I am a PhD student at the Atmospheric Chemistry Modeling Group, Harvard University.

Research Focus

  • Development and evaluation of atmospheric chemistry models such as the GEOS-Chem chemical transport model (CTM).
  • Development of coupled meteorology/climate-chemistry models by coupling models such as WRF, CESM2 to the GEOS-Chem CTM.
  • Writing high-performance, scalable code to do science better
  • Always waiting for new adventures!

Current work

  • Development of the Harmonized Emissions Component (HEMCO) and interfacing it with the Community Atmosphere Model (CAM) in CESM2
  • Running the GEOS-Chem model and WRF-GC with HPC on the cloud.
  • Software maintenance of the WRF-GC coupled model.


  • Lin, H., Feng, X., Fu, T-M., Tian, H., Ma, Y., Zhang, L., Jacob, D. J., Yantosca, R. M., Sulprizio, M. P., Lundgren, E. W., Zhuang, J., Zhang, Q., Lu, X., Zhang, L., Shen, L., Guo, J., Eastham, S. D. and Keller, C. A.: WRF-GC (v1.0): online coupling of WRF (v3.9.1.1) and GEOS-Chem (v12.2.1) for regional atmospheric chemistry modeling, Part 1: description of the one-way model (v1.0), Geosci. Model Dev., 2020. PDF

  • Lin, H., Jacob, D. J., Lundgren, E. W., Sulprizio, M. P., Keller, C. A., Fritz, T. M., Eastham, S. D., Emmons, L. K., Campbell, P. C., Baker, B., Saylor, R. D., and Montuoro, R.: Harmonized Emissions Component (HEMCO) 3.0 as a versatile emissions component for atmospheric models: application in the GEOS-Chem, NASA GEOS, WRF-GC, CESM2, NOAA GEFS-Aerosol, and NOAA UFS models, Geosci. Model Dev., 2021. PDF

  • Feng, X., Lin, H., Fu, T-M., Sulprizio, M. P., Zhuang, J., Jacob, D. J., Tian, H., Ma, Y., Zhang, L., Wang, X. and Chen, Q.: WRF-GC (v2.0): online two-way coupling of WRF (v3.9.1.1) and GEOS-Chem (v12.7.2) for modeling regional atmospheric chemistry-meteorology interactions, Geosci. Model. Dev., 2021. PDF

  • Zhang, R., Zhang, Y., Lin, H., Feng, X., Fu, T-M. and Wang, Y.: NOx emission reduction and recovery during COVID-19 in East China, Atmosphere, 2020. PDF

  • Zhuang, J., Jacob, D.J., Lin, H., Lundgren, E.W., Yantosca, R.M., Flo Gaya, J., Sulprizio, M.P. and Eastham, S.D., Efficient high-performance computing on the Amazon Web Services cloud with over a thousand cores: application to global atmospheric chemistry simulations at 50-km resolution with GEOS-Chem 12.3.2, J. Adv. Model. Earth. Sy., 2020.

Conference Presentations

  • A022-04 Development of the Harmonized Emissions Component (HEMCO) 3.0 as a general emissions component for atmospheric models, eLightning presentation at AGU Fall Meeting 2020, Online, December 2020. View Poster (requires AGU login)
  • WRF-GC: Running WRF with the GEOS-Chem chemical module: Model Clinic, 9th International GEOS-Chem Meeting (IGC9), at Harvard University, Cambridge, MA, USA, May 2019. WRF-GC Website
  • Development of a Meteorology-Chemistry Coupled Model: WRF-GC, Preliminary Results (poster), American Geosciences Union/Chinese Academy of Sciences Joint Meeting (AJM JING Meeting), at Xi’an, China, October 2018.
  • Coupling GEOS-Chem with WRF: Developing a new Meteorology-Chemistry Coupled Model, Preliminary Results (poster). 1st GEOS-Chem Asia Meeting (GCA1), at NUIST, Nanjing, China, May 2018.

Select Day-to-day Work Presentations

  • Unifying atmospheric chemistry modeling using data: Development of the Harmonized Emissions Component 3.0, at Harvard EPS G1 Symposium, 04 Sep 2020. PDF
  • WRF-GC: Online coupling of WRF and GEOS-Chem for regional air quality modeling (with 2.0, 3.0 updates), online at 蔚蓝空间 of Peking University, 20 Aug 2020.
  • HEMCO-CESM Progress Update, with Jacob Group and NCAR, 24 Jul 2020. PDF
  • HEMCO: Restructuring and interfacing with CAM, at Model Development Subgroup (MDS) in Jacob Group, 19 May 2020. PDF
  • HEMCO: Developments at Harvard and collaboration with NCAR, in Jacob Group in collaboration with NOAA, 04 Mar 2020. PDF
  • WRF|GC: Online coupling of WRF and GEOS-Chem for regional air quality modeling: coupled model introduction, at ClimaCell, Boston, MA, USA, 27 Jan 2020. PDF
  • Restructuring HEMCO, at NCAR/ACOM, Boulder, CO, USA, 07 January 2020. PDF