Hisashi Yashiro

  28. Simulations of Below-Ground Dynamics of Fungi: 1.184 Pflops Attained by Automated Generation and Autotuning of Temporal Blocking Codes

    Article • November 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Seiya Nishizawa, Dr. Hisashi Yashiro

  29. A Numerical Study of Convection in a Condensing CO2 Atmosphere under Early Mars-Like Conditions

    Article • Journal of the Atmospheric Sciences, October 2016, American Meteorological Society

    Seiya Nishizawa

  30. Large-Eddy Simulations of Dust Devils and Convective Vortices

    Article • Space Science Reviews, September 2016, Springer Science + Business Media

    Dr. Fabian Hoffmann, Seiya Nishizawa

  31. Automatic generation of efficient codes from mathematical descriptions of stencil computation

    Article • September 2016, ACM (Association for Computing Machinery)

    Seiya Nishizawa, Dr. Hisashi Yashiro

  32. Martian dust devil simulations with 5-m resolution

    Article • Geophysical Research Letters, May 2016, American Geophysical Union (AGU)

    Seiya Nishizawa, Dr. Hisashi Yashiro

  33. Toward a General I/O Arbitration Framework for netCDF Based Big Data Processing

    Article • January 2016, Springer Science + Business Media

    Seiya Nishizawa

  34. Impacts of cloud microphysics on trade wind cumulus: which cloud microphysics processes contribute to the diversity in a large eddy simulation?

    Article • Progress in Earth and Planetary Science, August 2015, Springer Science + Business Media

    Seiya Nishizawa, Dr. Hisashi Yashiro

  35. A linear thermal stability analysis of discretized fluid equations

    Article • Theoretical and Computational Fluid Dynamics, March 2015, Springer Science + Business Media

    Seiya Nishizawa

  36. Horizontal Distance of Each Cumulus and Cloud Broadening Distance Determine Cloud Cover

    Article • SOLA, January 2015, Meteorological Society of Japan

    Seiya Nishizawa, Dr. Hisashi Yashiro

  37. Corrigendum: “Potential of Retrieving Shallow-Cloud Life Cycle from Future Generation Satellite Observations through Cloud Evolution Diagrams: A Suggestion from a Large Eddy Simulation”

    Article • SOLA, January 2015, Meteorological Society of Japan

    Seiya Nishizawa, Dr. Hisashi Yashiro

  38. Influence of grid aspect ratio on planetary boundary layer turbulence in large-eddy simulations

    Article • Geoscientific Model Development, January 2015, Copernicus GmbH

    Seiya Nishizawa, Dr. Hisashi Yashiro

  39. Potential of Retrieving Shallow-Cloud Life Cycle from Future Generation Satellite Observations through Cloud Evolution Diagrams: A Suggestion from a Large Eddy Simulation

    Article • SOLA, January 2014, Meteorological Society of Japan

    Seiya Nishizawa, Dr. Hisashi Yashiro

  40. Effects of latitudinally heterogeneous buoyancy flux conditions at the inner core boundary of an MHD dynamo in a rotating spherical shell

    Article • Physics of The Earth and Planetary Interiors, October 2013, Elsevier

    Seiya Nishizawa

  41. An Experimental Data Handling System for Ensemble Numerical Weather Predictions Using a Web-Based Data Server and Analysis Tool “Gfdnavi”

    Article • Journal of Disaster Research, February 2013, Fuji Technology Press Ltd.

    Seiya Nishizawa

  42. "Gtool5": a Fortran90 library of input/output interfaces for self-descriptive multi-dimensional numerical data

    Article • Geoscientific Model Development, April 2012, Copernicus GmbH

    Seiya Nishizawa

  43. Intermittent cumulonimbus activity breaking the three-layer cloud structure of Jupiter

    Article • Geophysical Research Letters, July 2011, American Geophysical Union (AGU)

    Seiya Nishizawa

  44. Classification of Polar-Night Jet Oscillations and Their Relationship to Fast and Slow Variations in a Global Mechanistic Circulation Model of the Stratosphere and Troposphere

    Article • Journal of Climate, December 2010, American Meteorological Society

    Seiya Nishizawa

  45. Gfdnavi, Web-Based Data and Knowledge Server Software for Geophysical Fluid Sciences, Part II: RESTful Web Services and Object-Oriented Programming Interface

    Article • January 2010, Springer Science + Business Media

    Seiya Nishizawa

  46. Gfdnavi, Web-Based Data and Knowledge Server Software for Geophysical Fluid Sciences, Part I: Rationales, Stand-Alone Features, and Supporting Knowledge Documentation Linked to Data

    Article • January 2010, Springer Science + Business Media

    Seiya Nishizawa

  47. Jet formation in decaying two-dimensional turbulence on a rotating sphere

    Article • January 2010, Springer Science + Business Media

    Seiya Nishizawa

  48. Rossby Waves and Jets in Two-Dimensional Decaying Turbulence on a Rotating Sphere

    Article • Journal of the Atmospheric Sciences, December 2007, American Meteorological Society

    Seiya Nishizawa

  49. Distribution functions of a spurious trend in a finite length data set with natural variability: Statistical considerations and a numerical experiment with a global circulation model

    Article • Journal of Geophysical Research Atmospheres, January 2005, American Geophysical Union (AGU)

    Seiya Nishizawa

  50. A Parameter Sweep Experiment on Topographic Effects on the Annular Variability

    Article • Journal of the Meteorological Society of Japan Ser II, January 2004, Meteorological Society of Japan

    Seiya Nishizawa