All Stories

  1. Parallelized Remapping Algorithms for km-scale Global Weather and Climate Simulations with Icosahedral Grid System

    Article • January 2024, ACM (Association for Computing Machinery)

    Dr. Hisashi Yashiro, Chihiro Kodama

  2. Large Ensemble Simulation for Investigating Predictability of Precursor Vortices of Typhoon Faxai in 2019 With a 14‐km Mesh Global Nonhydrostatic Atmospheric Model

    Article • Geophysical Research Letters, February 2023, American Geophysical Union (AGU)

    Dr. Hisashi Yashiro

  3. A System-Wide Communication to Couple Multiple MPI Programs for Heterogeneous Computing

    Article • January 2023, Springer Science + Business Media

    Dr. Hisashi Yashiro

  4. Flux Adjustment on Seasonal-Scale Sea Surface Temperature Drift in NICOCO

    Article • Journal of the Meteorological Society of Japan Ser II, January 2023, Meteorological Society of Japan

    Dr. Hisashi Yashiro

  5. Autotuning Power Consumption and Computation Accuracy using ppOpen-AT

    Article • December 2022, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Hisashi Yashiro

  6. NEXRA: A weather research analysis system based on the Nonhydrostatic Icosahedral Atmospheric Model with a local ensemble transform Kalman filter

    Article • November 2022, Research Square

    Dr. Hisashi Yashiro

  7. Evaluating the contribution of the unexplored photochemistry of aldehydes on the tropospheric levels of molecular hydrogen (H2)

    Article • Atmospheric Chemistry and Physics, September 2022, Copernicus GmbH

    Dr. Hisashi Yashiro

  8. Development of a coupler h3-Open-UTIL/MP

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

    Dr. Hisashi Yashiro

  9. Enhancing data assimilation of GPM observations

    Article • January 2022, Elsevier

    Dr. Hisashi Yashiro

  10. Large Ensemble Atmospheric and Environmental Prediction for Disaster Prevention and Mitigation with the Supercomputer Fugaku

    Article • Sen i Gakkaishi, February 2021, Society of Fiber Science and Technology Japan

    Dr. Hisashi Yashiro

  11. The Nonhydrostatic ICosahedral Atmospheric Model for CMIP6 HighResMIP simulations (NICAM16-S): experimental design, model description, and impacts of model updates

    Article • Geoscientific Model Development, February 2021, Copernicus GmbH

    Dr. Hisashi Yashiro

  12. Effect of Model Resolution on Black Carbon Transport from Siberia to the Arctic Associated with the Well-Developed Low-Pressure Systems in September

    Article • Journal of the Meteorological Society of Japan Ser II, January 2021, Meteorological Society of Japan

    Dr. Hisashi Yashiro

  13. A 1024-Member Ensemble Data Assimilation with 3.5-Km Mesh Global Weather Simulations

    Article • November 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Hisashi Yashiro

  14. Co-Design for A64FX Manycore Processor and ”Fugaku”

    Article • November 2020, Institute of Electrical & Electronics Engineers (IEEE)

    Dr. Hisashi Yashiro

  15. Global aerosol simulations using NICAM.16 on a 14 km grid spacing for a climate study: improved and remaining issues relative to a lower-resolution model

    Article • Geoscientific Model Development, August 2020, Copernicus GmbH

    Dr. Hisashi Yashiro

  16. Coupling library Jcup3: its philosophy and application

    Article • Progress in Earth and Planetary Science, February 2020, Springer Science + Business Media

    Dr. Hisashi Yashiro

  17. AIMES: Advanced Computation and I/O Methods for Earth-System Simulations

    Article • January 2020, Springer Science + Business Media

    Dr. Hisashi Yashiro

  18. An Energy Balance Model for Low--Level Clouds Based on a Simulation Resolving Mesoscale Motions

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

    Dr. Hisashi Yashiro

  19. Precipitation Ensemble Data Assimilation in NWP Models

    Article • January 2020, Springer Science + Business Media

    Dr. Hisashi Yashiro

  20. 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

  21. An evaluation method for uncertainties in regional climate projections

    Article • Atmospheric Science Letters, December 2018, Wiley

    Seiya Nishizawa, Dr. Hisashi Yashiro

  22. 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

  23. ppOpen-HPC/pK-Open-HPC: Application Development Framework with Automatic Tuning (AT)

    Article • December 2018, Springer Science + Business Media

    Dr. Hisashi Yashiro

  24. Online Model Parameter Estimation With Ensemble Data Assimilation in the Real Global Atmosphere: A Case With the Nonhydrostatic Icosahedral Atmospheric Model (NICAM) and the Global Satellite Mapping of Precipitation Data

    Article • Journal of Geophysical Research Atmospheres, July 2018, American Geophysical Union (AGU)

    Dr. Hisashi Yashiro

  25. Single Precision in the Dynamical Core of a Nonhydrostatic Global Atmospheric Model: Evaluation Using a Baroclinic Wave Test Case

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

    Dr. Hisashi Yashiro

  26. 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

  27. Analysis of High Radon-222 Concentration Events Using Multi-Horizontal-Resolution NICAM Simulations

    Article • SOLA, January 2018, Meteorological Society of Japan

    Dr. Hisashi Yashiro

  28. Multi-scale Simulations of Atmospheric Pollutants Using a Non-hydrostatic Icosahedral Atmospheric Model

    Article • January 2018, Springer Science + Business Media

    Dr. Hisashi Yashiro

  29. 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

  30. A Madden-Julian Oscillation event remotely accelerates ocean upwelling to abruptly terminate the 1997/1998 super El Niño

    Article • Geophysical Research Letters, September 2017, Wiley

    Dr. Hisashi Yashiro

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

    Article • Parallel Computing, July 2017, Elsevier

    Seiya Nishizawa, Dr. Hisashi Yashiro

  32. Outcomes and challenges of global high-resolution non-hydrostatic atmospheric simulations using the K computer

    Article • Progress in Earth and Planetary Science, April 2017, Springer Science + Business Media

    Dr. Hisashi Yashiro

  33. Evaluation of summertime surface ozone in Kanto area of Japan using a semi-regional model and observation

    Article • Atmospheric Environment, March 2017, Elsevier

    Dr. Hisashi Yashiro

  34. 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

  35. Resolution Dependency of Numerically Simulated Stratosphere-to-Troposphere Transport Associated with Mid-Latitude Closed Cyclones in Early Spring around Japan

    Article • SOLA, January 2017, Meteorological Society of Japan

    Dr. Hisashi Yashiro

  36. Validation of high-resolution aerosol optical thickness simulated by a global non-hydrostatic model against remote sensing measurements

    Article • January 2017, American Institute of Physics

    Dr. Hisashi Yashiro

  37. 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

  38. Precursors of deep moist convection in a subkilometer global simulation

    Article • Journal of Geophysical Research Atmospheres, October 2016, American Geophysical Union (AGU)

    Dr. Hisashi Yashiro

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

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

    Seiya Nishizawa, Dr. Hisashi Yashiro

  40. Performance evaluation of a throughput-aware framework for ensemble data assimilation: the case of NICAM-LETKF

    Article • Geoscientific Model Development, July 2016, Copernicus GmbH

    Dr. Hisashi Yashiro

  41. Performance Analysis and Optimization of Nonhydrostatic ICosahedral Atmospheric Model (NICAM) on the K Computer and TSUBAME2.5

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

    Dr. Hisashi Yashiro

  42. Resolution dependence of deep convections in a global simulation from over 10-kilometer to sub-kilometer grid spacing

    Article • Progress in Earth and Planetary Science, June 2016, Springer Science + Business Media

    Dr. Hisashi Yashiro

  43. Unrealistically pristine air in the Arctic produced by current global scale models

    Article • Scientific Reports, May 2016, Springer Science + Business Media

    Dr. Hisashi Yashiro

  44. Martian dust devil simulations with 5-m resolution

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

    Seiya Nishizawa, Dr. Hisashi Yashiro

  45. Resolution Dependence of the Diurnal Cycle of Precipitation Simulated by a Global Cloud-System Resolving Model

    Article • SOLA, January 2016, Meteorological Society of Japan

    Dr. Hisashi Yashiro

  46. Performance assessment of a triple-frequency spaceborne cloud–precipitation radar concept using a global cloud-resolving model

    Article • Atmospheric Measurement Techniques, August 2015, Copernicus GmbH

    Dr. Hisashi Yashiro

  47. 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

  48. Does convection vary in different cloud disturbances?

    Article • Atmospheric Science Letters, January 2015, Wiley

    Dr. Hisashi Yashiro

  49. 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

  50. 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

  51. 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

  52. The Non-hydrostatic Icosahedral Atmospheric Model: description and development

    Article • Progress in Earth and Planetary Science, October 2014, Springer Science + Business Media

    Dr. Hisashi Yashiro

  53. Scalable rank-mapping algorithm for an icosahedral grid system on the massive parallel computer with a 3-D torus network

    Article • Parallel Computing, August 2014, Elsevier

    Dr. Hisashi Yashiro

  54. Madden–Julian Oscillation prediction skill of a new-generation global model demonstrated using a supercomputer

    Article • Nature Communications, May 2014, Springer Science + Business Media

    Dr. Hisashi Yashiro

  55. 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

  56. Deep moist atmospheric convection in a subkilometer global simulation

    Article • Geophysical Research Letters, September 2013, American Geophysical Union (AGU)

    Dr. Hisashi Yashiro

  57. The impact of soil uptake on the global distribution of molecular hydrogen: chemical transport model simulation

    Article • Atmospheric Chemistry and Physics, July 2011, Copernicus GmbH

    Dr. Hisashi Yashiro

  58. Temporal and spatial variations of carbon monoxide over the western part of the Pacific Ocean

    Article • Journal of Geophysical Research Atmospheres, April 2009, American Geophysical Union (AGU)

    Dr. Hisashi Yashiro